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Diffstat (limited to 'test/packetimpact/testbench/testbench.go')
| -rw-r--r-- | test/packetimpact/testbench/testbench.go | 201 |
1 files changed, 0 insertions, 201 deletions
diff --git a/test/packetimpact/testbench/testbench.go b/test/packetimpact/testbench/testbench.go deleted file mode 100644 index 92200add9..000000000 --- a/test/packetimpact/testbench/testbench.go +++ /dev/null @@ -1,201 +0,0 @@ -// 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 has utilities to send and receive packets, and also command -// the DUT to run POSIX functions. It is the packetimpact test API. -package testbench - -import ( - "flag" - "fmt" - "math/rand" - "net" - "os/exec" - "testing" - "time" - - "gvisor.dev/gvisor/test/packetimpact/netdevs" -) - -var ( - // Native indicates that the test is being run natively. - Native = false - // RPCKeepalive is the gRPC keepalive. - RPCKeepalive = 10 * time.Second - // RPCTimeout is the gRPC timeout. - RPCTimeout = 100 * time.Millisecond - - // dutTestNets is the pool among which the testbench can choose a DUT to work - // with. - dutTestNets chan *DUTTestNet - - // TODO(zeling): Remove the following variables once the test runner side is - // ready. - localDevice = "" - remoteDevice = "" - localIPv4 = "" - remoteIPv4 = "" - ipv4PrefixLength = 0 - localIPv6 = "" - remoteIPv6 = "" - localInterfaceID uint32 - remoteInterfaceID uint64 - localMAC = "" - remoteMAC = "" - posixServerIP = "" - posixServerPort = 40000 -) - -// DUTTestNet describes the test network setup on dut and how the testbench -// should connect with an existing DUT. -type DUTTestNet struct { - // LocalMAC is the local MAC address on the test network. - LocalMAC net.HardwareAddr - // RemoteMAC is the DUT's MAC address on the test network. - RemoteMAC net.HardwareAddr - // LocalIPv4 is the local IPv4 address on the test network. - LocalIPv4 net.IP - // RemoteIPv4 is the DUT's IPv4 address on the test network. - RemoteIPv4 net.IP - // IPv4PrefixLength is the network prefix length of the IPv4 test network. - IPv4PrefixLength int - // LocalIPv6 is the local IPv6 address on the test network. - LocalIPv6 net.IP - // RemoteIPv6 is the DUT's IPv6 address on the test network. - RemoteIPv6 net.IP - // LocalDevID is the ID of the local interface on the test network. - LocalDevID uint32 - // RemoteDevID is the ID of the remote interface on the test network. - RemoteDevID uint32 - // LocalDevName is the device that testbench uses to inject traffic. - LocalDevName string - // RemoteDevName is the device name on the DUT, individual tests can - // use the name to construct tests. - RemoteDevName string - - // The following two fields on actually on the control network instead - // of the test network, including them for convenience. - - // POSIXServerIP is the POSIX server's IP address on the control network. - POSIXServerIP net.IP - // POSIXServerPort is the UDP port the POSIX server is bound to on the - // control network. - POSIXServerPort uint16 -} - -// 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.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(&localDevice, "local_device", localDevice, "local device to inject traffic") - fs.StringVar(&remoteDevice, "remote_device", remoteDevice, "remote device on the DUT") - fs.Uint64Var(&remoteInterfaceID, "remote_interface_id", remoteInterfaceID, "remote interface ID for test packets") - - fs.BoolVar(&Native, "native", Native, "whether the test is running natively") - fs.DurationVar(&RPCTimeout, "rpc_timeout", RPCTimeout, "gRPC timeout") - fs.DurationVar(&RPCKeepalive, "rpc_keepalive", RPCKeepalive, "gRPC keepalive") -} - -// Initialize initializes the testbench, it parse the flags and sets up the -// pool of test networks for testbench's later use. -func Initialize(fs *flag.FlagSet) { - registerFlags(fs) - flag.Parse() - if err := genPseudoFlags(); err != nil { - panic(err) - } - var dut DUTTestNet - var err error - dut.LocalMAC, err = net.ParseMAC(localMAC) - if err != nil { - panic(err) - } - dut.RemoteMAC, err = net.ParseMAC(remoteMAC) - if err != nil { - panic(err) - } - dut.LocalIPv4 = net.ParseIP(localIPv4).To4() - dut.LocalIPv6 = net.ParseIP(localIPv6).To16() - dut.RemoteIPv4 = net.ParseIP(remoteIPv4).To4() - dut.RemoteIPv6 = net.ParseIP(remoteIPv6).To16() - dut.LocalDevID = uint32(localInterfaceID) - dut.RemoteDevID = uint32(remoteInterfaceID) - dut.LocalDevName = localDevice - dut.RemoteDevName = remoteDevice - dut.POSIXServerIP = net.ParseIP(posixServerIP) - dut.POSIXServerPort = uint16(posixServerPort) - dut.IPv4PrefixLength = ipv4PrefixLength - - dutTestNets = make(chan *DUTTestNet, 1) - dutTestNets <- &dut -} - -// 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() - localInterfaceID = deviceInfo.ID - - if deviceInfo.IPv4Net != nil { - ipv4PrefixLength, _ = deviceInfo.IPv4Net.Mask.Size() - } else { - ipv4PrefixLength, _ = net.ParseIP(localIPv4).DefaultMask().Size() - } - 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 -} - -// GetDUTTestNet gets a usable DUTTestNet, the function will block until any -// becomes available. -func GetDUTTestNet() *DUTTestNet { - return <-dutTestNets -} - -// Release releases the DUTTestNet back to the pool so that some other test -// can use. -func (n *DUTTestNet) Release() { - dutTestNets <- n -} |