/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* Fundamental constants relating to Neighbor Discovery Protocol
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*
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* Copyright (C) 1999-2017, Broadcom Corporation
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*
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* Unless you and Broadcom execute a separate written software license
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* agreement governing use of this software, this software is licensed to you
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* under the terms of the GNU General Public License version 2 (the "GPL"),
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* available at http://www.broadcom.com/licenses/GPLv2.php, with the
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* following added to such license:
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*
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* As a special exception, the copyright holders of this software give you
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* permission to link this software with independent modules, and to copy and
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* distribute the resulting executable under terms of your choice, provided that
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* you also meet, for each linked independent module, the terms and conditions of
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* the license of that module. An independent module is a module which is not
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* derived from this software. The special exception does not apply to any
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* modifications of the software.
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*
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* Notwithstanding the above, under no circumstances may you combine this
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* software in any way with any other Broadcom software provided under a license
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* other than the GPL, without Broadcom's express prior written consent.
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*
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*
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* <<Broadcom-WL-IPTag/Open:>>
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*
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* $Id: bcmipv6.h 700076 2017-05-17 14:42:22Z $
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*/
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#ifndef _bcmipv6_h_
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#define _bcmipv6_h_
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#ifndef _TYPEDEFS_H_
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#include <typedefs.h>
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#endif
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/* This marks the start of a packed structure section. */
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#include <packed_section_start.h>
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/* Extension headers */
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#define IPV6_EXT_HOP 0
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#define IPV6_EXT_ROUTE 43
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#define IPV6_EXT_FRAG 44
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#define IPV6_EXT_DEST 60
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#define IPV6_EXT_ESEC 50
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#define IPV6_EXT_AUTH 51
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/* Minimum size (extension header "word" length) */
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#define IPV6_EXT_WORD 8
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/* Offsets for most extension headers */
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#define IPV6_EXT_NEXTHDR 0
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#define IPV6_EXT_HDRLEN 1
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/* Constants specific to fragmentation header */
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#define IPV6_FRAG_MORE_MASK 0x0001
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#define IPV6_FRAG_MORE_SHIFT 0
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#define IPV6_FRAG_OFFS_MASK 0xfff8
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#define IPV6_FRAG_OFFS_SHIFT 3
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/* For icmpv6 */
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#define ICMPV6_HEADER_TYPE 0x3A
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#define ICMPV6_PKT_TYPE_RA 134
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#define ICMPV6_PKT_TYPE_NS 135
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#define ICMPV6_PKT_TYPE_NA 136
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#define ICMPV6_ND_OPT_TYPE_TARGET_MAC 2
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#define ICMPV6_ND_OPT_TYPE_SRC_MAC 1
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#define ICMPV6_ND_OPT_LEN_LINKADDR 1
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#define ICMPV6_ND_OPT_LEN_LINKADDR 1
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#define IPV6_VERSION 6
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#define IPV6_HOP_LIMIT 255
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#define IPV6_ADDR_NULL(a) ((a[0] | a[1] | a[2] | a[3] | a[4] | \
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a[5] | a[6] | a[7] | a[8] | a[9] | \
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a[10] | a[11] | a[12] | a[13] | \
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a[14] | a[15]) == 0)
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#define IPV6_ADDR_LOCAL(a) (((a[0] == 0xfe) && (a[1] & 0x80))? TRUE: FALSE)
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/* IPV6 address */
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BWL_PRE_PACKED_STRUCT struct ipv6_addr {
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uint8 addr[16];
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} BWL_POST_PACKED_STRUCT;
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/* ICMPV6 Header */
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BWL_PRE_PACKED_STRUCT struct icmp6_hdr {
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uint8 icmp6_type;
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uint8 icmp6_code;
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uint16 icmp6_cksum;
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BWL_PRE_PACKED_STRUCT union {
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uint32 reserved;
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BWL_PRE_PACKED_STRUCT struct nd_advt {
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uint32 reserved1:5,
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override:1,
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solicited:1,
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router:1,
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reserved2:24;
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} BWL_POST_PACKED_STRUCT nd_advt;
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} BWL_POST_PACKED_STRUCT opt;
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} BWL_POST_PACKED_STRUCT;
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/* Ipv6 Header Format */
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BWL_PRE_PACKED_STRUCT struct ipv6_hdr {
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uint8 priority:4,
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version:4;
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uint8 flow_lbl[3];
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uint16 payload_len;
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uint8 nexthdr;
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uint8 hop_limit;
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struct ipv6_addr saddr;
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struct ipv6_addr daddr;
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} BWL_POST_PACKED_STRUCT;
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/* Neighbor Advertisement/Solicitation Packet Structure */
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BWL_PRE_PACKED_STRUCT struct bcm_nd_msg {
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struct icmp6_hdr icmph;
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struct ipv6_addr target;
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} BWL_POST_PACKED_STRUCT;
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/* Neighibor Solicitation/Advertisement Optional Structure */
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BWL_PRE_PACKED_STRUCT struct nd_msg_opt {
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uint8 type;
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uint8 len;
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uint8 mac_addr[ETHER_ADDR_LEN];
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} BWL_POST_PACKED_STRUCT;
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/* Ipv6 Fragmentation Header */
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BWL_PRE_PACKED_STRUCT struct ipv6_frag {
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uint8 nexthdr;
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uint8 reserved;
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uint16 frag_offset;
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uint32 ident;
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} BWL_POST_PACKED_STRUCT;
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/* This marks the end of a packed structure section. */
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#include <packed_section_end.h>
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static const struct ipv6_addr all_node_ipv6_maddr = {
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{ 0xff, 0x2, 0, 0,
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0, 0, 0, 0,
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0, 0, 0, 0,
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0, 0, 0, 1
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}};
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#define IPV6_ISMULTI(a) (a[0] == 0xff)
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#define IPV6_MCAST_TO_ETHER_MCAST(ipv6, ether) \
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{ \
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ether[0] = 0x33; \
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ether[1] = 0x33; \
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ether[2] = ipv6[12]; \
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ether[3] = ipv6[13]; \
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ether[4] = ipv6[14]; \
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ether[5] = ipv6[15]; \
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}
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#endif /* !defined(_bcmipv6_h_) */
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