reschedule the reconcile loop when DOCA PCC process dies

We need to restart the PCC and reapply its params

Signed-off-by: Alexander Maslennikov <amaslennikov@nvidia.com>
(cherry picked from commit 9f5de2e)

Author: almaslennikov

internal/controller/nicdevice_controller.go

@@ -40,6 +40,7 @@ import (
 	"sigs.k8s.io/controller-runtime/pkg/handler"
 	"sigs.k8s.io/controller-runtime/pkg/log"
 	"sigs.k8s.io/controller-runtime/pkg/reconcile"
+	"sigs.k8s.io/controller-runtime/pkg/source"
 
 	v1alpha1 "github.com/Mellanox/nic-configuration-operator/api/v1alpha1"
 	"github.com/Mellanox/nic-configuration-operator/pkg/configuration"
@@ -923,9 +924,25 @@ func (r *NicDeviceReconciler) SetupWithManager(mgr ctrl.Manager, watchForMainten
 		},
 	}
 
+	// Bridge CC termination channel (plain Go channel from k8s-free package) into controller events
+	ccTermChan := r.SpectrumXManager.GetCCTerminationChannel()
+	ccEventChan := make(chan event.TypedGenericEvent[*v1alpha1.NicDevice], 10)
+	go func() {
+		for rdmaIface := range ccTermChan {
+			log.Log.Info("CC process terminated, triggering reconcile", "rdma", rdmaIface)
+			ccEventChan <- event.TypedGenericEvent[*v1alpha1.NicDevice]{}
+		}
+	}()
+
 	controller := ctrl.NewControllerManagedBy(mgr).
 		For(&v1alpha1.NicDevice{}).
-		Watches(&v1alpha1.NicDevice{}, nicDeviceEventHandler)
+		Watches(&v1alpha1.NicDevice{}, nicDeviceEventHandler).
+		WatchesRawSource(source.Channel(ccEventChan, handler.TypedFuncs[*v1alpha1.NicDevice, reconcile.Request]{
+			GenericFunc: func(ctx context.Context, e event.TypedGenericEvent[*v1alpha1.NicDevice], q workqueue.TypedRateLimitingInterface[reconcile.Request]) {
+				log.Log.Info("Enqueuing sync for CC termination event")
+				qHandler(q)
+			},
+		}))
 
 	if watchForMaintenance {
 		controller.Watches(&maintenanceoperator.NodeMaintenance{}, maintenance.GetMaintenanceRequestEventHandler(r.NodeName, qHandler))

internal/controller/nicdevice_controller_test.go

@@ -61,6 +61,7 @@ var _ = Describe("NicDeviceReconciler", func() {
 		spectrumXManager     *spectrumxMocks.SpectrumXManager
 		udevManager          *udevMocks.UdevManager
 		deviceDiscoveryUtils *devicediscoveryMocks.DeviceDiscoveryUtils
+		ccTerminationChan    chan string
 		deviceName           = "test-device"
 		ctx                  context.Context
 		cancel               context.CancelFunc
@@ -96,6 +97,8 @@ var _ = Describe("NicDeviceReconciler", func() {
 		maintenanceManager = &maintenanceMocks.MaintenanceManager{}
 		hostUtils = &hostMocks.HostUtils{}
 		spectrumXManager = &spectrumxMocks.SpectrumXManager{}
+		ccTerminationChan = make(chan string, 10)
+		spectrumXManager.On("GetCCTerminationChannel").Return((<-chan string)(ccTerminationChan))
 		spectrumXManager.On("GetDocaCCTargetVersion", mock.Anything).Return("", nil)
 		udevManager = &udevMocks.UdevManager{}
 		udevManager.On("ApplyUdevRules", mock.Anything, mock.Anything).Return(nil, false, nil)
@@ -1382,4 +1385,48 @@ var _ = Describe("NicDeviceReconciler", func() {
 			}, time.Second*2).Should(BeFalse())
 		})
 	})
+
+	Describe("reconcile triggered by CC process termination", func() {
+		It("Should re-reconcile when CC termination channel fires", func() {
+			configurationManager.On("ValidateDeviceNvSpec", mock.Anything, mock.Anything).Return(false, false, nil)
+			configurationManager.On("ApplyDeviceRuntimeSpec", mock.Anything).Return(nil)
+			maintenanceManager.On("ReleaseMaintenance", mock.Anything).Return(nil)
+
+			device := &v1alpha1.NicDevice{
+				ObjectMeta: metav1.ObjectMeta{Name: deviceName, Namespace: namespaceName},
+				Spec: v1alpha1.NicDeviceSpec{
+					Configuration: &v1alpha1.NicDeviceConfigurationSpec{
+						ResetToDefault: false,
+						Template: &v1alpha1.ConfigurationTemplateSpec{
+							NumVfs:   4,
+							LinkType: consts.Ethernet,
+						},
+					},
+				},
+			}
+			Expect(k8sClient.Create(ctx, device))
+			device.Status = v1alpha1.NicDeviceStatus{
+				Node:  nodeName,
+				Ports: []v1alpha1.NicDevicePortSpec{{PCI: "0000:3b:00.0"}},
+			}
+			Expect(k8sClient.Status().Update(ctx, device)).To(Succeed())
+
+			// Wait for initial reconcile to complete successfully
+			Eventually(getDeviceConditions, timeout).Should(testutils.MatchCondition(metav1.Condition{
+				Type:   consts.ConfigUpdateInProgressCondition,
+				Status: metav1.ConditionFalse,
+				Reason: consts.UpdateSuccessfulReason,
+			}))
+
+			initialCallCount := countCalls(configurationManager.Calls, "ApplyDeviceRuntimeSpec")
+
+			// Simulate CC process termination
+			ccTerminationChan <- "mlx5_0"
+
+			// Verify reconcile ran again
+			Eventually(func() int {
+				return countCalls(configurationManager.Calls, "ApplyDeviceRuntimeSpec")
+			}, timeout).Should(BeNumerically(">", initialCallCount))
+		})
+	})
 })

