// SPDX-License-Identifier: Apache-2.0
// Copyright Authors of Cilium

package defaults

import (
	"time"
)

const (
	// AgentHealthPort is the default value for option.AgentHealthPort
	AgentHealthPort = 9879

	// ClusterHealthPort is the default value for option.ClusterHealthPort
	ClusterHealthPort = 4240

	// ClusterMeshHealthPort is the default value for option.ClusterMeshHealthPort
	ClusterMeshHealthPort = 80

	// EnableGops is the default value for option.EnableGops
	EnableGops = true

	// GopsPortAgent is the default value for option.GopsPort in the agent
	GopsPortAgent = 9890

	// GopsPortOperator is the default value for option.GopsPort in the operator
	GopsPortOperator = 9891

	// GopsPortApiserver is the default value for option.GopsPort in the apiserver
	GopsPortApiserver = 9892

	// GopsPortKVStoreMesh is the default value for option.GopsPort in kvstoremesh
	GopsPortKVStoreMesh = 9894

	// IPv6ClusterAllocCIDR is the default value for option.IPv6ClusterAllocCIDR
	IPv6ClusterAllocCIDR = IPv6ClusterAllocCIDRBase + "/64"

	// IPv6ClusterAllocCIDRBase is the default base for IPv6ClusterAllocCIDR
	IPv6ClusterAllocCIDRBase = "f00d::"

	// IPv6NAT46x64CIDR is the default prefix for NAT46x64 gateway
	IPv6NAT46x64CIDR = IPv6NAT46x64CIDRBase + "/96"

	// IPv6NAT46x64CIDRBase is the default base for IPv6NAT46x64CIDR
	IPv6NAT46x64CIDRBase = "64:ff9b::"

	// RuntimePath is the default path to the runtime directory
	RuntimePath = "/var/run/cilium"

	// RuntimePathRights are the default access rights of the RuntimePath directory
	RuntimePathRights = 0775

	// StateDirRights are the default access rights of the state directory
	StateDirRights = 0770

	// StateDir is the default path for the state directory relative to RuntimePath
	StateDir = "state"

	// TemplatesDir is the default path for the compiled template objects relative to StateDir
	TemplatesDir = "templates"

	// TemplateIDPath is the name of a file which contains the ID (aka hash) of
	// the template used by the endpoint.
	TemplateIDPath = "template.txt"

	// BpfDir is the default path for template files relative to LibDir
	BpfDir = "bpf"

	// LibraryPath is the default path to the cilium libraries directory
	LibraryPath = "/var/lib/cilium"

	// SockPath is the path to the UNIX domain socket exposing the API to clients locally
	SockPath = RuntimePath + "/cilium.sock"

	// SockPathEnv is the environment variable to overwrite SockPath
	SockPathEnv = "CILIUM_SOCK"

	// ShellSockPath is the path to the UNIX domain socket exposing the debug shell
	// to which "cilium-dbg shell" connects to.
	ShellSockPath = RuntimePath + "/shell.sock"

	// MonitorSockPath1_2 is the path to the UNIX domain socket used to
	// distribute BPF and agent events to listeners.
	// This is the 1.2 protocol version.
	MonitorSockPath1_2 = RuntimePath + "/monitor1_2.sock"

	// PidFilePath is the path to the pid file for the agent.
	PidFilePath = RuntimePath + "/cilium.pid"

	// DeletionQueueDir is the directory used for the CNI plugin to queue deletion requests
	// if the agent is down
	DeleteQueueDir = RuntimePath + "/deleteQueue"

	// DeleteQueueLockfile is the file used to synchronize access of the queue directory between
	// the agent and the CNI plugin processes
	DeleteQueueLockfile = DeleteQueueDir + "/lockfile"

	// BPFFSRoot is the default path where BPFFS should be mounted
	BPFFSRoot = "/sys/fs/bpf"

	// BPFFSRootFallback is the path which is used when /sys/fs/bpf has
	// a mount, but with the other filesystem than BPFFS.
	BPFFSRootFallback = "/run/cilium/bpffs"

	// TCGlobalsPath is the default prefix for all BPF maps.
	TCGlobalsPath = "tc/globals"

