rte_arp.h

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/* SPDX-License-Identifier: BSD-3-Clause
 * Copyright(c) 2013 6WIND S.A.
 */

#ifndef _RTE_ARP_H_
#define _RTE_ARP_H_

#include <stdint.h>
#include <rte_ether.h>

#ifdef __cplusplus
extern "C" {
#endif

struct arp_ipv4 {
    struct ether_addr arp_sha;  
    uint32_t          arp_sip;  
    struct ether_addr arp_tha;  
    uint32_t          arp_tip;  
} __attribute__((__packed__));

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__));

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_ */