Revision cf318e3c nest/iface.h

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nest/iface.h
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/*
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 *	BIRD Internet Routing Daemon -- Network Interfaces
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 *
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 *	(c) 1998--1999 Martin Mares <mj@ucw.cz>
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 *	(c) 1998--2000 Martin Mares <mj@ucw.cz>
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 *
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 *	Can be freely distributed and used under the terms of the GNU GPL.
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 */
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struct iface *if_find_by_index(unsigned);
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struct iface *if_find_by_name(char *);
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/*
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 *	Neighbor Cache. We hold (direct neighbor, protocol) pairs we've seen
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 *	along with pointer to protocol-specific data.
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 *
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 *	The primary goal of this cache is to quickly validate all incoming
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 *	packets if their have been sent by our neighbors and to notify
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 *	protocols about lost neighbors when an interface goes down.
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 *
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 *	Anyway, it can also contain `sticky' entries for currently unreachable
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 *	addresses which cause notification when the address becomes a neighbor.
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 */
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/* The Neighbor Cache */
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typedef struct neighbor {
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  node n;				/* Node in global neighbor list */
......
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#define NEF_STICKY 1
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/*
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 * Find neighbor or return NULL if it doesn't exist.
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 * If you specify flags == NEF_STICKY, a sticky entry is created if the
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 * address is not a neighbor, but NULL can still be returned if the address
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 * given is invalid.
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 */
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neighbor *neigh_find(struct proto *, ip_addr *, unsigned flags);
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static inline int neigh_connected_to(struct proto *p, ip_addr *a, struct iface *i)

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