ip

package
v1.2.0-rc.1.0...-65ced95 Latest Latest
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 Go to latest Published: May 20, 2019 License: GPL-2.0, GPL-2.0-or-later Imports: 12 Imported by: 1

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Index

Constants

View Source 
const IfAddrNil = ^IfAddr(0)

Variables

View Source 
var (
	ErrNotRewrite = errors.New("replacment adjacenty is not rewrite")
	ErrNotFound   = errors.New("adjacency not found")
)

Functions

This section is empty.

Types

type Address 

type Address [16]uint8

Generic ip4/ip6 address: big enough for either.

func AddressUint32 

func AddressUint32(x uint32) (a Address)

func AddressUint64 

func AddressUint64(x uint64) (a Address)

func (*Address) Add 

func (a *Address) Add(x uint64)

func (*Address) AsUint32 

func (a *Address) AsUint32(i uint) vnet.Uint32

Address 32-bit chunk in network byte order.

func (*Address) String 

func (a *Address) String() string

func (*Address) ToNetIP 

func (a *Address) ToNetIP() (ip net.IP)

type AddressStringer 

type AddressStringer func(a *Address) string

type Adj 

type Adj uint32

Index into adjacency table. 

const (
	AdjMiss Adj = 0
	AdjDrop Adj = 1
	AdjPunt Adj = 2
	AdjNil  Adj = (^Adj(0) - 1) // so AdjNil + 1 is non-zero for remaps.
)

Miss adjacency is always first in adjacency table.

func (Adj) IsConnectedRoute 

func (ai Adj) IsConnectedRoute(m *Main) (conn bool, si vnet.Si)

func (Adj) IsGlean 

func (ai Adj) IsGlean(m *Main) bool

func (Adj) IsLocal 

func (ai Adj) IsLocal(m *Main) bool

func (Adj) IsViaRoute 

func (ai Adj) IsViaRoute(m *Main) bool

func (Adj) String 

func (a Adj) String() string

type AdjGetCounterHandler 

type AdjGetCounterHandler func(tag string, v vnet.CombinedCounter)

type Adjacency 

type Adjacency struct {
	// Next hop after ip4-lookup.
	LookupNextIndex LookupNext

	// Number of adjecencies in block.  Greater than 1 means multipath; otherwise equal to 1.
	NAdj uint16

	// not used for Local and Glean
	// Destination index for rewrite.
	Index uint32

	vnet.Rewrite
}

func (*Adjacency) AdjLines 

func (a *Adjacency) AdjLines(m *Main) (lines []string)

func (*Adjacency) IsGlean 

func (a *Adjacency) IsGlean() bool

func (*Adjacency) IsLocal 

func (a *Adjacency) IsLocal() bool

func (*Adjacency) IsRewrite 

func (a *Adjacency) IsRewrite() bool

func (*Adjacency) ParseWithArgs 

func (a *Adjacency) ParseWithArgs(in *parse.Input, args *parse.Args)

type AdjacencyFinalizer 

type AdjacencyFinalizer interface {
	FinalizeAdjacency(a *Adjacency)
}

type Checksum 

type Checksum uint64

Incremental checksum update.

func (Checksum) AddBytes 

func (c Checksum) AddBytes(b []byte) (d Checksum)

func (Checksum) AddEven 

func (c Checksum) AddEven(x Checksum) (d Checksum)

Update checksum changing field at even byte offset from 0 to x.

func (Checksum) AddRef 

func (c Checksum) AddRef(first *vnet.Ref, o_first uint) (d Checksum)

func (Checksum) AddWithCarry 

func (sum Checksum) AddWithCarry(x Checksum) (t Checksum)

func (Checksum) Fold 

func (c Checksum) Fold() vnet.Uint16

Reduce to 16 bits.

