diff options
Diffstat (limited to 'nest/iface.h')
| -rw-r--r-- | nest/iface.h | 95 |
1 files changed, 78 insertions, 17 deletions
diff --git a/nest/iface.h b/nest/iface.h index 87ad86cf..05898a55 100644 --- a/nest/iface.h +++ b/nest/iface.h @@ -9,20 +9,11 @@ #ifndef _BIRD_IFACE_H_ #define _BIRD_IFACE_H_ +#include "lib/locking.h" #include "lib/event.h" #include "lib/lists.h" +#include "lib/tlists.h" #include "lib/ip.h" -#include "lib/locking.h" - -DEFINE_DOMAIN(attrs); -extern list global_iface_list; -extern DOMAIN(attrs) iface_domain; - -#define IFACE_LEGACY_ACCESS ASSERT_DIE(birdloop_inside(&main_birdloop)) - -#define IFACE_LOCK LOCK_DOMAIN(attrs, iface_domain) -#define IFACE_UNLOCK UNLOCK_DOMAIN(attrs, iface_domain) -#define ASSERT_IFACE_LOCKED ASSERT_DIE(DOMAIN_IS_LOCKED(attrs, iface_domain)) struct proto; struct pool; @@ -36,6 +27,7 @@ struct ifa { /* Interface address */ ip_addr opposite; /* Opposite end of a point-to-point link */ unsigned scope; /* Interface address scope */ unsigned flags; /* Analogous to iface->flags */ + unsigned uc; /* Use (link) count */ }; extern struct iface default_vrf; @@ -54,6 +46,7 @@ struct iface { struct ifa *llv6; /* Primary link-local address for IPv6 */ ip4_addr sysdep; /* Arbitrary IPv4 address for internal sysdep use */ list neighbors; /* All neighbors on this interface */ + unsigned uc; /* Use (link) count */ }; #define IF_UP 1 /* Currently just IF_ADMIN_UP */ @@ -118,49 +111,59 @@ void ifa_dump(struct ifa *); void if_show(void); void if_show_summary(void); struct iface *if_update(struct iface *); +struct iface *if_update_locked(struct iface *); void if_delete(struct iface *old); 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_index_locked(unsigned); struct iface *if_find_by_name(const char *); struct iface *if_get_by_name(const char *); void if_recalc_all_preferred_addresses(void); +struct iface *if_walk_first(void); +struct iface *if_walk_next(struct iface *); +void if_walk_done(void); + +#define IFACE_WALK(_i) for (struct iface *_i = if_walk_first(); _i || (if_walk_done(), 0); _i = if_walk_next(_i)) /* The Neighbor Cache */ typedef struct neighbor { node n; /* Node in neighbor hash table chain */ node if_n; /* Node in per-interface neighbor list */ + TLIST_NODE(proto_neigh, struct neighbor) proto_n; ip_addr addr; /* Address of the neighbor */ struct ifa *ifa; /* Ifa on related iface */ struct iface *iface; /* Interface it's connected to */ struct iface *ifreq; /* Requested iface, NULL for any */ - struct event event; /* Notification event */ struct proto *proto; /* Protocol this belongs to */ void *data; /* Protocol-specific data */ uint aux; /* Protocol-specific data */ u16 flags; /* NEF_* flags */ s16 scope; /* Address scope, -1 for unreachable neighbors, SCOPE_HOST when it's our own address */ + uint uc; /* Use (link) count */ } neighbor; +#define TLIST_PREFIX proto_neigh +#define TLIST_TYPE struct neighbor +#define TLIST_ITEM proto_n +#define TLIST_WANT_WALK +#define TLIST_WANT_ADD_TAIL +#include "lib/tlists.h" + #define NEF_STICKY 1 #define NEF_ONLINK 2 #define NEF_IFACE 4 /* Entry for whole iface */ -#define NEF_NOTIFY_MAIN 0x100 /* Notify from main_birdloop context */ neighbor *neigh_find(struct proto *p, ip_addr a, struct iface *ifa, uint flags); -void neigh_dump(neighbor *); void neigh_dump_all(void); -void neigh_prune(struct proto *p); void neigh_if_up(struct iface *); void neigh_if_down(struct iface *); void neigh_if_link(struct iface *); @@ -168,6 +171,64 @@ void neigh_ifa_up(struct ifa *a); void neigh_ifa_down(struct ifa *a); void neigh_init(struct pool *); +void neigh_link(neighbor *); +void neigh_unlink(neighbor *); + +/* + * Notification mechanism + */ + +#define TLIST_PREFIX ifnot +#define TLIST_TYPE struct iface_notification +#define TLIST_ITEM nn +#define TLIST_WANT_WALK +#define TLIST_WANT_ADD_TAIL + +struct iface_notification { + TLIST_DEFAULT_NODE; + enum { + IFNOT_INVALID, + IFNOT_ADDRESS, + IFNOT_INTERFACE, + IFNOT_NEIGHBOR, + } type; + unsigned flags; + union { + struct ifa *a; + struct iface *i; + neighbor *n; + }; +}; + +#include "lib/tlists.h" + +#define TLIST_PREFIX ifsub +#define TLIST_TYPE struct iface_subscription +#define TLIST_ITEM n +#define TLIST_WANT_WALK +#define TLIST_WANT_ADD_TAIL + +struct iface_subscription { + TLIST_DEFAULT_NODE; + + event event; + event_list *target; + TLIST_LIST(ifnot) queue; + + void (*if_notify)(struct proto *, unsigned flags, struct iface *i); + void (*ifa_notify)(struct proto *, unsigned flags, struct ifa *a); + void (*neigh_notify)(struct neighbor *neigh); +}; + +#include "lib/tlists.h" + +void if_enqueue_notify(struct iface_notification); +void if_enqueue_notify_to(struct iface_notification x, struct iface_subscription *s); + +void iface_flush_notifications(struct iface_subscription *); +void iface_subscribe(struct iface_subscription *); +void iface_unsubscribe(struct iface_subscription *); + /* * Interface Pattern Lists */ |