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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2013 6WIND S.A.
*/
#ifndef _RTE_ARP_H_
#define _RTE_ARP_H_
/**
* @file
*
* ARP-related defines
*/
#include <stdint.h>
#include <rte_ether.h>
#ifdef __cplusplus
extern "C" {
#endif
/**
* ARP header IPv4 payload.
*/
struct arp_ipv4 {
struct ether_addr arp_sha; /**< sender hardware address */
uint32_t arp_sip; /**< sender IP address */
struct ether_addr arp_tha; /**< target hardware address */
uint32_t arp_tip; /**< target IP address */
} __attribute__((__packed__));
/**
* ARP header.
*/
struct arp_hdr {
uint16_t arp_hrd; /* format of hardware address */
#define ARP_HRD_ETHER 1 /* ARP Ethernet address format */
uint16_t arp_pro; /* format of protocol address */
uint8_t arp_hln; /* length of hardware address */
uint8_t arp_pln; /* length of protocol address */
uint16_t arp_op; /* ARP opcode (command) */
#define ARP_OP_REQUEST 1 /* request to resolve address */
#define ARP_OP_REPLY 2 /* response to previous request */
#define ARP_OP_REVREQUEST 3 /* request proto addr given hardware */
#define ARP_OP_REVREPLY 4 /* response giving protocol address */
#define ARP_OP_INVREQUEST 8 /* request to identify peer */
#define ARP_OP_INVREPLY 9 /* response identifying peer */
struct arp_ipv4 arp_data;
} __attribute__((__packed__));
/**
* @warning
* @b EXPERIMENTAL: this API may change without prior notice
*
* Make a RARP packet based on MAC addr.
*
* @param mpool
* Pointer to the rte_mempool
* @param mac
* Pointer to the MAC addr
*
* @return
* - RARP packet pointer on success, or NULL on error
*/
struct rte_mbuf * __rte_experimental
rte_net_make_rarp_packet(struct rte_mempool *mpool,
const struct ether_addr *mac);
#ifdef __cplusplus
}
#endif
#endif /* _RTE_ARP_H_ */
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