func (Checksum) SubEven 

func (c Checksum) SubEven(x Checksum) Checksum

type Family 

type Family uint8
const (
	Ip4 Family = iota
	Ip6
	NFamily
)

func (Family) String 

func (x Family) String() string

type FamilyConfig 

type FamilyConfig struct {
	AddressStringer  AddressStringer
	Family           Family
	RewriteNode      vnet.Noder
	PacketType       vnet.PacketType
	GetRoute         func(p *net.IPNet, si vnet.Si) (ai Adj, as []Adjacency, ok bool)
	GetReachable     func(p *net.IPNet, si vnet.Si) (ai Adj, as []Adjacency, ok bool)
	GetRouteFibIndex func(p *net.IPNet, fi FibIndex) (ai Adj, ok bool)
	AddDelRoute      func(p *net.IPNet, fi FibIndex, newAdj Adj, isDel bool) (oldAdj Adj, err error)
}

type FibId 

type FibId uint32

Sparse 32 bit id for route table.

type FibIndex 

type FibIndex uint32

Dense index into fib vector.

type FibIndexVec 

type FibIndexVec []FibIndex

func (FibIndexVec) Len 

func (p FibIndexVec) Len() uint

func (*FibIndexVec) ResetLen 

func (p *FibIndexVec) ResetLen()

func (*FibIndexVec) Resize 

func (p *FibIndexVec) Resize(n uint)

func (*FibIndexVec) Validate 

func (p *FibIndexVec) Validate(i uint) *FibIndex

func (*FibIndexVec) ValidateInit 

func (p *FibIndexVec) ValidateInit(i uint, zero FibIndex) *FibIndex

func (*FibIndexVec) ValidateLen 

func (p *FibIndexVec) ValidateLen(l uint) (v *FibIndex)

func (*FibIndexVec) ValidateLenInit 

func (p *FibIndexVec) ValidateLenInit(l uint, zero FibIndex) (v *FibIndex)

type FibName 

type FibName struct {
	M *Main
	I FibIndex
}

func (FibName) String 

func (n FibName) String() string

type IfAddr 

type IfAddr uint32

type IfAddrVec 

type IfAddrVec []IfAddr

func (IfAddrVec) Len 

func (p IfAddrVec) Len() uint

func (*IfAddrVec) ResetLen 

func (p *IfAddrVec) ResetLen()

func (*IfAddrVec) Resize 

func (p *IfAddrVec) Resize(n uint)

func (*IfAddrVec) Validate 

func (p *IfAddrVec) Validate(i uint) *IfAddr

func (*IfAddrVec) ValidateInit 

func (p *IfAddrVec) ValidateInit(i uint, zero IfAddr) *IfAddr

func (*IfAddrVec) ValidateLen 

func (p *IfAddrVec) ValidateLen(l uint) (v *IfAddr)

func (*IfAddrVec) ValidateLenInit 

func (p *IfAddrVec) ValidateLenInit(l uint, zero IfAddr) (v *IfAddr)

type IfAddress 

type IfAddress struct {
	// ip4/ip6 address and map key plus length.
	Prefix net.IPNet

	// Interface which has this address.
	Si vnet.Si

	NeighborProbeAdj Adj
	// contains filtered or unexported fields
}

type LookupNext 

type LookupNext uint16

Next node index stored in ip adjacencies. 

const (
	// Packet does not match any route in table.
	LookupNextMiss LookupNext = iota

	// Adjacency says to drop or punt this packet.
	LookupNextDrop
	LookupNextPunt

	// This packet matches an IP address of one of our interfaces.
	LookupNextLocal

	// Glean node.
	// This packet matches an "interface route" and packets need to be passed to ip4 ARP (or ip6 neighbor discovery)
	// to find rewrite string for this destination.
	LookupNextGlean

	// This packet is to be rewritten and forwarded to the next
	// processing node.  This is typically the output interface but
	// might be another node for further output processing.
	LookupNextRewrite

	LookupNNext
)

func (*LookupNext) Parse 

func (n *LookupNext) Parse(in *parse.Input)

func (LookupNext) String 

func (n LookupNext) String() string

type Main 

type Main struct {
	FamilyConfig
	// contains filtered or unexported fields
}

func (*Main) AddDelInterfaceAddress 

func (m *Main) AddDelInterfaceAddress(si vnet.Si, p *net.IPNet, isDel bool) (ai IfAddr, exists bool, err error)

func (*Main) AddDelNextHop 

func (m *Main) AddDelNextHop(oldAdj Adj, nextHopAdj Adj, nextHopWeight NextHopWeight, af AdjacencyFinalizer, isDel bool) (newAdj Adj, ok bool)

