mirror of
https://github.com/rsmarples/dhcpcd.git
synced 2024-11-27 12:03:45 +08:00
81 lines
2.6 KiB
C
81 lines
2.6 KiB
C
/*
|
|
* dhcpcd - DHCP client daemon
|
|
* Copyright (c) 2006-2014 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 ARP_H
|
|
#define ARP_H
|
|
|
|
/* ARP timings from RFC5227 */
|
|
#define PROBE_WAIT 1
|
|
#define PROBE_NUM 3
|
|
#define PROBE_MIN 1
|
|
#define PROBE_MAX 2
|
|
#define ANNOUNCE_WAIT 2
|
|
#define ANNOUNCE_NUM 2
|
|
#define ANNOUNCE_INTERVAL 2
|
|
#define MAX_CONFLICTS 10
|
|
#define RATE_LIMIT_INTERVAL 60
|
|
#define DEFEND_INTERVAL 10
|
|
|
|
#include "dhcpcd.h"
|
|
|
|
struct arp_msg {
|
|
uint16_t op;
|
|
unsigned char sha[HWADDR_LEN];
|
|
struct in_addr sip;
|
|
unsigned char tha[HWADDR_LEN];
|
|
struct in_addr tip;
|
|
};
|
|
|
|
struct arp_state {
|
|
TAILQ_ENTRY(arp_state) next;
|
|
struct interface *iface;
|
|
|
|
void (*probed_cb)(struct arp_state *);
|
|
void (*announced_cb)(struct arp_state *);
|
|
void (*conflicted_cb)(struct arp_state *, const struct arp_msg *);
|
|
|
|
struct in_addr addr;
|
|
int probes;
|
|
int claims;
|
|
struct in_addr failed;
|
|
};
|
|
TAILQ_HEAD(arp_statehead, arp_state);
|
|
|
|
#ifdef INET
|
|
void arp_report_conflicted(const struct arp_state *, const struct arp_msg *);
|
|
void arp_announce(struct arp_state *);
|
|
void arp_probe(struct arp_state *);
|
|
struct arp_state *arp_new(struct interface *);
|
|
void arp_cancel(struct arp_state *);
|
|
void arp_free(struct arp_state *);
|
|
void arp_free_but(struct arp_state *);
|
|
void arp_close(struct interface *);
|
|
#else
|
|
#define arp_close(a)
|
|
#endif
|
|
#endif
|