bpf

package
v0.0.0-...-21cfbab Latest Latest
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This package is not in the latest version of its module.

 Go to latest Published: Apr 10, 2023 License: Apache-2.0, Apache-2.0 Imports: 33 Imported by: 0

Documentation

Overview

Package bpf provides primitives to manage Calico-specific XDP programs attached to network interfaces, along with the blocklist LPM map and the failsafe map.

It does not call the bpf() syscall itself but executes external programs like bpftool and ip.

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at 

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

Index

Constants

View Source 
const (
	ObjectDir      = "/usr/lib/calico/bpf"
	RuntimeProgDir = "/var/run/calico/bpf/prog"
	RuntimePolDir  = "/var/run/calico/bpf/policy"
)

Variables

View Source 
var Hooks = []Hook{HookIngress, HookEgress, HookXDP}

Functions

func AlreadyAttachedProg 

func AlreadyAttachedProg(a AttachPointInfo, object string, id int) (bool, error)

AlreadyAttachedProg checks that the program we are going to attach has the same parameters as what we remembered about the currently attached.

func CidrToHex 

func CidrToHex(cidr string) ([]string, error)

CidrToHex takes a CIDR in string form (e.g. "192.168.0.0/16") and outputs a string slice of hex-encoded bytes ready to be passed to bpftool.

For example, for "192.168.0.0/16":

[ 

10, 00, 00, 00,   mask in little endian order
C0, A8, 00, 00    IP address

]

func CleanAttachedProgDir 

func CleanAttachedProgDir()

CleanAttachedProgDir makes sure /var/run/calico/bpf/prog exists and removes json files related to interfaces that do not exist.

func CleanUpCalicoPins 

func CleanUpCalicoPins(dir string)

func CleanUpMaps 

func CleanUpMaps()

CleanUpMaps scans for cali_jump maps that are still pinned to the filesystem but no longer referenced by our BPF programs.

func ForgetAttachedProg 

func ForgetAttachedProg(iface string, hook Hook) error

ForgetAttachedProg removes what we store about the iface/hook program.

func ForgetIfaceAttachedProg 

func ForgetIfaceAttachedProg(iface string) error

ForgetIfaceAttachedProg removes information we store about any programs associated with an iface.

func GetMinKernelVersionForDistro 

func GetMinKernelVersionForDistro(distName string) *environment.Version

func GetMockXDPTag 

func GetMockXDPTag(bytes []byte) string

func IterMapCmdOutput 

func IterMapCmdOutput(output []byte, f func(k, v []byte)) error

IterMapCmdOutput iterates over the output of a command obtained by DumpMapCmd

func IterPerCpuMapCmdOutput 

func IterPerCpuMapCmdOutput(output []byte, f func(k, v []byte)) error

IterPerCpuMapCmdOutput iterates over the output of the dump of per-cpu map

func KTimeNanos 

func KTimeNanos() int64

KTimeNanos returns a nanosecond timestamp that is comparable with the ones generated by BPF.

func ListCalicoAttached 

func ListCalicoAttached() (map[string]EPAttachInfo, error)

ListCalicoAttached list all programs that are attached to TC or XDP and are related to Calico. That is, they have jumpmap pinned in our dir hierarchy.

func ListPerEPMaps 

func ListPerEPMaps() (map[int]string, error)

func ListTcXDPAttachedProgs 

func ListTcXDPAttachedProgs() (TcList, XDPList, error)

ListTcXDPAttachedProgs returns all programs attached to TC or XDP hooks.

func MapPinDir 

func MapPinDir(typ int, name, iface string, hook Hook) string

func MemberToIPMask 

func MemberToIPMask(member string) (*net.IP, int, error)

func PinBPFProgram 

func PinBPFProgram(fd ProgFD, filename string) error

func PolicyDebugJSONFileName 

func PolicyDebugJSONFileName(iface, polDir string, ipFamily proto.IPVersion) string

func RememberAttachedProg 

func RememberAttachedProg(a AttachPointInfo, object string, id int) error

RememberAttachedProg stores the attached programs parameters in a file.

