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-rw-r--r--pkg/sentry/devices/tundev/BUILD1
-rw-r--r--pkg/sentry/devices/tundev/tundev.go14
-rw-r--r--pkg/sentry/fs/dev/BUILD1
-rw-r--r--pkg/sentry/fs/dev/net_tun.go14
-rw-r--r--pkg/tcpip/link/tun/device.go38
-rw-r--r--pkg/tcpip/network/arp/arp.go34
-rw-r--r--pkg/tcpip/network/arp/arp_test.go3
-rw-r--r--pkg/tcpip/network/ip_test.go32
-rw-r--r--pkg/tcpip/network/ipv4/ipv4_test.go3
-rw-r--r--pkg/tcpip/network/ipv6/icmp_test.go24
-rw-r--r--pkg/tcpip/network/ipv6/ndp_test.go8
-rw-r--r--pkg/tcpip/sample/tun_tcp_echo/main.go4
-rw-r--r--pkg/tcpip/stack/nic.go62
-rw-r--r--pkg/tcpip/stack/registration.go2
-rw-r--r--pkg/tcpip/tests/integration/forward_test.go13
-rw-r--r--pkg/tcpip/tests/integration/link_resolution_test.go7
16 files changed, 122 insertions, 138 deletions
diff --git a/pkg/sentry/devices/tundev/BUILD b/pkg/sentry/devices/tundev/BUILD
index 14a8bf9cd..71c59287c 100644
--- a/pkg/sentry/devices/tundev/BUILD
+++ b/pkg/sentry/devices/tundev/BUILD
@@ -17,7 +17,6 @@ go_library(
"//pkg/sentry/vfs",
"//pkg/syserror",
"//pkg/tcpip/link/tun",
- "//pkg/tcpip/network/arp",
"//pkg/usermem",
"//pkg/waiter",
],
diff --git a/pkg/sentry/devices/tundev/tundev.go b/pkg/sentry/devices/tundev/tundev.go
index ff5d49fbd..d8f4e1d35 100644
--- a/pkg/sentry/devices/tundev/tundev.go
+++ b/pkg/sentry/devices/tundev/tundev.go
@@ -16,8 +16,6 @@
package tundev
import (
- "fmt"
-
"gvisor.dev/gvisor/pkg/abi/linux"
"gvisor.dev/gvisor/pkg/context"
"gvisor.dev/gvisor/pkg/sentry/arch"
@@ -28,7 +26,6 @@ import (
"gvisor.dev/gvisor/pkg/sentry/vfs"
"gvisor.dev/gvisor/pkg/syserror"
"gvisor.dev/gvisor/pkg/tcpip/link/tun"
- "gvisor.dev/gvisor/pkg/tcpip/network/arp"
"gvisor.dev/gvisor/pkg/usermem"
"gvisor.dev/gvisor/pkg/waiter"
)
@@ -91,16 +88,7 @@ func (fd *tunFD) Ioctl(ctx context.Context, uio usermem.IO, args arch.SyscallArg
return 0, err
}
flags := usermem.ByteOrder.Uint16(req.Data[:])
- created, err := fd.device.SetIff(stack.Stack, req.Name(), flags)
- if err == nil && created {
- // Always start with an ARP address for interfaces so they can handle ARP
- // packets.
- nicID := fd.device.NICID()
- if err := stack.Stack.AddAddress(nicID, arp.ProtocolNumber, arp.ProtocolAddress); err != nil {
- panic(fmt.Sprintf("failed to add ARP address after creating new TUN/TAP interface with ID = %d", nicID))
- }
- }
- return 0, err
+ return 0, fd.device.SetIff(stack.Stack, req.Name(), flags)
case linux.TUNGETIFF:
var req linux.IFReq
diff --git a/pkg/sentry/fs/dev/BUILD b/pkg/sentry/fs/dev/BUILD
index 6b7b451b8..9379a4d7b 100644
--- a/pkg/sentry/fs/dev/BUILD
+++ b/pkg/sentry/fs/dev/BUILD
@@ -34,7 +34,6 @@ go_library(
"//pkg/sentry/socket/netstack",
"//pkg/syserror",
"//pkg/tcpip/link/tun",
- "//pkg/tcpip/network/arp",
"//pkg/usermem",
"//pkg/waiter",
],
diff --git a/pkg/sentry/fs/dev/net_tun.go b/pkg/sentry/fs/dev/net_tun.go
index 19ffdec47..5227ef652 100644
--- a/pkg/sentry/fs/dev/net_tun.go
+++ b/pkg/sentry/fs/dev/net_tun.go
@@ -15,8 +15,6 @@
package dev
import (
- "fmt"
-
"gvisor.dev/gvisor/pkg/abi/linux"
"gvisor.dev/gvisor/pkg/context"
"gvisor.dev/gvisor/pkg/sentry/arch"
@@ -27,7 +25,6 @@ import (
"gvisor.dev/gvisor/pkg/sentry/socket/netstack"
"gvisor.dev/gvisor/pkg/syserror"
"gvisor.dev/gvisor/pkg/tcpip/link/tun"
- "gvisor.dev/gvisor/pkg/tcpip/network/arp"
"gvisor.dev/gvisor/pkg/usermem"
"gvisor.dev/gvisor/pkg/waiter"
)
@@ -112,16 +109,7 @@ func (n *netTunFileOperations) Ioctl(ctx context.Context, file *fs.File, io user
return 0, err
}
flags := usermem.ByteOrder.Uint16(req.Data[:])
- created, err := n.device.SetIff(stack.Stack, req.Name(), flags)
- if err == nil && created {
- // Always start with an ARP address for interfaces so they can handle ARP
- // packets.
