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+/* BSD LICENSE
+ *
+ * Copyright(c) 2013 6WIND.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * * Neither the name of 6WIND S.A. nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef _RTE_ARP_H_
+#define _RTE_ARP_H_
+
+/**
+ * @file
+ *
+ * ARP-related defines
+ */
+
+#include <stdint.h>
+#include <rte_ether.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * ARP header IPv4 payload.
+ */
+struct arp_ipv4 {
+ struct ether_addr arp_sha; /**< sender hardware address */
+ uint32_t arp_sip; /**< sender IP address */
+ struct ether_addr arp_tha; /**< target hardware address */
+ uint32_t arp_tip; /**< target IP address */
+} __attribute__((__packed__));
+
+/**
+ * ARP header.
+ */
+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__));
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _RTE_ARP_H_ */