github.com/rawahars/moby@v24.0.4+incompatible/libnetwork/drivers/bridge/setup_ipv4_test.go (about)

     1  //go:build linux
     2  // +build linux
     3  
     4  package bridge
     5  
     6  import (
     7  	"net"
     8  	"testing"
     9  
    10  	"github.com/docker/docker/libnetwork/testutils"
    11  	"github.com/vishvananda/netlink"
    12  )
    13  
    14  func setupTestInterface(t *testing.T, nh *netlink.Handle) (*networkConfiguration, *bridgeInterface) {
    15  	config := &networkConfiguration{
    16  		BridgeName: DefaultBridgeName}
    17  	br := &bridgeInterface{nlh: nh}
    18  
    19  	if err := setupDevice(config, br); err != nil {
    20  		t.Fatalf("Bridge creation failed: %v", err)
    21  	}
    22  	return config, br
    23  }
    24  
    25  func TestSetupBridgeIPv4Fixed(t *testing.T) {
    26  	defer testutils.SetupTestOSContext(t)()
    27  
    28  	ip, netw, err := net.ParseCIDR("192.168.1.1/24")
    29  	if err != nil {
    30  		t.Fatalf("Failed to parse bridge IPv4: %v", err)
    31  	}
    32  
    33  	nh, err := netlink.NewHandle()
    34  	if err != nil {
    35  		t.Fatal(err)
    36  	}
    37  	defer nh.Close()
    38  
    39  	config, br := setupTestInterface(t, nh)
    40  	config.AddressIPv4 = &net.IPNet{IP: ip, Mask: netw.Mask}
    41  	if err := setupBridgeIPv4(config, br); err != nil {
    42  		t.Fatalf("Failed to setup bridge IPv4: %v", err)
    43  	}
    44  
    45  	addrsv4, err := nh.AddrList(br.Link, netlink.FAMILY_V4)
    46  	if err != nil {
    47  		t.Fatalf("Failed to list device IPv4 addresses: %v", err)
    48  	}
    49  
    50  	var found bool
    51  	for _, addr := range addrsv4 {
    52  		if config.AddressIPv4.String() == addr.IPNet.String() {
    53  			found = true
    54  			break
    55  		}
    56  	}
    57  
    58  	if !found {
    59  		t.Fatalf("Bridge device does not have requested IPv4 address %v", config.AddressIPv4)
    60  	}
    61  }
    62  
    63  func TestSetupGatewayIPv4(t *testing.T) {
    64  	defer testutils.SetupTestOSContext(t)()
    65  
    66  	nh, err := netlink.NewHandle()
    67  	if err != nil {
    68  		t.Fatal(err)
    69  	}
    70  	defer nh.Close()
    71  
    72  	ip, nw, _ := net.ParseCIDR("192.168.0.24/16")
    73  	nw.IP = ip
    74  	gw := net.ParseIP("192.168.2.254")
    75  
    76  	config := &networkConfiguration{
    77  		BridgeName:         DefaultBridgeName,
    78  		DefaultGatewayIPv4: gw}
    79  
    80  	br := &bridgeInterface{bridgeIPv4: nw, nlh: nh}
    81  
    82  	if err := setupGatewayIPv4(config, br); err != nil {
    83  		t.Fatalf("Set Default Gateway failed: %v", err)
    84  	}
    85  
    86  	if !gw.Equal(br.gatewayIPv4) {
    87  		t.Fatalf("Set Default Gateway failed. Expected %v, Found %v", gw, br.gatewayIPv4)
    88  	}
    89  }