func RuntimeJSONFilename 

func RuntimeJSONFilename(iface string, hook Hook) string

RuntimeJSONFilename returns filename where we store information about attached program. The filename is [iface name]_[hook].json, for example, eth0_egress.json

func SupportsBPFDataplane 

func SupportsBPFDataplane() error

func SupportsSockmap 

func SupportsSockmap() error

func SupportsXDP 

func SupportsXDP() error

func SyscallSupport 

func SyscallSupport() bool

Types

type AttachPointInfo 

type AttachPointInfo interface {
	IfaceName() string
	HookName() Hook
	Config() string
}

AttachPointInfo describes what we need to know about an attach point

type AttachedProgInfo 

type AttachedProgInfo struct {
	Object string `json:"object"`
	Hash   string `json:"hash"`
	ID     int    `json:"id"`
	Config string `json:"config"`
}

AttachedProgInfo describes what we store about an attached program.

type BPFDataplane 

type BPFDataplane interface {
	DumpCIDRMap(ifName string, family IPFamily) (map[CIDRMapKey]uint32, error)
	DumpFailsafeMap() ([]ProtoPort, error)
	GetCIDRMapID(ifName string, family IPFamily) (int, error)
	GetFailsafeMapID() (int, error)
	GetMapsFromXDP(ifName string) ([]int, error)
	GetXDPID(ifName string) (int, error)
	GetXDPMode(ifName string) (XDPMode, error)
	GetXDPIfaces() ([]string, error)
	GetXDPObjTag(objPath string) (string, error)
	GetXDPObjTagAuto() (string, error)
	GetXDPTag(ifName string) (string, error)
	IsValidMap(ifName string, family IPFamily) (bool, error)
	ListCIDRMaps(family IPFamily) ([]string, error)
	LoadXDP(objPath, ifName string, mode XDPMode) error
	LoadXDPAuto(ifName string, mode XDPMode) error
	LookupCIDRMap(ifName string, family IPFamily, ip net.IP, mask int) (uint32, error)
	LookupFailsafeMap(proto uint8, port uint16) (bool, error)
	NewCIDRMap(ifName string, family IPFamily) (string, error)
	NewFailsafeMap() (string, error)
	RemoveCIDRMap(ifName string, family IPFamily) error
	RemoveFailsafeMap() error
	RemoveItemCIDRMap(ifName string, family IPFamily, ip net.IP, mask int) error
	RemoveItemFailsafeMap(proto uint8, port uint16) error
	RemoveXDP(ifName string, mode XDPMode) error
	UpdateCIDRMap(ifName string, family IPFamily, ip net.IP, mask int, refCount uint32) error
	UpdateFailsafeMap(proto uint8, port uint16) error

	GetBPFCalicoDir() string
	AttachToSockmap() error
	DetachFromSockmap(mode FindObjectMode) error
	RemoveSockmap(mode FindObjectMode) error

	LoadSockops(objPath string) error
	LoadSockopsAuto() error
	RemoveSockops() error
	LoadSkMsg(objPath string) error
	LoadSkMsgAuto() error
	RemoveSkMsg() error
	AttachToCgroup() error
	DetachFromCgroup(mode FindObjectMode) error
	NewSockmapEndpointsMap() (string, error)
	NewSockmap() (string, error)
	UpdateSockmapEndpoints(ip net.IP, mask int) error
	DumpSockmapEndpointsMap(family IPFamily) ([]CIDRMapKey, error)
	LookupSockmapEndpointsMap(ip net.IP, mask int) (bool, error)
	RemoveItemSockmapEndpointsMap(ip net.IP, mask int) error
	RemoveSockmapEndpointsMap() error
	// contains filtered or unexported methods
}

