diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml index b93290b..06c4c71 100644 --- a/.github/workflows/ci.yaml +++ b/.github/workflows/ci.yaml @@ -27,7 +27,7 @@ jobs: with: go-version: 1.16 - name: Build - run: go build -race ./... + run: go build -race ./... - name: Test run: go test -race ./... golangci-lint: @@ -61,7 +61,7 @@ jobs: - uses: actions/checkout@v2 - name: Restrict dependencies on github.com/networkservicemesh/* env: - ALLOWED_REPOSITORIES: "sdk, api, sdk-k8s, sdk-sriov, sdk-kernel" + ALLOWED_REPOSITORIES: "sdk, api, sdk-sriov, sdk-kernel" run: | for i in $(grep github.com/networkservicemesh/ go.mod | grep -v '^module' | sed 's;.*\(github.com\/networkservicemesh\/[^ ]*\).*;\1;g');do if ! [ "$(echo ${ALLOWED_REPOSITORIES} | grep ${i#github.com/networkservicemesh/})" ]; then diff --git a/.github/workflows/update-dependent-repositories-gomod.yaml b/.github/workflows/update-dependent-repositories-gomod.yaml index 85930c4..08011d3 100644 --- a/.github/workflows/update-dependent-repositories-gomod.yaml +++ b/.github/workflows/update-dependent-repositories-gomod.yaml @@ -15,7 +15,7 @@ jobs: strategy: fail-fast: false matrix: - - cmd-forwarder-ovs + - cmd-forwarder-ovs name: Update ${{ matrix.repository }} runs-on: ubuntu-latest if: ${{ github.event.workflow_run.conclusion == 'success' && github.actor == 'nsmbot' || github.event_name == 'push' }} diff --git a/go.mod b/go.mod index 2fe6c98..9793968 100644 --- a/go.mod +++ b/go.mod @@ -1,3 +1,17 @@ module github.com/networkservicemesh/sdk-ovs go 1.16 + +require ( + github.com/Mellanox/sriovnet v1.0.3-0.20210630121212-0453bd4b7fbc + github.com/golang/protobuf v1.5.2 + github.com/networkservicemesh/api v1.0.1-0.20210715134717-6e4a0f8eae3e + github.com/networkservicemesh/sdk v0.5.1-0.20210725184904-92b282404ca1 + github.com/networkservicemesh/sdk-kernel v0.0.0-20210802032320-0b6bf83339f7 + github.com/networkservicemesh/sdk-sriov v0.0.0-20210802032626-e07974262d2a + github.com/ovn-org/ovn-kubernetes/go-controller v0.0.0-20210805134717-4eed62af8e0e + github.com/pkg/errors v0.9.1 + github.com/vishvananda/netlink v1.1.1-0.20210518155637-4cb3795f2ccb + google.golang.org/grpc v1.35.0 + k8s.io/utils v0.0.0-20201110183641-67b214c5f920 +) diff --git a/go.sum b/go.sum new file mode 100644 index 0000000..5834d37 --- /dev/null +++ b/go.sum @@ -0,0 +1,892 @@ +cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= +cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw= +cloud.google.com/go v0.38.0/go.mod h1:990N+gfupTy94rShfmMCWGDn0LpTmnzTp2qbd1dvSRU= +cloud.google.com/go v0.44.1/go.mod h1:iSa0KzasP4Uvy3f1mN/7PiObzGgflwredwwASm/v6AU= 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100644 index 0000000..b574b05 --- /dev/null +++ b/pkg/networkservice/chains/xconnectns/server.go @@ -0,0 +1,181 @@ +// Copyright (c) 2021 Nordix Foundation. +// +// SPDX-License-Identifier: Apache-2.0 +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at: +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// +build linux + +// Package xconnectns provides interpose endpoint implementation for ovs forwarder +// which provides kernel and smartnic endpoints +package xconnectns + +import ( + "context" + "net" + "net/url" + "sync" + + "github.com/networkservicemesh/api/pkg/api/networkservice" + kernelmech "github.com/networkservicemesh/api/pkg/api/networkservice/mechanisms/kernel" + vxlanmech "github.com/networkservicemesh/api/pkg/api/networkservice/mechanisms/vxlan" + "github.com/networkservicemesh/sdk-kernel/pkg/kernel/networkservice/connectioncontextkernel" + "github.com/networkservicemesh/sdk-kernel/pkg/kernel/networkservice/inject" + "github.com/networkservicemesh/sdk-sriov/pkg/networkservice/common/resourcepool" + "github.com/networkservicemesh/sdk-sriov/pkg/networkservice/common/vfconfig" + "github.com/networkservicemesh/sdk-sriov/pkg/sriov" + "github.com/networkservicemesh/sdk-sriov/pkg/sriov/config" + "github.com/networkservicemesh/sdk/pkg/networkservice/chains/client" + "github.com/networkservicemesh/sdk/pkg/networkservice/chains/endpoint" + "github.com/networkservicemesh/sdk/pkg/networkservice/common/clienturl" + "github.com/networkservicemesh/sdk/pkg/networkservice/common/connect" + "github.com/networkservicemesh/sdk/pkg/networkservice/common/heal" + "github.com/networkservicemesh/sdk/pkg/networkservice/common/mechanisms" + "github.com/networkservicemesh/sdk/pkg/networkservice/common/mechanisms/recvfd" + "github.com/networkservicemesh/sdk/pkg/networkservice/common/mechanisms/sendfd" + "github.com/networkservicemesh/sdk/pkg/networkservice/common/mechanismtranslation" + "github.com/networkservicemesh/sdk/pkg/networkservice/core/adapters" + "github.com/networkservicemesh/sdk/pkg/networkservice/core/chain" + "github.com/networkservicemesh/sdk/pkg/networkservice/utils/metadata" + "github.com/networkservicemesh/sdk/pkg/tools/addressof" + "github.com/networkservicemesh/sdk/pkg/tools/token" + "google.golang.org/grpc" + + "github.com/networkservicemesh/sdk-ovs/pkg/networkservice/l2ovsconnect" + "github.com/networkservicemesh/sdk-ovs/pkg/networkservice/mechanisms/kernel" + "github.com/networkservicemesh/sdk-ovs/pkg/networkservice/mechanisms/vxlan" + "github.com/networkservicemesh/sdk-ovs/pkg/tools/utils" +) + +type ovsConnectNSServer struct { + endpoint.Endpoint +} + +// NewSriovServer - returns sriov implementation of the ovsconnectns network service +func NewSriovServer(ctx context.Context, name string, authzServer networkservice.NetworkServiceServer, + tokenGenerator token.GeneratorFunc, clientURL *url.URL, bridgeName string, tunnelIPCidr net.IP, + pciPool resourcepool.PCIPool, resourcePool resourcepool.ResourcePool, sriovConfig *config.Config, + clientDialOptions ...grpc.DialOption) (endpoint.Endpoint, error) { + resourceLock := &sync.Mutex{} + tunnelIP, err := utils.ParseTunnelIP(tunnelIPCidr) + if err != nil { + return nil, err + } + utils.ConfigureOvS(ctx, bridgeName) + vxlanInterfacesMutex := &sync.Mutex{} + vxlanInterfaces := make(map[string]int) + rv := &ovsConnectNSServer{} + additionalFunctionality := []networkservice.NetworkServiceServer{ + metadata.NewServer(), + recvfd.NewServer(), + sendfd.NewServer(), + vfconfig.NewServer(), + // Statically