- nicID := n.device.NICID()
- if err := stack.Stack.AddAddress(nicID, arp.ProtocolNumber, arp.ProtocolAddress); err != nil {
- panic(fmt.Sprintf("failed to add ARP address after creating new TUN/TAP interface with ID = %d", nicID))
- }
- }
- return 0, err
+ return 0, n.device.SetIff(stack.Stack, req.Name(), flags)
case linux.TUNGETIFF:
var req linux.IFReq
diff --git a/pkg/tcpip/link/tun/device.go b/pkg/tcpip/link/tun/device.go
index 4c14f55d3..9a76bdba7 100644
--- a/pkg/tcpip/link/tun/device.go
+++ b/pkg/tcpip/link/tun/device.go
@@ -76,29 +76,13 @@ func (d *Device) Release(ctx context.Context) {
}
}
-// NICID returns the NIC ID of the device.
-//
-// Must only be called after the device has been attached to an endpoint.
-func (d *Device) NICID() tcpip.NICID {
- d.mu.RLock()
- defer d.mu.RUnlock()
-
- if d.endpoint == nil {
- panic("called NICID on a device that has not been attached")
- }
-
- return d.endpoint.nicID
-}
-
// SetIff services TUNSETIFF ioctl(2) request.
-//
-// Returns true if a new NIC was created; false if an existing one was attached.
-func (d *Device) SetIff(s *stack.Stack, name string, flags uint16) (bool, error) {
+func (d *Device) SetIff(s *stack.Stack, name string, flags uint16) error {
d.mu.Lock()
defer d.mu.Unlock()
if d.endpoint != nil {
- return false, syserror.EINVAL
+ return syserror.EINVAL
}
// Input validations.
@@ -106,7 +90,7 @@ func (d *Device) SetIff(s *stack.Stack, name string, flags uint16) (bool, error)
isTap := flags&linux.IFF_TAP != 0
supportedFlags := uint16(linux.IFF_TUN | linux.IFF_TAP | linux.IFF_NO_PI)
if isTap && isTun || !isTap && !isTun || flags&^supportedFlags != 0 {
- return false, syserror.EINVAL
+ return syserror.EINVAL
}
prefix := "tun"
@@ -119,18 +103,18 @@ func (d *Device) SetIff(s *stack.Stack, name string, flags uint16) (bool, error)
linkCaps |= stack.CapabilityResolutionRequired
}
- endpoint, created, err := attachOrCreateNIC(s, name, prefix, linkCaps)
+ endpoint, err := attachOrCreateNIC(s, name, prefix, linkCaps)
if err != nil {
- return false, syserror.EINVAL
+ return syserror.EINVAL
}
d.endpoint = endpoint
d.notifyHandle = d.endpoint.AddNotify(d)
d.flags = flags
- return created, nil
+ return nil
}
-func attachOrCreateNIC(s *stack.Stack, name, prefix string, linkCaps stack.LinkEndpointCapabilities) (*tunEndpoint, bool, error) {
+func attachOrCreateNIC(s *stack.Stack, name, prefix string, linkCaps stack.LinkEndpointCapabilities) (*tunEndpoint, error) {
for {
// 1. Try to attach to an existing NIC.
if name != "" {
@@ -138,13 +122,13 @@ func attachOrCreateNIC(s *stack.Stack, name, prefix string, linkCaps stack.LinkE
endpoint, ok := linkEP.(*tunEndpoint)
if !ok {
// Not a NIC created by tun device.
