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contrib/dhcpcd/src/ipv6nd.h
- This file was added.
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/* SPDX-License-Identifier: BSD-2-Clause */ | |||||
/* | |||||
* dhcpcd - IPv6 ND handling | |||||
* Copyright (c) 2006-2019 Roy Marples <roy@marples.name> | |||||
* 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 IPV6ND_H | |||||
#define IPV6ND_H | |||||
#ifdef INET6 | |||||
#include <time.h> | |||||
#include "config.h" | |||||
#include "dhcpcd.h" | |||||
#include "ipv6.h" | |||||
struct ra { | |||||
TAILQ_ENTRY(ra) next; | |||||
struct interface *iface; | |||||
struct in6_addr from; | |||||
char sfrom[INET6_ADDRSTRLEN]; | |||||
uint8_t *data; | |||||
size_t data_len; | |||||
struct timespec acquired; | |||||
unsigned char flags; | |||||
uint32_t lifetime; | |||||
uint32_t reachable; | |||||
uint32_t retrans; | |||||
uint32_t mtu; | |||||
struct ipv6_addrhead addrs; | |||||
bool hasdns; | |||||
bool expired; | |||||
bool isreachable; | |||||
}; | |||||
TAILQ_HEAD(ra_head, ra); | |||||
struct rs_state { | |||||
struct nd_router_solicit *rs; | |||||
size_t rslen; | |||||
int rsprobes; | |||||
uint32_t retrans; | |||||
#ifdef __sun | |||||
int nd_fd; | |||||
#endif | |||||
}; | |||||
#define RS_STATE(a) ((struct rs_state *)(ifp)->if_data[IF_DATA_IPV6ND]) | |||||
#define RS_CSTATE(a) ((const struct rs_state *)(ifp)->if_data[IF_DATA_IPV6ND]) | |||||
#define RS_STATE_RUNNING(a) (ipv6nd_hasra((a)) && ipv6nd_dadcompleted((a))) | |||||
#ifndef MAX_RTR_SOLICITATION_DELAY | |||||
#define MAX_RTR_SOLICITATION_DELAY 1 /* seconds */ | |||||
#define MAX_UNICAST_SOLICIT 3 /* 3 transmissions */ | |||||
#define RTR_SOLICITATION_INTERVAL 4 /* seconds */ | |||||
#define MAX_RTR_SOLICITATIONS 3 /* times */ | |||||
#define MAX_NEIGHBOR_ADVERTISEMENT 3 /* 3 transmissions */ | |||||
#endif | |||||
/* On carrier up, expire known routers after RTR_CARRIER_EXPIRE seconds. */ | |||||
#define RTR_CARRIER_EXPIRE \ | |||||
(MAX_RTR_SOLICITATION_DELAY + \ | |||||
(MAX_RTR_SOLICITATIONS + 1) * \ | |||||
RTR_SOLICITATION_INTERVAL) | |||||
#define MAX_REACHABLE_TIME 3600000 /* milliseconds */ | |||||
#define REACHABLE_TIME 30000 /* milliseconds */ | |||||
#define RETRANS_TIMER 1000 /* milliseconds */ | |||||
#define DELAY_FIRST_PROBE_TIME 5 /* seconds */ | |||||
void ipv6nd_printoptions(const struct dhcpcd_ctx *, | |||||
const struct dhcp_opt *, size_t); | |||||
void ipv6nd_startrs(struct interface *); | |||||
ssize_t ipv6nd_env(FILE *, const struct interface *); | |||||
const struct ipv6_addr *ipv6nd_iffindaddr(const struct interface *ifp, | |||||
const struct in6_addr *addr, unsigned int flags); | |||||
struct ipv6_addr *ipv6nd_findaddr(struct dhcpcd_ctx *, | |||||
const struct in6_addr *, unsigned int); | |||||
ssize_t ipv6nd_free(struct interface *); | |||||
void ipv6nd_expirera(void *arg); | |||||
bool ipv6nd_hasralifetime(const struct interface *, bool); | |||||
#define ipv6nd_hasra(i) ipv6nd_hasralifetime((i), false) | |||||
bool ipv6nd_hasradhcp(const struct interface *); | |||||
void ipv6nd_handleifa(int, struct ipv6_addr *, pid_t); | |||||
int ipv6nd_dadcompleted(const struct interface *); | |||||
void ipv6nd_advertise(struct ipv6_addr *); | |||||
void ipv6nd_startexpire(struct interface *); | |||||
void ipv6nd_drop(struct interface *); | |||||
void ipv6nd_neighbour(struct dhcpcd_ctx *, struct in6_addr *, bool); | |||||
#endif /* INET6 */ | |||||
#endif /* IPV6ND_H */ |