set the url we use to the unix file socket for the NSMgr + clienturl.NewServer(clientURL), + heal.NewServer(ctx, + heal.WithOnHeal(addressof.NetworkServiceClient(adapters.NewServerToClient(rv))), + heal.WithOnRestore(heal.OnRestoreIgnore)), + mechanisms.NewServer(map[string]networkservice.NetworkServiceServer{ + kernelmech.MECHANISM: chain.NewNetworkServiceServer( + kernel.NewServer(bridgeName), + resourcepool.NewServer(sriov.KernelDriver, resourceLock, pciPool, resourcePool, sriovConfig), + ), + vxlanmech.MECHANISM: vxlan.NewServer(tunnelIP, bridgeName, vxlanInterfacesMutex, vxlanInterfaces), + }), + inject.NewServer(), + connectioncontextkernel.NewServer(), + connect.NewServer(ctx, + client.NewClientFactory( + client.WithName(name), + client.WithAdditionalFunctionality( + mechanismtranslation.NewClient(), + l2ovsconnect.NewClient(bridgeName), + connectioncontextkernel.NewClient(), + inject.NewClient(), + // mechanisms + kernel.NewClient(bridgeName), + resourcepool.NewClient(sriov.KernelDriver, resourceLock, pciPool, resourcePool, sriovConfig), + // uncomment when vfconfig client chain element available + // vfconfig.NewClient(), + vxlan.NewClient(tunnelIP, bridgeName, vxlanInterfacesMutex, vxlanInterfaces), + recvfd.NewClient(), + sendfd.NewClient(), + ), + ), + connect.WithDialOptions(clientDialOptions...), + ), + } + + rv.Endpoint = endpoint.NewServer(ctx, tokenGenerator, + endpoint.WithName(name), + endpoint.WithAuthorizeServer(authzServer), + endpoint.WithAdditionalFunctionality(additionalFunctionality...)) + + return rv, nil +} + +// NewKernelServer - returns kernel implementation of the ovsconnectns network service +func NewKernelServer(ctx context.Context, name string, authzServer networkservice.NetworkServiceServer, + tokenGenerator token.GeneratorFunc, clientURL *url.URL, bridgeName string, tunnelIPCidr net.IP, + clientDialOptions ...grpc.DialOption) (endpoint.Endpoint, error) { + tunnelIP, err := utils.ParseTunnelIP(tunnelIPCidr) + if err != nil { + return nil, err + } + utils.ConfigureOvS(ctx, bridgeName) + vxlanInterfacesMutex := &sync.Mutex{} + vxlanInterfaces := make(map[string]int) + rv := &ovsConnectNSServer{} + additionalFunctionality := []networkservice.NetworkServiceServer{ + metadata.NewServer(), + recvfd.NewServer(), + sendfd.NewServer(), + // Statically set the url we use to the unix file socket for the NSMgr + clienturl.NewServer(clientURL), + heal.NewServer(ctx, + heal.WithOnHeal(addressof.NetworkServiceClient(adapters.NewServerToClient(rv))), + heal.WithOnRestore(heal.OnRestoreIgnore)), + mechanisms.NewServer(map[string]networkservice.NetworkServiceServer{ + kernelmech.MECHANISM: chain.NewNetworkServiceServer( + kernel.NewServer(bridgeName), + ), + vxlanmech.MECHANISM: vxlan.NewServer(tunnelIP, bridgeName, vxlanInterfacesMutex, vxlanInterfaces), + }), + inject.NewServer(), + connectioncontextkernel.NewServer(), + connect.NewServer(ctx, + client.NewClientFactory( + client.WithName(name), + client.WithAdditionalFunctionality( + mechanismtranslation.NewClient(), + l2ovsconnect.NewClient(bridgeName), + connectioncontextkernel.NewClient(), + inject.NewClient(), + // mechanisms + kernel.NewClient(bridgeName), + vxlan.NewClient(tunnelIP, bridgeName, vxlanInterfacesMutex, vxlanInterfaces), + recvfd.NewClient(), + sendfd.NewClient(), + ), + ), + connect.WithDialOptions(clientDialOptions...), + ), + } + + rv.Endpoint = endpoint.NewServer(ctx, tokenGenerator, + endpoint.WithName(name), + endpoint.WithAuthorizeServer(authzServer), + endpoint.WithAdditionalFunctionality(additionalFunctionality...)) + + return rv, nil +} diff --git a/pkg/networkservice/l2ovsconnect/client.go b/pkg/networkservice/l2ovsconnect/client.go new file mode 100644 index 0000000..7e7154e --- /dev/null +++ b/pkg/networkservice/l2ovsconnect/client.go @@ -0,0 +1,96 @@ +// Copyright (c) 2021 Nordix Foundation. +// +// SPDX-License-Identifier: Apache-2.0 +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at: +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// Package l2ovsconnect chain element which cross connects both client and endpoint. +// This suppports both local and remote (vxlan) cross connections. +package l2ovsconnect + +import ( + "context" + + "github.com/golang/protobuf/ptypes/empty" + "github.com/networkservicemesh/api/pkg/api/networkservice" + "github.com/networkservicemesh/sdk/pkg/networkservice/core/next" + "github.com/networkservicemesh/sdk/pkg/networkservice/utils/metadata" + "github.com/networkservicemesh/sdk/pkg/tools/log" + "github.com/pkg/errors" + "google.golang.org/grpc" + + "github.com/networkservicemesh/sdk-ovs/pkg/tools/ifnames" +) + +type l2ConnectClient struct { + bridgeName string +} + +// NewClient creates l2 connect client +func NewClient(bridgeName string) networkservice.NetworkServiceClient { + return &l2ConnectClient{bridgeName} +} + +func (c *l2ConnectClient) Request(ctx context.Context, request *networkservice.NetworkServiceRequest, opts ...grpc.CallOption) (*networkservice.Connection, error) { + logger := log.FromContext(ctx).WithField("l2ConnectClient", "Request") + conn, err := next.Client(ctx).Request(ctx, request, opts...) + if err != nil || request.GetConnection().GetNextPathSegment() != nil { + return conn, err + } + + if err := addDel(ctx, logger, c.bridgeName, true); err != nil { + if _, closeErr := c.Close(ctx, conn, opts...); closeErr != nil { + logger.Errorf("failed to close failed connection: %s %s", conn.GetId(), closeErr.Error()) + } + return conn, err + } + return conn, nil +} + +func (c *l2ConnectClient) Close(ctx context.Context, conn *networkservice.Connection, opts ...grpc.CallOption) (*empty.Empty, error) { + logger := log.FromContext(ctx).WithField("l2ConnectClient", "Close") + _, err := next.Client(ctx).Close(ctx, conn, opts...) + + l2ConnectErr := addDel(ctx, logger, c.bridgeName, false) + ifnames.Delete(ctx, metadata.IsClient(c)) + + if err != nil && l2ConnectErr != nil { + return nil, errors.Wrap(err, l2ConnectErr.Error()) + } + if l2ConnectErr != nil { + return nil, l2ConnectErr + } + + return &empty.Empty{}, err +} + +func addDel(ctx context.Context, logger log.Logger, bridgeName