- return nil, false, syserror.EOPNOTSUPP
+ return nil, syserror.EOPNOTSUPP
}
if !endpoint.TryIncRef() {
// Race detected: NIC got deleted in between.
continue
}
- return endpoint, false, nil
+ return endpoint, nil
}
}
@@ -167,12 +151,12 @@ func attachOrCreateNIC(s *stack.Stack, name, prefix string, linkCaps stack.LinkE
})
switch err {
case nil:
- return endpoint, true, nil
+ return endpoint, nil
case tcpip.ErrDuplicateNICID:
// Race detected: A NIC has been created in between.
continue
default:
- return nil, false, syserror.EINVAL
+ return nil, syserror.EINVAL
}
}
}
diff --git a/pkg/tcpip/network/arp/arp.go b/pkg/tcpip/network/arp/arp.go
index 33a4a0720..3d5c0d270 100644
--- a/pkg/tcpip/network/arp/arp.go
+++ b/pkg/tcpip/network/arp/arp.go
@@ -31,17 +31,15 @@ import (
const (
// ProtocolNumber is the ARP protocol number.
ProtocolNumber = header.ARPProtocolNumber
-
- // ProtocolAddress is the address expected by the ARP endpoint.
- ProtocolAddress = tcpip.Address("arp")
)
-var _ stack.AddressableEndpoint = (*endpoint)(nil)
+// ARP endpoints need to implement stack.NetworkEndpoint because the stack
+// considers the layer above the link-layer a network layer; the only
+// facility provided by the stack to deliver packets to a layer above
+// the link-layer is via stack.NetworkEndpoint.HandlePacket.
var _ stack.NetworkEndpoint = (*endpoint)(nil)
type endpoint struct {
- stack.AddressableEndpointState
-
protocol *protocol
// enabled is set to 1 when the NIC is enabled and 0 when it is disabled.
@@ -87,7 +85,7 @@ func (e *endpoint) Disable() {
}
// DefaultTTL is unused for ARP. It implements stack.NetworkEndpoint.
-func (e *endpoint) DefaultTTL() uint8 {
+func (*endpoint) DefaultTTL() uint8 {
return 0
}
@@ -100,25 +98,23 @@ func (e *endpoint) MaxHeaderLength() uint16 {
return e.nic.MaxHeaderLength() + header.ARPSize
}
-func (e *endpoint) Close() {
- e.AddressableEndpointState.Cleanup()
-}
+func (*endpoint) Close() {}
-func (e *endpoint) WritePacket(*stack.Route, *stack.GSO, stack.NetworkHeaderParams, *stack.PacketBuffer) *tcpip.Error {
+func (*endpoint) WritePacket(*stack.Route, *stack.GSO, stack.NetworkHeaderParams, *stack.PacketBuffer) *tcpip.Error {
return tcpip.ErrNotSupported
}
// NetworkProtocolNumber implements stack.NetworkEndpoint.NetworkProtocolNumber.
-func (e *endpoint) NetworkProtocolNumber() tcpip.NetworkProtocolNumber {
+func (*endpoint) NetworkProtocolNumber() tcpip.NetworkProtocolNumber {
return ProtocolNumber
}
// WritePackets implements stack.NetworkEndpoint.WritePackets.
-func (e *endpoint) WritePackets(*stack.Route, *stack.GSO, stack.PacketBufferList, stack.NetworkHeaderParams) (int, *tcpip.Error) {
+func (*endpoint) WritePackets(*stack.Route, *stack.GSO, stack.PacketBufferList, stack.NetworkHeaderParams) (int, *tcpip.Error) {
return 0, tcpip.ErrNotSupported
}
-func (e *endpoint) WriteHeaderIncludedPacket(r *stack.Route, pkt *stack.PacketBuffer) *tcpip.Error {
+func (*endpoint) WriteHeaderIncludedPacket(*stack.Route, *stack.PacketBuffer) *tcpip.Error {
return tcpip.ErrNotSupported
}
@@ -216,9 +212,8 @@ func (p *protocol) Number() tcpip.NetworkProtocolNumber { return ProtocolNumber
func (p *protocol) MinimumPacketSize() int { return header.ARPSize }
func (p *protocol) DefaultPrefixLen() int { return 0 }
-func (*protocol) ParseAddresses(v buffer.View) (src, dst tcpip.Address) {
- h := header.ARP(v)
- return tcpip.Address(h.ProtocolAddressSender()), ProtocolAddress
+func (*protocol) ParseAddresses(buffer.View) (src, dst tcpip.Address) {
+ return "", ""
}
func (p *protocol) NewEndpoint(nic stack.NetworkInterface, linkAddrCache stack.LinkAddressCache, nud stack.NUDHandler, dispatcher stack.TransportDispatcher) stack.NetworkEndpoint {
@@ -228,7 +223,6 @@ func (p *protocol) NewEndpoint(nic stack.NetworkInterface, linkAddrCache stack.L
linkAddrCache: linkAddrCache,
nud: nud,
}
- e.AddressableEndpointState.Init(e)
return e
}
@@ -311,10 +305,6 @@ func (*protocol) Parse(pkt *stack.PacketBuffer) (proto tcpip.TransportProtocolNu
}
// NewProtocol returns an ARP network protocol.
