nfqdatapath

Documentation

Index

• Constants
• Variables
• func MyCounterMatcher(x interface{}) gomock.Matcher
• func MyMatcher(x interface{}) gomock.Matcher
• func PacketEventMatcher(x interface{}) gomock.Matcher
• type Accessor
• type ContextProcessor
• type Datapath
  • func New(mutualAuth bool, filterQueue *fqconfig.FilterQueue, ...) *Datapath
  • func NewWithDefaults(serverID string, collector collector.EventCollector, ...) *Datapath
  • func (d *Datapath) CleanUp() error
  • func (d *Datapath) EnableDatapathPacketTracing(contextID string, direction packettracing.TracingDirection, ...) error
  • func (d *Datapath) EnableIPTablesPacketTracing(ctx context.Context, contextID string, interval time.Duration) error
  • func (d *Datapath) Enforce(contextID string, puInfo *policy.PUInfo) error
  • func (d *Datapath) GetFilterQueue() *fqconfig.FilterQueue
  • func (d *Datapath) PacketLogsEnabled() bool
  • func (d *Datapath) ProcessApplicationUDPPacket(p *packet.Packet) (conn *connection.UDPConnection, err error)
  • func (d *Datapath) ProcessNetworkUDPPacket(p *packet.Packet) (conn *connection.UDPConnection, err error)
  • func (d *Datapath) Run(ctx context.Context) error
  • func (d *Datapath) SetLogLevel(level constants.LogLevel) error
  • func (d *Datapath) SetTargetNetworks(cfg *runtime.Configuration) error
  • func (d *Datapath) Unenforce(contextID string) error
  • func (d *Datapath) UpdateSecrets(token secrets.Secrets) error
• type RuleProcessor

Constants

const DefaultExternalIPTimeout = "500ms"

DefaultExternalIPTimeout is the default used for the cache for External IPTimeout.

Variables

var GetUDPRawSocket = afinetrawsocket.CreateSocket

GetUDPRawSocket is placeholder for createSocket function. It is useful to mock tcp unit tests.

Functions

func MyCounterMatcher

func MyCounterMatcher(x interface{}) gomock.Matcher

MyCounterMatcher custom matcher for counter record

func MyMatcher

func MyMatcher(x interface{}) gomock.Matcher

MyMatcher returns gomock matcher

func PacketEventMatcher

func PacketEventMatcher(x interface{}) gomock.Matcher

PacketEventMatcher return gomock matcher

Types

type Accessor

type Accessor interface {
	ContextProcessor
	RuleProcessor
}

Accessor is an interface for datapth to access contexts/rules/tokens

type ContextProcessor

type ContextProcessor interface {
	DoesContextExist(contextID string) bool
	IsContextServer(contextID string, backendip string) bool
}

ContextProcessor is an interface to provide context checks

type Datapath

type Datapath struct {

	// CacheTimeout used for Trireme auto-detecion
	ExternalIPCacheTimeout time.Duration
	// contains filtered or unexported fields
}

Datapath is the structure holding all information about a connection filter

func New

func New(
	mutualAuth bool,
	filterQueue *fqconfig.FilterQueue,
	collector collector.EventCollector,
	serverID string,
	validity time.Duration,
	service packetprocessor.PacketProcessor,
	secrets secrets.Secrets,
	mode constants.ModeType,
	procMountPoint string,
	ExternalIPCacheTimeout time.Duration,
	packetLogs bool,
	tokenaccessor tokenaccessor.TokenAccessor,
	puFromContextID cache.DataStore,
	cfg *runtime.Configuration,
) *Datapath

New will create a new data path structure. It instantiates the data stores needed to track sessions. The data path is started with a different call. Only required parameters must be provided. Rest a pre-populated with defaults.

func NewWithDefaults

func NewWithDefaults(
	serverID string,
	collector collector.EventCollector,
	service packetprocessor.PacketProcessor,
	secrets secrets.Secrets,
	mode constants.ModeType,
	procMountPoint string,
	targetNetworks []string,
) *Datapath

NewWithDefaults create a new data path with most things used by default

func (*Datapath) CleanUp

func (d *Datapath) CleanUp() error

CleanUp implements the cleanup interface.

func (*Datapath) EnableDatapathPacketTracing

func (d *Datapath) EnableDatapathPacketTracing(contextID string, direction packettracing.TracingDirection, interval time.Duration) error

EnableDatapathPacketTracing enable nfq datapath packet tracing

func (*Datapath) EnableIPTablesPacketTracing

func (d *Datapath) EnableIPTablesPacketTracing(ctx context.Context, contextID string, interval time.Duration) error

EnableIPTablesPacketTracing enable iptables -j trace for the particular pu and is much wider packet stream.

func (*Datapath) Enforce

func (d *Datapath) Enforce(contextID string, puInfo *policy.PUInfo) error

Enforce implements the Enforce interface method and configures the data path for a new PU

func (*Datapath) GetFilterQueue

func (d *Datapath) GetFilterQueue() *fqconfig.FilterQueue

GetFilterQueue returns the filter queues used by the data path

func (*Datapath) PacketLogsEnabled

func (d *Datapath) PacketLogsEnabled() bool

PacketLogsEnabled returns true if the packet logs are enabled.

func (*Datapath) ProcessApplicationUDPPacket

func (d *Datapath) ProcessApplicationUDPPacket(p *packet.Packet) (conn *connection.UDPConnection, err error)

ProcessApplicationUDPPacket processes packets arriving from an application and are destined to the network

func (*Datapath) ProcessNetworkUDPPacket

func (d *Datapath) ProcessNetworkUDPPacket(p *packet.Packet) (conn *connection.UDPConnection, err error)

ProcessNetworkUDPPacket processes packets arriving from network and are destined to the application.

func (*Datapath) Run

func (d *Datapath) Run(ctx context.Context) error

Run starts the application and network interceptors

func (*Datapath) SetLogLevel

func (d *Datapath) SetLogLevel(level constants.LogLevel) error

SetLogLevel sets log level.

func (*Datapath) SetTargetNetworks

func (d *Datapath) SetTargetNetworks(cfg *runtime.Configuration) error

SetTargetNetworks sets new target networks used by datapath

func (*Datapath) Unenforce

func (d *Datapath) Unenforce(contextID string) error

Unenforce removes the configuration for the given PU

func (*Datapath) UpdateSecrets

func (d *Datapath) UpdateSecrets(token secrets.Secrets) error

UpdateSecrets updates the secrets used for signing communication between trireme instances

type RuleProcessor

type RuleProcessor interface {
	CheckRejectRecvRules(contextID string) (int, bool)
	CheckAcceptRecvRules(contextID string) (int, bool)
	CheckRejectTxRules(contextID string) (int, bool)
	CheckAcceptTxRules(contextID string) (int, bool)
}

RuleProcessor is an interface to access rules