--- /dev/null
+/*
+ * Fundamental constants relating to ARP Protocol
+ *
+ * Copyright (C) 2020, Broadcom.
+ *
+ * Unless you and Broadcom execute a separate written software license
+ * agreement governing use of this software, this software is licensed to you
+ * under the terms of the GNU General Public License version 2 (the "GPL"),
+ * available at http://www.broadcom.com/licenses/GPLv2.php, with the
+ * following added to such license:
+ *
+ * As a special exception, the copyright holders of this software give you
+ * permission to link this software with independent modules, and to copy and
+ * distribute the resulting executable under terms of your choice, provided that
+ * you also meet, for each linked independent module, the terms and conditions of
+ * the license of that module. An independent module is a module which is not
+ * derived from this software. The special exception does not apply to any
+ * modifications of the software.
+ *
+ *
+ * <<Broadcom-WL-IPTag/Dual:>>
+ */
+
+#ifndef _bcmarp_h_
+#define _bcmarp_h_
+
+#ifndef _TYPEDEFS_H_
+#include <typedefs.h>
+#endif
+#include <bcmip.h>
+
+/* This marks the start of a packed structure section. */
+#include <packed_section_start.h>
+
+#define ARP_OPC_OFFSET 6 /* option code offset */
+#define ARP_SRC_ETH_OFFSET 8 /* src h/w address offset */
+#define ARP_SRC_IP_OFFSET 14 /* src IP address offset */
+#define ARP_TGT_ETH_OFFSET 18 /* target h/w address offset */
+#define ARP_TGT_IP_OFFSET 24 /* target IP address offset */
+
+#define ARP_OPC_REQUEST 1 /* ARP request */
+#define ARP_OPC_REPLY 2 /* ARP reply */
+
+#define ARP_DATA_LEN 28 /* ARP data length */
+
+#define HTYPE_ETHERNET 1 /* htype for ethernet */
+BWL_PRE_PACKED_STRUCT struct bcmarp {
+ uint16 htype; /* Header type (1 = ethernet) */
+ uint16 ptype; /* Protocol type (0x800 = IP) */
+ uint8 hlen; /* Hardware address length (Eth = 6) */
+ uint8 plen; /* Protocol address length (IP = 4) */
+ uint16 oper; /* ARP_OPC_... */
+ uint8 src_eth[ETHER_ADDR_LEN]; /* Source hardware address */
+ uint8 src_ip[IPV4_ADDR_LEN]; /* Source protocol address (not aligned) */
+ uint8 dst_eth[ETHER_ADDR_LEN]; /* Destination hardware address */
+ uint8 dst_ip[IPV4_ADDR_LEN]; /* Destination protocol address */
+} BWL_POST_PACKED_STRUCT;
+
+/* Ethernet header + Arp message */
+BWL_PRE_PACKED_STRUCT struct bcmetharp {
+ struct ether_header eh;
+ struct bcmarp arp;
+} BWL_POST_PACKED_STRUCT;
+
+/* IPv6 Neighbor Advertisement */
+#define NEIGHBOR_ADVERTISE_SRC_IPV6_OFFSET 8 /* src IPv6 address offset */
+#define NEIGHBOR_ADVERTISE_TYPE_OFFSET 40 /* type offset */
+#define NEIGHBOR_ADVERTISE_CHECKSUM_OFFSET 42 /* check sum offset */
+#define NEIGHBOR_ADVERTISE_FLAGS_OFFSET 44 /* R,S and O flags offset */
+#define NEIGHBOR_ADVERTISE_TGT_IPV6_OFFSET 48 /* target IPv6 address offset */
+#define NEIGHBOR_ADVERTISE_OPTION_OFFSET 64 /* options offset */
+#define NEIGHBOR_ADVERTISE_TYPE 136
+#define NEIGHBOR_SOLICITATION_TYPE 135
+
+#define OPT_TYPE_SRC_LINK_ADDR 1
+#define OPT_TYPE_TGT_LINK_ADDR 2
+
+#define NEIGHBOR_ADVERTISE_DATA_LEN 72 /* neighbor advertisement data length */
+#define NEIGHBOR_ADVERTISE_FLAGS_VALUE 0x60 /* R=0, S=1 and O=1 */
+
+/* This marks the end of a packed structure section. */
+#include <packed_section_end.h>
+
+#endif /* !defined(_bcmarp_h_) */