summaryrefslogtreecommitdiffhomepage
path: root/test/packetimpact/netdevs
diff options
context:
space:
mode:
Diffstat (limited to 'test/packetimpact/netdevs')
-rw-r--r--test/packetimpact/netdevs/BUILD23
-rw-r--r--test/packetimpact/netdevs/netdevs.go115
-rw-r--r--test/packetimpact/netdevs/netdevs_test.go227
3 files changed, 0 insertions, 365 deletions
diff --git a/test/packetimpact/netdevs/BUILD b/test/packetimpact/netdevs/BUILD
deleted file mode 100644
index 8d1193fed..000000000
--- a/test/packetimpact/netdevs/BUILD
+++ /dev/null
@@ -1,23 +0,0 @@
-load("//tools:defs.bzl", "go_library", "go_test")
-
-package(
- licenses = ["notice"],
-)
-
-go_library(
- name = "netdevs",
- srcs = ["netdevs.go"],
- visibility = ["//test/packetimpact:__subpackages__"],
- deps = [
- "//pkg/tcpip",
- "//pkg/tcpip/header",
- ],
-)
-
-go_test(
- name = "netdevs_test",
- size = "small",
- srcs = ["netdevs_test.go"],
- library = ":netdevs",
- deps = ["@com_github_google_go_cmp//cmp:go_default_library"],
-)
diff --git a/test/packetimpact/netdevs/netdevs.go b/test/packetimpact/netdevs/netdevs.go
deleted file mode 100644
index 006988896..000000000
--- a/test/packetimpact/netdevs/netdevs.go
+++ /dev/null
@@ -1,115 +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 netdevs contains utilities for working with network devices.
-package netdevs
-
-import (
- "fmt"
- "net"
- "regexp"
- "strconv"
- "strings"
-
- "gvisor.dev/gvisor/pkg/tcpip"
- "gvisor.dev/gvisor/pkg/tcpip/header"
-)
-
-// A DeviceInfo represents a network device.
-type DeviceInfo struct {
- ID uint32
- MAC net.HardwareAddr
- IPv4Addr net.IP
- IPv4Net *net.IPNet
- IPv6Addr net.IP
- IPv6Net *net.IPNet
-}
-
-var (
- deviceLine = regexp.MustCompile(`^\s*(\d+): (\w+)`)
- linkLine = regexp.MustCompile(`^\s*link/\w+ ([0-9a-fA-F:]+)`)
- inetLine = regexp.MustCompile(`^\s*inet ([0-9./]+)`)
- inet6Line = regexp.MustCompile(`^\s*inet6 ([0-9a-fA-F:/]+)`)
-)
-
-// ParseDevices parses the output from `ip addr show` into a map from device
-// name to information about the device.
-//
-// Note: if multiple IPv6 addresses are assigned to a device, the last address
-// displayed by `ip addr show` will be used. This is fine for packetimpact
-// because we will always only have at most one IPv6 address assigned to each
-// device.
-func ParseDevices(cmdOutput string) (map[string]DeviceInfo, error) {
- var currentDevice string
- var currentInfo DeviceInfo
- deviceInfos := make(map[string]DeviceInfo)
- for _, line := range strings.Split(cmdOutput, "\n") {
- if m := deviceLine.FindStringSubmatch(line); m != nil {
- if currentDevice != "" {
- deviceInfos[currentDevice] = currentInfo
- }
- id, err := strconv.ParseUint(m[1], 10, 32)
- if err != nil {
- return nil, fmt.Errorf("parsing device ID %s: %w", m[1], err)
- }
- currentInfo = DeviceInfo{ID: uint32(id)}
- currentDevice = m[2]
- } else if m := linkLine.FindStringSubmatch(line); m != nil {
- mac, err := net.ParseMAC(m[1])
- if err != nil {
- return nil, err
- }
- currentInfo.MAC = mac
- } else if m := inetLine.FindStringSubmatch(line); m != nil {
- ipv4Addr, ipv4Net, err := net.ParseCIDR(m[1])
- if err != nil {
- return nil, err
- }
- currentInfo.IPv4Addr = ipv4Addr
- currentInfo.IPv4Net = ipv4Net
- } else if m := inet6Line.FindStringSubmatch(line); m != nil {
- ipv6Addr, ipv6Net, err := net.ParseCIDR(m[1])
- if err != nil {
- return nil, err
- }
- currentInfo.IPv6Addr = ipv6Addr
- currentInfo.IPv6Net = ipv6Net
- }
- }
- if currentDevice != "" {
- deviceInfos[currentDevice] = currentInfo
- }
- return deviceInfos, nil
-}
-
-// MACToIP converts the MAC address to an IPv6 link local address as described
-// in RFC 4291 page 20: https://tools.ietf.org/html/rfc4291#page-20
-func MACToIP(mac net.HardwareAddr) net.IP {
- addr := make([]byte, header.IPv6AddressSize)
- addr[0] = 0xfe
- addr[1] = 0x80
- header.EthernetAdddressToModifiedEUI64IntoBuf(tcpip.LinkAddress(mac), addr[8:])
- return net.IP(addr)
-}
-
-// FindDeviceByIP finds a DeviceInfo and device name from an IP address in the
-// output of ParseDevices.