-//
-// Note, to make sure that the ARP endpoint receives ARP packets, the "arp"
-// address must be added to every NIC that should respond to ARP requests. See
-// ProtocolAddress for more details.
func NewProtocol(s *stack.Stack) stack.NetworkProtocol {
return &protocol{stack: s}
}
diff --git a/pkg/tcpip/network/arp/arp_test.go b/pkg/tcpip/network/arp/arp_test.go
index 91d59d83f..f462524c9 100644
--- a/pkg/tcpip/network/arp/arp_test.go
+++ b/pkg/tcpip/network/arp/arp_test.go
@@ -200,9 +200,6 @@ func newTestContext(t *testing.T, useNeighborCache bool) *testContext {
t.Fatalf("AddAddress for ipv4 failed: %v", err)
}
}
- if err := s.AddAddress(nicID, arp.ProtocolNumber, arp.ProtocolAddress); err != nil {
- t.Fatalf("AddAddress for arp failed: %v", err)
- }
s.SetRouteTable([]tcpip.Route{{
Destination: header.IPv4EmptySubnet,
diff --git a/pkg/tcpip/network/ip_test.go b/pkg/tcpip/network/ip_test.go
index 12c16fde4..d49c44846 100644
--- a/pkg/tcpip/network/ip_test.go
+++ b/pkg/tcpip/network/ip_test.go
@@ -670,8 +670,12 @@ func TestReceive(t *testing.T) {
t.Fatalf("ep.Enable(): %s", err)
}
- if ep, err := ep.AddAndAcquirePermanentAddress(test.epAddr, stack.CanBePrimaryEndpoint, stack.AddressConfigStatic, false /* deprecated */); err != nil {
- t.Fatalf("ep.AddAndAcquirePermanentAddress(%s, CanBePrimaryEndpoint, AddressConfigStatic, false): %s", test.epAddr, err)
+ addressableEndpoint, ok := ep.(stack.AddressableEndpoint)
+ if !ok {
+ t.Fatalf("expected network endpoint with number = %d to implement stack.AddressableEndpoint", test.protoNum)
+ }
+ if ep, err := addressableEndpoint.AddAndAcquirePermanentAddress(test.epAddr, stack.CanBePrimaryEndpoint, stack.AddressConfigStatic, false /* deprecated */); err != nil {
+ t.Fatalf("addressableEndpoint.AddAndAcquirePermanentAddress(%s, CanBePrimaryEndpoint, AddressConfigStatic, false): %s", test.epAddr, err)
} else {
ep.DecRef()
}
@@ -778,9 +782,13 @@ func TestIPv4ReceiveControl(t *testing.T) {
nic.testObject.typ = c.expectedTyp
nic.testObject.extra = c.expectedExtra
+ addressableEndpoint, ok := ep.(stack.AddressableEndpoint)
+ if !ok {
+ t.Fatal("expected IPv4 network endpoint to implement stack.AddressableEndpoint")
+ }
addr := localIPv4Addr.WithPrefix()
- if ep, err := ep.AddAndAcquirePermanentAddress(addr, stack.CanBePrimaryEndpoint, stack.AddressConfigStatic, false /* deprecated */); err != nil {
- t.Fatalf("ep.AddAndAcquirePermanentAddress(%s, CanBePrimaryEndpoint, AddressConfigStatic, false): %s", addr, err)
+ if ep, err := addressableEndpoint.AddAndAcquirePermanentAddress(addr, stack.CanBePrimaryEndpoint, stack.AddressConfigStatic, false /* deprecated */); err != nil {
+ t.Fatalf("addressableEndpoint.AddAndAcquirePermanentAddress(%s, CanBePrimaryEndpoint, AddressConfigStatic, false): %s", addr, err)
} else {
ep.DecRef()
}
@@ -863,9 +871,13 @@ func TestIPv4FragmentationReceive(t *testing.T) {
t.Fatalf("failed to parse packet: %x", pkt.Data.ToView())
}
+ addressableEndpoint, ok := ep.(stack.AddressableEndpoint)
+ if !ok {
+ t.Fatal("expected IPv4 network endpoint to implement stack.AddressableEndpoint")
+ }
addr := localIPv4Addr.WithPrefix()
- if ep, err := ep.AddAndAcquirePermanentAddress(addr, stack.CanBePrimaryEndpoint, stack.AddressConfigStatic, false /* deprecated */); err != nil {
- t.Fatalf("ep.AddAndAcquirePermanentAddress(%s, CanBePrimaryEndpoint, AddressConfigStatic, false): %s", addr, err)
+ if ep, err := addressableEndpoint.AddAndAcquirePermanentAddress(addr, stack.CanBePrimaryEndpoint, stack.AddressConfigStatic, false /* deprecated */); err != nil {
+ t.Fatalf("addressableEndpoint.AddAndAcquirePermanentAddress(%s, CanBePrimaryEndpoint, AddressConfigStatic, false): %s", addr, err)
} else {
ep.DecRef()
}
@@ -1038,9 +1050,13 @@ func TestIPv6ReceiveControl(t *testing.T) {
// Set ICMPv6 checksum.
