feat(opi-plugin): intel e2000 vendor plugin for opi-evpn-bridge

Signed-off-by: atulpatel261194 <[email protected]>

Author: atulpatel261194

evpn-gw-plugin/intel-e2000/p4runtime/p4driverapi/p4ctl.go

@@ -0,0 +1,308 @@
+// SPDX-License-Identifier: Apache-2.0
+// Copyright (c) 2022-2023 Intel Corporation, or its subsidiaries.
+// Copyright (C) 2023 Nordix Foundation.
+
+// Package p4driverapi handles p4 driver realted functionality
+package p4driverapi
+
+import (
+	"bytes"
+	"context"
+	"encoding/binary"
+
+	// "encoding/hex"
+	"fmt"
+	"net"
+
+	// "strings"
+	"log"
+	"time"
+
+	logr "github.com/sirupsen/logrus"
+	"google.golang.org/grpc"
+
+	p4_v1 "github.com/p4lang/p4runtime/go/p4/v1"
+
+	"github.com/antoninbas/p4runtime-go-client/pkg/client"
+)
+
+const (
+	defaultDeviceID = 1
+	lpmStr          = "lpm"
+	ternaryStr      = "ternary"
+)
+
+var (
+	// Ctx var of type context
+	Ctx context.Context
+
+	// P4RtC var of \p4 runtime client
+	P4RtC *client.Client
+)
+
+// TableEntry p4 table entry type
+type TableEntry struct {
+	Tablename string
+	TableField
+	Action
+}
+
+// Action p4 table action type
+type Action struct {
+	ActionName string
+	Params     []interface{}
+}
+
+// TableField p4 table field type
+type TableField struct {
+	FieldValue map[string][2]interface{}
+	Priority   int32
+}
+
+// uint16toBytes convert uint16 to bytes
+func uint16toBytes(val uint16) []byte {
+	return []byte{byte(val >> 8), byte(val)}
+}
+
+// boolToBytes convert bool to bytes
+func boolToBytes(val bool) []byte {
+	if val {
+		return []byte{1}
+	}
+	return []byte{0}
+}
+
+// uint32toBytes convert uint32 to bytes
+func uint32toBytes(num uint32) []byte {
+	bytes := make([]byte, 4)
+	binary.BigEndian.PutUint32(bytes, num)
+	return bytes
+}
+
+// Buildmfs builds the match fields
+func Buildmfs(tablefield TableField) (map[string]client.MatchInterface, bool, error) {
+	var isTernary bool
+	isTernary = false
+	mfs := map[string]client.MatchInterface{}
+	for key, value := range tablefield.FieldValue {
+		switch v := value[0].(type) {
+		case net.HardwareAddr:
+			mfs[key] = &client.ExactMatch{Value: value[0].(net.HardwareAddr)}
+		case uint16:
+			// if value[1].(string) == lpmStr {
+			switch value[1].(string) {
+			case lpmStr:
+				mfs[key] = &client.LpmMatch{Value: uint16toBytes(value[0].(uint16)), PLen: 31}
+			// } else if value[1].(string) == ternaryStr {
+			case ternaryStr:
+				isTernary = true
+				mfs[key] = &client.TernaryMatch{Value: uint16toBytes(value[0].(uint16)), Mask: uint32toBytes(4294967295)}
+			// } else {
+			default:
+				mfs[key] = &client.ExactMatch{Value: uint16toBytes(value[0].(uint16))}
+			}
+		case *net.IPNet:
+			maskSize, _ := v.Mask.Size()
+			ip := v.IP.To4()
+			// if value[1].(string) == lpmStr {
+			switch value[1].(string) {
+			case lpmStr:
+				mfs[key] = &client.LpmMatch{Value: v.IP.To4(), PLen: int32(maskSize)}
+			// } else if value[1].(string) == ternaryStr {
+			case ternaryStr:
+				isTernary = true
+				mfs[key] = &client.TernaryMatch{Value: []byte(ip), Mask: uint32toBytes(4294967295)}
+			// } else {
+			default:
+				mfs[key] = &client.ExactMatch{Value: []byte(ip)}
+			}
+		case net.IP:
+
+			switch value[1].(string) {
+			case lpmStr:
+
+				mfs[key] = &client.LpmMatch{Value: value[0].(net.IP).To4(), PLen: 24}
+			// } else if value[1].(string) == ternaryStr {
+			case ternaryStr:
+				isTernary = true
+				mfs[key] = &client.TernaryMatch{Value: []byte(v), Mask: uint32toBytes(4294967295)}
+			// } else {
+			default:
+				mfs[key] = &client.ExactMatch{Value: []byte(v)}
+			}
+		case bool:
+			mfs[key] = &client.ExactMatch{Value: boolToBytes(value[0].(bool))}
+		case uint32:
+			switch value[1].(string) {
+			case lpmStr:
+
+				mfs[key] = &client.LpmMatch{Value: uint32toBytes(value[0].(uint32)), PLen: 31}
+			// } else if value[1].(string) == ternaryStr {
+			case ternaryStr:
+				isTernary = true
+				mfs[key] = &client.TernaryMatch{Value: uint32toBytes(value[0].(uint32)), Mask: uint32toBytes(4294967295)}
+			// } else {
+			default:
+				mfs[key] = &client.ExactMatch{Value: uint32toBytes(value[0].(uint32))}
+			}
+		default:
+			log.Println("intel-e2000: Unknown field ", v)
+			return mfs, false, fmt.Errorf("invalid inputtype %d for %s", v, key)
+		}
+	}
+	return mfs, isTernary, nil
