b26ddd8130
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>
94 lines
3.1 KiB
C
94 lines
3.1 KiB
C
/* 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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* This SCTP implementation is free software;
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* you can redistribute it and/or modify it under the terms of
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* the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This SCTP implementation is distributed in the hope that it
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* will be useful, but WITHOUT ANY WARRANTY; without even the implied
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* ************************
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* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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* See the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with GNU CC; see the file COPYING. If not, write to
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* the Free Software Foundation, 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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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 <lksctp-developers@lists.sourceforge.net>
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*
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* Or submit a bug report through the following website:
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* http://www.sf.net/projects/lksctp
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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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* Any bugs reported given to us we will try to fix... any fixes shared will
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* be incorporated into the next SCTP release.
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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 malloced;
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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 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 sctp_ulpevent *ev);
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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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#endif /* __sctp_ulpqueue_h__ */
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