icmp.SetChecksum(header.ICMPv6Checksum(icmp, outerSrcAddr, localIPv6Addr, buffer.VectorisedView{}))
+ addressableEndpoint, ok := ep.(stack.AddressableEndpoint)
+ if !ok {
+ t.Fatal("expected IPv6 network endpoint to implement stack.AddressableEndpoint")
+ }
addr := localIPv6Addr.WithPrefix()
- if ep, err := ep.AddAndAcquirePermanentAddress(addr, stack.CanBePrimaryEndpoint, stack.AddressConfigStatic, false /* deprecated */); err != nil {
- t.Fatalf("ep.AddAndAcquirePermanentAddress(%s, CanBePrimaryEndpoint, AddressConfigStatic, false): %s", addr, err)
+ if ep, err := addressableEndpoint.AddAndAcquirePermanentAddress(addr, stack.CanBePrimaryEndpoint, stack.AddressConfigStatic, false /* deprecated */); err != nil {
+ t.Fatalf("addressableEndpoint.AddAndAcquirePermanentAddress(%s, CanBePrimaryEndpoint, AddressConfigStatic, false): %s", addr, err)
} else {
ep.DecRef()
}
diff --git a/pkg/tcpip/network/ipv4/ipv4_test.go b/pkg/tcpip/network/ipv4/ipv4_test.go
index 8b0d2d794..4e4e1f3b4 100644
--- a/pkg/tcpip/network/ipv4/ipv4_test.go
+++ b/pkg/tcpip/network/ipv4/ipv4_test.go
@@ -2712,9 +2712,6 @@ func TestPacketQueing(t *testing.T) {
if err := s.CreateNIC(nicID, e); err != nil {
t.Fatalf("s.CreateNIC(%d, _): %s", nicID, err)
}
- if err := s.AddAddress(nicID, arp.ProtocolNumber, arp.ProtocolAddress); err != nil {
- t.Fatalf("s.AddAddress(%d, %d, %s): %s", nicID, arp.ProtocolNumber, arp.ProtocolAddress, err)
- }
if err := s.AddProtocolAddress(nicID, host1IPv4Addr); err != nil {
t.Fatalf("s.AddProtocolAddress(%d, %#v): %s", nicID, host1IPv4Addr, err)
}
diff --git a/pkg/tcpip/network/ipv6/icmp_test.go b/pkg/tcpip/network/ipv6/icmp_test.go
index 001b9d66a..9bc02d851 100644
--- a/pkg/tcpip/network/ipv6/icmp_test.go
+++ b/pkg/tcpip/network/ipv6/icmp_test.go
@@ -205,9 +205,13 @@ func TestICMPCounts(t *testing.T) {
t.Fatalf("ep.Enable(): %s", err)
}
+ addressableEndpoint, ok := ep.(stack.AddressableEndpoint)
+ if !ok {
+ t.Fatalf("expected network endpoint to implement stack.AddressableEndpoint")
+ }
addr := lladdr0.WithPrefix()
- if ep, err := ep.AddAndAcquirePermanentAddress(addr, stack.CanBePrimaryEndpoint, stack.AddressConfigStatic, false /* deprecated */); err != nil {
- t.Fatalf("ep.AddAndAcquirePermanentAddress(%s, CanBePrimaryEndpoint, AddressConfigStatic, false): %s", addr, err)
+ if ep, err := addressableEndpoint.AddAndAcquirePermanentAddress(addr, stack.CanBePrimaryEndpoint, stack.AddressConfigStatic, false /* deprecated */); err != nil {
+ t.Fatalf("addressableEndpoint.AddAndAcquirePermanentAddress(%s, CanBePrimaryEndpoint, AddressConfigStatic, false): %s", addr, err)
} else {
ep.DecRef()
}
@@ -343,9 +347,13 @@ func TestICMPCountsWithNeighborCache(t *testing.T) {
t.Fatalf("ep.Enable(): %s", err)
}
+ addressableEndpoint, ok := ep.(stack.AddressableEndpoint)
+ if !ok {
+ t.Fatalf("expected network endpoint to implement stack.AddressableEndpoint")
+ }
addr := lladdr0.WithPrefix()
- if ep, err := ep.AddAndAcquirePermanentAddress(addr, stack.CanBePrimaryEndpoint, stack.AddressConfigStatic, false /* deprecated */); err != nil {
- t.Fatalf("ep.AddAndAcquirePermanentAddress(%s, CanBePrimaryEndpoint, AddressConfigStatic, false): %s", addr, err)
