1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * Common protocol data and data structures.
4 * Copyright (C) 2003 Yasuhiro Ohara
10 /* OSPF protocol version */
11 #define OSPFV3_VERSION 3
13 /* TOS field normaly null */
14 #define DEFAULT_TOS_VALUE 0x0
16 #define ALLSPFROUTERS6 "ff02::5"
17 #define ALLDROUTERS6 "ff02::6"
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)
23 #define OSPF6_ROUTER_BIT_NT (1 << 4)
27 /* present in HELLO, DD, LSA */
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))
34 #define OSPF6_OPT_CLEAR_ALL(x) ((x)[0] = (x)[1] = (x)[2] = 0)
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 */
40 #define OSPF6_OPT_DC (1 << 5) /* Demand Circuit handling Capability */
41 #define OSPF6_OPT_R (1 << 4) /* Forwarding Capability (Any Protocol) */
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 */
48 #define OSPF6_PREFIX_MIN_SIZE 4U /* .length == 0 */
50 uint8_t prefix_length
;
51 uint8_t prefix_options
;
53 uint16_t _prefix_metric
;
54 uint16_t _prefix_referenced_lstype
;
56 #define prefix_metric u._prefix_metric
57 #define prefix_refer_lstype u._prefix_referenced_lstype
58 /* followed by one address_prefix */
59 struct in6_addr addr
[];
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) */
66 #define OSPF6_PREFIX_OPTION_DN \
67 (1 << 4) /* DN bit to prevent loops in VPN environment */
69 /* caddr_t OSPF6_PREFIX_BODY (struct ospf6_prefix *); */
70 #define OSPF6_PREFIX_BODY(x) ((caddr_t)(x) + sizeof(struct ospf6_prefix))
72 /* size_t OSPF6_PREFIX_SPACE (int prefixlength); */
73 #define OSPF6_PREFIX_SPACE(x) ((((x) + 31) / 32) * 4)
75 /* size_t OSPF6_PREFIX_SIZE (struct ospf6_prefix *); */
76 #define OSPF6_PREFIX_SIZE(x) \
77 (OSPF6_PREFIX_SPACE((x)->prefix_length) + sizeof(struct ospf6_prefix))
79 /* struct ospf6_prefix *OSPF6_PREFIX_NEXT (struct ospf6_prefix *); */
80 #define OSPF6_PREFIX_NEXT(x) \
81 ((struct ospf6_prefix *)((caddr_t)(x) + OSPF6_PREFIX_SIZE(x)))
83 extern void ospf6_prefix_in6_addr(struct in6_addr
*in6
, const void *prefix_buf
,
84 const struct ospf6_prefix
*p
);
85 extern void ospf6_prefix_apply_mask(struct ospf6_prefix
*op
);
86 extern void ospf6_prefix_options_printbuf(uint8_t prefix_options
, char *buf
,
88 extern void ospf6_capability_printbuf(char capability
, char *buf
, int size
);
89 extern void ospf6_options_printbuf(uint8_t *options
, char *buf
, int size
);
91 #endif /* OSPF6_PROTO_H */