tailscale/wgengine/monitor/monitor_linux_test.go
Brad Fitzpatrick a12aad6b47 all: convert more code to use net/netip directly
perl -i -npe 's,netaddr.IPPrefixFrom,netip.PrefixFrom,' $(git grep -l -F netaddr.)
    perl -i -npe 's,netaddr.IPPortFrom,netip.AddrPortFrom,' $(git grep -l -F netaddr. )
    perl -i -npe 's,netaddr.IPPrefix,netip.Prefix,g' $(git grep -l -F netaddr. )
    perl -i -npe 's,netaddr.IPPort,netip.AddrPort,g' $(git grep -l -F netaddr. )
    perl -i -npe 's,netaddr.IP\b,netip.Addr,g' $(git grep -l -F netaddr. )
    perl -i -npe 's,netaddr.IPv6Raw\b,netip.AddrFrom16,g' $(git grep -l -F netaddr. )
    goimports -w .

Then delete some stuff from the net/netaddr shim package which is no
longer neeed.

Updates #5162

Change-Id: Ia7a86893fe21c7e3ee1ec823e8aba288d4566cd8
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2022-07-25 21:53:49 -07:00

101 lines
2.3 KiB
Go

// Copyright (c) 2022 Tailscale Inc & AUTHORS All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package monitor
import (
"net"
"net/netip"
"testing"
"github.com/jsimonetti/rtnetlink"
"github.com/mdlayher/netlink"
"golang.org/x/sys/unix"
)
func newAddrMsg(iface uint32, addr string, typ netlink.HeaderType) netlink.Message {
ip := net.ParseIP(addr)
if ip == nil {
panic("newAddrMsg: invalid addr: " + addr)
}
addrMsg := rtnetlink.AddressMessage{
Index: iface,
Attributes: &rtnetlink.AddressAttributes{
Address: ip,
},
}
b, err := addrMsg.MarshalBinary()
if err != nil {
panic(err)
}
return netlink.Message{
Header: netlink.Header{Type: typ},
Data: b,
}
}
// See issue #4282 and nlConn.addrCache.
func TestIgnoreDuplicateNEWADDR(t *testing.T) {
mustReceive := func(c *nlConn) message {
msg, err := c.Receive()
if err != nil {
t.Fatalf("mustReceive: unwanted error: %s", err)
}
return msg
}
t.Run("suppress duplicate NEWADDRs", func(t *testing.T) {
c := nlConn{
buffered: []netlink.Message{
newAddrMsg(1, "192.168.0.5", unix.RTM_NEWADDR),
newAddrMsg(1, "192.168.0.5", unix.RTM_NEWADDR),
},
addrCache: make(map[uint32]map[netip.Addr]bool),
}
msg := mustReceive(&c)
if _, ok := msg.(*newAddrMessage); !ok {
t.Fatalf("want newAddrMessage, got %T %v", msg, msg)
}
msg = mustReceive(&c)
if _, ok := msg.(ignoreMessage); !ok {
t.Fatalf("want ignoreMessage, got %T %v", msg, msg)
}
})
t.Run("do not suppress after DELADDR", func(t *testing.T) {
c := nlConn{
buffered: []netlink.Message{
newAddrMsg(1, "192.168.0.5", unix.RTM_NEWADDR),
newAddrMsg(1, "192.168.0.5", unix.RTM_DELADDR),
newAddrMsg(1, "192.168.0.5", unix.RTM_NEWADDR),
},
addrCache: make(map[uint32]map[netip.Addr]bool),
}
msg := mustReceive(&c)
if _, ok := msg.(*newAddrMessage); !ok {
t.Fatalf("want newAddrMessage, got %T %v", msg, msg)
}
msg = mustReceive(&c)
if m, ok := msg.(*newAddrMessage); !ok {
t.Fatalf("want newAddrMessage, got %T %v", msg, msg)
} else {
if !m.Delete {
t.Fatalf("want delete, got %#v", m)
}
}
msg = mustReceive(&c)
if _, ok := msg.(*newAddrMessage); !ok {
t.Fatalf("want newAddrMessage, got %T %v", msg, msg)
}
})
}