+ if ep, err := addressableEndpoint.AddAndAcquirePermanentAddress(addr, stack.CanBePrimaryEndpoint, stack.AddressConfigStatic, false /* deprecated */); err != nil {
+ t.Fatalf("addressableEndpoint.AddAndAcquirePermanentAddress(%s, CanBePrimaryEndpoint, AddressConfigStatic, false): %s", addr, err)
} else {
ep.DecRef()
}
@@ -1769,9 +1777,13 @@ func TestCallsToNeighborCache(t *testing.T) {
t.Fatalf("ep.Enable(): %s", err)
}
+ addressableEndpoint, ok := ep.(stack.AddressableEndpoint)
+ if !ok {
+ t.Fatalf("expected network endpoint to implement stack.AddressableEndpoint")
+ }
addr := lladdr0.WithPrefix()
- if ep, err := ep.AddAndAcquirePermanentAddress(addr, stack.CanBePrimaryEndpoint, stack.AddressConfigStatic, false /* deprecated */); err != nil {
- t.Fatalf("ep.AddAndAcquirePermanentAddress(%s, CanBePrimaryEndpoint, AddressConfigStatic, false): %s", addr, err)
+ if ep, err := addressableEndpoint.AddAndAcquirePermanentAddress(addr, stack.CanBePrimaryEndpoint, stack.AddressConfigStatic, false /* deprecated */); err != nil {
+ t.Fatalf("addressableEndpoint.AddAndAcquirePermanentAddress(%s, CanBePrimaryEndpoint, AddressConfigStatic, false): %s", addr, err)
} else {
ep.DecRef()
}
diff --git a/pkg/tcpip/network/ipv6/ndp_test.go b/pkg/tcpip/network/ipv6/ndp_test.go
index be83e9eb4..37e8b1083 100644
--- a/pkg/tcpip/network/ipv6/ndp_test.go
+++ b/pkg/tcpip/network/ipv6/ndp_test.go
@@ -69,9 +69,13 @@ func setupStackAndEndpoint(t *testing.T, llladdr, rlladdr tcpip.Address, useNeig
}
t.Cleanup(ep.Close)
+ addressableEndpoint, ok := ep.(stack.AddressableEndpoint)
+ if !ok {
+ t.Fatalf("expected network endpoint to implement stack.AddressableEndpoint")
+ }
addr := llladdr.WithPrefix()
- if addressEP, err := ep.AddAndAcquirePermanentAddress(addr, stack.CanBePrimaryEndpoint, stack.AddressConfigStatic, false /* deprecated */); err != nil {
- t.Fatalf("ep.AddAndAcquirePermanentAddress(%s, CanBePrimaryEndpoint, AddressConfigStatic, false): %s", addr, err)
+ if addressEP, err := addressableEndpoint.AddAndAcquirePermanentAddress(addr, stack.CanBePrimaryEndpoint, stack.AddressConfigStatic, false /* deprecated */); err != nil {
+ t.Fatalf("addressableEndpoint.AddAndAcquirePermanentAddress(%s, CanBePrimaryEndpoint, AddressConfigStatic, false): %s", addr, err)
} else {
addressEP.DecRef()
}
diff --git a/pkg/tcpip/sample/tun_tcp_echo/main.go b/pkg/tcpip/sample/tun_tcp_echo/main.go
index 8e0ee1cd7..1c2afd554 100644
--- a/pkg/tcpip/sample/tun_tcp_echo/main.go
+++ b/pkg/tcpip/sample/tun_tcp_echo/main.go
@@ -148,10 +148,6 @@ func main() {
log.Fatal(err)
}
- if err := s.AddAddress(1, arp.ProtocolNumber, arp.ProtocolAddress); err != nil {
- log.Fatal(err)
- }
-
subnet, err := tcpip.NewSubnet(tcpip.Address(strings.Repeat("\x00", len(addr))), tcpip.AddressMask(strings.Repeat("\x00", len(addr))))
if err != nil {
log.Fatal(err)
diff --git a/pkg/tcpip/stack/nic.go b/pkg/tcpip/stack/nic.go
index 12134238e..3e6ceff28 100644
--- a/pkg/tcpip/stack/nic.go
+++ b/pkg/tcpip/stack/nic.go
@@ -321,16 +321,21 @@ func (n *NIC) setSpoofing(enable bool) {
// primaryAddress returns an address that can be used to communicate with
// remoteAddr.
