117 lines
2.5 KiB
Go
117 lines
2.5 KiB
Go
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package netlink
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import (
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"fmt"
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"net"
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"strings"
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)
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// Scope is an enum representing a route scope.
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type Scope uint8
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type NextHopFlag int
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type Destination interface {
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Family() int
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Decode([]byte) error
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Encode() ([]byte, error)
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String() string
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}
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type Encap interface {
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Type() int
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Decode([]byte) error
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Encode() ([]byte, error)
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String() string
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}
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// Route represents a netlink route.
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type Route struct {
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LinkIndex int
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ILinkIndex int
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Scope Scope
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Dst *net.IPNet
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Src net.IP
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Gw net.IP
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MultiPath []*NexthopInfo
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Protocol int
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Priority int
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Table int
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Type int
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Tos int
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Flags int
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MPLSDst *int
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NewDst Destination
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Encap Encap
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}
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func (r Route) String() string {
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elems := []string{}
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if len(r.MultiPath) == 0 {
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elems = append(elems, fmt.Sprintf("Ifindex: %d", r.LinkIndex))
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}
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if r.MPLSDst != nil {
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elems = append(elems, fmt.Sprintf("Dst: %d", r.MPLSDst))
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} else {
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elems = append(elems, fmt.Sprintf("Dst: %s", r.Dst))
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}
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if r.NewDst != nil {
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elems = append(elems, fmt.Sprintf("NewDst: %s", r.NewDst))
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}
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if r.Encap != nil {
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elems = append(elems, fmt.Sprintf("Encap: %s", r.Encap))
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}
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elems = append(elems, fmt.Sprintf("Src: %s", r.Src))
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if len(r.MultiPath) > 0 {
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elems = append(elems, fmt.Sprintf("Gw: %s", r.MultiPath))
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} else {
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elems = append(elems, fmt.Sprintf("Gw: %s", r.Gw))
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}
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elems = append(elems, fmt.Sprintf("Flags: %s", r.ListFlags()))
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elems = append(elems, fmt.Sprintf("Table: %d", r.Table))
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return fmt.Sprintf("{%s}", strings.Join(elems, " "))
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}
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func (r *Route) SetFlag(flag NextHopFlag) {
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r.Flags |= int(flag)
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}
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func (r *Route) ClearFlag(flag NextHopFlag) {
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r.Flags &^= int(flag)
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}
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type flagString struct {
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f NextHopFlag
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s string
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}
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// RouteUpdate is sent when a route changes - type is RTM_NEWROUTE or RTM_DELROUTE
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type RouteUpdate struct {
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Type uint16
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Route
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}
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type NexthopInfo struct {
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LinkIndex int
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Hops int
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Gw net.IP
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Flags int
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NewDst Destination
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Encap Encap
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}
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func (n *NexthopInfo) String() string {
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elems := []string{}
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elems = append(elems, fmt.Sprintf("Ifindex: %d", n.LinkIndex))
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if n.NewDst != nil {
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elems = append(elems, fmt.Sprintf("NewDst: %s", n.NewDst))
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}
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if n.Encap != nil {
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elems = append(elems, fmt.Sprintf("Encap: %s", n.Encap))
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}
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elems = append(elems, fmt.Sprintf("Weight: %d", n.Hops+1))
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elems = append(elems, fmt.Sprintf("Gw: %d", n.Gw))
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elems = append(elems, fmt.Sprintf("Flags: %s", n.ListFlags()))
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return fmt.Sprintf("{%s}", strings.Join(elems, " "))
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}
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