Beispiel #1
0
// ClearBitsOutsideRange sets all IPs outside range as used
func ClearBitsOutsideRange(ipAllocMap *bitset.BitSet, ipRange string, subnetLen uint) {
	var i uint32
	rangeMin, _ := ipv4ToUint32(getFirstAddrInRange(ipRange))
	rangeMax, _ := ipv4ToUint32(getLastAddrInRange(ipRange, subnetLen))
	firstAddr, _ := ipv4ToUint32(GetSubnetAddr(ipRange, subnetLen))
	lastAddr, _ := ipv4ToUint32(getLastAddrInSubnet(ipRange, subnetLen))

	// Set bits lower than rangeMin as used
	for i = 0; i < (rangeMin - firstAddr); i++ {
		ipAllocMap.Clear(uint(i))
	}

	// Set bits greater than the rangeMax as used
	for i = ((rangeMin - firstAddr) + ((rangeMax - rangeMin) + 1)); i < (lastAddr - firstAddr); i++ {
		ipAllocMap.Clear(uint(i))
	}
}
Beispiel #2
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func clearReservedVLANs(vlanBitset *bitset.BitSet) {
	vlanBitset.Clear(0)
	vlanBitset.Clear(4095)
}
Beispiel #3
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// ClearReservedEntries clears reserved bits
func ClearReservedEntries(b *bitset.BitSet, subnetLen uint) {
	maxSize := (1 << (32 - subnetLen)) - 1
	b.Clear(uint(maxSize))
	b.Clear(uint(0))
}
Beispiel #4
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// InitSubnetBitset initializes a bit set with 2^(32 - subnetLen) bits
func InitSubnetBitset(b *bitset.BitSet, subnetLen uint) {
	maxSize := (1 << (32 - subnetLen)) - 1
	b.Set(uint(maxSize))
	b.Set(uint(0))
}