cne_arp.h

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/* SPDX-License-Identifier: BSD-3-Clause
 * Copyright (c) 2021-2022 Intel Corporation
 * Copyright (c) 2013 6WIND S.A.
 */
 
#ifndef _CNE_ARP_H_
#define _CNE_ARP_H_
 
// IWYU pragma: no_forward_declare cne_mempool
 
#include <stdint.h>               // for uint16_t, uint32_t, uint8_t
#include <net/cne_ether.h>        // for ether_addr
#include <net/ethernet.h>         // for ether_addr
 
#ifdef __cplusplus
extern "C" {
#endif
 
struct cne_arp_ipv4 {
    struct ether_addr arp_sha; 
    uint32_t arp_sip;          
    struct ether_addr arp_tha; 
    uint32_t arp_tip;          
} __cne_packed __cne_aligned(2);
 
struct cne_arp_hdr {
    uint16_t arp_hardware;  /* format of hardware address */
#define CNE_ARP_HRD_ETHER 1 /* ARP Ethernet address format */
 
    uint16_t arp_protocol;      /* format of protocol address */
    uint8_t arp_hlen;           /* length of hardware address */
    uint8_t arp_plen;           /* length of protocol address */
    uint16_t arp_opcode;        /* ARP opcode (command) */
#define CNE_ARP_OP_REQUEST    1 /* request to resolve address */
#define CNE_ARP_OP_REPLY      2 /* response to previous request */
#define CNE_ARP_OP_REVREQUEST 3 /* request proto addr given hardware */
#define CNE_ARP_OP_REVREPLY   4 /* response giving protocol address */
#define CNE_ARP_OP_INVREQUEST 8 /* request to identify peer */
#define CNE_ARP_OP_INVREPLY   9 /* response identifying peer */
 
    struct cne_arp_ipv4 arp_data;
} __cne_packed __cne_aligned(2);
 
#ifdef __cplusplus
}
#endif
 
#endif /* _CNE_ARP_H_ */