Refactor faasd and faas-containerd merge

The use of containerd and CNI functions has been refactored to reuse
the same codebase.

Added all network functionality to own directory and package. Removed
netlink and weave library in favor of using CNI plugin result files.

Rename containers handler to functions to clear-up functionality.

Signed-off-by: Carlos de Paula <me@carlosedp.com>

vendor/github.com/vishvananda/netlink/nl/tc_linux.go

@@ -1,6 +1,7 @@
 package nl
 
 import (
+	"encoding/binary"
 	"unsafe"
 )
 
@@ -64,6 +65,15 @@ const (
 	TCA_PRIO_MAX = TCA_PRIO_MQ
 )
 
+const (
+	TCA_STATS_UNSPEC = iota
+	TCA_STATS_BASIC
+	TCA_STATS_RATE_EST
+	TCA_STATS_QUEUE
+	TCA_STATS_APP
+	TCA_STATS_MAX = TCA_STATS_APP
+)
+
 const (
 	SizeofTcMsg          = 0x14
 	SizeofTcActionMsg    = 0x04
@@ -79,7 +89,10 @@ const (
 	SizeofTcU32Key       = 0x10
 	SizeofTcU32Sel       = 0x10 // without keys
 	SizeofTcGen          = 0x14
+	SizeofTcConnmark     = SizeofTcGen + 0x04
 	SizeofTcMirred       = SizeofTcGen + 0x08
+	SizeofTcTunnelKey    = SizeofTcGen + 0x04
+	SizeofTcSkbEdit      = SizeofTcGen
 	SizeofTcPolice       = 2*SizeofTcRateSpec + 0x20
 )
 
@@ -412,6 +425,57 @@ func (x *TcHtbGlob) Serialize() []byte {
 	return (*(*[SizeofTcHtbGlob]byte)(unsafe.Pointer(x)))[:]
 }
 
+// HFSC
+
+type Curve struct {
+	m1 uint32
+	d  uint32
+	m2 uint32
+}
+
+type HfscCopt struct {
+	Rsc Curve
+	Fsc Curve
+	Usc Curve
+}
+
+func (c *Curve) Attrs() (uint32, uint32, uint32) {
+	return c.m1, c.d, c.m2
+}
+
+func (c *Curve) Set(m1 uint32, d uint32, m2 uint32) {
+	c.m1 = m1
+	c.d = d
+	c.m2 = m2
+}
+
+func DeserializeHfscCurve(b []byte) *Curve {
+	return &Curve{
+		m1: binary.LittleEndian.Uint32(b[0:4]),
+		d:  binary.LittleEndian.Uint32(b[4:8]),
+		m2: binary.LittleEndian.Uint32(b[8:12]),
+	}
+}
+
+func SerializeHfscCurve(c *Curve) (b []byte) {
+	t := make([]byte, binary.MaxVarintLen32)
+	binary.LittleEndian.PutUint32(t, c.m1)
+	b = append(b, t[:4]...)
+	binary.LittleEndian.PutUint32(t, c.d)
+	b = append(b, t[:4]...)
+	binary.LittleEndian.PutUint32(t, c.m2)
+	b = append(b, t[:4]...)
+	return b
+}
+
+type TcHfscOpt struct {
+	Defcls uint16
+}
+
+func (x *TcHfscOpt) Serialize() []byte {
+	return (*(*[2]byte)(unsafe.Pointer(x)))[:]
+}
+
 const (
 	TCA_U32_UNSPEC = iota
 	TCA_U32_CLASSID
@@ -586,11 +650,47 @@ const (
 	TCA_BPF_FD
 	TCA_BPF_NAME
 	TCA_BPF_FLAGS
-	TCA_BPF_MAX = TCA_BPF_FLAGS
+	TCA_BPF_FLAGS_GEN
+	TCA_BPF_TAG
+	TCA_BPF_ID
+	TCA_BPF_MAX = TCA_BPF_ID
 )
 
