Enum BpfHelper

Source

#[non_exhaustive]
#[repr(u32)]pub enum BpfHelper {
Show 209 variants    Unspec = 0,
    MapLookupElem = 1,
    MapUpdateElem = 2,
    MapDeleteElem = 3,
    ProbeRead = 4,
    KtimeGetNs = 5,
    TracePrintk = 6,
    GetPrandomU32 = 7,
    GetSmpProcessorId = 8,
    SkbStoreBytes = 9,
    L3CsumReplace = 10,
    L4CsumReplace = 11,
    TailCall = 12,
    CloneRedirect = 13,
    GetCurrentPidTgid = 14,
    GetCurrentUidGid = 15,
    GetCurrentComm = 16,
    GetCgroupClassid = 17,
    SkbVlanPush = 18,
    SkbVlanPop = 19,
    SkbGetTunnelKey = 20,
    SkbSetTunnelKey = 21,
    PerfEventRead = 22,
    Redirect = 23,
    GetRouteRealm = 24,
    PerfEventOutput = 25,
    SkbLoadBytes = 26,
    GetStackid = 27,
    CsumDiff = 28,
    SkbGetTunnelOpt = 29,
    SkbSetTunnelOpt = 30,
    SkbChangeProto = 31,
    SkbChangeType = 32,
    SkbUnderCgroup = 33,
    GetHashRecalc = 34,
    GetCurrentTask = 35,
    ProbeWriteUser = 36,
    CurrentTaskUnderCgroup = 37,
    SkbChangeTail = 38,
    SkbPullData = 39,
    CsumUpdate = 40,
    SetHashInvalid = 41,
    GetNumaNodeId = 42,
    SkbChangeHead = 43,
    XdpAdjustHead = 44,
    ProbeReadStr = 45,
    GetSocketCookie = 46,
    GetSocketUid = 47,
    SetHash = 48,
    Setsockopt = 49,
    SkbAdjustRoom = 50,
    RedirectMap = 51,
    SkRedirectMap = 52,
    SockMapUpdate = 53,
    XdpAdjustMeta = 54,
    PerfEventReadValue = 55,
    PerfProgReadValue = 56,
    Getsockopt = 57,
    OverrideReturn = 58,
    SockOpsCbFlagsSet = 59,
    MsgRedirectMap = 60,
    MsgApplyBytes = 61,
    MsgCorkBytes = 62,
    MsgPullData = 63,
    Bind = 64,
    XdpAdjustTail = 65,
    SkbGetXfrmState = 66,
    GetStack = 67,
    SkbLoadBytesRelative = 68,
    FibLookup = 69,
    SockHashUpdate = 70,
    MsgRedirectHash = 71,
    SkRedirectHash = 72,
    LwtPushEncap = 73,
    LwtSeg6StoreBytes = 74,
    LwtSeg6AdjustSrh = 75,
    LwtSeg6Action = 76,
    RcRepeat = 77,
    RcKeydown = 78,
    SkbCgroupId = 79,
    GetCurrentCgroupId = 80,
    GetLocalStorage = 81,
    SkSelectReuseport = 82,
    SkbAncestorCgroupId = 83,
    SkLookupTcp = 84,
    SkLookupUdp = 85,
    SkRelease = 86,
    MapPushElem = 87,
    MapPopElem = 88,
    MapPeekElem = 89,
    MsgPushData = 90,
    MsgPopData = 91,
    RcPointerRel = 92,
    SpinLock = 93,
    SpinUnlock = 94,
    SkFullsock = 95,
    TcpSock = 96,
    SkbEcnSetCe = 97,
    GetListenerSock = 98,
    SkcLookupTcp = 99,
    TcpCheckSyncookie = 100,
    SysctlGetName = 101,
    SysctlGetCurrentValue = 102,
    SysctlGetNewValue = 103,
    SysctlSetNewValue = 104,
    Strtol = 105,
    Strtoul = 106,
    SkStorageGet = 107,
    SkStorageDelete = 108,
    SendSignal = 109,
    TcpGenSyncookie = 110,
    SkbOutput = 111,
    ProbeReadUser = 112,
    ProbeReadKernel = 113,
    ProbeReadUserStr = 114,
    ProbeReadKernelStr = 115,
    TcpSendAck = 116,
    SendSignalThread = 117,
