1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2018 Intel Corporation
6 #include <rte_byteorder.h>
8 #define RARP_PKT_SIZE 64
10 rte_net_make_rarp_packet(struct rte_mempool *mpool,
11 const struct rte_ether_addr *mac)
13 struct rte_ether_hdr *eth_hdr;
14 struct rte_arp_hdr *rarp;
15 struct rte_mbuf *mbuf;
20 mbuf = rte_pktmbuf_alloc(mpool);
24 eth_hdr = (struct rte_ether_hdr *)
25 rte_pktmbuf_append(mbuf, RARP_PKT_SIZE);
26 if (eth_hdr == NULL) {
27 rte_pktmbuf_free(mbuf);
31 /* Ethernet header. */
32 memset(eth_hdr->d_addr.addr_bytes, 0xff, RTE_ETHER_ADDR_LEN);
33 rte_ether_addr_copy(mac, ð_hdr->s_addr);
34 eth_hdr->ether_type = RTE_BE16(RTE_ETHER_TYPE_RARP);
37 rarp = (struct rte_arp_hdr *)(eth_hdr + 1);
38 rarp->arp_hardware = RTE_BE16(RTE_ARP_HRD_ETHER);
39 rarp->arp_protocol = RTE_BE16(RTE_ETHER_TYPE_IPV4);
40 rarp->arp_hlen = RTE_ETHER_ADDR_LEN;
42 rarp->arp_opcode = RTE_BE16(RTE_ARP_OP_REVREQUEST);
44 rte_ether_addr_copy(mac, &rarp->arp_data.arp_sha);
45 rte_ether_addr_copy(mac, &rarp->arp_data.arp_tha);
46 memset(&rarp->arp_data.arp_sip, 0x00, 4);
47 memset(&rarp->arp_data.arp_tip, 0x00, 4);