/*
* Copyright (c) 2015-2016 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* compliance with the License. The rights granted to you under the License
* may not be used to create, or enable the creation or redistribution of,
* unlawful or unlicensed copies of an Apple operating system, or to
* circumvent, violate, or enable the circumvention or violation of, any
* terms of an Apple operating system software license agreement.
*
* Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
/*
* Copyright (C) 2011-2014 Matteo Landi, Luigi Rizzo. All rights reserved.
* Copyright (C) 2013-2014 Universita` di Pisa. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef _SKYWALK_NEXUS_USER_PIPE_H_
#define _SKYWALK_NEXUS_USER_PIPE_H_
#include <skywalk/os_skywalk_private.h>
#if CONFIG_NEXUS_USER_PIPE
#define NX_UPIPE_MAXPIPES 64 /* max number of pipes per adapter */
struct nexus_upipe_adapter {
/*
* This is an overlay structure on nexus_adapter;
* make sure it contains 'up' as the first member.
*/
struct nexus_adapter pna_up;
uint32_t pna_id; /* pipe identifier */
ch_endpoint_t pna_role; /* master or slave */
struct nexus_adapter *pna_parent; /* adapter that owns the memory */
struct nexus_upipe_adapter *pna_peer; /* the other end of the pipe */
boolean_t pna_peer_ref; /* 1 iff we are holding a ref to the peer */
uint32_t pna_parent_slot; /* index in the parent pipe array */
};
/*
* nx_upipe is a descriptor for a user pipe nexus instance.
*/
struct nx_upipe {
struct nexus_adapter *nup_pna;
uint32_t nup_pna_users;
struct nxbind *nup_cli_nxb;
struct nxbind *nup_srv_nxb;
};
#define NX_UPIPE_PRIVATE(_nx) ((struct nx_upipe *)(_nx)->nx_arg)
#define NEXUS_PROVIDER_USER_PIPE "com.apple.nexus.upipe"
extern struct nxdom nx_upipe_dom_s;
__BEGIN_DECLS
extern void nx_upipe_na_dealloc(struct nexus_adapter *);
extern int nx_upipe_na_find(struct kern_nexus *, struct kern_channel *,
struct chreq *, struct nxbind *, struct proc *, struct nexus_adapter **,
boolean_t);
__END_DECLS
#else /* !CONFIG_NEXUS_USER_PIPE */
#define NM_MAXPIPES 0
#endif /* !CONFIG_NEXUS_USER_PIPE */
#endif /* _SKYWALK_NEXUS_USER_PIPE_H_ */