-func FindDeviceByIP(ip net.IP, devices map[string]DeviceInfo) (string, DeviceInfo, error) {
- for dev, info := range devices {
- if info.IPv4Addr.Equal(ip) {
- return dev, info, nil
- }
- }
- return "", DeviceInfo{}, fmt.Errorf("can't find %s on any interface", ip)
-}
diff --git a/test/packetimpact/netdevs/netdevs_test.go b/test/packetimpact/netdevs/netdevs_test.go
deleted file mode 100644
index 24ad12198..000000000
--- a/test/packetimpact/netdevs/netdevs_test.go
+++ /dev/null
@@ -1,227 +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 netdevs
-
-import (
- "fmt"
- "net"
- "testing"
-
- "github.com/google/go-cmp/cmp"
-)
-
-func mustParseMAC(s string) net.HardwareAddr {
- mac, err := net.ParseMAC(s)
- if err != nil {
- panic(fmt.Sprintf("failed to parse test MAC %q: %s", s, err))
- }
- return mac
-}
-
-func TestParseDevices(t *testing.T) {
- for _, v := range []struct {
- desc string
- cmdOutput string
- want map[string]DeviceInfo
- }{
- {
- desc: "v4 and v6",
- cmdOutput: `
-1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
- link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
- inet 127.0.0.1/8 scope host lo
- valid_lft forever preferred_lft forever
- inet6 ::1/128 scope host
- valid_lft forever preferred_lft forever
-2613: eth0@if2614: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
- link/ether 02:42:c0:a8:09:02 brd ff:ff:ff:ff:ff:ff link-netnsid 0
- inet 192.168.9.2/24 brd 192.168.9.255 scope global eth0
- valid_lft forever preferred_lft forever
- inet6 fe80::42:c0ff:fea8:902/64 scope link tentative
- valid_lft forever preferred_lft forever
-2615: eth2@if2616: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
- link/ether 02:42:df:f5:e1:0a brd ff:ff:ff:ff:ff:ff link-netnsid 0
- inet 223.245.225.10/24 brd 223.245.225.255 scope global eth2
- valid_lft forever preferred_lft forever
- inet6 fe80::42:dfff:fef5:e10a/64 scope link tentative
- valid_lft forever preferred_lft forever
-2617: eth1@if2618: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
- link/ether 02:42:da:33:13:0a brd ff:ff:ff:ff:ff:ff link-netnsid 0
- inet 218.51.19.10/24 brd 218.51.19.255 scope global eth1
- valid_lft forever preferred_lft forever
- inet6 fe80::42:daff:fe33:130a/64 scope link tentative
- valid_lft forever preferred_lft forever`,
- want: map[string]DeviceInfo{
- "lo": DeviceInfo{
- ID: 1,
- MAC: mustParseMAC("00:00:00:00:00:00"),
- IPv4Addr: net.IPv4(127, 0, 0, 1),
- IPv4Net: &net.IPNet{
- IP: net.IPv4(127, 0, 0, 0),
- Mask: net.CIDRMask(8, 32),
- },
- IPv6Addr: net.ParseIP("::1"),
- IPv6Net: &net.IPNet{
- IP: net.ParseIP("::1"),
- Mask: net.CIDRMask(128, 128),
- },
- },
- "eth0": DeviceInfo{
- ID: 2613,
- MAC: mustParseMAC("02:42:c0:a8:09:02"),
- IPv4Addr: net.IPv4(192, 168, 9, 2),
- IPv4Net: &net.IPNet{
- IP: net.IPv4(192, 168, 9, 0),
- Mask: net.CIDRMask(24, 32),
- },
- IPv6Addr: net.ParseIP("fe80::42:c0ff:fea8:902"),
- IPv6Net: &net.IPNet{
- IP: net.ParseIP("fe80::"),
- Mask: net.CIDRMask(64, 128),
- },
- },
- "eth1": DeviceInfo{
- ID: 2617,
- MAC: mustParseMAC("02:42:da:33:13:0a"),
- IPv4Addr: net.IPv4(218, 51, 19, 10),
- IPv4Net: &net.IPNet{
- IP: net.IPv4(218, 51, 19, 0),
- Mask: net.CIDRMask(24, 32),
- },
- IPv6Addr: net.ParseIP("fe80::42:daff:fe33:130a"),
- IPv6Net: &net.IPNet{
- IP: net.ParseIP("fe80::"),
- Mask: net.CIDRMask(64, 128),
- },
- },
- "eth2": DeviceInfo{
- ID: 2615,
- MAC: mustParseMAC("02:42:df:f5:e1:0a"),
- IPv4Addr: net.IPv4(223, 245, 225, 10),
- IPv4Net: &net.IPNet{
- IP: net.IPv4(223, 245, 225, 0),
- Mask: net.CIDRMask(24, 32),
- },