func (n *NIC) primaryEndpoint(protocol tcpip.NetworkProtocolNumber, remoteAddr tcpip.Address) AssignableAddressEndpoint {
- n.mu.RLock()
- spoofing := n.mu.spoofing
- n.mu.RUnlock()
-
ep, ok := n.networkEndpoints[protocol]
if !ok {
return nil
}
- return ep.AcquireOutgoingPrimaryAddress(remoteAddr, spoofing)
+ addressableEndpoint, ok := ep.(AddressableEndpoint)
+ if !ok {
+ return nil
+ }
+
+ n.mu.RLock()
+ spoofing := n.mu.spoofing
+ n.mu.RUnlock()
+
+ return addressableEndpoint.AcquireOutgoingPrimaryAddress(remoteAddr, spoofing)
}
type getAddressBehaviour int
@@ -389,11 +394,17 @@ func (n *NIC) getAddressOrCreateTemp(protocol tcpip.NetworkProtocolNumber, addre
// getAddressOrCreateTempInner is like getAddressEpOrCreateTemp except a boolean
// is passed to indicate whether or not we should generate temporary endpoints.
func (n *NIC) getAddressOrCreateTempInner(protocol tcpip.NetworkProtocolNumber, address tcpip.Address, createTemp bool, peb PrimaryEndpointBehavior) AssignableAddressEndpoint {
- if ep, ok := n.networkEndpoints[protocol]; ok {
- return ep.AcquireAssignedAddress(address, createTemp, peb)
+ ep, ok := n.networkEndpoints[protocol]
+ if !ok {
+ return nil
}
- return nil
+ addressableEndpoint, ok := ep.(AddressableEndpoint)
+ if !ok {
+ return nil
+ }
+
+ return addressableEndpoint.AcquireAssignedAddress(address, createTemp, peb)
}
// addAddress adds a new address to n, so that it starts accepting packets
@@ -404,7 +415,12 @@ func (n *NIC) addAddress(protocolAddress tcpip.ProtocolAddress, peb PrimaryEndpo
return tcpip.ErrUnknownProtocol
}
- addressEndpoint, err := ep.AddAndAcquirePermanentAddress(protocolAddress.AddressWithPrefix, peb, AddressConfigStatic, false /* deprecated */)
+ addressableEndpoint, ok := ep.(AddressableEndpoint)
+ if !ok {
+ return tcpip.ErrNotSupported
+ }
+
+ addressEndpoint, err := addressableEndpoint.AddAndAcquirePermanentAddress(protocolAddress.AddressWithPrefix, peb, AddressConfigStatic, false /* deprecated */)
if err == nil {
// We have no need for the address endpoint.
addressEndpoint.DecRef()
@@ -417,7 +433,12 @@ func (n *NIC) addAddress(protocolAddress tcpip.ProtocolAddress, peb PrimaryEndpo
func (n *NIC) allPermanentAddresses() []tcpip.ProtocolAddress {
var addrs []tcpip.ProtocolAddress
for p, ep := range n.networkEndpoints {
- for _, a := range ep.PermanentAddresses() {
+ addressableEndpoint, ok := ep.(AddressableEndpoint)
+ if !ok {
+ continue
+ }
+
+ for _, a := range addressableEndpoint.PermanentAddresses() {
addrs = append(addrs, tcpip.ProtocolAddress{Protocol: p, AddressWithPrefix: a})
}
}
@@ -428,7 +449,12 @@ func (n *NIC) allPermanentAddresses() []tcpip.ProtocolAddress {
func (n *NIC) primaryAddresses() []tcpip.ProtocolAddress {
var addrs []tcpip.ProtocolAddress
for p, ep := range n.networkEndpoints {
- for _, a := range ep.PrimaryAddresses() {
+ addressableEndpoint, ok := ep.(AddressableEndpoint)
+ if !ok {
+ continue
+ }
+
+ for _, a := range addressableEndpoint.PrimaryAddresses() {
addrs = append(addrs, tcpip.ProtocolAddress{Protocol: p, AddressWithPrefix: a})
}
}
@@ -446,13 +472,23 @@ func (n *NIC) primaryAddress(proto tcpip.NetworkProtocolNumber) tcpip.AddressWit
return tcpip.AddressWithPrefix{}
}
- return ep.MainAddress()
+ addressableEndpoint, ok := ep.(AddressableEndpoint)
+ if !ok {
+ return tcpip.AddressWithPrefix{}
+ }
+
+ return addressableEndpoint.MainAddress()
}
// removeAddress removes an address from n.