 type TcBpf TcGen
 
+const (
+	TCA_ACT_CONNMARK = 14
+)
+
+const (
+	TCA_CONNMARK_UNSPEC = iota
+	TCA_CONNMARK_PARMS
+	TCA_CONNMARK_TM
+	TCA_CONNMARK_MAX = TCA_CONNMARK_TM
+)
+
+// struct tc_connmark {
+//   tc_gen;
+//   __u16 zone;
+// };
+
+type TcConnmark struct {
+	TcGen
+	Zone uint16
+}
+
+func (msg *TcConnmark) Len() int {
+	return SizeofTcConnmark
+}
+
+func DeserializeTcConnmark(b []byte) *TcConnmark {
+	return (*TcConnmark)(unsafe.Pointer(&b[0:SizeofTcConnmark][0]))
+}
+
+func (x *TcConnmark) Serialize() []byte {
+	return (*(*[SizeofTcConnmark]byte)(unsafe.Pointer(x)))[:]
+}
+
 const (
 	TCA_ACT_MIRRED = 8
 )
@@ -626,6 +726,63 @@ func (x *TcMirred) Serialize() []byte {
 	return (*(*[SizeofTcMirred]byte)(unsafe.Pointer(x)))[:]
 }
 
+const (
+	TCA_TUNNEL_KEY_UNSPEC = iota
+	TCA_TUNNEL_KEY_TM
+	TCA_TUNNEL_KEY_PARMS
+	TCA_TUNNEL_KEY_ENC_IPV4_SRC
+	TCA_TUNNEL_KEY_ENC_IPV4_DST
+	TCA_TUNNEL_KEY_ENC_IPV6_SRC
+	TCA_TUNNEL_KEY_ENC_IPV6_DST
+	TCA_TUNNEL_KEY_ENC_KEY_ID
+	TCA_TUNNEL_KEY_MAX = TCA_TUNNEL_KEY_ENC_KEY_ID
+)
+
+type TcTunnelKey struct {
+	TcGen
+	Action int32
+}
+
+func (x *TcTunnelKey) Len() int {
+	return SizeofTcTunnelKey
+}
+
+func DeserializeTunnelKey(b []byte) *TcTunnelKey {
+	return (*TcTunnelKey)(unsafe.Pointer(&b[0:SizeofTcTunnelKey][0]))
+}
+
+func (x *TcTunnelKey) Serialize() []byte {
+	return (*(*[SizeofTcTunnelKey]byte)(unsafe.Pointer(x)))[:]
+}
+
+const (
+	TCA_SKBEDIT_UNSPEC = iota
+	TCA_SKBEDIT_TM
+	TCA_SKBEDIT_PARMS
+	TCA_SKBEDIT_PRIORITY
+	TCA_SKBEDIT_QUEUE_MAPPING
+	TCA_SKBEDIT_MARK
+	TCA_SKBEDIT_PAD
+	TCA_SKBEDIT_PTYPE
+	TCA_SKBEDIT_MAX = TCA_SKBEDIT_MARK
+)
+
+type TcSkbEdit struct {
+	TcGen
+}
+
+func (x *TcSkbEdit) Len() int {
+	return SizeofTcSkbEdit
+}
+
+func DeserializeSkbEdit(b []byte) *TcSkbEdit {
+	return (*TcSkbEdit)(unsafe.Pointer(&b[0:SizeofTcSkbEdit][0]))
+}
+
+func (x *TcSkbEdit) Serialize() []byte {
+	return (*(*[SizeofTcSkbEdit]byte)(unsafe.Pointer(x)))[:]
+}
+
 // struct tc_police {
 // 	__u32			index;
 // 	int			action;
@@ -708,3 +865,10 @@ const (
 	TCA_FQ_CODEL_DROP_BATCH_SIZE
 	TCA_FQ_CODEL_MEMORY_LIMIT
 )
+
+const (
+	TCA_HFSC_UNSPEC = iota
+	TCA_HFSC_RSC
+	TCA_HFSC_FSC
+	TCA_HFSC_USC
+)