- IPv6Addr: net.ParseIP("fe80::42:dfff:fef5:e10a"),
- IPv6Net: &net.IPNet{
- IP: net.ParseIP("fe80::"),
- Mask: net.CIDRMask(64, 128),
- },
- },
- },
- },
- {
- desc: "v4 only",
- cmdOutput: `
-2613: eth0@if2614: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
- link/ether 02:42:c0:a8:09:02 brd ff:ff:ff:ff:ff:ff link-netnsid 0
- inet 192.168.9.2/24 brd 192.168.9.255 scope global eth0
- valid_lft forever preferred_lft forever`,
- want: map[string]DeviceInfo{
- "eth0": DeviceInfo{
- ID: 2613,
- MAC: mustParseMAC("02:42:c0:a8:09:02"),
- IPv4Addr: net.IPv4(192, 168, 9, 2),
- IPv4Net: &net.IPNet{
- IP: net.IPv4(192, 168, 9, 0),
- Mask: net.CIDRMask(24, 32),
- },
- },
- },
- },
- {
- desc: "v6 only",
- cmdOutput: `
-2615: eth2@if2616: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
- link/ether 02:42:df:f5:e1:0a brd ff:ff:ff:ff:ff:ff link-netnsid 0
- inet6 fe80::42:dfff:fef5:e10a/64 scope link tentative
- valid_lft forever preferred_lft forever`,
- want: map[string]DeviceInfo{
- "eth2": DeviceInfo{
- ID: 2615,
- MAC: mustParseMAC("02:42:df:f5:e1:0a"),
- IPv6Addr: net.ParseIP("fe80::42:dfff:fef5:e10a"),
- IPv6Net: &net.IPNet{
- IP: net.ParseIP("fe80::"),
- Mask: net.CIDRMask(64, 128),
- },
- },
- },
- },
- } {
- t.Run(v.desc, func(t *testing.T) {
- got, err := ParseDevices(v.cmdOutput)
- if err != nil {
- t.Errorf("ParseDevices(\n%s\n) got unexpected error: %s", v.cmdOutput, err)
- }
- if diff := cmp.Diff(v.want, got); diff != "" {
- t.Errorf("ParseDevices(\n%s\n) got output diff (-want, +got):\n%s", v.cmdOutput, diff)
- }
- })
- }
-}
-
-func TestParseDevicesErrors(t *testing.T) {
- for _, v := range []struct {
- desc string
- cmdOutput string
- }{
- {
- desc: "invalid MAC addr",
- cmdOutput: `
-2617: eth1@if2618: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
- link/ether 02:42:da:33:13:0a:ffffffff brd ff:ff:ff:ff:ff:ff link-netnsid 0
- inet 218.51.19.10/24 brd 218.51.19.255 scope global eth1
- valid_lft forever preferred_lft forever
- inet6 fe80::42:daff:fe33:130a/64 scope link tentative
- valid_lft forever preferred_lft forever`,
- },
- {
- desc: "invalid v4 addr",
- cmdOutput: `
-2617: eth1@if2618: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
- link/ether 02:42:da:33:13:0a brd ff:ff:ff:ff:ff:ff link-netnsid 0
- inet 1234.4321.424242.0/24 brd 218.51.19.255 scope global eth1
- valid_lft forever preferred_lft forever
- inet6 fe80::42:daff:fe33:130a/64 scope link tentative
- valid_lft forever preferred_lft forever`,
- },
- {
- desc: "invalid v6 addr",
- cmdOutput: `
-2617: eth1@if2618: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
- link/ether 02:42:da:33:13:0a brd ff:ff:ff:ff:ff:ff link-netnsid 0
- inet 218.51.19.10/24 brd 218.51.19.255 scope global eth1
- valid_lft forever preferred_lft forever
- inet6 fe80:ffffffff::42:daff:fe33:130a/64 scope link tentative
- valid_lft forever preferred_lft forever`,
- },
- {
- desc: "invalid CIDR missing prefixlen",
- cmdOutput: `
-2617: eth1@if2618: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default
- link/ether 02:42:da:33:13:0a brd ff:ff:ff:ff:ff:ff link-netnsid 0
- inet 218.51.19.10 brd 218.51.19.255 scope global eth1
- valid_lft forever preferred_lft forever
- inet6 fe80::42:daff:fe33:130a scope link tentative
- valid_lft forever preferred_lft forever`,
- },
- } {
- t.Run(v.desc, func(t *testing.T) {
- if _, err := ParseDevices(v.cmdOutput); err == nil {
- t.Errorf("ParseDevices(\n%s\n) succeeded unexpectedly, want error", v.cmdOutput)
- }
- })
- }
-}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-17 18:47:45 +0000