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ipn/ipnlocal: Update hostinfo to control on service config change

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This commit fixes the bug that c2n requests are skiped when updating vipServices in serveConfig. This then resulted
netmap update being skipped which caused inaccuracy of Capmap info on client side. After this fix, client always
inform control about it's vipServices config changes.

Fixes tailscale/corp#29219

Signed-off-by: KevinLiang10 <37811973+KevinLiang10@users.noreply.github.com>
This commit is contained in:
KevinLiang10 2025-05-30 17:30:05 -04:00
parent 92c0bf5af2
commit 32d109548f
2 changed files with 64 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
ipn/ipnlocal/local.go
View File

@ -6146,17 +6146,17 @@ func (b *LocalBackend) setTCPPortsInterceptedFromNetmapAndPrefsLocked(prefs ipn.
}
}
// Update funnel info in hostinfo and kick off control update if needed.
b.updateIngressLocked()
// Update funnel and service hash info in hostinfo and kick off control update if needed.
b.updateIngressAndServiceHashLocked(prefs)
b.setTCPPortsIntercepted(handlePorts)
b.setVIPServicesTCPPortsInterceptedLocked(vipServicesPorts)
}
// updateIngressLocked updates the hostinfo.WireIngress and hostinfo.IngressEnabled fields and kicks off a Hostinfo
// update if the values have changed.
// updateIngressAndServiceHashLocked updates the hostinfo.ServicesHash, hostinfo.WireIngress and
// hostinfo.IngressEnabled fields and kicks off a Hostinfo update if the values have changed.
//
// b.mu must be held.
func (b *LocalBackend) updateIngressLocked() {
func (b *LocalBackend) updateIngressAndServiceHashLocked(prefs ipn.PrefsView) {
if b.hostinfo == nil {
return
}
@ -6171,6 +6171,12 @@ func (b *LocalBackend) updateIngressLocked() {
b.hostinfo.WireIngress = wire
hostInfoChanged = true
}
latestHash := b.vipServiceHash(b.vipServicesFromPrefsLocked(prefs))
if b.hostinfo.ServicesHash != latestHash {
b.logf("Hostinfo.ServicesHash changed to %s", latestHash)
b.hostinfo.ServicesHash = latestHash
hostInfoChanged = true
}
// Kick off a Hostinfo update to control if ingress status has changed.
if hostInfoChanged {
b.goTracker.Go(b.doSetHostinfoFilterServices)

56
ipn/ipnlocal/local_test.go
View File

@ -5134,7 +5134,8 @@ func TestUpdatePrefsOnSysPolicyChange(t *testing.T) {
}
}
func TestUpdateIngressLocked(t *testing.T) {
func TestUpdateIngressAndServiceHashLocked(t *testing.T) {
prefs := ipn.NewPrefs().View()
tests := []struct {
name string
hi *tailcfg.Hostinfo
@ -5163,6 +5164,16 @@ func TestUpdateIngressLocked(t *testing.T) {
wantWireIngress: false, // implied by wantIngress
wantControlUpdate: true,
},
{
name: "empty_hostinfo_service_configured",
hi: &tailcfg.Hostinfo{},
sc: &ipn.ServeConfig{
Services: map[tailcfg.ServiceName]*ipn.ServiceConfig{
"svc:abc": {Tun: true},
},
},
wantControlUpdate: true,
},
{
name: "empty_hostinfo_funnel_disabled",
hi: &tailcfg.Hostinfo{},
@ -5175,7 +5186,7 @@ func TestUpdateIngressLocked(t *testing.T) {
wantControlUpdate: true,
},
{
name: "empty_hostinfo_no_funnel",
name: "empty_hostinfo_no_funnel_no_service",
hi: &tailcfg.Hostinfo{},
sc: &ipn.ServeConfig{
TCP: map[uint16]*ipn.TCPPortHandler{
@ -5196,6 +5207,17 @@ func TestUpdateIngressLocked(t *testing.T) {
wantIngress: true,
wantWireIngress: false, // implied by wantIngress
},
{
name: "service_hash_no_change",
hi: &tailcfg.Hostinfo{
ServicesHash: "5c5fd5093eb8764e1b70110dbfe5bc4370a214fdc5bc5a0fcdf32689fb5cb571",
},
sc: &ipn.ServeConfig{
Services: map[tailcfg.ServiceName]*ipn.ServiceConfig{
"svc:abc": {Tun: true},
},
},
},
{
name: "funnel_disabled_no_change",
hi: &tailcfg.Hostinfo{
@ -5208,6 +5230,14 @@ func TestUpdateIngressLocked(t *testing.T) {
},
wantWireIngress: true, // true if there is any AllowFunnel block
},
{
name: "service_got_removed",
hi: &tailcfg.Hostinfo{
ServicesHash: "5c5fd5093eb8764e1b70110dbfe5bc4370a214fdc5bc5a0fcdf32689fb5cb571",
},
sc: &ipn.ServeConfig{},
wantControlUpdate: true,
},
{
name: "funnel_changes_to_disabled",
hi: &tailcfg.Hostinfo{
@ -5235,6 +5265,22 @@ func TestUpdateIngressLocked(t *testing.T) {
wantWireIngress: false, // implied by wantIngress
wantControlUpdate: true,
},
{
name: "both_funnel_and_service_changes",
hi: &tailcfg.Hostinfo{
IngressEnabled: true,
},
sc: &ipn.ServeConfig{
AllowFunnel: map[ipn.HostPort]bool{
"tailnet.xyz:443": false,
},
Services: map[tailcfg.ServiceName]*ipn.ServiceConfig{
"svc:abc": {Tun: true},
},
},
wantWireIngress: true, // true if there is any AllowFunnel block
wantControlUpdate: true,
},
}
for _, tt := range tests {
@ -5256,7 +5302,7 @@ func TestUpdateIngressLocked(t *testing.T) {
})()
was := b.goTracker.StartedGoroutines()
b.updateIngressLocked()
b.updateIngressAndServiceHashLocked(prefs)
if tt.hi != nil {
if tt.hi.IngressEnabled != tt.wantIngress {
@ -5265,6 +5311,10 @@ func TestUpdateIngressLocked(t *testing.T) {
if tt.hi.WireIngress != tt.wantWireIngress {
t.Errorf("WireIngress = %v, want %v", tt.hi.WireIngress, tt.wantWireIngress)
}
svcHash := b.vipServiceHash(b.vipServicesFromPrefsLocked(prefs))
if tt.hi.ServicesHash != svcHash {
t.Errorf("ServicesHash = %v, want %v", tt.hi.ServicesHash, svcHash)
}
}
startedGoroutine := b.goTracker.StartedGoroutines() != was