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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2018 Intel Corporation
*/
#include <arpa/inet.h>
#include <rte_arp.h>
#define RARP_PKT_SIZE 64
struct rte_mbuf *
rte_net_make_rarp_packet(struct rte_mempool *mpool,
const struct rte_ether_addr *mac)
{
struct rte_ether_hdr *eth_hdr;
struct rte_arp_hdr *rarp;
struct rte_mbuf *mbuf;
if (mpool == NULL)
return NULL;
mbuf = rte_pktmbuf_alloc(mpool);
if (mbuf == NULL)
return NULL;
eth_hdr = (struct rte_ether_hdr *)
rte_pktmbuf_append(mbuf, RARP_PKT_SIZE);
if (eth_hdr == NULL) {
rte_pktmbuf_free(mbuf);
return NULL;
}
/* Ethernet header. */
memset(eth_hdr->d_addr.addr_bytes, 0xff, RTE_ETHER_ADDR_LEN);
rte_ether_addr_copy(mac, ð_hdr->s_addr);
eth_hdr->ether_type = htons(RTE_ETHER_TYPE_RARP);
/* RARP header. */
rarp = (struct rte_arp_hdr *)(eth_hdr + 1);
rarp->arp_hardware = htons(RTE_ARP_HRD_ETHER);
rarp->arp_protocol = htons(RTE_ETHER_TYPE_IPV4);
rarp->arp_hlen = RTE_ETHER_ADDR_LEN;
rarp->arp_plen = 4;
rarp->arp_opcode = htons(RTE_ARP_OP_REVREQUEST);
rte_ether_addr_copy(mac, &rarp->arp_data.arp_sha);
rte_ether_addr_copy(mac, &rarp->arp_data.arp_tha);
memset(&rarp->arp_data.arp_sip, 0x00, 4);
memset(&rarp->arp_data.arp_tip, 0x00, 4);
return mbuf;
}
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