func (*Main) AddNextHopsAdj 

func (m *Main) AddNextHopsAdj(nhs NextHopVec) (newAdj Adj, ok bool)

func (*Main) CallAdjAddHooks 

func (m *Main) CallAdjAddHooks(a Adj)

func (*Main) CallAdjDelHooks 

func (m *Main) CallAdjDelHooks(a Adj)

func (*Main) CallAdjGetCounterHooks 

func (m *Main) CallAdjGetCounterHooks(adj Adj, f AdjGetCounterHandler, clear bool)

func (*Main) CallAdjSyncCounterHooks 

func (m *Main) CallAdjSyncCounterHooks()

func (*Main) ClearAdjCounters 

func (m *Main) ClearAdjCounters()

func (*Main) DelAdj 

func (m *Main) DelAdj(a Adj)

func (*Main) DelNextHopsAdj 

func (m *Main) DelNextHopsAdj(oldAdj Adj) (ok bool)

func (*Main) EqualAdj 

func (m *Main) EqualAdj(ai0, ai1 Adj) (same bool)

func (*Main) FibIndexForId 

func (f *Main) FibIndexForId(id FibId) (i FibIndex, ok bool)

func (*Main) FibIndexForSi 

func (f *Main) FibIndexForSi(si vnet.Si) FibIndex

func (*Main) FibNameForIndex 

func (f *Main) FibNameForIndex(i FibIndex) string

func (*Main) ForeachAdjCounter 

func (m *Main) ForeachAdjCounter(a Adj, f AdjGetCounterHandler)

func (*Main) ForeachIfAddress 

func (m *Main) ForeachIfAddress(si vnet.Si, f func(ia IfAddr, i *IfAddress) error) error

func (*Main) FreeAdj 

func (m *Main) FreeAdj(a Adj) bool

func (*Main) GetAdj 

func (m *Main) GetAdj(a Adj) (as []Adjacency)

func (*Main) GetAdjRewriteSi 

func (m *Main) GetAdjRewriteSi(a Adj) (si vnet.Si, ok bool)

func (*Main) GetAdjacencyUsage 

func (m *Main) GetAdjacencyUsage() elib.HeapUsage

func (*Main) GetIfAddr 

func (m *Main) GetIfAddr(i IfAddr) *IfAddress

func (*Main) GetIfAddress 

func (m *Main) GetIfAddress(a net.IP, i FibIndex) (ia *IfAddress)

func (*Main) GetLayer 

func (m *Main) GetLayer(t Protocol) (l vnet.Layer, ok bool)

func (*Main) IfAddrForPrefix 

func (m *Main) IfAddrForPrefix(p *net.IPNet, si vnet.Si) (ai IfAddr, exists bool)

func (*Main) IfFirstAddr 

func (m *Main) IfFirstAddr(i vnet.Si) IfAddr

func (*Main) IfFirstAddress 

func (m *Main) IfFirstAddress(i vnet.Si) (ifa *IfAddress)

func (*Main) Init 

func (m *Main) Init(v *vnet.Vnet)

func (*Main) InterfaceAddressReset 

func (m *Main) InterfaceAddressReset(v *vnet.Vnet)

deletes ALL interface addresses

func (*Main) IsAdjFree 

func (m *Main) IsAdjFree(a Adj) bool

func (*Main) IsMpAdj 

func (m *Main) IsMpAdj(a Adj) bool

func (*Main) NewAdj 

func (m *Main) NewAdj(n uint) (Adj, []Adjacency)

func (*Main) NewAdjWithTemplate 

func (m *Main) NewAdjWithTemplate(n uint, template *Adjacency) (ai Adj, as []Adjacency)

func (*Main) NextHopsForAdj 

func (m *Main) NextHopsForAdj(a Adj) (nhs nextHopVec)

func (*Main) PackageInit 

func (m *Main) PackageInit(v *vnet.Vnet, c FamilyConfig)

func (*Main) PoisonAdj 

func (m *Main) PoisonAdj(a Adj)

func (*Main) RegisterAdjAddDelHook 

func (m *Main) RegisterAdjAddDelHook(f adjAddDelHook, dep ...*dep.Dep)

func (*Main) RegisterAdjGetCounterHook 

func (m *Main) RegisterAdjGetCounterHook(f adjGetCounterHook, dep ...*dep.Dep)

