netutils

package

v1.0.0 Latest Latest Go to latest Published: Aug 21, 2015 License: Apache-2.0 Imports: 8 Imported by: 0

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func CreateBitset(numBitsWide uint) *bitset.BitSet

CreateBitset initializes a bit set with 2^numBitsWide bits

func GetIPNumber(subnetIP string, subnetLen uint, allocSubnetLen uint, hostIP string) (uint, error)

GetIPNumber obtains the host id from the host IP. SEe `GetSubnetIP` for more information.

func GetInterfaceIP(linkName string) (string, error)

GetInterfaceIP obtains the ip addr of a local interface on the host.

func GetLocalIP() (string, error)

GetLocalIP obtains the first IP on a local interface on the host.

func GetSubnetIP(subnetIP string, subnetLen uint, allocSubnetLen, hostID uint) (string, error)

GetSubnetIP given a subnet IP and host identifier, calculates an IP within the subnet for use.

func InitSubnetBitset(b *bitset.BitSet, subnetLen uint)

InitSubnetBitset initializes a bit set with 2^(32 - subnetLen) bits

func ParseCIDR(cidrStr string) (string, uint, error)

ParseCIDR parses a CIDR string into a gateway IP and length.

func SetInterfaceMac(name string, macaddr string) error

SetInterfaceMac : Set mac address of an interface

type TagRange struct {
	Min int
	Max int
}

TagRange represents a range of integers, intended for VLAN and VXLAN tagging.

func ParseTagRanges(ranges string, tagType string) ([]TagRange, error)

ParseTagRanges takes a string such as 12-24,48-64 and turns it into a series of TagRange.