mirror of
https://gitlab.nic.cz/labs/bird.git
synced 2024-11-18 00:58:42 +00:00
136 lines
3.4 KiB
C
136 lines
3.4 KiB
C
/*
|
|
* BIRD -- OSPF
|
|
*
|
|
* (c) 1999 Ondrej Filip <feela@network.cz>
|
|
*
|
|
* Can be freely distributed and used under the terms of the GNU GPL.
|
|
*/
|
|
|
|
#ifndef _BIRD_OSPF_H_
|
|
#define _BIRD_OSPF_H_
|
|
|
|
#define OSPF_PROTO 89
|
|
#ifndef IPV6
|
|
#define OSPF_VERSION 2
|
|
#define OSPF_IP_PRI 0xc0
|
|
#define AllSPFRouters ipa_from_u32(0xe0000005) /* 224.0.0.5 */
|
|
#define AllDRouters ipa_from_u32(0xe0000006) /* 224.0.0.6 */
|
|
#else
|
|
#error Multicast address not defined in IPv6
|
|
#endif
|
|
|
|
struct proto_ospf {
|
|
struct proto proto;
|
|
list iface_list; /* Interfaces we really use */
|
|
};
|
|
|
|
struct ospf_config {
|
|
struct proto_config c;
|
|
u32 area; /* FIXME: Area ID !!! This is wrong !!!
|
|
* Should respect interface */
|
|
};
|
|
|
|
struct ospf_iface {
|
|
node n;
|
|
struct proto_ospf *proto;
|
|
struct iface *iface; /* Nest's iface */
|
|
sock *hello_sk; /* List of active sockets */
|
|
list neigh_list; /* List of neigbours */
|
|
u32 area; /* OSPF Area */
|
|
u16 cost; /* Cost of iface */
|
|
int rxmtint; /* number of seconds between LSA retransmissions */
|
|
int iftransdelay; /* The estimated number of seconds it takes to
|
|
transmit a Link State Update Packet over this
|
|
interface. LSAs contained in the update */
|
|
u8 priority; /* A router priority for DR election */
|
|
u16 helloint; /* number of seconds between hello sending */
|
|
u32 deadc; /* after "deadint" missing hellos is router dead */
|
|
u16 autype;
|
|
u8 aukey[8];
|
|
u8 options;
|
|
ip_addr drip; /* Designated router */
|
|
u32 drid;
|
|
ip_addr bdrip; /* Backup DR */
|
|
u32 bdrid;
|
|
int type; /* OSPF view of type */
|
|
#define OSPF_IT_BROADCAST 0
|
|
#define OSPF_IT_NBMA 1
|
|
#define OSPF_IT_PTP 2
|
|
int state; /* Interface state machine */
|
|
#define OSPF_IS_DOWN 0 /* Should never happen */
|
|
#define OSPF_IS_WAITING 1 /* Waiting for Wait timer */
|
|
#define OSPF_IS_PTP 2 /* PTP operational */
|
|
#define OSPF_IS_DROTHER 3 /* I'm on BCAST or NBMA and I'm not DR */
|
|
#define OSPF_IS_BACKUP 4 /* I'm BDR */
|
|
#define OSPF_IS_DR 5 /* I'm DR */
|
|
timer *wait_timer; /* WAIT timer */
|
|
timer *hello_timer; /* HELLOINT timer */
|
|
/* Default values for interface parameters */
|
|
#define COST_D 10
|
|
#define RXMTINT_D 5
|
|
#define IFTRANSDELAY_D 1
|
|
#define PRIORITY_D 1
|
|
#define HELLOINT_D 10
|
|
#define DEADC_D 4
|
|
#define WAIT_DMH 2 /* Value of Wait timer - not found it in RFC - using 2*HELLO */
|
|
};
|
|
|
|
struct ospf_patt {
|
|
struct iface_patt i;
|
|
|
|
u16 cost;
|
|
byte mode;
|
|
};
|
|
|
|
struct ospf_packet {
|
|
u8 version;
|
|
u8 type;
|
|
#define HELLO 1 /* Hello */
|
|
#define DBDES 2 /* Database description */
|
|
#define LSREQ 3 /* Link state request */
|
|
#define LSUPD 4 /* Link state update */
|
|
#define LSACK 5 /* Link state acknowledgement */
|
|
u16 length;
|
|
u32 routerid;
|
|
u32 areaid;
|
|
u16 checksum;
|
|
u16 autype;
|
|
u8 authetication[8];
|
|
};
|
|
|
|
struct ospf_hello_packet {
|
|
struct ospf_packet ospf_packet;
|
|
ip_addr netmask;
|
|
u16 helloint;
|
|
u8 options;
|
|
u8 priority;
|
|
u32 deadint;
|
|
u32 dr;
|
|
u32 bdr;
|
|
};
|
|
|
|
struct ospf_neighbor
|
|
{
|
|
struct ospf_iface *ifa;
|
|
int state;
|
|
#define NEIGHBOR_DOWN 0
|
|
#define NEIGHBOR_INIT 1
|
|
#define NEIGHBOR_2WAY 2
|
|
#define NEIGHBOR_ATTEMPT 3
|
|
#define NEIGHBOR_EXSTART 4
|
|
#define NEIGHBOR_EXCHANGE 5
|
|
#define NEIGHBOR_LOADING 6
|
|
#define NEIGHBOR_FULL 7
|
|
timer *inactim; /* Inactivity timer */
|
|
byte ms; /* Master/slave */
|
|
u32 dds; /* DD Sequence number being sentg */
|
|
u32 ddr; /* last Dat Des packet */
|
|
u32 rid; /* Router ID */
|
|
byte pri; /* Priority */
|
|
byte options; /* Options */
|
|
u32 dr; /* Neigbour's idea of DR */
|
|
u32 bdr; /* Neigbour's idea of BDR */
|
|
};
|
|
|
|
#endif /* _BIRD_OSPF_H_ */
|