func (*Main) RegisterAdjSyncCounterHook 

func (m *Main) RegisterAdjSyncCounterHook(f adjSyncCounterHook, dep ...*dep.Dep)

func (*Main) RegisterLayer 

func (m *Main) RegisterLayer(v *vnet.Vnet, t Protocol, l vnet.Layer)

func (*Main) ReplaceNextHop 

func (m *Main) ReplaceNextHop(ai, fromNextHopAdj, toNextHopAdj Adj, af AdjacencyFinalizer) (newAdj Adj, err error)

func (*Main) SetFibIndexForId 

func (f *Main) SetFibIndexForId(id FibId, i FibIndex)

func (*Main) SetFibIndexForSi 

func (m *Main) SetFibIndexForSi(si vnet.Si, fi FibIndex)

func (*Main) SetFibNameForIndex 

func (f *Main) SetFibNameForIndex(name string, i FibIndex)

func (*Main) UnregisterLayer 

func (m *Main) UnregisterLayer(v *vnet.Vnet, t Protocol) (ok bool)

func (*Main) ValidateFibIndexForSi 

func (f *Main) ValidateFibIndexForSi(si vnet.Si) FibIndex

type NextHop 

type NextHop struct {
	Address net.IP
	Si      vnet.Si
	// contains filtered or unexported fields
}

func (*NextHop) FinalizeAdjacency 

func (n *NextHop) FinalizeAdjacency(a *Adjacency)

func (*NextHop) NextHopFibIndex 

func (n *NextHop) NextHopFibIndex(m *Main) FibIndex

func (*NextHop) NextHopWeight 

func (n *NextHop) NextHopWeight() NextHopWeight

type NextHopVec 

type NextHopVec []NextHop

func (NextHopVec) ListNhs 

func (nhs NextHopVec) ListNhs(m *Main) string

func (NextHopVec) Match 

func (nhs NextHopVec) Match(nhs2 []NextHop) bool

type NextHopWeight 

type NextHopWeight uint32

type Prefix 

type Prefix struct {
	Address
	Len uint32
}

func NewPrefix 

func NewPrefix(l uint32, a []byte) (p Prefix)

NewPrefix returns prefix with given length and address. Address will be masked so that only length bits may be non-zero.

func (*Prefix) IsMoreSpecific 

func (p *Prefix) IsMoreSpecific(q *Prefix) (ok bool)

Returns whether p matches q and is more specific.

func (*Prefix) IsMoreSpecificMatch 

func (p *Prefix) IsMoreSpecificMatch(q *Prefix) (more, match bool)

Like IsMoreSpecific but qualify by returning if prefix matches

func (*Prefix) String 

func (p *Prefix) String(m *Main) string

type Protocol 

type Protocol uint8

8-bit protocol field from IP 4/6 headers. 

