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diff --git a/vendor/golang.org/x/net/bpf/constants.go b/vendor/golang.org/x/net/bpf/constants.go
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-// Copyright 2016 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package bpf
-
-// A Register is a register of the BPF virtual machine.
-type Register uint16
-
-const (
- // RegA is the accumulator register. RegA is always the
- // destination register of ALU operations.
- RegA Register = iota
- // RegX is the indirection register, used by LoadIndirect
- // operations.
- RegX
-)
-
-// An ALUOp is an arithmetic or logic operation.
-type ALUOp uint16
-
-// ALU binary operation types.
-const (
- ALUOpAdd ALUOp = iota << 4
- ALUOpSub
- ALUOpMul
- ALUOpDiv
- ALUOpOr
- ALUOpAnd
- ALUOpShiftLeft
- ALUOpShiftRight
- aluOpNeg // Not exported because it's the only unary ALU operation, and gets its own instruction type.
- ALUOpMod
- ALUOpXor
-)
-
-// A JumpTest is a comparison operator used in conditional jumps.
-type JumpTest uint16
-
-// Supported operators for conditional jumps.
-const (
- // K == A
- JumpEqual JumpTest = iota
- // K != A
- JumpNotEqual
- // K > A
- JumpGreaterThan
- // K < A
- JumpLessThan
- // K >= A
- JumpGreaterOrEqual
- // K <= A
- JumpLessOrEqual
- // K & A != 0
- JumpBitsSet
- // K & A == 0
- JumpBitsNotSet
-)
-
-// An Extension is a function call provided by the kernel that
-// performs advanced operations that are expensive or impossible
-// within the BPF virtual machine.
-//
-// Extensions are only implemented by the Linux kernel.
-//
-// TODO: should we prune this list? Some of these extensions seem
-// either broken or near-impossible to use correctly, whereas other
-// (len, random, ifindex) are quite useful.
-type Extension int
-
-// Extension functions available in the Linux kernel.
-const (
- // extOffset is the negative maximum number of instructions used
- // to load instructions by overloading the K argument.
- extOffset = -0x1000
- // ExtLen returns the length of the packet.
- ExtLen Extension = 1
- // ExtProto returns the packet's L3 protocol type.
- ExtProto Extension = 0
- // ExtType returns the packet's type (skb->pkt_type in the kernel)
- //
- // TODO: better documentation. How nice an API do we want to
- // provide for these esoteric extensions?
- ExtType Extension = 4
- // ExtPayloadOffset returns the offset of the packet payload, or
- // the first protocol header that the kernel does not know how to
- // parse.
- ExtPayloadOffset Extension = 52
- // ExtInterfaceIndex returns the index of the interface on which
- // the packet was received.
- ExtInterfaceIndex Extension = 8
- // ExtNetlinkAttr returns the netlink attribute of type X at
- // offset A.
- ExtNetlinkAttr Extension = 12
- // ExtNetlinkAttrNested returns the nested netlink attribute of
- // type X at offset A.
- ExtNetlinkAttrNested Extension = 16
- // ExtMark returns the packet's mark value.
- ExtMark Extension = 20
- // ExtQueue returns the packet's assigned hardware queue.
- ExtQueue Extension = 24
- // ExtLinkLayerType returns the packet's hardware address type
- // (e.g. Ethernet, Infiniband).
- ExtLinkLayerType Extension = 28
- // ExtRXHash returns the packets receive hash.
- //
- // TODO: figure out what this rxhash actually is.
- ExtRXHash Extension = 32
- // ExtCPUID returns the ID of the CPU processing the current
- // packet.
- ExtCPUID Extension = 36
- // ExtVLANTag returns the packet's VLAN tag.
- ExtVLANTag Extension = 44
- // ExtVLANTagPresent returns non-zero if the packet has a VLAN
- // tag.
- //
- // TODO: I think this might be a lie: it reads bit 0x1000 of the
- // VLAN header, which changed meaning in recent revisions of the
- // spec - this extension may now return meaningless information.
- ExtVLANTagPresent Extension = 48
- // ExtVLANProto returns 0x8100 if the frame has a VLAN header,
- // 0x88a8 if the frame has a "Q-in-Q" double VLAN header, or some
- // other value if no VLAN information is present.
- ExtVLANProto Extension = 60
- // ExtRand returns a uniformly random uint32.
- ExtRand Extension = 56
-)
-
-// The following gives names to various bit patterns used in opcode construction.
-
-const (
- opMaskCls uint16 = 0x7
- // opClsLoad masks
- opMaskLoadDest = 0x01
- opMaskLoadWidth = 0x18
- opMaskLoadMode = 0xe0
- // opClsALU
- opMaskOperandSrc = 0x08
- opMaskOperator = 0xf0
- // opClsJump
- opMaskJumpConst = 0x0f
- opMaskJumpCond = 0xf0
-)
-
-const (
- // +---------------+-----------------+---+---+---+
- // | AddrMode (3b) | LoadWidth (2b) | 0 | 0 | 0 |
- // +---------------+-----------------+---+---+---+
- opClsLoadA uint16 = iota
- // +---------------+-----------------+---+---+---+
- // | AddrMode (3b) | LoadWidth (2b) | 0 | 0 | 1 |
- // +---------------+-----------------+---+---+---+
- opClsLoadX
- // +---+---+---+---+---+---+---+---+
- // | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 |
- // +---+---+---+---+---+---+---+---+
- opClsStoreA
- // +---+---+---+---+---+---+---+---+
- // | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 |
- // +---+---+---+---+---+---+---+---+
- opClsStoreX
- // +---------------+-----------------+---+---+---+
- // | Operator (4b) | OperandSrc (1b) | 1 | 0 | 0 |
- // +---------------+-----------------+---+---+---+
- opClsALU
- // +-----------------------------+---+---+---+---+
- // | TestOperator (4b) | 0 | 1 | 0 | 1 |
- // +-----------------------------+---+---+---+---+
- opClsJump
- // +---+-------------------------+---+---+---+---+
- // | 0 | 0 | 0 | RetSrc (1b) | 0 | 1 | 1 | 0 |
- // +---+-------------------------+---+---+---+---+
- opClsReturn
- // +---+-------------------------+---+---+---+---+
- // | 0 | 0 | 0 | TXAorTAX (1b) | 0 | 1 | 1 | 1 |
- // +---+-------------------------+---+---+---+---+
- opClsMisc
-)
-
-const (
- opAddrModeImmediate uint16 = iota << 5
- opAddrModeAbsolute
- opAddrModeIndirect
- opAddrModeScratch
- opAddrModePacketLen // actually an extension, not an addressing mode.
- opAddrModeMemShift
-)
-
-const (
- opLoadWidth4 uint16 = iota << 3
- opLoadWidth2
- opLoadWidth1
-)
-
-// Operator defined by ALUOp*
-
-const (
- opALUSrcConstant uint16 = iota << 3
- opALUSrcX
-)
-
-const (
- opJumpAlways = iota << 4
- opJumpEqual
- opJumpGT
- opJumpGE
- opJumpSet
-)
-
-const (
- opRetSrcConstant uint16 = iota << 4
- opRetSrcA
-)
-
-const (
- opMiscTAX = 0x00
- opMiscTXA = 0x80
-)