	// DefaultCgroupRoot is the default path where cilium cgroup2 should be mounted
	DefaultCgroupRoot = "/run/cilium/cgroupv2"

	// FQDNRegexCompileLRUSize defines the maximum size for the FQDN regex
	// compilation LRU used by the DNS proxy and policy validation.
	FQDNRegexCompileLRUSize = 1024

	// ToFQDNsMinTTL is the default lower bound for TTLs used with ToFQDNs rules.
	// This is used in DaemonConfig.Populate
	ToFQDNsMinTTL = 0

	// ToFQDNsMaxIPsPerHost defines the maximum number of IPs to maintain
	// for each FQDN name in an endpoint's FQDN cache
	ToFQDNsMaxIPsPerHost = 1000

	// ToFQDNsMaxDeferredConnectionDeletes Maximum number of IPs to retain for
	// expired DNS lookups with still-active connections
	ToFQDNsMaxDeferredConnectionDeletes = 10000

	// ToFQDNsIdleConnectionGracePeriod Time during which idle but
	// previously active connections with expired DNS lookups are
	// still considered alive
	ToFQDNsIdleConnectionGracePeriod = 0 * time.Second

	// FQDNProxyResponseMaxDelay The maximum time the DNS proxy holds an allowed
	// DNS response before sending it along. Responses are sent as soon as the
	// datapath is updated with the new IP information.
	FQDNProxyResponseMaxDelay = 100 * time.Millisecond

	// ToFQDNsPreCache is a path to a file with DNS cache data to insert into the
	// global cache on startup.
	// The file is not re-read after agent start.
	ToFQDNsPreCache = ""

	// DNSProxyEnableTransparentMode enables transparent mode for the DNS proxy.
	DNSProxyEnableTransparentMode = false

	// DNSProxyLockCount is the default array size containing mutexes which protect
	// against parallel handling of DNS response names.
	DNSProxyLockCount = 131

	// DNSProxyLockTimeout is the default timeout when acquiring the locks controlled by
	// DNSProxyLockCount.
	DNSProxyLockTimeout = 500 * time.Millisecond

	// DNSProxySocketLingerTimeout defines how many seconds we wait for the connection
	// between the DNS proxy and the upstream server to be closed.
	DNSProxySocketLingerTimeout = 10

	// IdentityChangeGracePeriod is the default value for
	// option.IdentityChangeGracePeriod
	IdentityChangeGracePeriod = 5 * time.Second

	// CiliumIdentityMaxJitter is the maximum duration to delay processing a CiliumIdentity under certain conditions.
	CiliumIdentityMaxJitter = 30 * time.Second

	// IdentityRestoreGracePeriodKvstore is the default value for
	// option.IdentityRestoreGracePeriod when kvstore is enabled.
	IdentityRestoreGracePeriodKvstore = 10 * time.Minute

	// IdentityRestoreGracePeriodKvstore is the default value for
	// option.IdentityRestoreGracePeriod when only k8s is in use
	IdentityRestoreGracePeriodK8s = 30 * time.Second

	// ExecTimeout is a timeout for executing commands.
	ExecTimeout = 300 * time.Second

	// MaxInternalTimerDelay does not enforce a maximum on timer values in
	// the agent by default.
	MaxInternalTimerDelay = 0 * time.Second

	// SessionAffinityTimeoutMaxFallback defines the maximum number of seconds
	// for the session affinity timeout. See also lb{4,6}_affinity_timeout().
	SessionAffinityTimeoutMaxFallback = 0xffffff

	// EnableIPv4 is the default value for IPv4 enablement
	EnableIPv4 = true

	// EnableIPv6 is the default value for IPv6 enablement
	EnableIPv6 = true

	// EnableIPv6NDP is the default value for IPv6 NDP support enablement
	EnableIPv6NDP = false

	// EnableSRv6 is the default value for the SRv6 support enablement.
	EnableSRv6 = false

	// SRv6EncapMode is the encapsulation mode for SRv6.
	SRv6EncapMode = "reduced"

	// EnableSCTP is the default value for SCTP support enablement
	EnableSCTP = false