const (
	IP6_HOP_BY_HOP_OPTIONS Protocol = 0
	ICMP                   Protocol = 1
	IGMP                   Protocol = 2
	GGP                    Protocol = 3
	IP_IN_IP               Protocol = 4
	ST                     Protocol = 5
	TCP                    Protocol = 6
	CBT                    Protocol = 7
	EGP                    Protocol = 8
	IGP                    Protocol = 9
	BBN_RCC_MON            Protocol = 10
	NVP2                   Protocol = 11
	PUP                    Protocol = 12
	ARGUS                  Protocol = 13
	EMCON                  Protocol = 14
	XNET                   Protocol = 15
	CHAOS                  Protocol = 16
	UDP                    Protocol = 17
	MUX                    Protocol = 18
	DCN_MEAS               Protocol = 19
	HMP                    Protocol = 20
	PRM                    Protocol = 21
	XNS_IDP                Protocol = 22
	TRUNK1                 Protocol = 23
	TRUNK2                 Protocol = 24
	LEAF1                  Protocol = 25
	LEAF2                  Protocol = 26
	RDP                    Protocol = 27
	IRTP                   Protocol = 28
	ISO_TP4                Protocol = 29
	NETBLT                 Protocol = 30
	MFE_NSP                Protocol = 31
	MERIT_INP              Protocol = 32
	SEP                    Protocol = 33
	THREE_PC               Protocol = 34
	IDPR                   Protocol = 35
	XTP                    Protocol = 36
	DDP                    Protocol = 37
	IDPR_CMTP              Protocol = 38
	TP                     Protocol = 39
	IL                     Protocol = 40
	IP6_IN_IP              Protocol = 41
	SDRP                   Protocol = 42
	IP6_ROUTE              Protocol = 43
	IP6_FRAG               Protocol = 44
	IDRP                   Protocol = 45
	RSVP                   Protocol = 46
	GRE                    Protocol = 47
	MHRP                   Protocol = 48
	BNA                    Protocol = 49
	IPSEC_ESP              Protocol = 50
	IPSEC_AH               Protocol = 51
	I_NLSP                 Protocol = 52
	SWIPE                  Protocol = 53
	NARP                   Protocol = 54
	MOBILE                 Protocol = 55
	TLSP                   Protocol = 56
	SKIP                   Protocol = 57
	ICMP6                  Protocol = 58
	IP6_NONXT              Protocol = 59
	IP6_DST_OPTIONS        Protocol = 60
	CFTP                   Protocol = 62
	SAT_EXPAK              Protocol = 64
	KRYPTOLAN              Protocol = 65
	RVD                    Protocol = 66
	IPPC                   Protocol = 67
	SAT_MON                Protocol = 69
	VISA                   Protocol = 70
	IPCV                   Protocol = 71
	CPNX                   Protocol = 72
	CPHB                   Protocol = 73
	WSN                    Protocol = 74
	PVP                    Protocol = 75
	BR_SAT_MON             Protocol = 76
	SUN_ND                 Protocol = 77
	WB_MON                 Protocol = 78
	WB_EXPAK               Protocol = 79
	ISO_IP                 Protocol = 80
	VMTP                   Protocol = 81
	SECURE_VMTP            Protocol = 82
	VINES                  Protocol = 83
	TTP                    Protocol = 84
	NSFNET_IGP             Protocol = 85
	DGP                    Protocol = 86
	TCF                    Protocol = 87
	EIGRP                  Protocol = 88
	OSPF                   Protocol = 89
	SPRITE_RPC             Protocol = 90
	LARP                   Protocol = 91
	MTP                    Protocol = 92
	AX                     Protocol = 93
	IPIP                   Protocol = 94
	MICP                   Protocol = 95
	SCC_SP                 Protocol = 96
	ETHERIP                Protocol = 97
	ENCAP                  Protocol = 98
	GMTP                   Protocol = 100
	IFMP                   Protocol = 101
	PNNI                   Protocol = 102
	PIM                    Protocol = 103
	ARIS                   Protocol = 104
	SCPS                   Protocol = 105
	QNX                    Protocol = 106
	A                      Protocol = 107
	IPCOMP                 Protocol = 108
	SNP                    Protocol = 109
	COMPAQ_PEER            Protocol = 110
	IPX_IN_IP              Protocol = 111
	VRRP                   Protocol = 112
	PGM                    Protocol = 113
	L2TP                   Protocol = 115
	DDX                    Protocol = 116
	IATP                   Protocol = 117
	STP                    Protocol = 118
	SRP                    Protocol = 119
	UTI                    Protocol = 120
	SMP                    Protocol = 121
	SM                     Protocol = 122
	PTP                    Protocol = 123
	ISIS                   Protocol = 124
	FIRE                   Protocol = 125
	CRTP                   Protocol = 126
	CRUDP                  Protocol = 127
	SSCOPMCE               Protocol = 128
	IPLT                   Protocol = 129
	SPS                    Protocol = 130
	PIPE                   Protocol = 131
	SCTP                   Protocol = 132
	FC                     Protocol = 133
	RSVP_E2E_IGNORE        Protocol = 134
	MOBILITY               Protocol = 135
	UDP_LITE               Protocol = 136
	MPLS_IN_IP             Protocol = 137
	RESERVED               Protocol = 255
)

func (Protocol) MaskedString 

func (v Protocol) MaskedString(r vnet.MaskedStringer) (s string)

func (*Protocol) Parse 

func (p *Protocol) Parse(in *parse.Input)

func (Protocol) String 

func (p Protocol) String() string

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