blob: 28cafe5f20ab915bad0f1846f5c3382728ac34e0 [file] [log] [blame]
/*
* Copyright (c) 2016 Intel Corporation
*
* SPDX-License-Identifier: Apache-2.0
*/
#ifndef __ARP_H
#define __ARP_H
#if defined(CONFIG_NET_ARP) && defined(CONFIG_NET_NATIVE)
#include <zephyr/sys/slist.h>
#include <zephyr/net/ethernet.h>
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief Address resolution (ARP) library
* @defgroup arp ARP Library
* @ingroup networking
* @{
*/
#define NET_ARP_HDR(pkt) ((struct net_arp_hdr *)net_pkt_data(pkt))
struct net_arp_hdr {
uint16_t hwtype; /* HTYPE */
uint16_t protocol; /* PTYPE */
uint8_t hwlen; /* HLEN */
uint8_t protolen; /* PLEN */
uint16_t opcode;
struct net_eth_addr src_hwaddr; /* SHA */
uint8_t src_ipaddr[NET_IPV4_ADDR_SIZE]; /* SPA */
struct net_eth_addr dst_hwaddr; /* THA */
uint8_t dst_ipaddr[NET_IPV4_ADDR_SIZE]; /* TPA */
} __packed;
#define NET_ARP_HTYPE_ETH 1
#define NET_ARP_IPV4_PTYPE_SIZE 4
#define NET_ARP_REQUEST 1
#define NET_ARP_REPLY 2
struct net_pkt *net_arp_prepare(struct net_pkt *pkt,
struct in_addr *request_ip,
struct in_addr *current_ip);
enum net_verdict net_arp_input(struct net_pkt *pkt,
struct net_eth_hdr *eth_hdr);
int net_arp_clear_pending(struct net_if *iface,
struct in_addr *dst);
struct arp_entry {
sys_snode_t node;
uint32_t req_start;
struct net_if *iface;
struct in_addr ip;
struct net_eth_addr eth;
struct k_fifo pending_queue;
};
typedef void (*net_arp_cb_t)(struct arp_entry *entry,
void *user_data);
int net_arp_foreach(net_arp_cb_t cb, void *user_data);
void net_arp_clear_cache(struct net_if *iface);
void net_arp_init(void);
/**
* @}
*/
#ifdef __cplusplus
}
#endif
#else /* CONFIG_NET_ARP */
#define net_arp_prepare(_kt, _u1, _u2) _kt
#define net_arp_input(...) NET_OK
#define net_arp_clear_cache(...)
#define net_arp_foreach(...) 0
#define net_arp_init(...)
#define net_arp_clear_pending(...) 0
#endif /* CONFIG_NET_ARP */
#endif /* __ARP_H */