ca13483a3c
Vast majority of rtalloc(9) users require only basic info from route table (e.g. "does the rtentry interface match with the interface I have?". "what is the MTU?", "Give me the IPv4 source address to use", etc..). Instead of hand-rolling lookups, checking if rtentry is up, valid, dealing with IPv6 mtu, finding "address" ifp (almost never done right), provide easy-to-use API hiding all the complexity and returning the needed info into small on-stack structure. This change also helps hiding route subsystem internals (locking, direct rtentry accesses). Additionaly, using this API improves lookup performance since rtentry is not locked. (This is safe, since all the rtentry changes happens under both radix WLOCK and rtentry WLOCK). Sponsored by: Yandex LLC
71 lines
2.9 KiB
C
71 lines
2.9 KiB
C
/*-
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* Copyright (C) 2000 WIDE Project.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the project nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $KAME: scope6_var.h,v 1.4 2000/05/18 15:03:27 jinmei Exp $
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* $FreeBSD$
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*/
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#ifndef _NETINET6_SCOPE6_VAR_H_
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#define _NETINET6_SCOPE6_VAR_H_
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#ifdef _KERNEL
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#include <net/vnet.h>
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#define IPV6_ADDR_SCOPES_COUNT 16
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struct scope6_id {
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/*
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* 16 is correspondent to 4bit multicast scope field.
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* i.e. from node-local to global with some reserved/unassigned types.
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*/
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uint32_t s6id_list[IPV6_ADDR_SCOPES_COUNT];
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};
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VNET_DECLARE(int, deembed_scopeid);
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#define V_deembed_scopeid VNET(deembed_scopeid)
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void scope6_init(void);
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struct scope6_id *scope6_ifattach(struct ifnet *);
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void scope6_ifdetach(struct scope6_id *);
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int scope6_ioctl(u_long cmd, caddr_t data, struct ifnet *);
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void scope6_setdefault(struct ifnet *);
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int scope6_get_default(struct scope6_id *);
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u_int32_t scope6_addr2default(struct in6_addr *);
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int sa6_embedscope(struct sockaddr_in6 *, int);
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int sa6_recoverscope(struct sockaddr_in6 *);
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int sa6_checkzone(struct sockaddr_in6 *);
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int sa6_checkzone_ifp(struct ifnet *, struct sockaddr_in6 *);
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int in6_setscope(struct in6_addr *, struct ifnet *, u_int32_t *);
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int in6_clearscope(struct in6_addr *);
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uint16_t in6_getscope(struct in6_addr *);
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uint32_t in6_getscopezone(const struct ifnet *, int);
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void in6_splitscope(const struct in6_addr *, struct in6_addr *, uint32_t *);
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struct ifnet* in6_getlinkifnet(uint32_t);
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#endif /* _KERNEL */
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#endif /* _NETINET6_SCOPE6_VAR_H_ */
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