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Support fibmatch flag for RouteGetWithOptions

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Support `ip route get fibmatch` equivalent with RouteGetWithOptions by
adding FIBMatch flag to RouteGetOptions.

Signed-off-by: Yutaro Hayakawa <yutaro.hayakawa@isovalent.com>
This commit is contained in:
Yutaro Hayakawa 2023-07-05 12:56:08 +09:00 committed by Alessandro Boch
parent 77712cff87
commit bd5868794c
2 changed files with 69 additions and 6 deletions
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16
route_linux.go
View File

@ -1320,12 +1320,13 @@ func deserializeRoute(m []byte) (Route, error) {
// RouteGetOptions contains a set of options to use with
// RouteGetWithOptions
type RouteGetOptions struct {
Iif string
Oif string
VrfName string
SrcAddr net.IP
UID *uint32
Mark int
Iif string
Oif string
VrfName string
SrcAddr net.IP
UID *uint32
Mark int
FIBMatch bool
}
// RouteGetWithOptions gets a route to a specific destination from the host system.
@ -1361,6 +1362,9 @@ func (h *Handle) RouteGetWithOptions(destination net.IP, options *RouteGetOption
msg.Src_len = bitlen
}
msg.Flags = unix.RTM_F_LOOKUP_TABLE
if options != nil && options.FIBMatch {
msg.Flags |= unix.RTM_F_FIB_MATCH
}
req.AddData(msg)
rtaDst := nl.NewRtAttr(unix.RTA_DST, destinationData)

59
route_test.go
View File

@ -2019,3 +2019,62 @@ func TestRouteFWMarkOption(t *testing.T) {
t.Fatal(routes)
}
}
func TestRouteGetFIBMatchOption(t *testing.T) {
tearDown := setUpNetlinkTest(t)
defer tearDown()
err := LinkAdd(&Dummy{LinkAttrs{Name: "eth0"}})
if err != nil {
t.Fatal(err)
}
link, err := LinkByName("eth0")
if err != nil {
t.Fatal(err)
}
if err = LinkSetUp(link); err != nil {
t.Fatal(err)
}
addr := &Addr{
IPNet: &net.IPNet{
IP: net.IPv4(192, 168, 0, 2),
Mask: net.CIDRMask(24, 32),
},
}
if err = AddrAdd(link, addr); err != nil {
t.Fatal(err)
}
route := &Route{
LinkIndex: link.Attrs().Index,
Gw: net.IPv4(192, 168, 1, 1),
Dst: &net.IPNet{
IP: net.IPv4(192, 168, 2, 0),
Mask: net.CIDRMask(24, 32),
},
Flags: int(FLAG_ONLINK),
}
err = RouteAdd(route)
if err != nil {
t.Fatal(err)
}
routes, err := RouteGetWithOptions(net.IPv4(192, 168, 2, 1), &RouteGetOptions{FIBMatch: true})
if err != nil {
t.Fatal(err)
}
if len(routes) != 1 {
t.Fatalf("More than one route matched %v", routes)
}
if len(routes[0].ListFlags()) != 1 {
t.Fatalf("More than one route flag returned %v", routes[0].ListFlags())
}
flag := routes[0].ListFlags()[0]
if flag != "onlink" {
t.Fatalf("Unexpected flag %s returned", flag)
}
}