type BPFLib 

type BPFLib struct {
	// contains filtered or unexported fields
}

func NewBPFLib 

func NewBPFLib(binDir string) (*BPFLib, error)

func (*BPFLib) AttachToCgroup 

func (b *BPFLib) AttachToCgroup() error

func (*BPFLib) AttachToSockmap 

func (b *BPFLib) AttachToSockmap() error

func (*BPFLib) DetachFromCgroup 

func (b *BPFLib) DetachFromCgroup(mode FindObjectMode) error

func (*BPFLib) DetachFromSockmap 

func (b *BPFLib) DetachFromSockmap(mode FindObjectMode) error

func (*BPFLib) DumpCIDRMap 

func (b *BPFLib) DumpCIDRMap(ifName string, family IPFamily) (map[CIDRMapKey]uint32, error)

func (*BPFLib) DumpFailsafeMap 

func (b *BPFLib) DumpFailsafeMap() ([]ProtoPort, error)

func (*BPFLib) DumpSockmapEndpointsMap 

func (b *BPFLib) DumpSockmapEndpointsMap(family IPFamily) ([]CIDRMapKey, error)

func (*BPFLib) GetBPFCalicoDir 

func (b *BPFLib) GetBPFCalicoDir() string

func (*BPFLib) GetCIDRMapID 

func (b *BPFLib) GetCIDRMapID(ifName string, family IPFamily) (int, error)

func (*BPFLib) GetFailsafeMapID 

func (b *BPFLib) GetFailsafeMapID() (int, error)

func (*BPFLib) GetMapsFromXDP 

func (b *BPFLib) GetMapsFromXDP(ifName string) ([]int, error)

func (*BPFLib) GetXDPID 

func (b *BPFLib) GetXDPID(ifName string) (int, error)

func (*BPFLib) GetXDPIfaces 

func (b *BPFLib) GetXDPIfaces() ([]string, error)

func (*BPFLib) GetXDPMode 

func (b *BPFLib) GetXDPMode(ifName string) (XDPMode, error)

func (*BPFLib) GetXDPObjTag 

func (b *BPFLib) GetXDPObjTag(objPath string) (tag string, err error)

func (*BPFLib) GetXDPObjTagAuto 

func (b *BPFLib) GetXDPObjTagAuto() (string, error)

func (*BPFLib) GetXDPTag 

func (b *BPFLib) GetXDPTag(ifName string) (string, error)

func (*BPFLib) IsValidMap 

func (b *BPFLib) IsValidMap(ifName string, family IPFamily) (bool, error)

func (*BPFLib) ListCIDRMaps 

func (b *BPFLib) ListCIDRMaps(family IPFamily) ([]string, error)

func (*BPFLib) LoadSkMsg 

func (b *BPFLib) LoadSkMsg(objPath string) error

func (*BPFLib) LoadSkMsgAuto 

func (b *BPFLib) LoadSkMsgAuto() error

func (*BPFLib) LoadSockops 

func (b *BPFLib) LoadSockops(objPath string) error

func (*BPFLib) LoadSockopsAuto 

func (b *BPFLib) LoadSockopsAuto() error

func (*BPFLib) LoadXDP 

func (b *BPFLib) LoadXDP(objPath, ifName string, mode XDPMode) error

func (*BPFLib) LoadXDPAuto 

func (b *BPFLib) LoadXDPAuto(ifName string, mode XDPMode) error

func (*BPFLib) LookupCIDRMap 

func (b *BPFLib) LookupCIDRMap(ifName string, family IPFamily, ip net.IP, mask int) (uint32, error)

func (*BPFLib) LookupFailsafeMap 

func (b *BPFLib) LookupFailsafeMap(proto uint8, port uint16) (bool, error)

func (*BPFLib) LookupSockmapEndpointsMap 

func (b *BPFLib) LookupSockmapEndpointsMap(ip net.IP, mask int) (bool, error)

