Function RegisterLayerType

layertype.go:53–64

RegisterLayerType creates a new layer type and registers it globally. The number passed in must be unique, or a runtime panic will occur. Numbers 0-999 are reserved for the gopacket library. Numbers 1000-1999 should be used for common application-specific types, and are very fast. Any other numbe

(num int, meta LayerTypeMetadata)

// types, and are somewhat slower (they require a map lookup over an array
// index).
func RegisterLayerType(num int, meta LayerTypeMetadata) LayerType {
	if 0 <= num && num < maxLayerType {
		if ltMeta[num].inUse {
			panic("Layer type already exists")
		}
	} else {
		if ltMetaMap[LayerType(num)].inUse {
			panic("Layer type already exists")
		}
	}
	return OverrideLayerType(num, meta)
}

// OverrideLayerType acts like RegisterLayerType, except that if the layer type
// has already been registered, it overrides the metadata with the passed-in