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