string, addDel bool) error { + endpointOvsPortInfo, ok := ifnames.Load(ctx, true) + if !ok { + return nil + } + clientOvsPortInfo, ok := ifnames.Load(ctx, false) + if !ok { + return nil + } + if !endpointOvsPortInfo.IsTunnelPort && !clientOvsPortInfo.IsTunnelPort { + if addDel { + return createLocalCrossConnect(logger, bridgeName, endpointOvsPortInfo, clientOvsPortInfo) + } + return deleteLocalCrossConnect(logger, bridgeName, endpointOvsPortInfo, clientOvsPortInfo) + } + if addDel { + return createRemoteCrossConnect(logger, bridgeName, endpointOvsPortInfo, clientOvsPortInfo) + } + return deleteRemoteCrossConnect(logger, bridgeName, endpointOvsPortInfo, clientOvsPortInfo) +} diff --git a/pkg/networkservice/l2ovsconnect/local.go b/pkg/networkservice/l2ovsconnect/local.go new file mode 100644 index 0000000..9d2b361 --- /dev/null +++ b/pkg/networkservice/l2ovsconnect/local.go @@ -0,0 +1,73 @@ +// Copyright (c) 2021 Nordix Foundation. +// +// SPDX-License-Identifier: Apache-2.0 +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at: +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package l2ovsconnect + +import ( + "fmt" + + "github.com/networkservicemesh/sdk/pkg/tools/log" + "github.com/ovn-org/ovn-kubernetes/go-controller/pkg/util" + + "github.com/networkservicemesh/sdk-ovs/pkg/tools/ifnames" +) + +func createLocalCrossConnect(logger log.Logger, bridgeName string, endpointOvsPortInfo, + clientOvsPortInfo *ifnames.OvsPortInfo) error { + stdout, stderr, err := util.RunOVSOfctl("add-flow", bridgeName, fmt.Sprintf("priority=100, in_port=%d,"+ + " actions=output:%d", endpointOvsPortInfo.PortNo, clientOvsPortInfo.PortNo)) + if err != nil { + logger.Infof("Failed to add flow on %s for port %s stdout: %s"+ + " stderr: %s, error: %v", bridgeName, endpointOvsPortInfo.PortName, stdout, stderr, err) + return err + } + if stderr != "" { + logger.Errorf("Failed to add flow on %s for port %s stdout: %s"+ + " stderr: %s", bridgeName, endpointOvsPortInfo.PortName, stdout, stderr) + } + + stdout, stderr, err = util.RunOVSOfctl("add-flow", bridgeName, fmt.Sprintf("priority=100, in_port=%d,"+ + " actions=output:%d", clientOvsPortInfo.PortNo, endpointOvsPortInfo.PortNo)) + if err != nil { + logger.Errorf("Failed to add flow on %s for port %s stdout: %s"+ + " stderr: %s, error: %v", bridgeName, clientOvsPortInfo.PortName, stdout, stderr, err) + return err + } + + if stderr != "" { + logger.Errorf("Failed to add flow on %s for port %s stdout: %s"+ + " stderr: %s", bridgeName, clientOvsPortInfo.PortName, stdout, stderr) + } + return nil +} + +func deleteLocalCrossConnect(logger log.Logger, bridgeName string, endpointOvsPortInfo, + clientOvsPortInfo *ifnames.OvsPortInfo) error { + stdout, stderr, err := util.RunOVSOfctl("del-flows", bridgeName, fmt.Sprintf("in_port=%d", + endpointOvsPortInfo.PortNo)) + if err != nil { + logger.Errorf("Failed to delete flow on %s for port "+ + "%s, stdout: %q, stderr: %q, error: %v", bridgeName, endpointOvsPortInfo.PortName, stdout, stderr, err) + return err + } + + stdout, stderr, err = util.RunOVSOfctl("del-flows", bridgeName, fmt.Sprintf("in_port=%d", clientOvsPortInfo.PortNo)) + if err != nil { + logger.Errorf("Failed to delete flow on %s for port "+ + "%s, stdout: %q, stderr: %q, error: %v", bridgeName, clientOvsPortInfo.PortName, stdout, stderr, err) + } + return nil +} diff --git a/pkg/networkservice/l2ovsconnect/remote.go b/pkg/networkservice/l2ovsconnect/remote.go new file mode 100644 index 0000000..ccc771d --- /dev/null +++ b/pkg/networkservice/l2ovsconnect/remote.go @@ -0,0 +1,111 @@ +// Copyright (c) 2021 Nordix Foundation. +// +// SPDX-License-Identifier: Apache-2.0 +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at: +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package l2ovsconnect + +import ( + "fmt" + + "github.com/networkservicemesh/sdk/pkg/tools/log" + "github.com/ovn-org/ovn-kubernetes/go-controller/pkg/util" + + "github.com/networkservicemesh/sdk-ovs/pkg/tools/ifnames" +) + +func createRemoteCrossConnect(logger log.Logger, bridgeName string, endpointOvsPortInfo, clientOvsPortInfo *ifnames.OvsPortInfo) error { + var ( + ovsLocalPortNum, ovsTunnelPortNum int + ovsLocalPort, ovsTunnelPort string + vni uint32 + ) + if endpointOvsPortInfo.IsTunnelPort { + ovsLocalPortNum = clientOvsPortInfo.PortNo + ovsLocalPort = clientOvsPortInfo.PortName + ovsTunnelPortNum = endpointOvsPortInfo.PortNo + ovsTunnelPort = endpointOvsPortInfo.PortName + vni = endpointOvsPortInfo.VNI + } else { + ovsLocalPortNum = endpointOvsPortInfo.PortNo + ovsLocalPort = endpointOvsPortInfo.PortName + ovsTunnelPortNum = clientOvsPortInfo.PortNo + ovsTunnelPort = clientOvsPortInfo.PortName + vni = clientOvsPortInfo.VNI + } + + stdout, stderr, err := util.RunOVSOfctl("add-flow", bridgeName, + fmt.Sprintf("priority=100, in_port=%d, actions=set_field:%d->tun_id,output:%d", + ovsLocalPortNum, vni, ovsTunnelPortNum)) + if err != nil { + logger.Errorf("Failed to add flow on %s for port %s stdout: %s"+ + " stderr: %s, error: %v", bridgeName, ovsLocalPort, stdout, stderr, err) + return err + } + if stderr != "" { + logger.Errorf("Failed to add flow on %s for port %s stdout: %s"+ + " stderr: %s", bridgeName, ovsLocalPort, stdout, stderr) + } + + stdout, stderr, err = util.RunOVSOfctl("add-flow", bridgeName, fmt.Sprintf("priority=100, in_port=%d, "+ + "tun_id=%d,actions=output:%d", ovsTunnelPortNum, vni, ovsLocalPortNum)) + if err != nil { + logger.Errorf("Failed to add tunnel flow on %s for port %s stdout: %s"+ + " stderr: %s, error: %v", bridgeName, ovsTunnelPort, stdout, stderr, err) + return err + } + + if stderr != "" { + logger.Errorf("Failed to add tunnel flow on %s for port %s stdout: %s"+ + " stderr: %s", bridgeName, ovsTunnelPort, stdout, stderr) + } + + return nil +} + +func deleteRemoteCrossConnect(logger log.Logger, bridgeName string, endpointOvsPortInfo, clientOvsPortInfo *ifnames.OvsPortInfo) error { + var ( + ovsLocalPortNum, ovsTunnelPortNum int + ovsLocalPort, ovsTunnelPort string + vni uint32 + ) + if endpointOvsPortInfo.IsTunnelPort { + ovsLocalPortNum = clientOvsPortInfo.PortNo + ovsLocalPort = clientOvsPortInfo.PortName + ovsTunnelPortNum = endpointOvsPortInfo.PortNo + ovsTunnelPort = endpointOvsPortInfo.PortName + vni = endpointOvsPortInfo.VNI + } else { + ovsLocalPortNum = endpointOvsPortInfo.PortNo + ovsLocalPort = endpointOvsPortInfo.PortName + ovsTunnelPortNum = clientOvsPortInfo.PortNo + ovsTunnelPort = clientOvsPortInfo.PortName + vni = clientOvsPortInfo.VNI + } + stdout, stderr, err := util.RunOVSOfctl("del-flows", bridgeName, fmt.Sprintf("in_port=%d", ovsLocalPortNum)) + if err != nil { + logger.Errorf("Failed to delete flow on %s for port "+ + "%s, stdout: %q, stderr: %q, error: %v", bridgeName, ovsLocalPort, stdout, stderr, err) + return err + } + + stdout, stderr, err = util.RunOVSOfctl("del-flows", bridgeName, fmt.Sprintf("in_port=%d,tun_id=%d", ovsTunnelPortNum, vni)) + if err != nil { + logger.Errorf("Failed to delete flow on %s for port "+ + "%s on VNI %d, stdout: %q, stderr: %q, error: %v", bridgeName, ovsTunnelPort, vni, stdout, stderr, err) + return err + } + + return nil +} diff --git a/pkg/networkservice/mechanisms/kernel/client.go b/pkg/networkservice/mechanisms/kernel/client.go new file mode 100644 index 0000000..f35debd --- /dev/null +++ b/pkg/networkservice/mechanisms/kernel/client.go @@ -0,0 +1,98 @@ +// Copyright (c) 2021 Nordix Foundation. +// +// SPDX-License-Identifier: Apache-2.0 +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at: +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// +build linux + +// Package kernel implements client and server kernel mechanism chain element supports +// both kernel and smartvf datapath +package kernel + +import ( + "context" + + "github.com/golang/protobuf/ptypes/empty" + "github.com/networkservicemesh/api/pkg/api/networkservice" + "github.com/networkservicemesh/api/pkg/api/networkservice/mechanisms/cls" + "github.com/networkservicemesh/api/pkg/api/networkservice/mechanisms/common" + "github.com/networkservicemesh/api/pkg/api/networkservice/mechanisms/kernel" + "github.com/networkservicemesh/sdk/pkg/networkservice/core/next" + "github.com/networkservicemesh/sdk/pkg/networkservice/utils/metadata" + "github.com/networkservicemesh/sdk/pkg/tools/log" + "github.com/pkg/errors" + "google.golang.org/grpc" + + "github.com/networkservicemesh/sdk-ovs/pkg/tools/ifnames" +) + +type kernelClient struct { + bridgeName string +} + +// NewClient returns a client chain element implementing kernel mechanism with veth pair or smartvf +func NewClient(bridgeName string) networkservice.NetworkServiceClient { + return &kernelClient{bridgeName} +} + +func (c *kernelClient) Request(ctx context.Context, request *networkservice.NetworkServiceRequest, opts ...grpc.CallOption) (*networkservice.Connection, error) { + logger := log.FromContext(ctx).WithField("kernelClient", "Request") + request.MechanismPreferences = append(request.MechanismPreferences, &networkservice.Mechanism{ + Cls: cls.LOCAL, + Type: kernel.MECHANISM, + }) + conn, err := next.Client(ctx).Request(ctx, request, opts...) + if err != nil || request.GetConnection().GetNextPathSegment() != nil { + return conn, err + } + _, exists := conn.GetMechanism().GetParameters()[common.PCIAddressKey] + if exists { + if err = setupVF(ctx, logger, conn, c.bridgeName, metadata.IsClient(c)); err != nil { + if _, closeErr := c.Close(ctx, conn, opts...); closeErr != nil { + logger.Errorf("failed to close failed connection: %s %s", conn.GetId(), closeErr.Error()) + } + } + } else { + if err = setupVeth(ctx, logger, conn, c.bridgeName, metadata.IsClient(c)); err != nil { + if _, closeErr := c.Close(ctx, conn, opts...); closeErr != nil { + logger.Errorf("failed to close failed connection: %s %s", conn.GetId(), closeErr.Error()) + } + } + } + return conn, err +} + +func (c *kernelClient) Close(ctx context.Context, conn *networkservice.Connection, opts ...grpc.CallOption) (*empty.Empty, error) { + logger := log.FromContext(ctx).WithField("kernelClient", "Close") + _, err := next.Client(ctx).Close(ctx, conn, opts...) + + var kernelMechErr error + ovsPortInfo, exists := ifnames.Load(ctx, metadata.IsClient(c)) + if exists { + if !ovsPortInfo.IsVfRepresentor { + kernelMechErr = resetVeth(logger, conn, c.bridgeName, metadata.IsClient(c)) + } else { + kernelMechErr = resetVF(logger, ovsPortInfo, c.bridgeName) + } + } + + if err != nil && kernelMechErr != nil { + return nil, errors.Wrap(err, kernelMechErr.Error()) + } + if kernelMechErr != nil { + return nil, kernelMechErr + } + + return &empty.Empty{}, err +} diff --git a/pkg/networkservice/mechanisms/kernel/common.go b/pkg/networkservice/mechanisms/kernel/common.go new file mode 100644 index 0000000..9c6a277 --- /dev/null +++ b/pkg/networkservice/mechanisms/kernel/common.go @@ -0,0 +1,152 @@ +// Copyright (c) 2021 Nordix Foundation. +// +// SPDX-License-Identifier: Apache-2.0 +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at: +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// +build linux + +package kernel + +import ( + "context" + "fmt" + "strings" + + "github.com/networkservicemesh/api/pkg/api/networkservice" + "github.com/networkservicemesh/api/pkg/api/networkservice/mechanisms/kernel" + "github.com/networkservicemesh/sdk/pkg/tools/log" + "github.com/ovn-org/ovn-kubernetes/go-controller/pkg/util" + "github.com/pkg/errors" + "github.com/vishvananda/netlink" + + "github.com/networkservicemesh/sdk-ovs/pkg/tools/ifnames" + ovsutil "github.com/networkservicemesh/sdk-ovs/pkg/tools/utils" +) + +const ( + srcPrefix = "tapsrc" + dstPrefix = "tapdst" + cVETHMTU = 16000 +) + +func setupVeth(ctx context.Context, logger log.Logger, conn *networkservice.Connection, bridgeName string, isClient bool) error { + var mechanism *kernel.Mechanism + if mechanism = kernel.ToMechanism(conn.GetMechanism()); mechanism == nil { + return nil + } + if _, ok := ifnames.Load(ctx, isClient); ok { + return nil + } + contIfName := mechanism.GetInterfaceName() + hostIfName := GetOvsInterfaceName(conn, isClient) + if err := createInterfaces(contIfName, hostIfName); err != nil { + return err + } + if err := SetInterfacesUp(logger, contIfName, hostIfName); err != nil { + return err + } + stdout, stderr, err := util.RunOVSVsctl("--", "--may-exist", "add-port", bridgeName, hostIfName) + if