func (*BPFLib) NewCIDRMap 

func (b *BPFLib) NewCIDRMap(ifName string, family IPFamily) (string, error)

func (*BPFLib) NewFailsafeMap 

func (b *BPFLib) NewFailsafeMap() (string, error)

func (*BPFLib) NewSockmap 

func (b *BPFLib) NewSockmap() (string, error)

func (*BPFLib) NewSockmapEndpointsMap 

func (b *BPFLib) NewSockmapEndpointsMap() (string, error)

func (*BPFLib) RemoveCIDRMap 

func (b *BPFLib) RemoveCIDRMap(ifName string, family IPFamily) error

func (*BPFLib) RemoveFailsafeMap 

func (b *BPFLib) RemoveFailsafeMap() error

func (*BPFLib) RemoveItemCIDRMap 

func (b *BPFLib) RemoveItemCIDRMap(ifName string, family IPFamily, ip net.IP, mask int) error

func (*BPFLib) RemoveItemFailsafeMap 

func (b *BPFLib) RemoveItemFailsafeMap(proto uint8, port uint16) error

func (*BPFLib) RemoveItemSockmapEndpointsMap 

func (b *BPFLib) RemoveItemSockmapEndpointsMap(ip net.IP, mask int) error

func (*BPFLib) RemoveSkMsg 

func (b *BPFLib) RemoveSkMsg() error

func (*BPFLib) RemoveSockmap 

func (b *BPFLib) RemoveSockmap(mode FindObjectMode) error

func (*BPFLib) RemoveSockmapEndpointsMap 

func (b *BPFLib) RemoveSockmapEndpointsMap() error

func (*BPFLib) RemoveSockops 

func (b *BPFLib) RemoveSockops() error

func (*BPFLib) RemoveXDP 

func (b *BPFLib) RemoveXDP(ifName string, mode XDPMode) error

func (*BPFLib) UpdateCIDRMap 

func (b *BPFLib) UpdateCIDRMap(ifName string, family IPFamily, ip net.IP, mask int, refCount uint32) error

func (*BPFLib) UpdateFailsafeMap 

func (b *BPFLib) UpdateFailsafeMap(proto uint8, port uint16) error

func (*BPFLib) UpdateSockmapEndpoints 

func (b *BPFLib) UpdateSockmapEndpoints(ip net.IP, mask int) error

type Binary 

type Binary struct {
	// contains filtered or unexported fields
}

Binary is an in memory representation of a BPF binary

func BinaryFromFile 

func BinaryFromFile(ifile string) (*Binary, error)

BinaryFromFile reads a binary from a file

func (*Binary) PatchSkbMark 

func (b *Binary) PatchSkbMark(mark uint32)

PatchSkbMark replaces SKBM with the expected mark - for tests.

func (*Binary) ReplaceAll 

func (b *Binary) ReplaceAll(orig, replacement []byte)

ReplaceAll replaces all non-overlapping instance of orig with replacements.

func (*Binary) WriteToFile 

func (b *Binary) WriteToFile(ofile string) error

WriteToFile writes the binary to a file

type CIDRMap 

type CIDRMap struct {
	Info CIDRMapInfo
	M    map[IPv4Mask]uint32
}

func NewMockCIDRMap 

func NewMockCIDRMap(mapID int) CIDRMap

type CIDRMapInfo 

type CIDRMapInfo struct {
	CommonMapInfo

	Family IPFamily
}

type CIDRMapKey 

type CIDRMapKey struct {
	// contains filtered or unexported fields
}

func NewCIDRMapKey 

func NewCIDRMapKey(n *net.IPNet) CIDRMapKey

func (*CIDRMapKey) ToIPNet 

func (k *CIDRMapKey) ToIPNet() *net.IPNet

type CIDRMapsKey 

type CIDRMapsKey struct {
	IfName string
	Family IPFamily
}

type CommonMapInfo 

type CommonMapInfo struct {
	Id        int
	Type      string
	KeySize   int
	ValueSize int
}

type EPAttachInfo 

type EPAttachInfo struct {
	TCId    int
	XDPId   int
	XDPMode string
}

EPAttachInfo tells what programs are attached to an endpoint.