	// EnableL7Proxy is the default value for L7 proxy enablement
	EnableL7Proxy = true

	// EnableHostLegacyRouting is the default value for using the old routing path via stack.
	EnableHostLegacyRouting = false

	// PreAllocateMaps is the default value for BPF map preallocation
	PreAllocateMaps = true

	// EncryptNode enables encrypting traffic from host networking applications
	// which are not part of Cilium manged pods.
	EncryptNode = false

	// MonitorQueueSizePerCPU is the default value for the monitor queue
	// size per CPU
	MonitorQueueSizePerCPU = 1024

	// MonitorQueueSizePerCPUMaximum is the maximum value for the monitor
	// queue size when derived from the number of CPUs
	MonitorQueueSizePerCPUMaximum = 16384

	// NodeInitTimeout is the time the agent is waiting until giving up to
	// initialize the local node with the kvstore
	NodeInitTimeout = 15 * time.Minute

	// ClientConnectTimeout is the time the cilium-agent client is
	// (optionally) waiting before returning an error.
	ClientConnectTimeout = 30 * time.Second

	// DatapathMode is the default value for the datapath mode.
	DatapathMode = "veth"

	// EnableBPFTProxy is the default value for EnableBPFTProxy
	EnableBPFTProxy = false

	// EnableLocalNodeRoute default value for EnableLocalNodeRoute
	EnableLocalNodeRoute = true

	// EnableAutoDirectRouting is the default value for EnableAutoDirectRouting
	EnableAutoDirectRouting = false

	// EnableDirectRoutingSkipUnreachable is the default value for EnableDirectRoutingIgnoreUnreachableName
	EnableDirectRoutingSkipUnreachable = false

	// EnableHealthChecking is the default value for EnableHealthChecking
	EnableHealthChecking = true

	// EnableEndpointHealthChecking is the default value for
	// EnableEndpointHealthChecking
	EnableEndpointHealthChecking = true

	// EnableHealthCheckLoadBalancerIP is the default value for
	// EnableHealthCheckLoadBalancerIP
	EnableHealthCheckLoadBalancerIP = false

	// HealthCheckICMPFailureThreshold is the default value for HealthCheckICMPFailureThreshold
	HealthCheckICMPFailureThreshold = 3

	// AlignCheckerName is the BPF object name for the alignchecker.
	AlignCheckerName = "bpf_alignchecker.o"

	// KVStoreStaleLockTimeout is the timeout for when a lock is held for
	// a kvstore path for too long.
	KVStoreStaleLockTimeout = 30 * time.Second

	// KVstoreQPS is default rate limit for kv store operations
	KVstoreQPS = 20

	// EndpointQueueSize is the default queue size for an endpoint.
	EndpointQueueSize = 25

	// K8sSyncTimeout specifies the default time to wait after the last event
	// of a Kubernetes resource type before timing out while waiting for synchronization.
	K8sSyncTimeout = 3 * time.Minute

	// AllocatorListTimeout specifies the standard time to allow for listing
	// initial allocator state from kvstore before exiting.
	AllocatorListTimeout = 3 * time.Minute

	// ConntrackGCMaxLRUInterval is the maximum conntrack GC interval when using LRU maps
	ConntrackGCMaxLRUInterval = 12 * time.Hour

	// ConntrackGCMinInterval is the minimum conntrack GC interval
	ConntrackGCMinInterval = 10 * time.Second

	// ConntrackGCStartingInterval is the default starting interval for
	// connection tracking garbage collection
	ConntrackGCStartingInterval = 5 * time.Minute

	// ServiceLoopbackIPv4 is the default address for service loopback
	ServiceLoopbackIPv4 = "169.254.42.1"

	// ServiceLoopbackIPv6 is the default address for service loopback
	ServiceLoopbackIPv6 = "fe80::1"

	// EnableEndpointRoutes is the value for option.EnableEndpointRoutes.
	// It is disabled by default for backwards compatibility.
	EnableEndpointRoutes = false

	// AnnotateK8sNode is the default value for option.AnnotateK8sNode. It is
	// disabled by default to annotate kubernetes node and can be enabled using
	// the provided option.
	AnnotateK8sNode = false

