53434e44a9
When device protocol goes down, interfaces should be flushed asynchronously (in the same way like routes from protocols are flushed), when protocol goes to DOWN/HUNGRY. This fixes the problem with static routes staying in kernel routing table after BIRD shutdown.
141 lines
4 KiB
C
141 lines
4 KiB
C
/*
|
|
* BIRD Internet Routing Daemon -- Network Interfaces
|
|
*
|
|
* (c) 1998--2000 Martin Mares <mj@ucw.cz>
|
|
*
|
|
* Can be freely distributed and used under the terms of the GNU GPL.
|
|
*/
|
|
|
|
#ifndef _BIRD_IFACE_H_
|
|
#define _BIRD_IFACE_H_
|
|
|
|
#include "lib/lists.h"
|
|
|
|
extern list iface_list;
|
|
|
|
struct proto;
|
|
struct pool;
|
|
|
|
struct ifa { /* Interface address */
|
|
node n;
|
|
struct iface *iface; /* Interface this address belongs to */
|
|
ip_addr ip; /* IP address of this host */
|
|
ip_addr prefix; /* Network prefix */
|
|
unsigned pxlen; /* Prefix length */
|
|
ip_addr brd; /* Broadcast address */
|
|
ip_addr opposite; /* Opposite end of a point-to-point link */
|
|
unsigned scope; /* Interface address scope */
|
|
unsigned flags; /* Analogous to iface->flags */
|
|
};
|
|
|
|
struct iface {
|
|
node n;
|
|
char name[16];
|
|
unsigned flags;
|
|
unsigned mtu;
|
|
unsigned index; /* OS-dependent interface index */
|
|
list addrs; /* Addresses assigned to this interface */
|
|
struct ifa *addr; /* Primary address */
|
|
list neighbors; /* All neighbors on this interface */
|
|
};
|
|
|
|
#define IF_UP 1 /* IF_LINK_UP and IP address known */
|
|
#define IF_MULTIACCESS 2
|
|
#define IF_BROADCAST 4
|
|
#define IF_MULTICAST 8
|
|
#define IF_ADMIN_DOWN 0x10
|
|
#define IF_LOOPBACK 0x20
|
|
#define IF_IGNORE 0x40 /* Not to be used by routing protocols (loopbacks etc.) */
|
|
#define IF_LINK_UP 0x80
|
|
|
|
#define IA_PRIMARY 0x10000 /* This address is primary */
|
|
#define IA_SECONDARY 0x20000 /* This address has been reported as secondary by the kernel */
|
|
#define IA_UNNUMBERED 0x40000 /* This address belongs to an unnumbered device */
|
|
#define IA_FLAGS 0xff0000
|
|
|
|
#define IF_JUST_CREATED 0x10000000 /* Send creation event as soon as possible */
|
|
#define IF_TMP_DOWN 0x20000000 /* Temporary shutdown due to interface reconfiguration */
|
|
#define IF_UPDATED 0x40000000 /* Touched in last scan */
|
|
|
|
/* Interface change events */
|
|
|
|
#define IF_CHANGE_UP 1
|
|
#define IF_CHANGE_DOWN 2
|
|
#define IF_CHANGE_MTU 4
|
|
#define IF_CHANGE_CREATE 8 /* Seen this interface for the first time */
|
|
#define IF_CHANGE_TOO_MUCH 0x40000000 /* Used internally */
|
|
|
|
void if_init(void);
|
|
void if_dump(struct iface *);
|
|
void if_dump_all(void);
|
|
void ifa_dump(struct ifa *);
|
|
void if_show(void);
|
|
void if_show_summary(void);
|
|
struct iface *if_update(struct iface *);
|
|
struct ifa *ifa_update(struct ifa *);
|
|
void ifa_delete(struct ifa *);
|
|
void if_start_update(void);
|
|
void if_end_partial_update(struct iface *);
|
|
void if_end_update(void);
|
|
void if_flush_ifaces(struct proto *p);
|
|
void if_feed_baby(struct proto *);
|
|
struct iface *if_find_by_index(unsigned);
|
|
struct iface *if_find_by_name(char *);
|
|
void ifa_recalc_all_primary_addresses(void);
|
|
|
|
/* The Neighbor Cache */
|
|
|
|
typedef struct neighbor {
|
|
node n; /* Node in global neighbor list */
|
|
node if_n; /* Node in per-interface neighbor list */
|
|
ip_addr addr; /* Address of the neighbor */
|
|
struct iface *iface; /* Interface it's connected to */
|
|
struct proto *proto; /* Protocol this belongs to */
|
|
void *data; /* Protocol-specific data */
|
|
unsigned aux; /* Protocol-specific data */
|
|
unsigned flags;
|
|
unsigned scope; /* Address scope, SCOPE_HOST when it's our own address */
|
|
} neighbor;
|
|
|
|
#define NEF_STICKY 1
|
|
#define NEF_ONLINK 2
|
|
|
|
neighbor *neigh_find(struct proto *, ip_addr *, unsigned flags);
|
|
neighbor *neigh_find2(struct proto *p, ip_addr *a, struct iface *ifa, unsigned flags);
|
|
|
|
static inline int neigh_connected_to(struct proto *p, ip_addr *a, struct iface *i)
|
|
{
|
|
neighbor *n = neigh_find(p, a, 0);
|
|
return n && n->iface == i;
|
|
}
|
|
|
|
void neigh_dump(neighbor *);
|
|
void neigh_dump_all(void);
|
|
void neigh_prune(void);
|
|
void neigh_if_up(struct iface *);
|
|
void neigh_if_down(struct iface *);
|
|
void neigh_init(struct pool *);
|
|
|
|
/*
|
|
* Interface Pattern Lists
|
|
*/
|
|
|
|
struct iface_patt_node {
|
|
node n;
|
|
int positive;
|
|
byte *pattern;
|
|
ip_addr prefix;
|
|
int pxlen;
|
|
};
|
|
|
|
struct iface_patt {
|
|
node n;
|
|
list ipn_list; /* A list of struct iface_patt_node */
|
|
|
|
/* Protocol-specific data follow after this structure */
|
|
};
|
|
|
|
struct iface_patt *iface_patt_find(list *, struct iface *);
|
|
int iface_patts_equal(list *, list *, int (*)(struct iface_patt *, struct iface_patt *));
|
|
|
|
#endif
|