err != nil { + logger.Errorf("Failed to add port %s to %s, stdout: %q, stderr: %q,"+ + " error: %v", hostIfName, bridgeName, stdout, stderr, err) + return err + } + portNo, err := ovsutil.GetInterfaceOfPort(logger, hostIfName) + if err != nil { + logger.Errorf("Failed to get OVS port number for %s interface,"+ + " error: %v", hostIfName, err) + return err + } + ifnames.Store(ctx, isClient, &ifnames.OvsPortInfo{PortName: hostIfName, PortNo: portNo, IsTunnelPort: false}) + return nil +} + +func resetVeth(logger log.Logger, conn *networkservice.Connection, bridgeName string, isClient bool) error { + ifaceName := GetOvsInterfaceName(conn, isClient) + /* delete the port from ovs bridge */ + stdout, stderr, err := util.RunOVSVsctl("del-port", bridgeName, ifaceName) + if err != nil { + logger.Errorf("Failed to delete port %s from %s, stdout: %q, stderr: %q,"+ + " error: %v", ifaceName, bridgeName, stdout, stderr, err) + } + + /* Get a link object for the interface */ + ifaceLink, err := netlink.LinkByName(ifaceName) + if err != nil { + if strings.Contains(err.Error(), "Link not found") { + // link is aleady deleted + return nil + } + return errors.Errorf("failed to get link for %q - %v", ifaceName, err) + } + + /* Delete the VETH pair - host namespace */ + if err := netlink.LinkDel(ifaceLink); err != nil { + return errors.Errorf("local: failed to delete the VETH pair - %v", err) + } + return nil +} + +func createInterfaces(ifName, ovSPortName string) error { + /* Create the VETH pair - host namespace */ + if err := netlink.LinkAdd(newVETH(ifName, ovSPortName)); err != nil { + return errors.Errorf("failed to create VETH pair - %v", err) + } + return nil +} + +// SetInterfacesUp - make the interfaces state to up +func SetInterfacesUp(logger log.Logger, ifaceNames ...string) error { + for _, ifaceName := range ifaceNames { + /* Get a link for the interface name */ + link, err := netlink.LinkByName(ifaceName) + if err != nil { + logger.Errorf("local: failed to lookup %q, %v", ifaceName, err) + return err + } + /* Bring the interface Up */ + if err = netlink.LinkSetUp(link); err != nil { + logger.Errorf("local: failed to bring %q up: %v", ifaceName, err) + return err + } + } + return nil +} + +func newVETH(srcName, dstName string) *netlink.Veth { + /* Populate the VETH interface configuration */ + return &netlink.Veth{ + LinkAttrs: netlink.LinkAttrs{ + Name: srcName, + MTU: cVETHMTU, + }, + PeerName: dstName, + } +} + +// GetOvsInterfaceName get ovs interface name for the given connection. +func GetOvsInterfaceName(conn *networkservice.Connection, isClient bool) string { + namingConn := conn.Clone() + prefix := srcPrefix + namingConn.Id = namingConn.GetPrevPathSegment().GetId() + if isClient { + prefix = dstPrefix + namingConn.Id = namingConn.GetNextPathSegment().GetId() + } + name := fmt.Sprintf("%s-%s", prefix, conn.GetId()) + if len(name) > kernel.LinuxIfMaxLength { + name = name[:kernel.LinuxIfMaxLength] + } + return name +} diff --git a/pkg/networkservice/mechanisms/kernel/server.go b/pkg/networkservice/mechanisms/kernel/server.go new file mode 100644 index 0000000..d814d4b --- /dev/null +++ b/pkg/networkservice/mechanisms/kernel/server.go @@ -0,0 +1,91 @@ +// Copyright (c) 2021 Nordix Foundation. +// +// SPDX-License-Identifier: Apache-2.0 +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at: +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// +build linux + +package kernel + +import ( + "context" + + "github.com/golang/protobuf/ptypes/empty" + "github.com/networkservicemesh/api/pkg/api/networkservice" + "github.com/networkservicemesh/sdk-sriov/pkg/networkservice/common/resourcepool" + "github.com/networkservicemesh/sdk/pkg/networkservice/core/next" + "github.com/networkservicemesh/sdk/pkg/networkservice/utils/metadata" + "github.com/networkservicemesh/sdk/pkg/tools/log" + "github.com/pkg/errors" + + "github.com/networkservicemesh/sdk-ovs/pkg/tools/ifnames" +) + +type kernelServer struct { + bridgeName string +} + +// NewServer - return a new Server chain element implementing the kernel mechanism with veth pair or smartvf +func NewServer(bridgeName string) networkservice.NetworkServiceServer { + return &kernelServer{bridgeName} +} + +// NewClient create a kernel server chain element which would be useful to do network plumbing +// for service client container +func (k *kernelServer) Request(ctx context.Context, request *networkservice.NetworkServiceRequest) (*networkservice.Connection, error) { + logger := log.FromContext(ctx).WithField("kernelServer", "Request") + isEstablished := request.GetConnection().GetNextPathSegment() != nil + _, exists := request.GetConnection().GetMechanism().GetParameters()[resourcepool.TokenIDKey] + if !exists && !isEstablished { + if err := setupVeth(ctx, logger, request.Connection, k.bridgeName, metadata.IsClient(k)); err != nil { + _ = resetVeth(logger, request.Connection, k.bridgeName, metadata.IsClient(k)) + return nil, err + } + } + conn, err := next.Server(ctx).Request(ctx, request) + if err != nil && !exists && !isEstablished { + _ = resetVeth(logger, request.Connection, k.bridgeName, metadata.IsClient(k)) + return nil, err + } + if exists && !isEstablished { + if vfErr := setupVF(ctx, logger, request.Connection, k.bridgeName, metadata.IsClient(k)); vfErr != nil { + return nil, err + } + } + return conn, err +} + +func (k *kernelServer) Close(ctx context.Context, conn *networkservice.Connection) (*empty.Empty, error) { + logger := log.FromContext(ctx).WithField("kernelServer", "Close") + _, err := next.Server(ctx).Close(ctx, conn) + + var kernelServerErr error + ovsPortInfo, exists := ifnames.LoadAndDelete(ctx, metadata.IsClient(k)) + if exists { + if !ovsPortInfo.IsVfRepresentor { + kernelServerErr = resetVeth(logger, conn, k.bridgeName, metadata.IsClient(k)) + } else { + kernelServerErr = resetVF(logger, ovsPortInfo, k.bridgeName) + } + } + + if err != nil && kernelServerErr != nil { + return nil, errors.Wrap(err, kernelServerErr.Error()) + } + if kernelServerErr != nil { + return nil, kernelServerErr + } + + return &empty.Empty{}, err +} diff --git a/pkg/networkservice/mechanisms/kernel/sriov.go