	// MonitorBufferPages is the default number of pages to use for the
	// ring buffer interacting with the kernel
	MonitorBufferPages = 64

	// NodeDeleteDelay is the delay before an unreliable node delete is
	// handled. During this delay, the node can re-appear and the delete
	// event is ignored.
	NodeDeleteDelay = 30 * time.Second

	// KVstoreLeaseTTL is the time-to-live of the kvstore lease.
	KVstoreLeaseTTL = 15 * time.Minute

	// KVstoreMaxConsecutiveQuorumErrors is the maximum number of acceptable
	// kvstore consecutive quorum errors before the agent assumes permanent failure
	KVstoreMaxConsecutiveQuorumErrors = 2

	// LockLeaseTTL is the time-to-live of the lease dedicated for locks of Kvstore.
	LockLeaseTTL = 25 * time.Second

	// KVstoreLeaseMaxTTL is the upper bound for KVStore lease TTL value.
	// It is calculated as Min(int64 positive max, etcd MaxLeaseTTL)
	KVstoreLeaseMaxTTL = 86400 * time.Second

	// IPAMPreAllocation is the default value for
	// CiliumNode.Spec.IPAM.PreAllocate if no value is set
	IPAMPreAllocation = 8

	// IPAMDefaultIPPool is the default value for the multi-pool default pool name.
	IPAMDefaultIPPool = "default"

	// ENIFirstInterfaceIndex is the default value for
	// CiliumNode.Spec.ENI.FirstInterfaceIndex if no value is set.
	ENIFirstInterfaceIndex = 0

	// UseENIPrimaryAddress is the default value for
	// CiliumNode.Spec.ENI.UsePrimaryAddress if no value is set.
	UseENIPrimaryAddress = false

	// ENIDisableNodeLevelPD  is the default value for
	// CiliumNode.Spec.ENI.DisablePrefixDelegation if no value is set.
	ENIDisableNodeLevelPD = false

	// ENIGarbageCollectionTagManagedName is part of the ENIGarbageCollectionTags default tag set
	ENIGarbageCollectionTagManagedName = "io.cilium/cilium-managed"

	// ENIGarbageCollectionTagManagedValue is part of the ENIGarbageCollectionTags default tag set
	ENIGarbageCollectionTagManagedValue = "true"

	// ENIGarbageCollectionTagClusterName is part of the ENIGarbageCollectionTags default tag set
	ENIGarbageCollectionTagClusterName = "io.cilium/cluster-name"

	// ENIGarbageCollectionTagClusterValue is part of the ENIGarbageCollectionTags default tag set
	ENIGarbageCollectionTagClusterValue = ClusterName

	// ENIGarbageCollectionInterval is the default interval for the ENIGarbageCollectionInterval operator flag
	ENIGarbageCollectionInterval = 5 * time.Minute

	// ENIGarbageCollectionMaxPerInterval is the maximum number of ENIs which might be garbage collected
	// per GC interval
	ENIGarbageCollectionMaxPerInterval = 25

	// AWSResultsPerApiCall is the maximum number of objects to fetch per paginated API call
	AWSResultsPerApiCall = 1000

	// ParallelAllocWorkers is the default max number of parallel workers doing allocation in the operator
	ParallelAllocWorkers = 50

	// IPAMAPIBurst is the default burst value when rate limiting access to external APIs
	IPAMAPIBurst = 20

	// IPAMAPIQPSLimit is the default QPS limit when rate limiting access to external APIs
	IPAMAPIQPSLimit = 4.0

	// AutoCreateCiliumNodeResource enables automatic creation of a
	// CiliumNode resource for the local node
	AutoCreateCiliumNodeResource = true

	// PolicyTriggerInterval is default amount of time between triggers of
	// policy updates are invoked.
	PolicyTriggerInterval = 1 * time.Second

	// K8sClientQPSLimit is the default qps for the cilium-agent k8s client.
	K8sClientQPSLimit float32 = 10.0

	// K8sClientBurst is the default burst for the cilium-agent k8s client.
	K8sClientBurst = 20

