util

func IPToUint ¶

func IPToUint(addr net.IP) uint32

IPToUint converts an IP address to a uint32 for BPF map operations. On little-endian hosts (x86_64), this produces the same byte representation that the BPF program sees when reading ip->saddr/ip->daddr as __u32.

func MaskToUint ¶

func MaskToUint(mask net.IPMask) uint32

MaskToUint converts a netmask to a uint32 for BPF map operations.

func ToHost16 ¶

func ToHost16(n uint16) uint16

func ToHostBytes32 ¶

func ToHostBytes32(n uint32) []byte

func ToIP ¶

func ToIP(addr uint32) net.IP

ToIP converts a uint32 from BPF back to a net.IP. This is the inverse of IPToUint.

func ToNetBytes16 ¶

func ToNetBytes16(n uint16) uint16

func ToNetMask ¶

func ToNetMask(addr, mask uint32) *net.IPNet

ToNetMask converts uint32 addr and mask back to an IPNet.