b/pkg/networkservice/mechanisms/kernel/sriov.go new file mode 100644 index 0000000..4ef0310 --- /dev/null +++ b/pkg/networkservice/mechanisms/kernel/sriov.go @@ -0,0 +1,77 @@ +// Copyright (c) 2021 Nordix Foundation. +// +// SPDX-License-Identifier: Apache-2.0 +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at: +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// +build linux + +package kernel + +import ( + "context" + + "github.com/Mellanox/sriovnet" + "github.com/networkservicemesh/api/pkg/api/networkservice" + "github.com/networkservicemesh/api/pkg/api/networkservice/mechanisms/kernel" + "github.com/networkservicemesh/sdk-kernel/pkg/kernel/networkservice/vfconfig" + "github.com/networkservicemesh/sdk/pkg/tools/log" + "github.com/ovn-org/ovn-kubernetes/go-controller/pkg/util" + + "github.com/networkservicemesh/sdk-ovs/pkg/tools/ifnames" + ovsutil "github.com/networkservicemesh/sdk-ovs/pkg/tools/utils" +) + +func setupVF(ctx context.Context, logger log.Logger, conn *networkservice.Connection, bridgeName string, isClient bool) error { + var mechanism *kernel.Mechanism + if mechanism = kernel.ToMechanism(conn.GetMechanism()); mechanism == nil { + return nil + } + if _, ok := ifnames.Load(ctx, isClient); ok { + return nil + } + vfConfig := vfconfig.Config(ctx) + // get smart VF representor interface. This is a host net device which represents + // smart VF attached inside the container by device plugin. It can be considered + // as one end of veth pair whereas other end is smartVF. The VF representor would + // get added into ovs bridge for the control plane configuration. + vfRepresentor, err := sriovnet.GetVfRepresentor(vfConfig.PFInterfaceName, vfConfig.VFNum) + if err != nil { + return err + } + stdout, stderr, err := util.RunOVSVsctl("--", "--may-exist", "add-port", bridgeName, vfRepresentor) + if err != nil { + logger.Errorf("Failed to add representor port %s to %s, stdout: %q, stderr: %q,"+ + " error: %v", vfRepresentor, bridgeName, stdout, stderr, err) + return err + } + portNo, err := ovsutil.GetInterfaceOfPort(logger, vfRepresentor) + if err != nil { + logger.Errorf("Failed to get OVS port number for %s interface,"+ + " error: %v", vfRepresentor, err) + return err + } + ifnames.Store(ctx, isClient, &ifnames.OvsPortInfo{PortName: vfRepresentor, PortNo: portNo, IsVfRepresentor: true}) + return nil +} + +func resetVF(logger log.Logger, portInfo *ifnames.OvsPortInfo, bridgeName string) error { + /* delete the port from ovs bridge */ + stdout, stderr, err := util.RunOVSVsctl("del-port", bridgeName, portInfo.PortName) + if err != nil { + logger.Errorf("Failed to delete port %s from %s, stdout: %q, stderr: %q,"+ + " error: %v", portInfo.PortName, bridgeName, stdout, stderr, err) + return err + } + return nil +} diff --git a/pkg/networkservice/mechanisms/vxlan/client.go b/pkg/networkservice/mechanisms/vxlan/client.go new file mode 100644 index 0000000..3c203b7 --- /dev/null +++ b/pkg/networkservice/mechanisms/vxlan/client.go @@ -0,0 +1,85 @@ +// Copyright (c) 2021 Nordix Foundation. +// +// SPDX-License-Identifier: Apache-2.0 +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at: +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// Package vxlan implements vxlan remote mechanism client and server chain element +package vxlan + +import ( + "context" + "net" + "sync" + + "github.com/golang/protobuf/ptypes/empty" + "github.com/networkservicemesh/api/pkg/api/networkservice" + "github.com/networkservicemesh/api/pkg/api/networkservice/mechanisms/cls" + "github.com/networkservicemesh/api/pkg/api/networkservice/mechanisms/vxlan" + "github.com/networkservicemesh/sdk/pkg/networkservice/common/mechanisms/vxlan/vni" + "github.com/networkservicemesh/sdk/pkg/networkservice/core/chain" + "github.com/networkservicemesh/sdk/pkg/networkservice/core/next" + "github.com/networkservicemesh/sdk/pkg/tools/log" + "github.com/pkg/errors" + "google.golang.org/grpc" +) + +type vxlanClient struct { + bridgeName string + vxlanInterfacesMutex sync.Locker + vxlanInterfacesMap map[string]int +} + +// NewClient returns a Vxlan client chain element +func NewClient(tunnelIP net.IP, bridgeName string, mutex sync.Locker, vxlanRefCountMap map[string]int) networkservice.NetworkServiceClient { + return chain.NewNetworkServiceClient( + &vxlanClient{ + bridgeName: bridgeName, vxlanInterfacesMutex: mutex, vxlanInterfacesMap: vxlanRefCountMap, + }, + vni.NewClient(tunnelIP), + ) +} + +func (c *vxlanClient) Request(ctx context.Context, request *networkservice.NetworkServiceRequest, opts ...grpc.CallOption) (*networkservice.Connection, error) { + logger := log.FromContext(ctx).WithField("vxlanClient", "Request") + request.MechanismPreferences = append(request.MechanismPreferences, &networkservice.Mechanism{ + Cls: cls.REMOTE, + Type: vxlan.MECHANISM, + }) + conn, err := next.Client(ctx).Request(ctx, request, opts...) + if err != nil || request.GetConnection().GetNextPathSegment() != nil { + return conn, err + } + if err = add(ctx, logger, conn, c.bridgeName, c.vxlanInterfacesMutex, c.vxlanInterfacesMap, true); err != nil { + _ = remove(conn, c.bridgeName, c.vxlanInterfacesMutex, c.vxlanInterfacesMap, true) + if _, closeErr := next.Client(ctx).Close(ctx, conn, opts...); closeErr != nil { + logger.Errorf("failed to close failed connection: %s %s", conn.GetId(), closeErr.Error()) + } + } + return conn, err +} + +func (c *vxlanClient) Close(ctx context.Context, conn *networkservice.Connection, opts ...grpc.CallOption) (*empty.Empty, error) { + _, err := next.Client(ctx).Close(ctx, conn, opts...) + + vxlanClientErr := remove(conn, c.bridgeName, c.vxlanInterfacesMutex, c.vxlanInterfacesMap, true) + + if err != nil && vxlanClientErr != nil { + return nil, errors.Wrap(err, vxlanClientErr.Error()) + } + if vxlanClientErr != nil { + return nil, vxlanClientErr + } + + return &empty.Empty{}, err +} diff --git a/pkg/networkservice/mechanisms/vxlan/common.go b/pkg/networkservice/mechanisms/vxlan/common.go new file mode 100644 index 0000000..1e0f3d3 --- /dev/null +++ b/pkg/networkservice/mechanisms/vxlan/common.go @@ -0,0 +1,127 @@ +// Copyright (c) 2021 Nordix Foundation. +// +// SPDX-License-Identifier: Apache-2.0 +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at: +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package vxlan + +import ( + "context" + "net" + "strings" + "sync" + + "github.com/networkservicemesh/api/pkg/api/networkservice" + "github.com/networkservicemesh/api/pkg/api/networkservice/mechanisms/vxlan" + "github.com/networkservicemesh/sdk/pkg/tools/log" + "github.com/ovn-org/ovn-kubernetes/go-controller/pkg/util" + "github.com/pkg/errors" + + "github.com/networkservicemesh/sdk-ovs/pkg/tools/ifnames" + ovsutil "github.com/networkservicemesh/sdk-ovs/pkg/tools/utils" +) + +func add(ctx context.Context, logger log.Logger, conn *networkservice.Connection, bridgeName string, + vxlanInterfacesMutex sync.Locker, vxlanRefCountMap map[string]int, isClient bool) error { + if mechanism := vxlan.ToMechanism(conn.GetMechanism()); mechanism != nil { + if _, ok := ifnames.Load(ctx, isClient); ok { + return nil + } + + if mechanism.SrcIP() == nil { + return errors.Errorf("no vxlan SrcIP not provided") + } + if mechanism.DstIP() == nil { + return errors.Errorf("no vxlan DstIP not provided") + } + var egressIP, remoteIP net.IP + if !isClient { + egressIP = mechanism.DstIP() + remoteIP = mechanism.SrcIP() + } else { + remoteIP = mechanism.DstIP() + egressIP = mechanism.SrcIP() + } + ovsTunnelName := getTunnelPortName(remoteIP.String()) + vxlanInterfacesMutex.Lock() + defer vxlanInterfacesMutex.Unlock() + if _, exists := vxlanRefCountMap[ovsTunnelName]; !exists { + if err := newVXLAN(bridgeName, ovsTunnelName, egressIP, remoteIP); err != nil { + return err + } + vxlanRefCountMap[ovsTunnelName] = 0 + } + vxlanRefCountMap[ovsTunnelName]++ + ovsTunnelPortNum, err := ovsutil.GetInterfaceOfPort(logger, ovsTunnelName) + if err != nil { + return err + } + ifnames.Store(ctx, isClient, &ifnames.OvsPortInfo{PortName: ovsTunnelName, + PortNo: ovsTunnelPortNum, IsTunnelPort: true, VNI: mechanism.VNI()}) + } + return nil +} + +func getTunnelPortName(remoteIP string) string { + return "v" + strings.ReplaceAll(remoteIP, ".", "") +} + +func remove(conn *networkservice.Connection, bridgeName string, vxlanInterfacesMutex sync.Locker, + vxlanRefCountMap map[string]int, isClient bool) error { + if mechanism := vxlan.ToMechanism(conn.GetMechanism()); mechanism != nil { + var remoteIP net.IP + if !isClient { + remoteIP = mechanism.SrcIP() + } else { + remoteIP = mechanism.DstIP() + } + ovsTunnelName := getTunnelPortName(remoteIP.String()) + vxlanInterfacesMutex.Lock() + defer vxlanInterfacesMutex.Unlock() + if count := vxlanRefCountMap[ovsTunnelName]; count == 1 { + if err := deleteVXLAN(bridgeName, ovsTunnelName); err != nil { + return errors.Wrapf(err, "failed to delete VXLAN interface") + } + delete(vxlanRefCountMap, ovsTunnelName) + } else if count := vxlanRefCountMap[ovsTunnelName]; count > 1 { + vxlanRefCountMap[ovsTunnelName]-- + } + } + return nil +} + +// newVXLAN creates a VXLAN interface instance in OVS +func newVXLAN(bridgeName, ovsTunnelName string, egressIP, remoteIP net.IP) error { + /* Populate the VXLAN interface configuration */ + localOptions := "options:local_ip=" + egressIP.String() + remoteOptions := "options:remote_ip=" + remoteIP.String() + stdout, stderr, err := util.RunOVSVsctl("--", "--may-exist", "add-port", bridgeName, ovsTunnelName, + "--", "set", "interface", ovsTunnelName, "type=vxlan", localOptions, + remoteOptions, "options:key=flow") + if err != nil { + return errors.Errorf("Failed to add port %s to %s, stdout: %q, stderr: %q,"+ + " error: %v", ovsTunnelName, bridgeName, stdout, stderr, err) + } + return nil +} + +func deleteVXLAN(bridgeName, ovsTunnelPort string) error { + /* Populate the VXLAN interface configuration */ + stdout, stderr, err := util.RunOVSVsctl("del-port", bridgeName, ovsTunnelPort) + if err != nil { + return errors.Errorf("Failed to delete port %s to %s, stdout: %q, stderr: %q,"+ + " error: %v", ovsTunnelPort, bridgeName, stdout, stderr, err) + } + return nil +} diff --git a/pkg/networkservice/mechanisms/vxlan/server.go b/pkg/networkservice/mechanisms/vxlan/server.go new file mode 100644 index 0000000..a4841a6 --- /dev/null +++ b/pkg/networkservice/mechanisms/vxlan/server.go @@ -0,0 +1,87 @@ +// Copyright (c) 2021 Nordix Foundation. +// +// SPDX-License-Identifier: Apache-2.0 +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at: +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package vxlan + +import ( + "context" + "net" + "sync" + + "github.com/golang/protobuf/ptypes/empty" + "github.com/pkg/errors" + + "github.com/networkservicemesh/sdk/pkg/networkservice/core/chain" + "github.com/networkservicemesh/sdk/pkg/networkservice/core/next" + "github.com/networkservicemesh/sdk/pkg/networkservice/utils/metadata" + "github.com/networkservicemesh/sdk/pkg/tools/log" + + "github.com/networkservicemesh/sdk-ovs/pkg/tools/ifnames" + + "github.com/networkservicemesh/api/pkg/api/networkservice" + + "github.com/networkservicemesh/sdk/pkg/networkservice/common/mechanisms/vxlan/vni" +) + +type vxlanServer struct { + bridgeName string + vxlanInterfacesMutex sync.Locker + vxlanInterfacesMap map[string]int +} + +// NewServer - returns a new server for the vxlan remote mechanism +func NewServer(tunnelIP net.IP, bridgeName string, mutex sync.Locker, vxlanRefCountMap map[string]int) networkservice.NetworkServiceServer { + return chain.NewNetworkServiceServer( + vni.NewServer(tunnelIP), + &vxlanServer{ + bridgeName: bridgeName, vxlanInterfacesMutex: mutex, vxlanInterfacesMap: vxlanRefCountMap, + }, + ) +} + +func (v *vxlanServer) Request(ctx context.Context, request *networkservice.NetworkServiceRequest) (*networkservice.Connection, error) { + logger := log.FromContext(ctx).WithField("vxlanServer", "Request") + + isEstablished := request.GetConnection().GetNextPathSegment() != nil + + if !isEstablished { + if err := add(ctx, logger, request.GetConnection(), v.bridgeName, v.vxlanInterfacesMutex, v.vxlanInterfacesMap, metadata.IsClient(v)); err != nil { + return nil, err + } + } + + conn, err := next.Server(ctx).Request(ctx, request) + if err != nil && !isEstablished { + _ = remove(conn, v.bridgeName, v.vxlanInterfacesMutex, v.vxlanInterfacesMap, metadata.IsClient(v)) + return