1 /* SPDX-License-Identifier: BSD-3-Clause 2 * Copyright(c) 2013 6WIND S.A. 3 */ 4 5 #ifndef _RTE_ARP_H_ 6 #define _RTE_ARP_H_ 7 8 /** 9 * @file 10 * 11 * ARP-related defines 12 */ 13 14 #include <stdint.h> 15 #include <rte_ether.h> 16 17 #ifdef __cplusplus 18 extern "C" { 19 #endif 20 21 /** 22 * ARP header IPv4 payload. 23 */ 24 struct __rte_aligned(2) __rte_packed_begin rte_arp_ipv4 { 25 struct rte_ether_addr arp_sha; /**< sender hardware address */ 26 rte_be32_t arp_sip; /**< sender IP address */ 27 struct rte_ether_addr arp_tha; /**< target hardware address */ 28 rte_be32_t arp_tip; /**< target IP address */ 29 } __rte_packed_end; 30 31 /** 32 * ARP header. 33 */ 34 struct __rte_aligned(2) __rte_packed_begin rte_arp_hdr { 35 rte_be16_t arp_hardware; /**< format of hardware address */ 36 #define RTE_ARP_HRD_ETHER 1 /**< ARP Ethernet address format */ 37 38 rte_be16_t arp_protocol; /**< format of protocol address */ 39 uint8_t arp_hlen; /**< length of hardware address */ 40 uint8_t arp_plen; /**< length of protocol address */ 41 rte_be16_t arp_opcode; /**< ARP opcode (command) */ 42 #define RTE_ARP_OP_REQUEST 1 /**< request to resolve address */ 43 #define RTE_ARP_OP_REPLY 2 /**< response to previous request */ 44 #define RTE_ARP_OP_REVREQUEST 3 /**< request proto addr given hardware */ 45 #define RTE_ARP_OP_REVREPLY 4 /**< response giving protocol address */ 46 #define RTE_ARP_OP_INVREQUEST 8 /**< request to identify peer */ 47 #define RTE_ARP_OP_INVREPLY 9 /**< response identifying peer */ 48 49 struct rte_arp_ipv4 arp_data; 50 } __rte_packed_end; 51 52 /** 53 * Make a RARP packet based on MAC addr. 54 * 55 * @param mpool 56 * Pointer to the rte_mempool 57 * @param mac 58 * Pointer to the MAC addr 59 * 60 * @return 61 * - RARP packet pointer on success, or NULL on error 62 */ 63 struct rte_mbuf * 64 rte_net_make_rarp_packet(struct rte_mempool *mpool, 65 const struct rte_ether_addr *mac); 66 67 #ifdef __cplusplus 68 } 69 #endif 70 71 #endif /* _RTE_ARP_H_ */ 72