/* Copyright (C) 1991-2018 Free Software Foundation, Inc.

[0] Fix | Delete

This file is part of the GNU C Library.

[1] Fix | Delete

[2] Fix | Delete

The GNU C Library is free software; you can redistribute it and/or

[3] Fix | Delete

modify it under the terms of the GNU Lesser General Public

[4] Fix | Delete

License as published by the Free Software Foundation; either

[5] Fix | Delete

version 2.1 of the License, or (at your option) any later version.

[6] Fix | Delete

[7] Fix | Delete

The GNU C Library is distributed in the hope that it will be useful,

[8] Fix | Delete

but WITHOUT ANY WARRANTY; without even the implied warranty of

[9] Fix | Delete

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

[10] Fix | Delete

Lesser General Public License for more details.

[11] Fix | Delete

[12] Fix | Delete

You should have received a copy of the GNU Lesser General Public

[13] Fix | Delete

License along with the GNU C Library; if not, see

[14] Fix | Delete

<http://www.gnu.org/licenses/>. */

[15] Fix | Delete

[16] Fix | Delete

#ifndef _NETINET_IP6_H

[17] Fix | Delete

#define _NETINET_IP6_H 1

[18] Fix | Delete

[19] Fix | Delete

#include <inttypes.h>

[20] Fix | Delete

#include <netinet/in.h>

[21] Fix | Delete

[22] Fix | Delete

struct ip6_hdr

[23] Fix | Delete

{

[24] Fix | Delete

union

[25] Fix | Delete

{

[26] Fix | Delete

struct ip6_hdrctl

[27] Fix | Delete

{

[28] Fix | Delete

uint32_t ip6_un1_flow; /* 4 bits version, 8 bits TC,

[29] Fix | Delete

20 bits flow-ID */

[30] Fix | Delete

uint16_t ip6_un1_plen; /* payload length */

[31] Fix | Delete

uint8_t ip6_un1_nxt; /* next header */

[32] Fix | Delete

uint8_t ip6_un1_hlim; /* hop limit */

[33] Fix | Delete

} ip6_un1;

[34] Fix | Delete

uint8_t ip6_un2_vfc; /* 4 bits version, top 4 bits tclass */

[35] Fix | Delete

} ip6_ctlun;

[36] Fix | Delete

struct in6_addr ip6_src; /* source address */

[37] Fix | Delete

struct in6_addr ip6_dst; /* destination address */

[38] Fix | Delete

};

[39] Fix | Delete

[40] Fix | Delete

#define ip6_vfc ip6_ctlun.ip6_un2_vfc

[41] Fix | Delete

#define ip6_flow ip6_ctlun.ip6_un1.ip6_un1_flow

[42] Fix | Delete

#define ip6_plen ip6_ctlun.ip6_un1.ip6_un1_plen

[43] Fix | Delete

#define ip6_nxt ip6_ctlun.ip6_un1.ip6_un1_nxt

[44] Fix | Delete

#define ip6_hlim ip6_ctlun.ip6_un1.ip6_un1_hlim

[45] Fix | Delete

#define ip6_hops ip6_ctlun.ip6_un1.ip6_un1_hlim

[46] Fix | Delete

[47] Fix | Delete

/* Generic extension header. */

[48] Fix | Delete

struct ip6_ext

[49] Fix | Delete

{

[50] Fix | Delete

uint8_t ip6e_nxt; /* next header. */

[51] Fix | Delete

uint8_t ip6e_len; /* length in units of 8 octets. */

[52] Fix | Delete

};

[53] Fix | Delete

[54] Fix | Delete

/* Hop-by-Hop options header. */

[55] Fix | Delete

struct ip6_hbh

[56] Fix | Delete

{

[57] Fix | Delete

uint8_t ip6h_nxt; /* next header. */

[58] Fix | Delete

uint8_t ip6h_len; /* length in units of 8 octets. */

[59] Fix | Delete

/* followed by options */

[60] Fix | Delete

};