+}
+
+// GetEntry get the entry
+func GetEntry(table string) ([]*p4_v1.TableEntry, error) {
+	entry, err1 := P4RtC.ReadTableEntryWildcard(Ctx, table)
+	return entry, err1
+}
+
+// DelEntry deletes the entry
+func DelEntry(entry TableEntry) error {
+	Options := &client.TableEntryOptions{
+		Priority: entry.TableField.Priority,
+	}
+	mfs, isTernary, err := Buildmfs(entry.TableField)
+	if err != nil {
+		log.Fatalf("intel-e2000: Error in Building mfs: %v", err)
+		return err
+	}
+	if isTernary {
+		entry := P4RtC.NewTableEntry(entry.Tablename, mfs, nil, Options)
+		return P4RtC.DeleteTableEntry(Ctx, entry)
+	}
+
+	entryP := P4RtC.NewTableEntry(entry.Tablename, mfs, nil, nil)
+	return P4RtC.DeleteTableEntry(Ctx, entryP)
+}
+
+/*// mustMarshal marshal the msg
+func mustMarshal(msg proto.Message) []byte {
+	data, err := proto.Marshal(msg)
+	if err != nil {
+		panic(err) // You should handle errors appropriately in your code
+	}
+	return data
+}*/
+
+// AddEntry adds an entry
+func AddEntry(entry TableEntry) error {
+	Options := &client.TableEntryOptions{
+		Priority: entry.TableField.Priority,
+	}
+	mfs, isTernary, err := Buildmfs(entry.TableField)
+	if err != nil {
+		log.Fatalf("intel-e2000: Error in Building mfs: %v", err)
+		return err
+	}
+	params := make([][]byte, len(entry.Action.Params))
+	for i := 0; i < len(entry.Action.Params); i++ {
+		switch v := entry.Action.Params[i].(type) {
+		case uint16:
+			buf := new(bytes.Buffer)
+			err1 := binary.Write(buf, binary.BigEndian, v)
+			if err1 != nil {
+				log.Println("intel-e2000: binary.Write failed:", err1)
+				return err1
+			}
+			params[i] = buf.Bytes()
+		case uint32:
+			buf := new(bytes.Buffer)
+			err1 := binary.Write(buf, binary.BigEndian, v)
+			if err1 != nil {
+				log.Println("inte-e2000: binary.Write failed:", err1)
+				return err1
+			}
+			params[i] = buf.Bytes()
+		case net.HardwareAddr:
+			params[i] = v
+		case net.IP:
+			params[i] = v
+		default:
+			log.Println("intel-e2000: Unknown actionparam", v)
+			return nil
+		}
+	}
+
+	actionSet := P4RtC.NewTableActionDirect(entry.Action.ActionName, params)
+
+	if isTernary {
+		entryP := P4RtC.NewTableEntry(entry.Tablename, mfs, actionSet, Options)
+		return P4RtC.InsertTableEntry(Ctx, entryP)
+	}
+	entryP := P4RtC.NewTableEntry(entry.Tablename, mfs, actionSet, nil)
+	return P4RtC.InsertTableEntry(Ctx, entryP)
+}
+
+/*
+// encodeMac encodes the mac from string
+
+	func encodeMac(macAddrString string) []byte {
+		str := strings.Replace(macAddrString, ":", "", -1)
+		decoded, _ := hex.DecodeString(str)
+		return decoded
+	}
+*/
+
+// StopCh is used to when to stop the p4rtc when a terminate signal is generated
+var StopCh = make(chan struct{})
+
+// NewP4RuntimeClient get the p4 runtime client
+func NewP4RuntimeClient(binPath string, p4infoPath string, conn *grpc.ClientConn) error {
+	Ctx = context.Background()
+	c := p4_v1.NewP4RuntimeClient(conn)
+	resp, err := c.Capabilities(Ctx, &p4_v1.CapabilitiesRequest{})
+	if err != nil {
+		logr.Fatalf("intel-e2000: Error in Capabilities RPC: %v", err)
+		return err
+	}
+	logr.Infof("intel-e2000: P4Runtime server version is %s", resp.P4RuntimeApiVersion)
+
+	electionID := &p4_v1.Uint128{High: 0, Low: 1}
+
+	P4RtC = client.NewClient(c, defaultDeviceID, electionID)
+	arbitrationCh := make(chan bool)
+
+	errs := make(chan error, 1)
+	go func() {
+		errs <- P4RtC.Run(StopCh, arbitrationCh, nil)
+	}()
+
+	waitCh := make(chan struct{})
+
+	go func() {
+		sent := false
+		for isPrimary := range arbitrationCh {
+			if isPrimary {
+				logr.Infof("We are the primary client!")
+				if !sent {
+					waitCh <- struct{}{}
+					sent = true
+				}
+			} else {
+				logr.Infof("We are not the primary client!")
+			}
+		}
+	}()
+
+	func() {
+		timeout := 5 * time.Second
+		Ctx2, cancel := context.WithTimeout(Ctx, timeout)
+		defer cancel()
+		select {
+		case <-Ctx2.Done():
+			logr.Fatalf("Could not become the primary client within %v", timeout)
+		case <-errs:
+			logr.Fatalf("Could not get the client within %v", timeout)
+		case <-waitCh:
+		}
+	}()
+	logr.Info("Setting forwarding pipe")
+	if _, err := P4RtC.SetFwdPipe(Ctx, binPath, p4infoPath, 0); err != nil {
+		logr.Fatalf("Error when setting forwarding pipe: %v", err)
+		return err
+	}
+	return nil
+}