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net/netaddr: start migrating to net/netip via new netaddr adapter package

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Updates #5162

Change-Id: Id7bdec303b25471f69d542f8ce43805328d56c12
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This commit is contained in:
Brad Fitzpatrick
2022-07-24 20:08:42 -07:00
committed by Brad Fitzpatrick
parent 7b1a91dfd3
commit 7eaf5e509f
191 changed files with 1009 additions and 888 deletions
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31
net/dns/resolver/forwarder.go
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@@ -24,16 +24,17 @@ import (
"time"
dns "golang.org/x/net/dns/dnsmessage"
"inet.af/netaddr"
"tailscale.com/envknob"
"tailscale.com/hostinfo"
"tailscale.com/net/dns/publicdns"
"tailscale.com/net/dnscache"
"tailscale.com/net/netaddr"
"tailscale.com/net/neterror"
"tailscale.com/net/netns"
"tailscale.com/net/tsdial"
"tailscale.com/types/dnstype"
"tailscale.com/types/logger"
"tailscale.com/types/nettype"
"tailscale.com/util/cloudenv"
"tailscale.com/util/dnsname"
"tailscale.com/wgengine/monitor"
@@ -267,7 +268,7 @@ func resolversWithDelays(resolvers []*dnstype.Resolver) []resolverAndDelay {
if !ok {
continue
}
dohBase, ok := publicdns.KnownDoH()[ipp.IP()]
dohBase, ok := publicdns.KnownDoH()[ipp.Addr()]
if !ok || didDoH[dohBase] {
continue
}
@@ -288,12 +289,12 @@ func resolversWithDelays(resolvers []*dnstype.Resolver) []resolverAndDelay {
rr = append(rr, resolverAndDelay{name: r})
continue
}
ip := ipp.IP()
ip := ipp.Addr()
var startDelay time.Duration
if host, ok := publicdns.KnownDoH()[ip]; ok {
// We already did the DoH query early. These
startDelay = dohHeadStart
key := hostAndFam{host, ip.BitLen()}
key := hostAndFam{host, uint8(ip.BitLen())}
if done[key] > 0 {
startDelay += wellKnownHostBackupDelay
}
@@ -364,13 +365,9 @@ func (f *forwarder) setRoutes(routesBySuffix map[dnsname.FQDN][]*dnstype.Resolve
f.cloudHostFallback = cloudHostFallback
}
var stdNetPacketListener packetListener = new(net.ListenConfig)
var stdNetPacketListener nettype.PacketListenerWithNetIP = nettype.MakePacketListenerWithNetIP(new(net.ListenConfig))
type packetListener interface {
ListenPacket(ctx context.Context, network, address string) (net.PacketConn, error)
}
func (f *forwarder) packetListener(ip netaddr.IP) (packetListener, error) {
func (f *forwarder) packetListener(ip netaddr.IP) (nettype.PacketListenerWithNetIP, error) {
if f.linkSel == nil || initListenConfig == nil {
return stdNetPacketListener, nil
}
@@ -382,7 +379,7 @@ func (f *forwarder) packetListener(ip netaddr.IP) (packetListener, error) {
if err := initListenConfig(lc, f.linkMon, linkName); err != nil {
return nil, err
}
return lc, nil
return nettype.MakePacketListenerWithNetIP(lc), nil
}
// getKnownDoHClientForProvider returns an HTTP client for a specific DoH
@@ -528,11 +525,17 @@ func (f *forwarder) sendUDP(ctx context.Context, fq *forwardQuery, rr resolverAn
}
metricDNSFwdUDP.Add(1)
ln, err := f.packetListener(ipp.IP())
ln, err := f.packetListener(ipp.Addr())
if err != nil {
return nil, err
}
conn, err := ln.ListenPacket(ctx, "udp", ":0")
// Specify the exact UDP family to work around https://github.com/golang/go/issues/52264
udpFam := "udp4"
if ipp.Addr().Is6() {
udpFam = "udp6"
}
conn, err := ln.ListenPacket(ctx, udpFam, ":0")
if err != nil {
f.logf("ListenPacket failed: %v", err)
return nil, err
@@ -542,7 +545,7 @@ func (f *forwarder) sendUDP(ctx context.Context, fq *forwardQuery, rr resolverAn
fq.closeOnCtxDone.Add(conn)
defer fq.closeOnCtxDone.Remove(conn)
if _, err := conn.WriteTo(fq.packet, ipp.UDPAddr()); err != nil {
if _, err := conn.WriteToUDPAddrPort(fq.packet, ipp); err != nil {
metricDNSFwdUDPErrorWrite.Add(1)
if err := ctx.Err(); err != nil {
return nil, err