63 lines
2.3 KiB
C
63 lines
2.3 KiB
C
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/*
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* Copyright (c) 2019 Apple Inc. All rights reserved.
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*
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* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
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*
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* This file contains Original Code and/or Modifications of Original Code
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* as defined in and that are subject to the Apple Public Source License
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* Version 2.0 (the 'License'). You may not use this file except in
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* compliance with the License. The rights granted to you under the License
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* may not be used to create, or enable the creation or redistribution of,
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* unlawful or unlicensed copies of an Apple operating system, or to
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* circumvent, violate, or enable the circumvention or violation of, any
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* terms of an Apple operating system software license agreement.
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*
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* Please obtain a copy of the License at
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* http://www.opensource.apple.com/apsl/ and read it before using this file.
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*
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* The Original Code and all software distributed under the License are
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* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
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* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
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* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
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* Please see the License for the specific language governing rights and
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* limitations under the License.
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*
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* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
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*/
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#ifndef _SKYWALK_NAMESPACE_PROTONS_H_
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#define _SKYWALK_NAMESPACE_PROTONS_H_
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/*
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* The protons module arbitrates IP protocol number usage across Skywalk and
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* the BSD networking stack. The IP protocol number is managed globally
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* regardless of interface or IP address.
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*/
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extern int protons_init(void);
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extern void protons_fini(void);
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/* opaque token representing a protocol namespace reservation. */
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struct protons_token;
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/*
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* Reserve a IP protocol number globally.
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* Reserved protocol namespace token is return via @ptp.
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*/
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extern int protons_reserve(struct protons_token **ptp, pid_t pid, pid_t epid,
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uint8_t proto);
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/*
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* Release a IP protocol reservation recorded by the provided token.
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* *ptp will be reset to NULL after release.
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*/
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extern void protons_release(struct protons_token **ptp);
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extern int protons_token_get_use_count(struct protons_token *pt);
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extern bool protons_token_is_valid(struct protons_token *pt);
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extern bool protons_token_has_matching_pid(struct protons_token *pt, pid_t pid,
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pid_t epid);
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#endif /* !_SKYWALK_NAMESPACE_PROTONS_H_ */
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