	// AllowICMPFragNeeded is the default value for option.AllowICMPFragNeeded flag.
	// It is enabled by default and directs that the ICMP Fragmentation needed type
	// packets are allowed to enable TCP Path MTU.
	AllowICMPFragNeeded = true

	// RestoreV4Addr is used as match for cilium_host v4 address
	RestoreV4Addr = "cilium.v4.internal.raw "

	// RestoreV6Addr is used as match for cilium_host v6 (router) address
	RestoreV6Addr = "cilium.v6.internal.raw "

	// CertsDirectory is the default directory used to find certificates
	// specified in the L7 policies.
	CertsDirectory = RuntimePath + "/certs"

	// IPAMExpiration is the timeout after which an IP subject to expiration
	// is being released again if no endpoint is being created in time.
	IPAMExpiration = 10 * time.Minute

	// EnableIPv4FragmentsTracking enables IPv4 fragments tracking for
	// L4-based lookups
	EnableIPv4FragmentsTracking = true

	// EnableIPv6FragmentsTracking enables IPv6 fragments tracking for
	// L4-based lookups
	EnableIPv6FragmentsTracking = true

	// FragmentsMapEntries is the default number of entries allowed in an
	// the map used to track datagram fragments.
	FragmentsMapEntries = 8192

	// K8sEnableAPIDiscovery defines whether Kubernetes API groups and
	// resources should be probed using the discovery API
	K8sEnableAPIDiscovery = false

	// EnableIdentityMark enables setting identity in mark field of packet
	// for local traffic
	EnableIdentityMark = true

	// K8sEnableLeasesFallbackDiscovery enables k8s to fallback to API probing to check
	// for the support of Leases in Kubernetes when there is an error in discovering
	// API groups using Discovery API.
	K8sEnableLeasesFallbackDiscovery = false

	// InstallNoConntrackRules instructs Cilium to install Iptables rules to skip netfilter connection tracking on all pod traffic.
	InstallNoConntrackIptRules = false

	// ContainerIPLocalReservedPortsAuto instructs the Cilium CNI plugin to reserve
	// an auto-generated list of ports in the container network namespace
	ContainerIPLocalReservedPortsAuto = "auto"

	// EnableICMPRules enables ICMP-based rule support for Cilium Network Policies.
	EnableICMPRules = true

	// RoutingMode enables choosing between native routing mode or tunneling mode.
	RoutingMode = "tunnel"

	// TunnelProtocol is the default tunneling protocol
	TunnelProtocol = "vxlan"

	// TunnelSourcePortRange specifies the default tunnel source port range. Both
	// zero means that we rely on the kernel driver defaults.
	TunnelSourcePortRange = "0-0"

	// UnderlayProtocol is the default IP family for the underlay.
	UnderlayProtocol = "ipv4"

	// ServiceNoBackendResponse is the default response for services without backends
	ServiceNoBackendResponse = "reject"

	// TracePayloadLen is the default length of payload to capture when tracing native packets.
	// The value is aligned to 2 cache-lines (64B each):
	// - decreasing below 64B would not be enough for decoding typical headers
	// - any value between 64B-128B would still require access to 2 cache-lines
	TracePayloadLen = 128

	// TracePayloadLenOverlay is the default length of payload to capture when tracing overlay packets.
	// The above TracePayloadLen might not be enough, resulting in a decode error for packets:
	// - TCPv6 with options over VXLANv4 (>=134B) -- decode error
	// - TCPv6 with SRv6 segments (>=136B) -- decode error
	// - {ICMP,UDP,TCP}v6 over (future) VXLANv6 (>=132B) -- decode error
	// The value is aligned to 3 cache-lines, see above comment in TracePayloadLen.
	TracePayloadLenOverlay = 192

	// PolicyDenyResponse is the default action for pod egress network policy denials (drop packets silently)
	PolicyDenyResponse = "none"

	// TunnelPortVXLAN is the default VXLAN port
	TunnelPortVXLAN uint16 = 8472
	// TunnelPortGeneve is the default Geneve port
	TunnelPortGeneve uint16 = 6081

	// EnableVTEP enables VXLAN Tunnel Endpoint (VTEP) Integration
	EnableVTEP     = false
	MaxVTEPDevices = 8

