[mirror_frr.git] / ospf6d / ospf6_proto.h

/*
 * Common protocol data and data structures.
 * Copyright (C) 2003 Yasuhiro Ohara
 *
 * This file is part of GNU Zebra.
 *
 * GNU Zebra is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the
 * Free Software Foundation; either version 2, or (at your option) any
 * later version.
 *
 * GNU Zebra is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; see the file COPYING; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
 */

#ifndef OSPF6_PROTO_H
#define OSPF6_PROTO_H

/* OSPF protocol version */
#define OSPFV3_VERSION           3

/* TOS field normaly null */
#define DEFAULT_TOS_VALUE      0x0

#define ALLSPFROUTERS6 "ff02::5"
#define ALLDROUTERS6   "ff02::6"

#define OSPF6_ROUTER_BIT_W     (1 << 3)
#define OSPF6_ROUTER_BIT_V     (1 << 2)
#define OSPF6_ROUTER_BIT_E     (1 << 1)
#define OSPF6_ROUTER_BIT_B     (1 << 0)

/* OSPF options */
/* present in HELLO, DD, LSA */
#define OSPF6_OPT_SET(x,opt)   ((x)[2] |=  (opt))
#define OSPF6_OPT_ISSET(x,opt) ((x)[2] &   (opt))
#define OSPF6_OPT_CLEAR(x,opt) ((x)[2] &= ~(opt))
#define OSPF6_OPT_CLEAR_ALL(x) ((x)[0] = (x)[1] = (x)[2] = 0)

#define OSPF6_OPT_DC (1 << 5)   /* Demand Circuit handling Capability */
#define OSPF6_OPT_R  (1 << 4)   /* Forwarding Capability (Any Protocol) */
#define OSPF6_OPT_N  (1 << 3)   /* Handling Type-7 LSA Capability */
#define OSPF6_OPT_MC (1 << 2)   /* Multicasting Capability */
#define OSPF6_OPT_E  (1 << 1)   /* AS External Capability */
#define OSPF6_OPT_V6 (1 << 0)   /* IPv6 forwarding Capability */

/* OSPF6 Prefix */
#define OSPF6_PREFIX_MIN_SIZE                  4U /* .length == 0 */
struct ospf6_prefix {
	u_int8_t prefix_length;
	u_int8_t prefix_options;
	union {
		u_int16_t _prefix_metric;
		u_int16_t _prefix_referenced_lstype;
	} u;
#define prefix_metric        u._prefix_metric
#define prefix_refer_lstype  u._prefix_referenced_lstype
	/* followed by one address_prefix */
};

#define OSPF6_PREFIX_OPTION_NU (1 << 0)  /* No Unicast */
#define OSPF6_PREFIX_OPTION_LA (1 << 1)  /* Local Address */
#define OSPF6_PREFIX_OPTION_MC (1 << 2)  /* MultiCast */
#define OSPF6_PREFIX_OPTION_P  (1 << 3)  /* Propagate (NSSA) */

/* caddr_t OSPF6_PREFIX_BODY (struct ospf6_prefix *); */
#define OSPF6_PREFIX_BODY(x) ((caddr_t)(x) + sizeof (struct ospf6_prefix))

/* size_t OSPF6_PREFIX_SPACE (int prefixlength); */
#define OSPF6_PREFIX_SPACE(x) ((((x) + 31) / 32) * 4)

/* size_t OSPF6_PREFIX_SIZE (struct ospf6_prefix *); */
#define OSPF6_PREFIX_SIZE(x)                                                   \
	(OSPF6_PREFIX_SPACE((x)->prefix_length) + sizeof(struct ospf6_prefix))

/* struct ospf6_prefix *OSPF6_PREFIX_NEXT (struct ospf6_prefix *); */
#define OSPF6_PREFIX_NEXT(x)                                                   \
	((struct ospf6_prefix *)((caddr_t)(x) + OSPF6_PREFIX_SIZE(x)))

#define ospf6_prefix_in6_addr(in6, op)                                         \
	do {                                                                   \
		memset(in6, 0, sizeof(struct in6_addr));                       \
		memcpy(in6, (caddr_t)(op) + sizeof(struct ospf6_prefix),       \
		       OSPF6_PREFIX_SPACE((op)->prefix_length));               \
	} while (0)

extern void ospf6_prefix_apply_mask(struct ospf6_prefix *op);
extern void ospf6_prefix_options_printbuf(u_int8_t prefix_options, char *buf,
					  int size);
extern void ospf6_capability_printbuf(char capability, char *buf, int size);
extern void ospf6_options_printbuf(u_char *options, char *buf, int size);