    Jiffies64 = 118,
    ReadBranchRecords = 119,
    GetNsCurrentPidTgid = 120,
    XdpOutput = 121,
    GetNetnsCookie = 122,
    GetCurrentAncestorCgroupId = 123,
    SkAssign = 124,
    KtimeGetBootNs = 125,
    SeqPrintf = 126,
    SeqWrite = 127,
    SkCgroupId = 128,
    SkAncestorCgroupId = 129,
    RingbufOutput = 130,
    RingbufReserve = 131,
    RingbufSubmit = 132,
    RingbufDiscard = 133,
    RingbufQuery = 134,
    CsumLevel = 135,
    SkcToTcp6Sock = 136,
    SkcToTcpSock = 137,
    SkcToTcpTimewaitSock = 138,
    SkcToTcpRequestSock = 139,
    SkcToUdp6Sock = 140,
    GetTaskStack = 141,
    LoadHdrOpt = 142,
    StoreHdrOpt = 143,
    ReserveHdrOpt = 144,
    InodeStorageGet = 145,
    InodeStorageDelete = 146,
    DPath = 147,
    CopyFromUser = 148,
    SnprintfBtf = 149,
    SeqPrintfBtf = 150,
    SkbCgroupClassid = 151,
    RedirectNeigh = 152,
    PerCpuPtr = 153,
    ThisCpuPtr = 154,
    RedirectPeer = 155,
    TaskStorageGet = 156,
    TaskStorageDelete = 157,
    GetCurrentTaskBtf = 158,
    BprmOptsSet = 159,
    KtimeGetCoarseNs = 160,
    ImaInodeHash = 161,
    SockFromFile = 162,
    CheckMtu = 163,
    ForEachMapElem = 164,
    Snprintf = 165,
    SysBpf = 166,
    BtfFindByNameKind = 167,
    SysClose = 168,
    TimerInit = 169,
    TimerSetCallback = 170,
    TimerStart = 171,
    TimerCancel = 172,
    GetFuncIp = 173,
    GetAttachCookie = 174,
    TaskPtRegs = 175,
    GetBranchSnapshot = 176,
    TraceVprintk = 177,
    SkcToUnixSock = 178,
    KallsymsLookupName = 179,
    FindVma = 180,
    Loop = 181,
    Strncmp = 182,
    GetFuncArg = 183,
    GetFuncRet = 184,
    GetFuncArgCnt = 185,
    GetRetval = 186,
    SetRetval = 187,
    XdpGetBuffLen = 188,
    XdpLoadBytes = 189,
    XdpStoreBytes = 190,
    CopyFromUserTask = 191,
    SkbSetTstamp = 192,
    ImaFileHash = 193,
    KptrXchg = 194,
    MapLookupPercpuElem = 195,
    SkcToMptcpSock = 196,
    DynptrFromMem = 197,
    RingbufReserveDynptr = 198,
    RingbufSubmitDynptr = 199,
    RingbufDiscardDynptr = 200,
    DynptrRead = 201,
    DynptrWrite = 202,
    DynptrData = 203,
    TcpRawGenSyncookieIpv4 = 204,
    TcpRawGenSyncookieIpv6 = 205,
    TcpRawCheckSyncookieIpv4 = 206,
    TcpRawCheckSyncookieIpv6 = 207,
    KtimeGetTaiNs = 208,
}

Expand description

eBPF helper functions. See bpf-helpers(7)

The enum value represents the unique id reserved by the kernel to represent the helper function. This unique id works almost as a counter with a max value: __BPF_FUNC_MAX_ID. This max limit changes between kernel versions due to the addition of eBPF helper functions.

For more information on eBPF helper functions, check out (although slightly outdated) Marsden’s Oracle blog post.

Variants (Non-exhaustive)§

This enum is marked as non-exhaustive

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

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