type FailsafeMap 

type FailsafeMap struct {
	Info FailsafeMapInfo
	M    map[ProtoPort]struct{} // (protocol, port) set
}

func NewMockFailsafeMap 

func NewMockFailsafeMap(mapID int) FailsafeMap

type FailsafeMapInfo 

type FailsafeMapInfo struct {
	CommonMapInfo
}

type FindObjectMode 

type FindObjectMode uint32
const (
	FindInBPFFSOnly FindObjectMode = 1 << iota
	FindByID
)

type Hook 

type Hook int

Hook is the hook to which a BPF program should be attached. This is relative to the host namespace so workload PolDirnIngress policy is attached to the HookEgress. 

const (
	HookIngress Hook = iota
	HookEgress
	HookXDP
	HookCount

	HookBad Hook = -1
)

func StringToHook 

func StringToHook(s string) Hook

func (Hook) String 

func (h Hook) String() string

type IPFamily 

type IPFamily int

XXX maybe use ipsets.IPFamily 

const (
	IPFamilyUnknown IPFamily = iota
	IPFamilyV4
	IPFamilyV6
)

func (IPFamily) Size 

func (m IPFamily) Size() int

func (IPFamily) String 

func (m IPFamily) String() string

type IPv4Mask 

type IPv4Mask struct {
	Ip   [4]byte
	Mask int
}

type MockBPFLib 

type MockBPFLib struct {
	XDPProgs            map[string]XDPInfo      // iface -> []maps
	CIDRMaps            map[CIDRMapsKey]CIDRMap // iface -> map[ip]refCount
	SockopsProg         *SockopsInfo
	SockMap             *SockMap
	SkMsgProg           *SkMsgInfo
	SockmapEndpointsMap *CIDRMap
	FailsafeMap         FailsafeMap
	CgroupV2Dir         string
	// contains filtered or unexported fields
}

func NewMockBPFLib 

func NewMockBPFLib(binDir string) *MockBPFLib

func (*MockBPFLib) AttachToCgroup 

func (b *MockBPFLib) AttachToCgroup() error

func (*MockBPFLib) AttachToSockmap 

func (b *MockBPFLib) AttachToSockmap() error

func (*MockBPFLib) DetachFromCgroup 

func (b *MockBPFLib) DetachFromCgroup(mode FindObjectMode) error

func (*MockBPFLib) DetachFromSockmap 

func (b *MockBPFLib) DetachFromSockmap(mode FindObjectMode) error

func (*MockBPFLib) DumpCIDRMap 

func (b *MockBPFLib) DumpCIDRMap(ifName string, family IPFamily) (map[CIDRMapKey]uint32, error)

func (*MockBPFLib) DumpFailsafeMap 

func (b *MockBPFLib) DumpFailsafeMap() ([]ProtoPort, error)

func (*MockBPFLib) DumpSockmapEndpointsMap 

func (b *MockBPFLib) DumpSockmapEndpointsMap(family IPFamily) ([]CIDRMapKey, error)

func (*MockBPFLib) GetBPFCalicoDir 

func (b *MockBPFLib) GetBPFCalicoDir() string

func (*MockBPFLib) GetCIDRMapID 

func (b *MockBPFLib) GetCIDRMapID(ifName string, family IPFamily) (int, error)

func (*MockBPFLib) GetFailsafeMapID 

func (b *MockBPFLib) GetFailsafeMapID() (int, error)

func (*MockBPFLib) GetMapsFromXDP 

func (b *MockBPFLib) GetMapsFromXDP(ifName string) ([]int, error)

