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/*
* dhcpcd - DHCP client daemon
* Copyright (c) 2006-2013 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
#include <sys/queue.h>
#include <time.h>
#include "dhcpcd.h"
#include "ipv6.h"
struct ra_opt {
TAILQ_ENTRY(ra_opt) next;
uint8_t type;
struct timeval expire;
char *option;
};
struct ra {
TAILQ_ENTRY(ra) next;
struct interface *iface;
struct in6_addr from;
char sfrom[INET6_ADDRSTRLEN];
unsigned char *data;
ssize_t data_len;
struct timeval received;
unsigned char flags;
uint32_t lifetime;
uint32_t reachable;
uint32_t retrans;
uint32_t mtu;
struct ipv6_addrhead addrs;
TAILQ_HEAD(, ra_opt) options;
unsigned char *ns;
size_t nslen;
int nsprobes;
int expired;
};
extern TAILQ_HEAD(rahead, ra) ipv6_routers;
struct rs_state {
unsigned char *rs;
size_t rslen;
int rsprobes;
};
#define RS_STATE(a) ((struct rs_state *)(ifp)->if_data[IF_DATA_IPV6ND])
#define MAX_REACHABLE_TIME 3600 /* seconds */
#define REACHABLE_TIME 30 /* seconds */
#define RETRANS_TIMER 1000 /* milliseconds */
#define DELAY_FIRST_PROBE_TIME 5 /* seconds */
#ifdef INET6
int ipv6nd_startrs(struct interface *);
ssize_t ipv6nd_env(char **, const char *, const struct interface *);
int ipv6nd_addrexists(const struct ipv6_addr *);
void ipv6nd_freedrop_ra(struct ra *, int);
#define ipv6nd_free_ra(ra) ipv6nd_freedrop_ra((ra), 0)
#define ipv6nd_drop_ra(ra) ipv6nd_freedrop_ra((ra), 1)
ssize_t ipv6nd_free(struct interface *);
void ipv6nd_expirera(void *arg);
int ipv6nd_has_ra(const struct interface *);
void ipv6nd_handleifa(int, const char *, const struct in6_addr *, int);
void ipv6nd_drop(struct interface *);
void ipv6nd_probeaddr(void *);
ssize_t ipv6nd_probeaddrs(struct ipv6_addrhead *);
void ipv6nd_proberouter(void *);
void ipv6nd_cancelproberouter(struct ra *);
#ifdef LISTEN_DAD
void ipv6nd_cancelprobeaddr(struct ipv6_addr *);
#else
#define ipv6nd_cancelprobeaddr(a)
#endif
#else
#define ipv6nd_startrs(a) {}
#define ipv6nd_addrexists(a) (0)
#define ipv6nd_free(a)
#define ipv6nd_has_ra(a) 0
#define ipv6nd_drop(a)
#endif
#endif
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