89 lines
2.9 KiB
C
89 lines
2.9 KiB
C
/*
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* Copyright (c) 2021 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_FLOWIDNS_H_
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#define _SKYWALK_NAMESPACE_FLOWIDNS_H_
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/*
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* The flowidns (Flow ID namespace) module provides functionality to allocate
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* globally unique identifier for a flow.
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*/
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typedef uint32_t flowidns_flowid_t;
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typedef enum {
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FLOWIDNS_DOMAIN_MIN = 0,
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FLOWIDNS_DOMAIN_IPSEC = FLOWIDNS_DOMAIN_MIN,
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FLOWIDNS_DOMAIN_FLOWSWITCH,
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FLOWIDNS_DOMAIN_INPCB,
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FLOWIDNS_DOMAIN_PF,
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FLOWIDNS_DOMAIN_MAX = FLOWIDNS_DOMAIN_PF
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} flowidns_domain_id_t;
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struct flowidns_flow_key {
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union {
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struct in_addr _v4;
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struct in6_addr _v6;
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} ffk_laddr; /* local IP address */
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union {
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struct in_addr _v4;
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struct in6_addr _v6;
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} ffk_raddr; /* remote IP address */
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union {
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struct {
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uint16_t _lport; /* local port */
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uint16_t _rport; /* remote port */
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} ffk_ports;
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uint32_t ffk_spi; /* IPSec ESP/AH SPI */
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uint32_t ffk_protoid; /* opaque protocol id */
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};
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uint8_t ffk_af; /* IP address family AF_INET* */
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uint8_t ffk_proto; /* IP protocol IP_PROTO_* */
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};
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#define ffk_laddr_v4 ffk_laddr._v4
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#define ffk_laddr_v6 ffk_laddr._v6
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#define ffk_raddr_v4 ffk_raddr._v4
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#define ffk_raddr_v6 ffk_raddr._v6
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#define ffk_lport ffk_ports._lport
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#define ffk_rport ffk_ports._rport
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extern int flowidns_init(void);
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extern void flowidns_fini(void);
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/*
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* Allocate a globally unique flow identifier.
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*/
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extern void flowidns_allocate_flowid(flowidns_domain_id_t domain,
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struct flowidns_flow_key *flow_key, flowidns_flowid_t *flowid);
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/*
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* Release an allocated flow identifier.
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*/
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extern void flowidns_release_flowid(flowidns_flowid_t flowid);
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#endif /* !_SKYWALK_NAMESPACE_FLOWIDNS_H_ */
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