func (*MockBPFLib) GetXDPID 

func (b *MockBPFLib) GetXDPID(ifName string) (int, error)

func (*MockBPFLib) GetXDPIfaces 

func (b *MockBPFLib) GetXDPIfaces() ([]string, error)

func (*MockBPFLib) GetXDPMode 

func (b *MockBPFLib) GetXDPMode(ifName string) (XDPMode, error)

func (*MockBPFLib) GetXDPObjTag 

func (b *MockBPFLib) GetXDPObjTag(objPath string) (tag string, err error)

func (*MockBPFLib) GetXDPObjTagAuto 

func (b *MockBPFLib) GetXDPObjTagAuto() (string, error)

func (*MockBPFLib) GetXDPTag 

func (b *MockBPFLib) GetXDPTag(ifName string) (string, error)

func (*MockBPFLib) IsValidMap 

func (b *MockBPFLib) IsValidMap(ifName string, family IPFamily) (bool, error)

func (*MockBPFLib) ListCIDRMaps 

func (b *MockBPFLib) ListCIDRMaps(family IPFamily) ([]string, error)

func (*MockBPFLib) LoadSkMsg 

func (b *MockBPFLib) LoadSkMsg(objPath string) error

func (*MockBPFLib) LoadSkMsgAuto 

func (b *MockBPFLib) LoadSkMsgAuto() error

func (*MockBPFLib) LoadSockops 

func (b *MockBPFLib) LoadSockops(objPath string) error

func (*MockBPFLib) LoadSockopsAuto 

func (b *MockBPFLib) LoadSockopsAuto() error

func (*MockBPFLib) LoadXDP 

func (b *MockBPFLib) LoadXDP(objPath, ifName string, mode XDPMode) error

func (*MockBPFLib) LoadXDPAuto 

func (b *MockBPFLib) LoadXDPAuto(ifName string, mode XDPMode) error

func (*MockBPFLib) LookupCIDRMap 

func (b *MockBPFLib) LookupCIDRMap(ifName string, family IPFamily, ip net.IP, mask int) (uint32, error)

func (*MockBPFLib) LookupFailsafeMap 

func (b *MockBPFLib) LookupFailsafeMap(proto uint8, port uint16) (bool, error)

func (*MockBPFLib) LookupSockmapEndpointsMap 

func (b *MockBPFLib) LookupSockmapEndpointsMap(ip net.IP, mask int) (bool, error)

func (*MockBPFLib) NewCIDRMap 

func (b *MockBPFLib) NewCIDRMap(ifName string, family IPFamily) (string, error)

func (*MockBPFLib) NewFailsafeMap 

func (b *MockBPFLib) NewFailsafeMap() (string, error)

func (*MockBPFLib) NewSockmap 

func (b *MockBPFLib) NewSockmap() (string, error)

func (*MockBPFLib) NewSockmapEndpointsMap 

func (b *MockBPFLib) NewSockmapEndpointsMap() (string, error)

func (*MockBPFLib) RemoveCIDRMap 

func (b *MockBPFLib) RemoveCIDRMap(ifName string, family IPFamily) error

func (*MockBPFLib) RemoveFailsafeMap 

func (b *MockBPFLib) RemoveFailsafeMap() error

func (*MockBPFLib) RemoveItemCIDRMap 

func (b *MockBPFLib) RemoveItemCIDRMap(ifName string, family IPFamily, ip net.IP, mask int) error

