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/*
* Copyright (C) 1999-2016, Broadcom Corporation
*
* 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.
*
* Notwithstanding the above, under no circumstances may you combine this
* software in any way with any other Broadcom software provided under a license
* other than the GPL, without Broadcom's express prior written consent.
*
* Fundamental constants relating to Neighbor Discovery Protocol
*
* $Id: bcmipv6.h 399482 2013-04-30 09:24:37Z $
*/
#ifndef _bcmipv6_h_
#define _bcmipv6_h_
#ifndef _TYPEDEFS_H_
#include <typedefs.h>
#endif
/* This marks the start of a packed structure section. */
#include <packed_section_start.h>
/* Extension headers */
#define IPV6_EXT_HOP 0
#define IPV6_EXT_ROUTE 43
#define IPV6_EXT_FRAG 44
#define IPV6_EXT_DEST 60
#define IPV6_EXT_ESEC 50
#define IPV6_EXT_AUTH 51
/* Minimum size (extension header "word" length) */
#define IPV6_EXT_WORD 8
/* Offsets for most extension headers */
#define IPV6_EXT_NEXTHDR 0
#define IPV6_EXT_HDRLEN 1
/* Constants specific to fragmentation header */
#define IPV6_FRAG_MORE_MASK 0x0001
#define IPV6_FRAG_MORE_SHIFT 0
#define IPV6_FRAG_OFFS_MASK 0xfff8
#define IPV6_FRAG_OFFS_SHIFT 3
/* For icmpv6 */
#define ICMPV6_HEADER_TYPE 0x3A
#define ICMPV6_PKT_TYPE_NS 135
#define ICMPV6_PKT_TYPE_NA 136
#define ICMPV6_ND_OPT_TYPE_TARGET_MAC 2
#define ICMPV6_ND_OPT_TYPE_SRC_MAC 1
#define ICMPV6_ND_OPT_LEN_LINKADDR 1
#define ICMPV6_ND_OPT_LEN_LINKADDR 1
#define IPV6_VERSION 6
#define IPV6_HOP_LIMIT 255
#define IPV6_ADDR_NULL(a) ((a[0] | a[1] | a[2] | a[3] | a[4] | \
a[5] | a[6] | a[7] | a[8] | a[9] | \
a[10] | a[11] | a[12] | a[13] | \
a[14] | a[15]) == 0)
#define IPV6_ADDR_LOCAL(a) (((a[0] == 0xfe) && (a[1] & 0x80))? TRUE: FALSE)
/* IPV6 address */
BWL_PRE_PACKED_STRUCT struct ipv6_addr {
uint8 addr[16];
} BWL_POST_PACKED_STRUCT;
/* ICMPV6 Header */
BWL_PRE_PACKED_STRUCT struct icmp6_hdr {
uint8 icmp6_type;
uint8 icmp6_code;
uint16 icmp6_cksum;
BWL_PRE_PACKED_STRUCT union {
uint32 reserved;
BWL_PRE_PACKED_STRUCT struct nd_advt {
uint32 reserved1:5,
override:1,
solicited:1,
router:1,
reserved2:24;
} BWL_POST_PACKED_STRUCT nd_advt;
} BWL_POST_PACKED_STRUCT opt;
} BWL_POST_PACKED_STRUCT;
/* Ipv6 Header Format */
BWL_PRE_PACKED_STRUCT struct ipv6_hdr {
uint8 priority:4,
version:4;
uint8 flow_lbl[3];
uint16 payload_len;
uint8 nexthdr;
uint8 hop_limit;
struct ipv6_addr saddr;
struct ipv6_addr daddr;
} BWL_POST_PACKED_STRUCT;
/* Neighbor Advertisement/Solicitation Packet Structure */
BWL_PRE_PACKED_STRUCT struct nd_msg {
struct icmp6_hdr icmph;
struct ipv6_addr target;
} BWL_POST_PACKED_STRUCT;
/* Neighibor Solicitation/Advertisement Optional Structure */
BWL_PRE_PACKED_STRUCT struct nd_msg_opt {
uint8 type;
uint8 len;
uint8 mac_addr[ETHER_ADDR_LEN];
} BWL_POST_PACKED_STRUCT;
/* Ipv6 Fragmentation Header */
BWL_PRE_PACKED_STRUCT struct ipv6_frag {
uint8 nexthdr;
uint8 reserved;
uint16 frag_offset;
uint32 ident;
} BWL_POST_PACKED_STRUCT;
/* This marks the end of a packed structure section. */
#include <packed_section_end.h>
static const struct ipv6_addr all_node_ipv6_maddr = {
{ 0xff, 0x2, 0, 0,
0, 0, 0, 0,
0, 0, 0, 0,
0, 0, 0, 1
}};
#define IPV6_ISMULTI(a) (a[0] == 0xff)
#define IPV6_MCAST_TO_ETHER_MCAST(ipv6, ether) \
{ \
ether[0] = 0x33; \
ether[1] = 0x33; \
ether[2] = ipv6[12]; \
ether[3] = ipv6[13]; \
ether[4] = ipv6[14]; \
ether[5] = ipv6[15]; \
}
#endif /* !defined(_bcmipv6_h_) */
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