internal/controller/utils_test.go

@@ -19,6 +19,7 @@ import (
 	"context"
 	"sync"
 
+	"github.com/stretchr/testify/mock"
 	v1 "k8s.io/api/core/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/util/rand"
@@ -84,3 +85,13 @@ func startManager(manager manager.Manager, ctx context.Context, wg *sync.WaitGro
 
 	log.Log.Info("synced manager cache for test", "test", GinkgoT().Name())
 }
+
+func countCalls(calls []mock.Call, method string) int {
+	count := 0
+	for _, call := range calls {
+		if call.Method == method {
+			count++
+		}
+	}
+	return count
+}

pkg/spectrumx/mocks/SpectrumXManager.go

@@ -62,6 +62,9 @@ type SpectrumXManager interface {
 	GetDocaCCTargetVersion(device *v1alpha1.NicDevice) (string, error)
 	// RunDocaSpcXCC launches and keeps track of the DOCA SPC-X CC process for the given port
 	RunDocaSpcXCC(port v1alpha1.NicDevicePortSpec) error
+	// GetCCTerminationChannel returns a read-only channel that receives the RDMA interface name
+	// when a DOCA SPC-X CC process terminates unexpectedly after startup
+	GetCCTerminationChannel() <-chan string
 }
 
 type spectrumXConfigManager struct {
@@ -70,14 +73,16 @@ type spectrumXConfigManager struct {
 	execInterface    execUtils.Interface
 	nvConfigUtils    nvconfig.NVConfigUtils
 
-	ccProcesses map[string]*ccProcess
+	ccProcesses       map[string]*ccProcess
+	ccTerminationChan chan string // buffered; carries RDMA iface name on unexpected exit
 }
 
 type ccProcess struct {
 	port v1alpha1.NicDevicePortSpec
 	cmd  execUtils.Cmd
 
-	running atomic.Bool
+	running            atomic.Bool
+	startupCheckPassed atomic.Bool // set after the 3s startup window; distinguishes startup failures from runtime crashes
 
 	// Error handling with mutex protection
 	errMutex sync.RWMutex
@@ -704,6 +709,16 @@ func (m *spectrumXConfigManager) RunDocaSpcXCC(port v1alpha1.NicDevicePortSpec)
 
 		log.Log.V(2).Info("SpectrumXConfigManager.RunDocaSpcXCC(): CC process output", "rdma", port.RdmaInterface, "output", string(output))
 		process.running.Store(false)
+
+		// Notify controller only for runtime crashes (after startup check passed)
+		if process.startupCheckPassed.Load() {
+			log.Log.Info("SpectrumXConfigManager.RunDocaSpcXCC(): CC process terminated unexpectedly, sending notification", "rdma", port.RdmaInterface)
+			select {
+			case m.ccTerminationChan <- port.RdmaInterface:
+			default:
+				log.Log.V(2).Info("SpectrumXConfigManager.RunDocaSpcXCC(): termination channel full, notification dropped", "rdma", port.RdmaInterface)
+			}
+		}
 	}()
 
 	log.Log.V(2).Info("Waiting 3s for DOCA SPC-X CC to start", "rdma", port.RdmaInterface)
@@ -723,19 +738,27 @@ func (m *spectrumXConfigManager) RunDocaSpcXCC(port v1alpha1.NicDevicePortSpec)
 
 	log.Log.V(2).Info("DOCA SPC-X CC process started", "rdma", port.RdmaInterface)
 
