107 lines
3.7 KiB
Go
107 lines
3.7 KiB
Go
// Copyright 2020 The gVisor 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 testbench
|
|
|
|
import (
|
|
"flag"
|
|
"fmt"
|
|
"math/rand"
|
|
"net"
|
|
"os/exec"
|
|
"testing"
|
|
"time"
|
|
|
|
"gvisor.dev/gvisor/test/packetimpact/netdevs"
|
|
)
|
|
|
|
var (
|
|
// DUTType is the type of device under test.
|
|
DUTType = ""
|
|
// Device is the local device on the test network.
|
|
Device = ""
|
|
// LocalIPv4 is the local IPv4 address on the test network.
|
|
LocalIPv4 = ""
|
|
// LocalIPv6 is the local IPv6 address on the test network.
|
|
LocalIPv6 = ""
|
|
// LocalMAC is the local MAC address on the test network.
|
|
LocalMAC = ""
|
|
// POSIXServerIP is the POSIX server's IP address on the control network.
|
|
POSIXServerIP = ""
|
|
// POSIXServerPort is the UDP port the POSIX server is bound to on the
|
|
// control network.
|
|
POSIXServerPort = 40000
|
|
// RemoteIPv4 is the DUT's IPv4 address on the test network.
|
|
RemoteIPv4 = ""
|
|
// RemoteIPv6 is the DUT's IPv6 address on the test network.
|
|
RemoteIPv6 = ""
|
|
// RemoteMAC is the DUT's MAC address on the test network.
|
|
RemoteMAC = ""
|
|
// RPCKeepalive is the gRPC keepalive.
|
|
RPCKeepalive = 10 * time.Second
|
|
// RPCTimeout is the gRPC timeout.
|
|
RPCTimeout = 100 * time.Millisecond
|
|
)
|
|
|
|
// RegisterFlags defines flags and associates them with the package-level
|
|
// exported variables above. It should be called by tests in their init
|
|
// functions.
|
|
func RegisterFlags(fs *flag.FlagSet) {
|
|
fs.StringVar(&POSIXServerIP, "posix_server_ip", POSIXServerIP, "ip address to listen to for UDP commands")
|
|
fs.IntVar(&POSIXServerPort, "posix_server_port", POSIXServerPort, "port to listen to for UDP commands")
|
|
fs.DurationVar(&RPCTimeout, "rpc_timeout", RPCTimeout, "gRPC timeout")
|
|
fs.DurationVar(&RPCKeepalive, "rpc_keepalive", RPCKeepalive, "gRPC keepalive")
|
|
fs.StringVar(&LocalIPv4, "local_ipv4", LocalIPv4, "local IPv4 address for test packets")
|
|
fs.StringVar(&RemoteIPv4, "remote_ipv4", RemoteIPv4, "remote IPv4 address for test packets")
|
|
fs.StringVar(&RemoteIPv6, "remote_ipv6", RemoteIPv6, "remote IPv6 address for test packets")
|
|
fs.StringVar(&RemoteMAC, "remote_mac", RemoteMAC, "remote mac address for test packets")
|
|
fs.StringVar(&Device, "device", Device, "local device for test packets")
|
|
fs.StringVar(&DUTType, "dut_type", DUTType, "type of device under test")
|
|
}
|
|
|
|
// genPseudoFlags populates flag-like global config based on real flags.
|
|
//
|
|
// genPseudoFlags must only be called after flag.Parse.
|
|
func genPseudoFlags() error {
|
|
out, err := exec.Command("ip", "addr", "show").CombinedOutput()
|
|
if err != nil {
|
|
return fmt.Errorf("listing devices: %q: %w", string(out), err)
|
|
}
|
|
devs, err := netdevs.ParseDevices(string(out))
|
|
if err != nil {
|
|
return fmt.Errorf("parsing devices: %w", err)
|
|
}
|
|
|
|
_, deviceInfo, err := netdevs.FindDeviceByIP(net.ParseIP(LocalIPv4), devs)
|
|
if err != nil {
|
|
return fmt.Errorf("can't find deviceInfo: %w", err)
|
|
}
|
|
|
|
LocalMAC = deviceInfo.MAC.String()
|
|
LocalIPv6 = deviceInfo.IPv6Addr.String()
|
|
|
|
return nil
|
|
}
|
|
|
|
// GenerateRandomPayload generates a random byte slice of the specified length,
|
|
// causing a fatal test failure if it is unable to do so.
|
|
func GenerateRandomPayload(t *testing.T, n int) []byte {
|
|
t.Helper()
|
|
buf := make([]byte, n)
|
|
if _, err := rand.Read(buf); err != nil {
|
|
t.Fatalf("rand.Read(buf) failed: %s", err)
|
|
}
|
|
return buf
|
|
}
|