bgp-bgpq4/sx_prefix.h

#ifndef _SX_PREFIX_H_
#define _SX_PREFIX_H_

#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>

typedef struct sx_prefix { 
	int family; 
	int masklen; 
	union { 
		struct in_addr  addr; 
		struct in6_addr addr6; 
		unsigned char   addrs[sizeof(struct in6_addr)];
	} addr;
} sx_prefix_t;

typedef struct sx_radix_node { 
	struct sx_radix_node* parent, *l, *r, *son;
	void* payload;
	unsigned int isGlue:1;
	unsigned int isAggregated:1;
	unsigned int isAggregate:1;
	unsigned int aggregateLow;
	unsigned int aggregateHi;
	struct sx_prefix prefix;
} sx_radix_node_t;

typedef struct sx_radix_tree { 
	int family;
	struct sx_radix_node* head;
} sx_radix_tree_t;

/* most common operations with the tree is to: lookup/insert/unlink */
struct sx_radix_node* sx_radix_tree_lookup(struct sx_radix_tree* tree,
	struct sx_prefix* prefix);
struct sx_radix_node* sx_radix_tree_insert(struct sx_radix_tree* tree, 
	struct sx_prefix* prefix);
void sx_radix_tree_unlink(struct sx_radix_tree* t, struct sx_radix_node* n);
struct sx_radix_node* sx_radix_tree_lookup_exact(struct sx_radix_tree* tree,
	struct sx_prefix* prefix);

struct sx_prefix* sx_prefix_alloc(struct sx_prefix* p);
void sx_prefix_destroy(struct sx_prefix* p);
void sx_prefix_adjust_masklen(struct sx_prefix* p);
struct sx_prefix* sx_prefix_new(int af, char* text);
int sx_prefix_parse(struct sx_prefix* p, int af, char* text);
int sx_prefix_fprint(FILE* f, struct sx_prefix* p);
int sx_prefix_snprintf(struct sx_prefix* p, char* rbuffer, int srb);
struct sx_radix_tree* sx_radix_tree_new(int af);
struct sx_radix_node* sx_radix_node_new(struct sx_prefix* prefix);
struct sx_prefix* sx_prefix_overlay(struct sx_prefix* p, int n);
void sx_radix_node_fprintf(struct sx_radix_node* node, void* udata);
int  sx_radix_node_foreach(struct sx_radix_node* node, 
	void (*func)(struct sx_radix_node*, void*), void* udata);
int sx_radix_tree_foreach(struct sx_radix_tree* tree, 
	void (*func)(struct sx_radix_node*, void*), void* udata);
int sx_radix_tree_aggregate(struct sx_radix_tree* tree);
int sx_radix_tree_refine(struct sx_radix_tree* tree, unsigned refine);


#endif