[61] Fix | Delete

[62] Fix | Delete

/* Destination options header */

[63] Fix | Delete

struct ip6_dest

[64] Fix | Delete

{

[65] Fix | Delete

uint8_t ip6d_nxt; /* next header */

[66] Fix | Delete

uint8_t ip6d_len; /* length in units of 8 octets */

[67] Fix | Delete

/* followed by options */

[68] Fix | Delete

};

[69] Fix | Delete

[70] Fix | Delete

/* Routing header */

[71] Fix | Delete

struct ip6_rthdr

[72] Fix | Delete

{

[73] Fix | Delete

uint8_t ip6r_nxt; /* next header */

[74] Fix | Delete

uint8_t ip6r_len; /* length in units of 8 octets */

[75] Fix | Delete

uint8_t ip6r_type; /* routing type */

[76] Fix | Delete

uint8_t ip6r_segleft; /* segments left */

[77] Fix | Delete

/* followed by routing type specific data */

[78] Fix | Delete

};

[79] Fix | Delete

[80] Fix | Delete

/* Type 0 Routing header */

[81] Fix | Delete

struct ip6_rthdr0

[82] Fix | Delete

{

[83] Fix | Delete

uint8_t ip6r0_nxt; /* next header */

[84] Fix | Delete

uint8_t ip6r0_len; /* length in units of 8 octets */

[85] Fix | Delete

uint8_t ip6r0_type; /* always zero */

[86] Fix | Delete

uint8_t ip6r0_segleft; /* segments left */

[87] Fix | Delete

uint8_t ip6r0_reserved; /* reserved field */

[88] Fix | Delete

uint8_t ip6r0_slmap[3]; /* strict/loose bit map */

[89] Fix | Delete

/* followed by up to 127 struct in6_addr */

[90] Fix | Delete

struct in6_addr ip6r0_addr[0];

[91] Fix | Delete

};

[92] Fix | Delete

[93] Fix | Delete

/* Fragment header */

[94] Fix | Delete

struct ip6_frag

[95] Fix | Delete

{

[96] Fix | Delete

uint8_t ip6f_nxt; /* next header */

[97] Fix | Delete

uint8_t ip6f_reserved; /* reserved field */

[98] Fix | Delete

uint16_t ip6f_offlg; /* offset, reserved, and flag */

[99] Fix | Delete

uint32_t ip6f_ident; /* identification */

[100] Fix | Delete

};

[101] Fix | Delete

[102] Fix | Delete

#if __BYTE_ORDER == __BIG_ENDIAN

[103] Fix | Delete

# define IP6F_OFF_MASK 0xfff8 /* mask out offset from _offlg */

[104] Fix | Delete

# define IP6F_RESERVED_MASK 0x0006 /* reserved bits in ip6f_offlg */

[105] Fix | Delete

# define IP6F_MORE_FRAG 0x0001 /* more-fragments flag */

[106] Fix | Delete

#else /* __BYTE_ORDER == __LITTLE_ENDIAN */

[107] Fix | Delete

# define IP6F_OFF_MASK 0xf8ff /* mask out offset from _offlg */

[108] Fix | Delete

# define IP6F_RESERVED_MASK 0x0600 /* reserved bits in ip6f_offlg */

[109] Fix | Delete

# define IP6F_MORE_FRAG 0x0100 /* more-fragments flag */

[110] Fix | Delete

#endif

[111] Fix | Delete

[112] Fix | Delete

/* IPv6 options */

[113] Fix | Delete

struct ip6_opt

[114] Fix | Delete

{

[115] Fix | Delete

uint8_t ip6o_type;

[116] Fix | Delete

uint8_t ip6o_len;

[117] Fix | Delete

};

[118] Fix | Delete

[119] Fix | Delete

/* The high-order 3 bits of the option type define the behavior

[120] Fix | Delete

* when processing an unknown option and whether or not the option

[121] Fix | Delete

* content changes in flight.

