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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (C) 1999-2003 Yasuhiro Ohara
*/
#ifndef OSPF6_MESSAGE_H
#define OSPF6_MESSAGE_H
#define OSPF6_MESSAGE_BUFSIZ 4096
/* Debug option */
extern unsigned char conf_debug_ospf6_message[];
#define OSPF6_ACTION_SEND 0x01
#define OSPF6_ACTION_RECV 0x02
#define OSPF6_DEBUG_MESSAGE_SEND 0x01
#define OSPF6_DEBUG_MESSAGE_RECV 0x02
#define OSPF6_DEBUG_MESSAGE_SEND_HDR 0x04
#define OSPF6_DEBUG_MESSAGE_RECV_HDR 0x08
#define OSPF6_DEBUG_MESSAGE_SEND_BOTH \
OSPF6_DEBUG_MESSAGE_SEND | OSPF6_DEBUG_MESSAGE_SEND_HDR
#define OSPF6_DEBUG_MESSAGE_RECV_BOTH \
OSPF6_DEBUG_MESSAGE_RECV | OSPF6_DEBUG_MESSAGE_RECV_HDR
#define OSPF6_DEBUG_MESSAGE_ON(type, level) \
(conf_debug_ospf6_message[type] |= (level))
#define OSPF6_DEBUG_MESSAGE_OFF(type, level) \
(conf_debug_ospf6_message[type] &= ~(level))
#define IS_OSPF6_DEBUG_MESSAGE(t, e) \
(((OSPF6_DEBUG_MESSAGE_##e) == OSPF6_DEBUG_MESSAGE_RECV_HDR) \
? (conf_debug_ospf6_message[t] \
& (OSPF6_DEBUG_MESSAGE_RECV_BOTH)) \
: (((OSPF6_DEBUG_MESSAGE_##e) == OSPF6_DEBUG_MESSAGE_SEND_HDR) \
? (conf_debug_ospf6_message[t] \
& (OSPF6_DEBUG_MESSAGE_SEND_BOTH)) \
: (conf_debug_ospf6_message[t] \
& (OSPF6_DEBUG_MESSAGE_##e))))
#define IS_OSPF6_DEBUG_MESSAGE_ENABLED(type, e) \
(conf_debug_ospf6_message[type] & (OSPF6_DEBUG_MESSAGE_##e))
/* Type */
#define OSPF6_MESSAGE_TYPE_UNKNOWN 0x0
#define OSPF6_MESSAGE_TYPE_HELLO 0x1 /* Discover/maintain neighbors */
#define OSPF6_MESSAGE_TYPE_DBDESC 0x2 /* Summarize database contents */
#define OSPF6_MESSAGE_TYPE_LSREQ 0x3 /* Database download request */
#define OSPF6_MESSAGE_TYPE_LSUPDATE 0x4 /* Database update */
#define OSPF6_MESSAGE_TYPE_LSACK 0x5 /* Flooding acknowledgment */
#define OSPF6_MESSAGE_TYPE_ALL 0x6 /* For debug option */
#define OSPF6_MESSAGE_TYPE_MAX 0x6 /* same as OSPF6_MESSAGE_TYPE_ALL */
struct ospf6_interface;
struct ospf6_packet {
struct ospf6_packet *next;
/* Pointer to data stream. */
struct stream *s;
/* IP destination address. */
struct in6_addr dst;
/* OSPF6 packet length. */
uint16_t length;
};
/* OSPF packet queue structure. */
struct ospf6_fifo {
unsigned long count;
struct ospf6_packet *head;
struct ospf6_packet *tail;
};
/* OSPFv3 packet header */
#define OSPF6_HEADER_SIZE 16U
struct ospf6_header {
uint8_t version;
uint8_t type;
uint16_t length;
in_addr_t router_id;
in_addr_t area_id;
uint16_t checksum;
uint8_t instance_id;
uint8_t reserved;
};
#define OSPF6_MESSAGE_END(H) ((caddr_t) (H) + ntohs ((H)->length))
/* Hello */
#define OSPF6_HELLO_MIN_SIZE 20U
struct ospf6_hello {
ifindex_t interface_id;
uint8_t priority;
uint8_t options[3];
uint16_t hello_interval;
uint16_t dead_interval;
in_addr_t drouter;
in_addr_t bdrouter;
/* Followed by Router-IDs */
};
/* Database Description */
#define OSPF6_DB_DESC_MIN_SIZE 12U
struct ospf6_dbdesc {
uint8_t reserved1;
uint8_t options[3];
uint16_t ifmtu;
uint8_t reserved2;
uint8_t bits;
uint32_t seqnum;
/* Followed by LSA Headers */
};
#define OSPF6_DBDESC_MSBIT (0x01) /* master/slave bit */
#define OSPF6_DBDESC_MBIT (0x02) /* more bit */
#define OSPF6_DBDESC_IBIT (0x04) /* initial bit */
/* Link State Request */
#define OSPF6_LS_REQ_MIN_SIZE 0U
/* It is just a sequence of entries below */
#define OSPF6_LSREQ_LSDESC_FIX_SIZE 12U
struct ospf6_lsreq_entry {
uint16_t reserved; /* Must Be Zero */
uint16_t type; /* LS type */
in_addr_t id; /* Link State ID */
in_addr_t adv_router; /* Advertising Router */
};
/* Link State Update */
#define OSPF6_LS_UPD_MIN_SIZE 4U
struct ospf6_lsupdate {
uint32_t lsa_number;
/* Followed by LSAs */
};
/* LLS is not supported, but used to derive
* offset of Auth_trailer
*/
struct ospf6_lls_hdr {
uint16_t checksum;
uint16_t length;
};
/* Link State Acknowledgement */
#define OSPF6_LS_ACK_MIN_SIZE 0U
/* It is just a sequence of LSA Headers */
/* Function definition */
extern void ospf6_hello_print(struct ospf6_header *, int action);
extern void ospf6_dbdesc_print(struct ospf6_header *, int action);
extern void ospf6_lsreq_print(struct ospf6_header *, int action);
extern void ospf6_lsupdate_print(struct ospf6_header *, int action);
extern void ospf6_lsack_print(struct ospf6_header *, int action);
extern struct ospf6_fifo *ospf6_fifo_new(void);
extern void ospf6_fifo_flush(struct ospf6_fifo *fifo);
extern void ospf6_fifo_free(struct ospf6_fifo *fifo);
extern int ospf6_iobuf_size(unsigned int size);
extern void ospf6_message_terminate(void);
extern void ospf6_receive(struct event *thread);
extern void ospf6_hello_send(struct event *thread);
extern void ospf6_dbdesc_send(struct event *thread);
extern void ospf6_dbdesc_send_newone(struct event *thread);
extern void ospf6_lsreq_send(struct event *thread);
extern void ospf6_lsupdate_send_interface(struct event *thread);
extern void ospf6_lsupdate_send_neighbor(struct event *thread);
extern void ospf6_lsack_send_interface(struct event *thread);
extern void ospf6_lsack_send_neighbor(struct event *thread);
extern void ospf6_hello_send_addr(struct ospf6_interface *oi,
const struct in6_addr *addr);
extern int config_write_ospf6_debug_message(struct vty *);
extern void install_element_ospf6_debug_message(void);
extern const char *ospf6_message_type(int type);
#endif /* OSPF6_MESSAGE_H */
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