conn, err + } + + return conn, err +} + +func (v *vxlanServer) Close(ctx context.Context, conn *networkservice.Connection) (*empty.Empty, error) { + _, err := next.Server(ctx).Close(ctx, conn) + vxlanServerErr := remove(conn, v.bridgeName, v.vxlanInterfacesMutex, v.vxlanInterfacesMap, metadata.IsClient(v)) + ifnames.Delete(ctx, metadata.IsClient(v)) + + if err != nil && vxlanServerErr != nil { + return nil, errors.Wrap(err, vxlanServerErr.Error()) + } + if vxlanServerErr != nil { + return nil, vxlanServerErr + } + return &empty.Empty{}, err +} diff --git a/pkg/tools/ifnames/ifnames.go b/pkg/tools/ifnames/ifnames.go new file mode 100644 index 0000000..322a027 --- /dev/null +++ b/pkg/tools/ifnames/ifnames.go @@ -0,0 +1,77 @@ +// Copyright (c) 2021 Nordix Foundation. +// +// SPDX-License-Identifier: Apache-2.0 +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at: +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// Package ifnames provides caching facilty for ovs port info using +// metadata store. This is mainly used by mechanism and l2ovsconnect +// chain elements +package ifnames + +import ( + "context" + + "github.com/networkservicemesh/sdk/pkg/networkservice/utils/metadata" +) + +type key struct{} + +// OvsPortInfo ovs port info container +type OvsPortInfo struct { + PortName string + PortNo int + IsTunnelPort bool + IsVfRepresentor bool + VNI uint32 +} + +// Store stores ovsPortInfo for the given cross connect, isClient identfies which connection it is. +func Store(ctx context.Context, isClient bool, ovsPortInfo *OvsPortInfo) { + metadata.Map(ctx, isClient).Store(key{}, ovsPortInfo) +} + +// Delete deletes a specific ovsPortInfo from cache +func Delete(ctx context.Context, isClient bool) { + metadata.Map(ctx, isClient).Delete(key{}) +} + +// Load retrieves ovsPortInfo from cache for a given connection +func Load(ctx context.Context, isClient bool) (value *OvsPortInfo, ok bool) { + rawValue, ok := metadata.Map(ctx, isClient).Load(key{}) + if !ok { + return + } + value, ok = rawValue.(*OvsPortInfo) + return value, ok +} + +// LoadOrStore retrievs ovsPortInfo from cache. If it doesn't exist, store it with given ovsPortInfo +func LoadOrStore(ctx context.Context, isClient bool, ovsPortInfo *OvsPortInfo) (value *OvsPortInfo, ok bool) { + rawValue, ok := metadata.Map(ctx, isClient).LoadOrStore(key{}, ovsPortInfo) + if !ok { + return ovsPortInfo, ok + } + value, ok = rawValue.(*OvsPortInfo) + return value, ok +} + +// LoadAndDelete retrievs ovsPortInfo from cache and also also delete it from the cache. +func LoadAndDelete(ctx context.Context, isClient bool) (value *OvsPortInfo, ok bool) { + rawValue, ok := metadata.Map(ctx, isClient).LoadAndDelete(key{}) + if !ok { + return + } + value, ok = rawValue.(*OvsPortInfo) + return value, ok +} diff --git a/pkg/tools/utils/ip.go b/pkg/tools/utils/ip.go new file mode 100644 index 0000000..322af99 --- /dev/null +++ b/pkg/tools/utils/ip.go @@ -0,0 +1,52 @@ +// Copyright (c) 2021 Nordix Foundation. +// +// SPDX-License-Identifier: Apache-2.0 +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at: +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +// Package utils provides helper methods related to ovs and ip parsing +package utils + +import ( + "errors" + "net" +) + +// ParseTunnelIP parses and maps the given ip cidr with available network interface +func ParseTunnelIP(srcIP net.IP) (net.IP, error) { + ifaces, err := net.Interfaces() + if err != nil { + return nil, err + } + + for _, iface := range ifaces { + addrs, err := iface.Addrs() + if err != nil { + continue + } + for _, addr := range addrs { + switch v := addr.(type) { + case *net.IPNet: + ipAddr := v.IP + mask := v.Mask + ipMask := ipAddr.Mask(mask) + if v.IP.Equal(srcIP) || ipMask.Equal(srcIP) { + return v.IP, nil + } + default: + continue + } + } + } + return nil, errors.New("error in parsing tunnel ip address") +} diff --git a/pkg/tools/utils/ovs.go b/pkg/tools/utils/ovs.go new file mode 100644 index 0000000..0d67453 --- /dev/null +++ b/pkg/tools/utils/ovs.go @@ -0,0 +1,77 @@ +// Copyright (c) 2021 Nordix Foundation. +// +// SPDX-License-Identifier: Apache-2.0 +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at: +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +package utils + +import ( + "context" + "strconv" + "time" + + "github.com/networkservicemesh/sdk/pkg/tools/log" + "github.com/ovn-org/ovn-kubernetes/go-controller/pkg/util" + kexec "k8s.io/utils/exec" +) + +// GetInterfaceOfPort get Port number from Interface name in OVS +func GetInterfaceOfPort(logger log.Logger, interfaceName string) (int, error) { + var portNo, count int + count = 5 + for count > 0 { + ofPort, stdErr, err := util.RunOVSVsctl("--if-exists", "get", "interface", interfaceName, "ofport") + if err != nil { + return -1, err + } + if stdErr != "" { + logger.Infof("error occurred while retrieving of port for interface %s - %s", interfaceName, stdErr) + } + portNo, err = strconv.Atoi(ofPort) + if err != nil { + return -1, err + } + if portNo == 0 { + logger.Infof("got port number %d for interface %s, retrying", portNo, interfaceName) + count-- + time.Sleep(500 * time.Millisecond) + continue + } else { + break + } + } + return portNo, nil +} + +// ConfigureOvS creates ovs bridge and make it as an integration bridge +func ConfigureOvS(ctx context.Context, bridgeName string) { + // Initialize the ovs utility wrapper. + exec := kexec.New() + if err := util.SetExec(exec); err != nil { + log.FromContext(ctx).Warnf("failed to initialize ovs exec helper: %v", err) + } + + // Create ovs bridge for client and endpoint connections + stdout, stderr, err := util.RunOVSVsctl("--", "--may-exist", "add-br", bridgeName) + if err != nil { + log.FromContext(ctx).Warnf("Failed to add bridge %s, stdout: %q, stderr: %q, error: %v", bridgeName, stdout, stderr, err) + } + + // Clean the flows from the above created ovs bridge + stdout, stderr, err = util.RunOVSOfctl("del-flows", bridgeName) + if err != nil { + log.FromContext(ctx).Warnf("Failed to cleanup flows on %s "+ + "stdout: %q, stderr: %q, error: %v", bridgeName, stdout, stderr, err) + } +}