[122] Fix | Delete

*/

[123] Fix | Delete

#define IP6OPT_TYPE(o) ((o) & 0xc0)

[124] Fix | Delete

#define IP6OPT_TYPE_SKIP 0x00

[125] Fix | Delete

#define IP6OPT_TYPE_DISCARD 0x40

[126] Fix | Delete

#define IP6OPT_TYPE_FORCEICMP 0x80

[127] Fix | Delete

#define IP6OPT_TYPE_ICMP 0xc0

[128] Fix | Delete

#define IP6OPT_TYPE_MUTABLE 0x20

[129] Fix | Delete

[130] Fix | Delete

/* Special option types for padding. */

[131] Fix | Delete

#define IP6OPT_PAD1 0

[132] Fix | Delete

#define IP6OPT_PADN 1

[133] Fix | Delete

[134] Fix | Delete

#define IP6OPT_JUMBO 0xc2

[135] Fix | Delete

#define IP6OPT_NSAP_ADDR 0xc3

[136] Fix | Delete

#define IP6OPT_TUNNEL_LIMIT 0x04

[137] Fix | Delete

#define IP6OPT_ROUTER_ALERT 0x05

[138] Fix | Delete

[139] Fix | Delete

/* Jumbo Payload Option */

[140] Fix | Delete

struct ip6_opt_jumbo

[141] Fix | Delete

{

[142] Fix | Delete

uint8_t ip6oj_type;

[143] Fix | Delete

uint8_t ip6oj_len;

[144] Fix | Delete

uint8_t ip6oj_jumbo_len[4];

[145] Fix | Delete

};

[146] Fix | Delete

#define IP6OPT_JUMBO_LEN 6

[147] Fix | Delete

[148] Fix | Delete

/* NSAP Address Option */

[149] Fix | Delete

struct ip6_opt_nsap

[150] Fix | Delete

{

[151] Fix | Delete

uint8_t ip6on_type;

[152] Fix | Delete

uint8_t ip6on_len;

[153] Fix | Delete

uint8_t ip6on_src_nsap_len;

[154] Fix | Delete

uint8_t ip6on_dst_nsap_len;

[155] Fix | Delete

/* followed by source NSAP */

[156] Fix | Delete

/* followed by destination NSAP */

[157] Fix | Delete

};

[158] Fix | Delete

[159] Fix | Delete

/* Tunnel Limit Option */

[160] Fix | Delete

struct ip6_opt_tunnel

[161] Fix | Delete

{

[162] Fix | Delete

uint8_t ip6ot_type;

[163] Fix | Delete

uint8_t ip6ot_len;

[164] Fix | Delete

uint8_t ip6ot_encap_limit;

[165] Fix | Delete

};

[166] Fix | Delete

[167] Fix | Delete

/* Router Alert Option */

[168] Fix | Delete

struct ip6_opt_router

[169] Fix | Delete

{

[170] Fix | Delete

uint8_t ip6or_type;

[171] Fix | Delete

uint8_t ip6or_len;

[172] Fix | Delete

uint8_t ip6or_value[2];

[173] Fix | Delete

};

[174] Fix | Delete

[175] Fix | Delete

/* Router alert values (in network byte order) */

[176] Fix | Delete

#if __BYTE_ORDER == __BIG_ENDIAN

[177] Fix | Delete

# define IP6_ALERT_MLD 0x0000

[178] Fix | Delete

# define IP6_ALERT_RSVP 0x0001

[179] Fix | Delete

# define IP6_ALERT_AN 0x0002

[180] Fix | Delete

#else /* __BYTE_ORDER == __LITTLE_ENDIAN */

[181] Fix | Delete

# define IP6_ALERT_MLD 0x0000

[182] Fix | Delete

# define IP6_ALERT_RSVP 0x0100

[183] Fix | Delete

# define IP6_ALERT_AN 0x0200

[184] Fix | Delete

#endif

[185] Fix | Delete

[186] Fix | Delete

#endif /* netinet/ip6.h */

[187] Fix | Delete

[188] Fix | Delete