func (*MockBPFLib) RemoveItemFailsafeMap 

func (b *MockBPFLib) RemoveItemFailsafeMap(proto uint8, port uint16) error

func (*MockBPFLib) RemoveItemSockmapEndpointsMap 

func (b *MockBPFLib) RemoveItemSockmapEndpointsMap(ip net.IP, mask int) error

func (*MockBPFLib) RemoveSkMsg 

func (b *MockBPFLib) RemoveSkMsg() error

func (*MockBPFLib) RemoveSockmap 

func (b *MockBPFLib) RemoveSockmap(mode FindObjectMode) error

func (*MockBPFLib) RemoveSockmapEndpointsMap 

func (b *MockBPFLib) RemoveSockmapEndpointsMap() error

func (*MockBPFLib) RemoveSockops 

func (b *MockBPFLib) RemoveSockops() error

func (*MockBPFLib) RemoveXDP 

func (b *MockBPFLib) RemoveXDP(ifName string, mode XDPMode) error

func (*MockBPFLib) UpdateCIDRMap 

func (b *MockBPFLib) UpdateCIDRMap(ifName string, family IPFamily, ip net.IP, mask int, refCount uint32) error

func (*MockBPFLib) UpdateFailsafeMap 

func (b *MockBPFLib) UpdateFailsafeMap(proto uint8, port uint16) error

func (*MockBPFLib) UpdateSockmapEndpoints 

func (b *MockBPFLib) UpdateSockmapEndpoints(ip net.IP, mask int) error

type PolicyDebugInfo 

type PolicyDebugInfo struct {
	IfaceName  string    `json:"ifacename"`
	Hook       string    `json:"hook"`
	PolicyInfo asm.Insns `json:"policyInfo"`
	Error      string    `json:"error"`
}

PolicyDebugInfo describes policy debug info

type ProgFD 

type ProgFD uint32

func LoadBPFProgramFromInsns 

func LoadBPFProgramFromInsns(insns asm.Insns, name, license string, progType uint32) (fd ProgFD, err error)

func (ProgFD) Close 

func (f ProgFD) Close() error

type ProgInfo 

type ProgInfo struct {
	Id     int    `json:"id"`
	Type   string `json:"type"`
	Tag    string `json:"tag"`
	MapIds []int  `json:"map_ids"`
	Err    string `json:"error"`
}

func GetAllProgs 

func GetAllProgs() ([]ProgInfo, error)

type ProgResult 

type ProgResult struct {
	RC       int32
	Duration time.Duration
	DataOut  []byte
}

func RunBPFProgram 

func RunBPFProgram(fd ProgFD, dataIn []byte, repeat int) (pr ProgResult, err error)

type ProtoPort 

type ProtoPort struct {
	Proto labelindex.IPSetPortProtocol
	Port  uint16
}

type SkMsgInfo 

type SkMsgInfo struct {
}

type SockMap 

type SockMap struct {
	Info SockMapInfo
	M    map[IPv4Mask]uint32
}

func NewMockSockMap 

func NewMockSockMap(mapID int) SockMap

type SockMapInfo 

type SockMapInfo struct {
	CommonMapInfo

	SkMsg *SkMsgInfo
}

type SockopsInfo 

type SockopsInfo struct {
	CgroupPath string
}

type TcList 

type TcList []struct {
	DevName string `json:"devname"`
	ID      int    `json:"id"`
}

type XDPInfo 

type XDPInfo struct {
	Id    int
	Maps  []int
	Bytes []byte
	Mode  XDPMode
}

type XDPList 

type XDPList []struct {
	DevName string `json:"devname"`
	IfIndex int    `json:"ifindex"`
	Mode    string `json:"mode"`
	ID      int    `json:"id"`
}

type XDPMode 

type XDPMode int
const (
	XDPDriver  XDPMode = unix.XDP_FLAGS_DRV_MODE
	XDPOffload XDPMode = unix.XDP_FLAGS_HW_MODE
	XDPGeneric XDPMode = unix.XDP_FLAGS_SKB_MODE
)

func (XDPMode) String 

func (m XDPMode) String() string

Source Files

View all Source files

Directories

Path Synopsis
Package asm contains a basic eBPF bytecode assembler.
 Package asm contains a basic eBPF bytecode assembler.
v2
v3
multiversion
multiversion/v2
multiversion/v3
multiversion/v4
multiversion/v5
tc
defs

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