UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity
OpenCloudOS-Kernel/include/net/sctp/ulpqueue.h

70 lines
2.2 KiB
C
Raw Normal View History

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 104 Based on 1 normalized pattern(s): 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 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 42 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Richard Fontana <rfontana@redhat.com> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190523091649.683323110@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-23 17:14:41 +08:00
/* SPDX-License-Identifier: GPL-2.0-or-later */
[SCTP]: Stop claiming that this is a "reference implementation" I was notified by Randy Stewart that lksctp claims to be "the reference implementation". First of all, "the refrence implementation" was the original implementation of SCTP in usersapce written ty Randy and a few others. Second, after looking at the definiton of 'reference implementation', we don't really meet the requirements. Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
2008-01-11 22:57:09 +08:00
/* SCTP kernel implementation
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
* (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:
net: sctp: trivial: update mailing list address The SCTP mailing list address to send patches or questions to is linux-sctp@vger.kernel.org and not lksctp-developers@lists.sourceforge.net anymore. Therefore, update all occurences. Signed-off-by: Daniel Borkmann <dborkman@redhat.com> Acked-by: Neil Horman <nhorman@tuxdriver.com> Acked-by: Vlad Yasevich <vyasevich@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2013-07-23 20:51:47 +08:00
* lksctp developers <linux-sctp@vger.kernel.org>
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
*
* 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;
sctp: add support for the process of unordered idata 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>
2017-12-08 21:04:09 +08:00
struct sk_buff_head reasm_uo;
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
struct sk_buff_head lobby;
};
/* Prototypes. */
struct sctp_ulpq *sctp_ulpq_init(struct sctp_ulpq *,
struct sctp_association *);
[SCTP]: Clean up stale data during association restart During association restart we may have stale data sitting on the ULP queue waiting for ordering or reassembly. This data may cause severe problems if not cleaned up. In particular stale data pending ordering may cause problems with receive window exhaustion if our peer has decided to restart the association. Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com> Signed-off-by: Sridhar Samudrala <sri@us.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2007-03-20 08:01:17 +08:00
void sctp_ulpq_flush(struct sctp_ulpq *ulpq);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
void sctp_ulpq_free(struct sctp_ulpq *);
/* Add a new DATA chunk for processing. */
[PATCH] gfp flags annotations - part 1 - added typedef unsigned int __nocast gfp_t; - replaced __nocast uses for gfp flags with gfp_t - it gives exactly the same warnings as far as sparse is concerned, doesn't change generated code (from gcc point of view we replaced unsigned int with typedef) and documents what's going on far better. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-07 14:46:04 +08:00
int sctp_ulpq_tail_data(struct sctp_ulpq *, struct sctp_chunk *, gfp_t);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
/* Add a new event for propagation to the ULP. */
sctp: Pass sk_buff_head explicitly to sctp_ulpq_tail_event(). Now the SKB list implementation assumption can be removed. And now that we know that the list head is always non-NULL we can remove the code blocks dealing with that as well. Signed-off-by: David S. Miller <davem@davemloft.net> Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2019-04-12 06:02:07 +08:00
int sctp_ulpq_tail_event(struct sctp_ulpq *, struct sk_buff_head *skb_list);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
/* Renege previously received chunks. */
[PATCH] gfp flags annotations - part 1 - added typedef unsigned int __nocast gfp_t; - replaced __nocast uses for gfp flags with gfp_t - it gives exactly the same warnings as far as sparse is concerned, doesn't change generated code (from gcc point of view we replaced unsigned int with typedef) and documents what's going on far better. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-07 14:46:04 +08:00
void sctp_ulpq_renege(struct sctp_ulpq *, struct sctp_chunk *, gfp_t);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
/* Perform partial delivery. */
sctp: Clean up type-punning in sctp_cmd_t union Lots of points in the sctp_cmd_interpreter function treat the sctp_cmd_t arg as a void pointer, even though they are written as various other types. Theres no need for this as doing so just leads to possible type-punning issues that could cause crashes, and if we remain type-consistent we can actually just remove the void * member of the union entirely. Change Notes: v2) * Dropped chunk that modified SCTP_NULL to create a marker pattern should anyone try to use a SCTP_NULL() assigned sctp_arg_t, Assigning to .zero provides the same effect and should be faster, per Vlad Y. v3) * Reverted part of V2, opting to use memset instead of .zero, so that the entire union is initalized thus avoiding the i164 speculative load problems previously encountered, per Dave M.. Also rewrote SCTP_[NO]FORCE so as to use common infrastructure a little more Signed-off-by: Neil Horman <nhorman@tuxdriver.com CC: Vlad Yasevich <vyasevich@gmail.com> CC: "David S. Miller" <davem@davemloft.net> CC: linux-sctp@vger.kernel.org Signed-off-by: David S. Miller <davem@davemloft.net>
2012-10-29 16:32:13 +08:00
void sctp_ulpq_partial_delivery(struct sctp_ulpq *, gfp_t);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
/* Abort the partial delivery. */
[PATCH] gfp flags annotations - part 1 - added typedef unsigned int __nocast gfp_t; - replaced __nocast uses for gfp flags with gfp_t - it gives exactly the same warnings as far as sparse is concerned, doesn't change generated code (from gcc point of view we replaced unsigned int with typedef) and documents what's going on far better. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2005-10-07 14:46:04 +08:00
void sctp_ulpq_abort_pd(struct sctp_ulpq *, gfp_t);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
/* Clear the partial data delivery condition on this socket. */
[SCTP]: Implement SCTP_FRAGMENT_INTERLEAVE socket option 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>
2007-04-21 03:23:15 +08:00
int sctp_clear_pd(struct sock *sk, struct sctp_association *asoc);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
/* Skip over an SSN. */
void sctp_ulpq_skip(struct sctp_ulpq *ulpq, __u16 sid, __u16 ssn);
SCTP: properly clean up fragment and ordering queues during FWD-TSN. When we recieve a FWD-TSN (meaning the peer has abandoned the data), we need to clean up any partially received messages that may be hanging out on the re-assembly or re-ordering queues. This is a MUST requirement that was not properly done before. Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com.>
2007-07-14 05:01:19 +08:00
void sctp_ulpq_reasm_flushtsn(struct sctp_ulpq *, __u32);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
sctp: implement renege_events for sctp_stream_interleave renege_events is added as a member of sctp_stream_interleave, used to renege some old data or idata in reasm or lobby queue properly to free some memory for the new data when there's memory stress. It defines sctp_renege_events for idata, and leaves sctp_ulpq_renege as it is for data. 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>
2017-12-08 21:04:06 +08:00
__u16 sctp_ulpq_renege_list(struct sctp_ulpq *ulpq,
struct sk_buff_head *list, __u16 needed);
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-17 06:20:36 +08:00
sctp: implement renege_events for sctp_stream_interleave renege_events is added as a member of sctp_stream_interleave, used to renege some old data or idata in reasm or lobby queue properly to free some memory for the new data when there's memory stress. It defines sctp_renege_events for idata, and leaves sctp_ulpq_renege as it is for data. 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>
2017-12-08 21:04:06 +08:00
#endif /* __sctp_ulpqueue_h__ */