build ovsdpdk cni during deployment

Change-Id: I1c3d4b44bab0d75fae93f7fabce7bcfdcc3b9f35
Signed-off-by: Guo Ruijing <ruijing.guo@intel.com>

1 files changed, 107 insertions, 0 deletions

diff --git a/src/cni/ovsdpdk/ovsdpdk.go b/src/cni/ovsdpdk/ovsdpdk.go
new file mode 100644
index 0000000..4c388b5
--- /dev/null
+++ b/src/cni/ovsdpdk/ovsdpdk.go
@@ -0,0 +1,107 @@
+// Copyright 2017 4 CNI authors
+//
+// 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 main
+
+import (
+	"encoding/json"
+	"errors"
+	"fmt"
+	"runtime"
+        "os/exec"
+	"github.com/containernetworking/cni/pkg/skel"
+	"github.com/containernetworking/cni/pkg/types"
+	"github.com/containernetworking/cni/pkg/types/current"
+	"github.com/containernetworking/cni/pkg/version"
+	"github.com/containernetworking/plugins/pkg/ipam"
+)
+
+const defaultBrName = "br-dpdk"
+
+type NetConf struct {
+	types.NetConf
+	BrName       string `json:"bridge"`
+}
+
+func init() {
+	// this ensures that main runs only on main thread (thread group leader).
+	// since namespace ops (unshare, setns) are done for a single thread, we
+	// must ensure that the goroutine does not jump from OS thread to thread
+	runtime.LockOSThread()
+}
+
+func loadNetConf(bytes []byte) (*NetConf, string, error) {
+	n := &NetConf{
+		BrName: defaultBrName,
+	}
+	if err := json.Unmarshal(bytes, n); err != nil {
+		return nil, "", fmt.Errorf("failed to load netconf: %v", err)
+	}
+	return n, n.CNIVersion, nil
+}
+
+func setupVhostUser(args *skel.CmdArgs, types string) error {
+    exec.Command("/bin/bash", "/opt/cni/bin/setup_ovsdpdk.sh", args.Netns, args.ContainerID, types).Output()
+    return nil
+}
+
+func cmdAdd(args *skel.CmdArgs) error {
+	n, cniVersion, err := loadNetConf(args.StdinData)
+	if err != nil {
+		return err
+	}
+
+	// run the IPAM plugin and get back the config to apply
+	r, err := ipam.ExecAdd(n.IPAM.Type, args.StdinData)
+	if err != nil {
+		return err
+	}
+
+	// Convert whatever the IPAM result was into the current Result type
+	result, err := current.NewResultFromResult(r)
+	if err != nil {
+		return err
+	}
+
+	if len(result.IPs) == 0 {
+		return errors.New("IPAM plugin returned missing IP config")
+	}
+
+        setupVhostUser(args, result.String())
+
+        return types.PrintResult(result, cniVersion)
+}
+
+func tearDownVhostUser(args *skel.CmdArgs) error {
+    exec.Command("/bin/bash", "/opt/cni/bin/teardown_ovsdpdk.sh", args.Netns, args.ContainerID).Output()
+    return nil
+}
+
+func cmdDel(args *skel.CmdArgs) error {
+        n, _, err := loadNetConf(args.StdinData)
+        if err != nil {
+                return err
+        }
+
+        if err := ipam.ExecDel(n.IPAM.Type, args.StdinData); err != nil {
+                return err
+        }
+
+        tearDownVhostUser(args)
+        return err
+}
+
+func main() {
+	skel.PluginMain(cmdAdd, cmdDel, version.All)
+}