[GitHub/LineageOS/G12/android_hardware_amlogic_kernel-modules_dhd-driver.git] / bcmdhd.101.10.240.x / include / bcmipv6.h

/*
 * Fundamental constants relating to Neighbor Discovery 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 _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_RA	134
#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;

/* use masks, htonl instead of bit fileds */

/* 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 bcm_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_) */
Commit	Line	Data
1b4a7c03 LJ	1	/*
	2	* Fundamental constants relating to Neighbor Discovery Protocol
	3	*
	4	* Copyright (C) 2020, Broadcom.
	5	*
	6	* Unless you and Broadcom execute a separate written software license
	7	* agreement governing use of this software, this software is licensed to you
	8	* under the terms of the GNU General Public License version 2 (the "GPL"),
	9	* available at http://www.broadcom.com/licenses/GPLv2.php, with the
	10	* following added to such license:
	11	*
	12	* As a special exception, the copyright holders of this software give you
	13	* permission to link this software with independent modules, and to copy and
	14	* distribute the resulting executable under terms of your choice, provided that
	15	* you also meet, for each linked independent module, the terms and conditions of
	16	* the license of that module. An independent module is a module which is not
	17	* derived from this software. The special exception does not apply to any
	18	* modifications of the software.
	19	*
	20	*
	21	* <<Broadcom-WL-IPTag/Dual:>>
	22	*/
	23
	24	#ifndef _bcmipv6_h_
	25	#define _bcmipv6_h_
	26
	27	#ifndef _TYPEDEFS_H_
	28	#include <typedefs.h>
	29	#endif
	30
	31	/* This marks the start of a packed structure section. */
	32	#include <packed_section_start.h>
	33
	34	/* Extension headers */
	35	#define IPV6_EXT_HOP 0
	36	#define IPV6_EXT_ROUTE 43
	37	#define IPV6_EXT_FRAG 44
	38	#define IPV6_EXT_DEST 60
	39	#define IPV6_EXT_ESEC 50
	40	#define IPV6_EXT_AUTH 51
	41
	42	/* Minimum size (extension header "word" length) */
	43	#define IPV6_EXT_WORD 8
	44
	45	/* Offsets for most extension headers */
	46	#define IPV6_EXT_NEXTHDR 0
	47	#define IPV6_EXT_HDRLEN 1
	48
	49	/* Constants specific to fragmentation header */
	50	#define IPV6_FRAG_MORE_MASK 0x0001
	51	#define IPV6_FRAG_MORE_SHIFT 0
	52	#define IPV6_FRAG_OFFS_MASK 0xfff8
	53	#define IPV6_FRAG_OFFS_SHIFT 3
	54
	55	/* For icmpv6 */
	56	#define ICMPV6_HEADER_TYPE 0x3A
	57	#define ICMPV6_PKT_TYPE_RA 134
	58	#define ICMPV6_PKT_TYPE_NS 135
	59	#define ICMPV6_PKT_TYPE_NA 136
	60
	61	#define ICMPV6_ND_OPT_TYPE_TARGET_MAC 2
	62	#define ICMPV6_ND_OPT_TYPE_SRC_MAC 1
	63
	64	#define ICMPV6_ND_OPT_LEN_LINKADDR 1
65
66	#define ICMPV6_ND_OPT_LEN_LINKADDR 1
67
68	#define IPV6_VERSION 6
69	#define IPV6_HOP_LIMIT 255
70
71	#define IPV6_ADDR_NULL(a) ((a[0] \| a[1] \| a[2] \| a[3] \| a[4] \| \
72	a[5] \| a[6] \| a[7] \| a[8] \| a[9] \| \
73	a[10] \| a[11] \| a[12] \| a[13] \| \
74	a[14] \| a[15]) == 0)
75
76	#define IPV6_ADDR_LOCAL(a) (((a[0] == 0xfe) && (a[1] & 0x80))? TRUE: FALSE)
77
78	/* IPV6 address */
79	BWL_PRE_PACKED_STRUCT struct ipv6_addr {
80	uint8 addr[16];
81	} BWL_POST_PACKED_STRUCT;
82
83	/* use masks, htonl instead of bit fileds */
84
85	/* ICMPV6 Header */
86	BWL_PRE_PACKED_STRUCT struct icmp6_hdr {
87	uint8 icmp6_type;
88	uint8 icmp6_code;
89	uint16 icmp6_cksum;
90	BWL_PRE_PACKED_STRUCT union {
91	uint32 reserved;
92	BWL_PRE_PACKED_STRUCT struct nd_advt {
93	uint32 reserved1:5,
94	override:1,
95	solicited:1,
96	router:1,
97	reserved2:24;
98	} BWL_POST_PACKED_STRUCT nd_advt;
99	} BWL_POST_PACKED_STRUCT opt;
100	} BWL_POST_PACKED_STRUCT;
101
102	/* Ipv6 Header Format */
103	BWL_PRE_PACKED_STRUCT struct ipv6_hdr {
104	uint8 priority:4,
105	version:4;
106	uint8 flow_lbl[3];
107	uint16 payload_len;
108	uint8 nexthdr;
109	uint8 hop_limit;
110	struct ipv6_addr saddr;
111	struct ipv6_addr daddr;
112	} BWL_POST_PACKED_STRUCT;
113
114	/* Neighbor Advertisement/Solicitation Packet Structure */
115	BWL_PRE_PACKED_STRUCT struct bcm_nd_msg {
116	struct icmp6_hdr icmph;
117	struct ipv6_addr target;
118	} BWL_POST_PACKED_STRUCT;
119
120	/* Neighibor Solicitation/Advertisement Optional Structure */
121	BWL_PRE_PACKED_STRUCT struct nd_msg_opt {
122	uint8 type;
123	uint8 len;
124	uint8 mac_addr[ETHER_ADDR_LEN];
125	} BWL_POST_PACKED_STRUCT;
126
127	/* Ipv6 Fragmentation Header */
128	BWL_PRE_PACKED_STRUCT struct ipv6_frag {
129	uint8 nexthdr;
130	uint8 reserved;
131	uint16 frag_offset;
132	uint32 ident;
133	} BWL_POST_PACKED_STRUCT;
134
135	/* This marks the end of a packed structure section. */
136	#include <packed_section_end.h>
137
138	static const struct ipv6_addr all_node_ipv6_maddr = {
139	{ 0xff, 0x2, 0, 0,
140	0, 0, 0, 0,
141	0, 0, 0, 0,
142	0, 0, 0, 1
143	}};
144
145	#define IPV6_ISMULTI(a) (a[0] == 0xff)
146
147	#define IPV6_MCAST_TO_ETHER_MCAST(ipv6, ether) \
148	{ \
149	ether[0] = 0x33; \
150	ether[1] = 0x33; \
151	ether[2] = ipv6[12]; \
152	ether[3] = ipv6[13]; \
153	ether[4] = ipv6[14]; \
154	ether[5] = ipv6[15]; \
155	}
156
157	#endif /* !defined(_bcmipv6_h_) */