#endif /* OSPF6_PROTO_H */
Commit	Line	Data
718e3744	1	/*
049207c3	2	* Common protocol data and data structures.
508e53e2	3	* Copyright (C) 2003 Yasuhiro Ohara
718e3744	4	*
	5	* This file is part of GNU Zebra.
	6	*
	7	* GNU Zebra is free software; you can redistribute it and/or modify it
	8	* under the terms of the GNU General Public License as published by the
	9	* Free Software Foundation; either version 2, or (at your option) any
	10	* later version.
	11	*
	12	* GNU Zebra is distributed in the hope that it will be useful, but
	13	* WITHOUT ANY WARRANTY; without even the implied warranty of
	14	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	15	* General Public License for more details.
	16	*
896014f4 DL	17	* You should have received a copy of the GNU General Public License along
	18	* with this program; see the file COPYING; if not, write to the Free Software
	19	* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
718e3744	20	*/
	21
	22	#ifndef OSPF6_PROTO_H
	23	#define OSPF6_PROTO_H
	24
	25	/* OSPF protocol version */
508e53e2	26	#define OSPFV3_VERSION 3
718e3744	27
718e3744	28	/* TOS field normaly null */
508e53e2	29	#define DEFAULT_TOS_VALUE 0x0
718e3744	30
718e3744	31	#define ALLSPFROUTERS6 "ff02::5"
	32	#define ALLDROUTERS6 "ff02::6"
	33
508e53e2	34	#define OSPF6_ROUTER_BIT_W (1 << 3)
	35	#define OSPF6_ROUTER_BIT_V (1 << 2)
	36	#define OSPF6_ROUTER_BIT_E (1 << 1)
	37	#define OSPF6_ROUTER_BIT_B (1 << 0)
718e3744	38
	39	/* OSPF options */
	40	/* present in HELLO, DD, LSA */
	41	#define OSPF6_OPT_SET(x,opt) ((x)[2] \|= (opt))
	42	#define OSPF6_OPT_ISSET(x,opt) ((x)[2] & (opt))
	43	#define OSPF6_OPT_CLEAR(x,opt) ((x)[2] &= ~(opt))
	44	#define OSPF6_OPT_CLEAR_ALL(x) ((x)[0] = (x)[1] = (x)[2] = 0)
	45
718e3744	46	#define OSPF6_OPT_DC (1 << 5) /* Demand Circuit handling Capability */
508e53e2	47	#define OSPF6_OPT_R (1 << 4) /* Forwarding Capability (Any Protocol) */
	48	#define OSPF6_OPT_N (1 << 3) /* Handling Type-7 LSA Capability */
	49	#define OSPF6_OPT_MC (1 << 2) /* Multicasting Capability */
	50	#define OSPF6_OPT_E (1 << 1) /* AS External Capability */
	51	#define OSPF6_OPT_V6 (1 << 0) /* IPv6 forwarding Capability */
	52
	53	/* OSPF6 Prefix */
abc7ef44	54	#define OSPF6_PREFIX_MIN_SIZE 4U /* .length == 0 */
d62a17ae	55	struct ospf6_prefix {
	56	u_int8_t prefix_length;
	57	u_int8_t prefix_options;
	58	union {
	59	u_int16_t _prefix_metric;
	60	u_int16_t _prefix_referenced_lstype;
	61	} u;
508e53e2	62	#define prefix_metric u._prefix_metric
508e53e2	63	#define prefix_refer_lstype u._prefix_referenced_lstype
d62a17ae	64	/* followed by one address_prefix */
508e53e2	65	};
	66
	67	#define OSPF6_PREFIX_OPTION_NU (1 << 0) /* No Unicast */
	68	#define OSPF6_PREFIX_OPTION_LA (1 << 1) /* Local Address */
	69	#define OSPF6_PREFIX_OPTION_MC (1 << 2) /* MultiCast */
	70	#define OSPF6_PREFIX_OPTION_P (1 << 3) /* Propagate (NSSA) */
	71
	72	/* caddr_t OSPF6_PREFIX_BODY (struct ospf6_prefix ); /
	73	#define OSPF6_PREFIX_BODY(x) ((caddr_t)(x) + sizeof (struct ospf6_prefix))
	74
	75	/* size_t OSPF6_PREFIX_SPACE (int prefixlength); */
	76	#define OSPF6_PREFIX_SPACE(x) ((((x) + 31) / 32) * 4)
	77
	78	/* size_t OSPF6_PREFIX_SIZE (struct ospf6_prefix ); /
d62a17ae	79	#define OSPF6_PREFIX_SIZE(x) \
d62a17ae	80	(OSPF6_PREFIX_SPACE((x)->prefix_length) + sizeof(struct ospf6_prefix))
508e53e2	81
508e53e2	82	/* struct ospf6_prefix OSPF6_PREFIX_NEXT (struct ospf6_prefix ); */
d62a17ae	83	#define OSPF6_PREFIX_NEXT(x) \
	84	((struct ospf6_prefix *)((caddr_t)(x) + OSPF6_PREFIX_SIZE(x)))
	85
	86	#define ospf6_prefix_in6_addr(in6, op) \
	87	do { \
	88	memset(in6, 0, sizeof(struct in6_addr)); \
	89	memcpy(in6, (caddr_t)(op) + sizeof(struct ospf6_prefix), \
	90	OSPF6_PREFIX_SPACE((op)->prefix_length)); \
	91	} while (0)
	92
	93	extern void ospf6_prefix_apply_mask(struct ospf6_prefix *op);
	94	extern void ospf6_prefix_options_printbuf(u_int8_t prefix_options, char *buf,
	95	int size);
	96	extern void ospf6_capability_printbuf(char capability, char *buf, int size);
	97	extern void ospf6_options_printbuf(u_char options, char buf, int size);
718e3744	98
718e3744	99	#endif /* OSPF6_PROTO_H */