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ipv6.go
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ipv6.go
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// SPDX-License-Identifier: Apache-2.0
// Copyright 2019 Authors of Cilium
package nat
import (
"fmt"
"unsafe"
"github.com/cilium/cilium/pkg/byteorder"
"github.com/cilium/cilium/pkg/tuple"
"github.com/cilium/cilium/pkg/types"
)
// NatEntry6 represents an IPv6 entry in the NAT table.
// +k8s:deepcopy-gen=true
// +k8s:deepcopy-gen:interfaces=github.com/cilium/cilium/pkg/bpf.MapValue
type NatEntry6 struct {
Created uint64 `align:"created"`
HostLocal uint64 `align:"host_local"`
Pad1 uint64 `align:"pad1"`
Pad2 uint64 `align:"pad2"`
Addr types.IPv6 `align:"to_saddr"`
Port uint16 `align:"to_sport"`
}
// SizeofNatEntry6 is the size of the NatEntry6 type in bytes.
const SizeofNatEntry6 = int(unsafe.Sizeof(NatEntry6{}))
// GetValuePtr returns the unsafe.Pointer for n.
func (n *NatEntry6) GetValuePtr() unsafe.Pointer { return unsafe.Pointer(n) }
// String returns the readable format.
func (n *NatEntry6) String() string {
return fmt.Sprintf("Addr=%s Port=%d Created=%d HostLocal=%d\n",
n.Addr,
n.Port,
n.Created,
n.HostLocal)
}
// Dump dumps NAT entry to string.
func (n *NatEntry6) Dump(key NatKey, start uint64) string {
var which string
if key.GetFlags()&tuple.TUPLE_F_IN != 0 {
which = "DST"
} else {
which = "SRC"
}
return fmt.Sprintf("XLATE_%s [%s]:%d Created=%s HostLocal=%d\n",
which,
n.Addr,
n.Port,
NatDumpCreated(start, n.Created),
n.HostLocal)
}
// ToHost converts NatEntry4 ports to host byte order.
func (n *NatEntry6) ToHost() NatEntry {
x := *n
x.Port = byteorder.NetworkToHost16(n.Port)
return &x
}