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acddc0ed | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
718e3744 | 2 | /* |
049207c3 | 3 | * Common protocol data and data structures. |
508e53e2 | 4 | * Copyright (C) 2003 Yasuhiro Ohara |
718e3744 | 5 | */ |
6 | ||
7 | #ifndef OSPF6_PROTO_H | |
8 | #define OSPF6_PROTO_H | |
9 | ||
10 | /* OSPF protocol version */ | |
508e53e2 | 11 | #define OSPFV3_VERSION 3 |
718e3744 | 12 | |
718e3744 | 13 | /* TOS field normaly null */ |
508e53e2 | 14 | #define DEFAULT_TOS_VALUE 0x0 |
718e3744 | 15 | |
718e3744 | 16 | #define ALLSPFROUTERS6 "ff02::5" |
17 | #define ALLDROUTERS6 "ff02::6" | |
18 | ||
508e53e2 | 19 | #define OSPF6_ROUTER_BIT_W (1 << 3) |
20 | #define OSPF6_ROUTER_BIT_V (1 << 2) | |
21 | #define OSPF6_ROUTER_BIT_E (1 << 1) | |
22 | #define OSPF6_ROUTER_BIT_B (1 << 0) | |
ad500b22 K |
23 | #define OSPF6_ROUTER_BIT_NT (1 << 4) |
24 | ||
718e3744 | 25 | |
26 | /* OSPF options */ | |
27 | /* present in HELLO, DD, LSA */ | |
6cb85350 AR |
28 | #define OSPF6_OPT_SET(x, opt) ((x)[2] |= (opt)) |
29 | #define OSPF6_OPT_ISSET(x, opt) ((x)[2] & (opt)) | |
30 | #define OSPF6_OPT_CLEAR(x, opt) ((x)[2] &= ~(opt)) | |
31 | #define OSPF6_OPT_SET_EXT(x, opt) ((x)[1] |= (opt)) | |
32 | #define OSPF6_OPT_ISSET_EXT(x, opt) ((x)[1] & (opt)) | |
33 | #define OSPF6_OPT_CLEAR_EXT(x, opt) ((x)[1] &= ~(opt)) | |
718e3744 | 34 | #define OSPF6_OPT_CLEAR_ALL(x) ((x)[0] = (x)[1] = (x)[2] = 0) |
35 | ||
6cb85350 AR |
36 | #define OSPF6_OPT_AT (1 << 2) /* Authentication trailer Capability */ |
37 | #define OSPF6_OPT_L (1 << 1) /* Link local signalling Capability */ | |
38 | #define OSPF6_OPT_AF (1 << 0) /* Address family Capability */ | |
39 | /* 2 bits reserved for OSPFv2 migrated options */ | |
718e3744 | 40 | #define OSPF6_OPT_DC (1 << 5) /* Demand Circuit handling Capability */ |
6cb85350 | 41 | #define OSPF6_OPT_R (1 << 4) /* Forwarding Capability (Any Protocol) */ |
508e53e2 | 42 | #define OSPF6_OPT_N (1 << 3) /* Handling Type-7 LSA Capability */ |
43 | #define OSPF6_OPT_MC (1 << 2) /* Multicasting Capability */ | |
44 | #define OSPF6_OPT_E (1 << 1) /* AS External Capability */ | |
45 | #define OSPF6_OPT_V6 (1 << 0) /* IPv6 forwarding Capability */ | |
46 | ||
47 | /* OSPF6 Prefix */ | |
abc7ef44 | 48 | #define OSPF6_PREFIX_MIN_SIZE 4U /* .length == 0 */ |
d62a17ae | 49 | struct ospf6_prefix { |
d7c0a89a QY |
50 | uint8_t prefix_length; |
51 | uint8_t prefix_options; | |
d62a17ae | 52 | union { |
d7c0a89a QY |
53 | uint16_t _prefix_metric; |
54 | uint16_t _prefix_referenced_lstype; | |
d62a17ae | 55 | } u; |
508e53e2 | 56 | #define prefix_metric u._prefix_metric |
57 | #define prefix_refer_lstype u._prefix_referenced_lstype | |
d62a17ae | 58 | /* followed by one address_prefix */ |
c0f76ddf | 59 | struct in6_addr addr[]; |
508e53e2 | 60 | }; |
61 | ||
62 | #define OSPF6_PREFIX_OPTION_NU (1 << 0) /* No Unicast */ | |
63 | #define OSPF6_PREFIX_OPTION_LA (1 << 1) /* Local Address */ | |
64 | #define OSPF6_PREFIX_OPTION_MC (1 << 2) /* MultiCast */ | |
65 | #define OSPF6_PREFIX_OPTION_P (1 << 3) /* Propagate (NSSA) */ | |
600d28e3 | 66 | #define OSPF6_PREFIX_OPTION_DN \ |
67 | (1 << 4) /* DN bit to prevent loops in VPN environment */ | |
508e53e2 | 68 | |
69 | /* caddr_t OSPF6_PREFIX_BODY (struct ospf6_prefix *); */ | |
0d6f7fd6 | 70 | #define OSPF6_PREFIX_BODY(x) ((caddr_t)(x) + sizeof(struct ospf6_prefix)) |
508e53e2 | 71 | |
72 | /* size_t OSPF6_PREFIX_SPACE (int prefixlength); */ | |
73 | #define OSPF6_PREFIX_SPACE(x) ((((x) + 31) / 32) * 4) | |
74 | ||
75 | /* size_t OSPF6_PREFIX_SIZE (struct ospf6_prefix *); */ | |
d62a17ae | 76 | #define OSPF6_PREFIX_SIZE(x) \ |
77 | (OSPF6_PREFIX_SPACE((x)->prefix_length) + sizeof(struct ospf6_prefix)) | |
508e53e2 | 78 | |
79 | /* struct ospf6_prefix *OSPF6_PREFIX_NEXT (struct ospf6_prefix *); */ | |
d62a17ae | 80 | #define OSPF6_PREFIX_NEXT(x) \ |
81 | ((struct ospf6_prefix *)((caddr_t)(x) + OSPF6_PREFIX_SIZE(x))) | |
82 | ||
b8ce0c36 | 83 | extern void ospf6_prefix_in6_addr(struct in6_addr *in6, const void *prefix_buf, |
84 | const struct ospf6_prefix *p); | |
d62a17ae | 85 | extern void ospf6_prefix_apply_mask(struct ospf6_prefix *op); |
d7c0a89a | 86 | extern void ospf6_prefix_options_printbuf(uint8_t prefix_options, char *buf, |
d62a17ae | 87 | int size); |
88 | extern void ospf6_capability_printbuf(char capability, char *buf, int size); | |
d7c0a89a | 89 | extern void ospf6_options_printbuf(uint8_t *options, char *buf, int size); |
718e3744 | 90 | |
91 | #endif /* OSPF6_PROTO_H */ |