+	process.startupCheckPassed.Store(true)
 	m.ccProcesses[port.RdmaInterface] = process
 
 	log.Log.Info("Started DOCA SPC-X CC process", "rdma", port.RdmaInterface)
 
 	return nil
 }
 
+// GetCCTerminationChannel returns a read-only channel for CC process termination notifications.
+// The channel carries the RDMA interface name of the terminated CC process.
+func (m *spectrumXConfigManager) GetCCTerminationChannel() <-chan string {
+	return m.ccTerminationChan
+}
+
 func NewSpectrumXConfigManager(dmsManager dms.DMSManager, spectrumXConfigs map[string]*types.SpectrumXConfig) SpectrumXManager {
 	return &spectrumXConfigManager{
-		dmsManager:       dmsManager,
-		spectrumXConfigs: spectrumXConfigs,
-		execInterface:    execUtils.New(),
-		nvConfigUtils:    nvconfig.NewNVConfigUtils(),
-		ccProcesses:      make(map[string]*ccProcess),
+		dmsManager:        dmsManager,
+		spectrumXConfigs:  spectrumXConfigs,
+		execInterface:     execUtils.New(),
+		nvConfigUtils:     nvconfig.NewNVConfigUtils(),
+		ccProcesses:       make(map[string]*ccProcess),
+		ccTerminationChan: make(chan string, 10),
 	}
 }

pkg/spectrumx/spectrumx.go

@@ -178,11 +178,12 @@ var _ = Describe("SpectrumXConfigManager", func() {
 		}
 
 		manager = &spectrumXConfigManager{
-			dmsManager:       &dmsMgr,
-			spectrumXConfigs: cfgs,
-			execInterface:    execFake,
-			nvConfigUtils:    &nvConfigMgr,
-			ccProcesses:      map[string]*ccProcess{},
+			dmsManager:        &dmsMgr,
+			spectrumXConfigs:  cfgs,
+			execInterface:     execFake,
+			nvConfigUtils:     &nvConfigMgr,
+			ccProcesses:       map[string]*ccProcess{},
+			ccTerminationChan: make(chan string, 10),
 		}
 
 		beforeDevice()
@@ -413,6 +414,34 @@ var _ = Describe("SpectrumXConfigManager", func() {
 			Expect(err).To(HaveOccurred())
 			Expect(strings.ToLower(err.Error())).To(ContainSubstring("failed to start"))
 		})
+
+		It("sends notification on channel when process dies after startup", func() {
+			// fakeCmd with 4s delay survives the 3s startup check, then fails
+			nextCmd = &fakeCmd{output: []byte(""), err: errors.New("runtime crash"), delay: 4 * time.Second}
+			port := device.Status.Ports[0]
+			err := manager.RunDocaSpcXCC(port)
+			Expect(err).NotTo(HaveOccurred())
+			Expect(manager.ccProcesses).To(HaveKey(port.RdmaInterface))
+
+			// Wait for process to die and notification to fire
+			Eventually(manager.GetCCTerminationChannel(), 5*time.Second).Should(Receive(Equal(port.RdmaInterface)))
+		})
+
+		It("does NOT send notification when process fails during startup", func() {
+			nextCmd = &fakeCmd{output: []byte(""), err: errors.New("startup failure")}
+			port := device.Status.Ports[0]
+			err := manager.RunDocaSpcXCC(port)
+			Expect(err).To(HaveOccurred())
+
+			Consistently(manager.GetCCTerminationChannel(), 1*time.Second).ShouldNot(Receive())
+		})
+	})
+
+	Describe("GetCCTerminationChannel", func() {
+		It("returns the termination channel", func() {
+			ch := manager.GetCCTerminationChannel()
+			Expect(ch).NotTo(BeNil())
+		})
 	})
 
 	Describe("BreakoutConfigApplied", func() {

pkg/spectrumx/spectrumx_test.go

@@ -41,8 +41,7 @@ var _ = Describe("LoadSpectrumXConfig", func() {
 
 		first := cfg.NVConfig[0]
 		Expect(first.Name).ToNot(BeEmpty())
-		Expect(first.DMSPath).ToNot(BeEmpty())
-		Expect(first.ValueType).ToNot(BeEmpty())
+		Expect(first.MlxConfig).ToNot(BeEmpty())
 
 		Expect(cfg.UseSoftwareCCAlgorithm).To(BeTrue())
 		Expect(cfg.RuntimeConfig.AdaptiveRouting).ToNot(BeEmpty())