	// Enable BGP control plane features.
	EnableBGPControlPlane = false

	// EnableK8sNetworkPolicy enables support for K8s NetworkPolicy.
	EnableK8sNetworkPolicy = true

	// EnableCiliumNetworkPolicy enables support for Cilium Network Policy.
	EnableCiliumNetworkPolicy = true

	// EnableCiliumClusterwideNetworkPolicy enables support for Cilium Clusterwide
	// Network Policy.
	EnableCiliumClusterwideNetworkPolicy = true

	// MaxConnectedClusters sets the maximum number of clusters that can be
	// connected in a clustermesh.
	// The value is used to determine the bit allocation for cluster ID and
	// identity in a numeric identity. Values > 255 will decrease the number of
	// allocatable identities.
	MaxConnectedClusters = 255

	// EnableNodeSelectorLabels is the default value for option.EnableNodeSelectorLabels
	EnableNodeSelectorLabels = false

	// BPFDistributedLRU enables per-CPU distributed backend memory
	BPFDistributedLRU = false

	// BPFEventsDropEnabled controls whether the Cilium datapath exposes "drop" events to Cilium monitor and Hubble.
	BPFEventsDropEnabled = true

	// BPFEventsPolicyVerdictEnabled controls whether the Cilium datapath exposes "policy verdict" events to Cilium monitor and Hubble.
	BPFEventsPolicyVerdictEnabled = true

	// BPFEventsTraceEnabled controls whether the Cilium datapath exposes "trace" events to Cilium monitor and Hubble.
	BPFEventsTraceEnabled = true

	// BPFConntrackAccounting controls whether CT accounting for packets and bytes is enabled
	BPFConntrackAccounting = false

	// EnableEnvoyConfig is the default value for option.EnableEnvoyConfig
	EnableEnvoyConfig = false

	// NetNsPath is the default path to the mounted network namespaces directory
	NetNsPath = "/var/run/cilium/netns"

	// EnableNonDefaultDenyPolicies allows policies to define whether they are operating in default-deny mode
	EnableNonDefaultDenyPolicies = true

	// EnableSourceIPVerification is the default value for source ip validation
	EnableSourceIPVerification = true

	// ConnectivityProbeFrequencyRatio is the default connectivity probe frequency
	ConnectivityProbeFrequencyRatio = 0.5

	// EnableExtendedIPProtocols controls whether traffic with extended IP protocols is supported in datapath.
	EnableExtendedIPProtocols = false

	// IPTracingOptionType is the default value for option.IPTracingOptionType
	IPTracingOptionType = 0
)

var (
	// BPFEventBufferConfigs contains default configuration entries for bpf map event buffers.
	// These are to be merged with the client configuration to create the final config.
	// Note: The TTL corresponds to GC interval times, which is a somewhat expensive operation.
	// Under the worst case GC may need to memcopy almost the entire buffer, which will
	// cause memory spikes. Be mindful of this when increasing the default buffer configurations.
	BPFEventBufferConfigs = map[string]string{
		"cilium_lxc": "enabled_128_0",
		// cilium_ipcache is likely the most useful use of this feature, but also has
		// the highest churn.
		"cilium_ipcache_v2":        "enabled_1024_0",
		"cilium_lb_affinity_match": "enabled_128_0",

		// ip4
		"cilium_lb4_services_v2":    "enabled_128_0",
		"cilium_lb4_backends_v2":    "enabled_128_0",
		"cilium_lb4_reverse_nat":    "enabled_128_0",
		"cilium_lb4_backends_v3":    "enabled_128_0",
		"cilium_lb4_source_range":   "enabled_128_0",
		"cilium_lb4_affinity_match": "enabled_128_0",

		// ip6
		"cilium_lb6_services_v2":    "enabled_128_0",
		"cilium_lb6_backends_v2":    "enabled_128_0",
		"cilium_lb6_reverse_nat":    "enabled_128_0",
		"cilium_lb6_backends_v3":    "enabled_128_0",
		"cilium_lb6_source_range":   "enabled_128_0",
		"cilium_lb6_affinity_match": "enabled_128_0",
	}

	PolicyCIDRMatchMode = []string{}
)
