Import ipset-2.3.1a-20080617

extensions/ipset/ip_set_ipmap.h

@@ -0,0 +1,56 @@
+#ifndef __IP_SET_IPMAP_H
+#define __IP_SET_IPMAP_H
+
+#include "ip_set.h"
+
+#define SETTYPE_NAME "ipmap"
+#define MAX_RANGE 0x0000FFFF
+
+struct ip_set_ipmap {
+	void *members;			/* the ipmap proper */
+	ip_set_ip_t first_ip;		/* host byte order, included in range */
+	ip_set_ip_t last_ip;		/* host byte order, included in range */
+	ip_set_ip_t netmask;		/* subnet netmask */
+	ip_set_ip_t sizeid;		/* size of set in IPs */
+	ip_set_ip_t hosts;		/* number of hosts in a subnet */
+};
+
+struct ip_set_req_ipmap_create {
+	ip_set_ip_t from;
+	ip_set_ip_t to;
+	ip_set_ip_t netmask;
+};
+
+struct ip_set_req_ipmap {
+	ip_set_ip_t ip;
+};
+
+unsigned int
+mask_to_bits(ip_set_ip_t mask)
+{
+	unsigned int bits = 32;
+	ip_set_ip_t maskaddr;
+	
+	if (mask == 0xFFFFFFFF)
+		return bits;
+	
+	maskaddr = 0xFFFFFFFE;
+	while (--bits >= 0 && maskaddr != mask)
+		maskaddr <<= 1;
+	
+	return bits;
+}
+
+ip_set_ip_t
+range_to_mask(ip_set_ip_t from, ip_set_ip_t to, unsigned int *bits)
+{
+	ip_set_ip_t mask = 0xFFFFFFFE;
+	
+	*bits = 32;
+	while (--(*bits) >= 0 && mask && (to & mask) != from)
+		mask <<= 1;
+		
+	return mask;
+}
+	
+#endif /* __IP_SET_IPMAP_H */