func (n *NIC) removeAddress(addr tcpip.Address) *tcpip.Error {
for _, ep := range n.networkEndpoints {
- if err := ep.RemovePermanentAddress(addr); err == tcpip.ErrBadLocalAddress {
+ addressableEndpoint, ok := ep.(AddressableEndpoint)
+ if !ok {
+ continue
+ }
+
+ if err := addressableEndpoint.RemovePermanentAddress(addr); err == tcpip.ErrBadLocalAddress {
continue
} else {
return err
diff --git a/pkg/tcpip/stack/registration.go b/pkg/tcpip/stack/registration.go
index 79d024662..2cb13c6fa 100644
--- a/pkg/tcpip/stack/registration.go
+++ b/pkg/tcpip/stack/registration.go
@@ -524,8 +524,6 @@ type NetworkInterface interface {
// NetworkEndpoint is the interface that needs to be implemented by endpoints
// of network layer protocols (e.g., ipv4, ipv6).
type NetworkEndpoint interface {
- AddressableEndpoint
-
// Enable enables the endpoint.
//
// Must only be called when the stack is in a state that allows the endpoint
diff --git a/pkg/tcpip/tests/integration/forward_test.go b/pkg/tcpip/tests/integration/forward_test.go
index bf7594268..39343b966 100644
--- a/pkg/tcpip/tests/integration/forward_test.go
+++ b/pkg/tcpip/tests/integration/forward_test.go
@@ -229,19 +229,6 @@ func TestForwarding(t *testing.T) {
t.Fatalf("routerStack.SetForwarding(%d): %s", ipv6.ProtocolNumber, err)
}
- if err := host1Stack.AddAddress(host1NICID, arp.ProtocolNumber, arp.ProtocolAddress); err != nil {
- t.Fatalf("host1Stack.AddAddress(%d, %d, %s): %s", host1NICID, arp.ProtocolNumber, arp.ProtocolAddress, err)
- }
- if err := routerStack.AddAddress(routerNICID1, arp.ProtocolNumber, arp.ProtocolAddress); err != nil {
- t.Fatalf("routerStack.AddAddress(%d, %d, %s): %s", routerNICID1, arp.ProtocolNumber, arp.ProtocolAddress, err)
- }
- if err := routerStack.AddAddress(routerNICID2, arp.ProtocolNumber, arp.ProtocolAddress); err != nil {
- t.Fatalf("routerStack.AddAddress(%d, %d, %s): %s", routerNICID2, arp.ProtocolNumber, arp.ProtocolAddress, err)
- }
- if err := host2Stack.AddAddress(host2NICID, arp.ProtocolNumber, arp.ProtocolAddress); err != nil {
- t.Fatalf("host2Stack.AddAddress(%d, %d, %s): %s", host2NICID, arp.ProtocolNumber, arp.ProtocolAddress, err)
- }
-
if err := host1Stack.AddProtocolAddress(host1NICID, host1IPv4Addr); err != nil {
t.Fatalf("host1Stack.AddProtocolAddress(%d, %#v): %s", host1NICID, host1IPv4Addr, err)
}
diff --git a/pkg/tcpip/tests/integration/link_resolution_test.go b/pkg/tcpip/tests/integration/link_resolution_test.go
index fe7c1bb3d..bf8a1241f 100644
--- a/pkg/tcpip/tests/integration/link_resolution_test.go
+++ b/pkg/tcpip/tests/integration/link_resolution_test.go
@@ -140,13 +140,6 @@ func TestPing(t *testing.T) {
t.Fatalf("host2Stack.CreateNIC(%d, _): %s", host2NICID, err)
}
- if err := host1Stack.AddAddress(host1NICID, arp.ProtocolNumber, arp.ProtocolAddress); err != nil {
- t.Fatalf("host1Stack.AddAddress(%d, %d, %s): %s", host1NICID, arp.ProtocolNumber, arp.ProtocolAddress, err)
- }
- if err := host2Stack.AddAddress(host2NICID, arp.ProtocolNumber, arp.ProtocolAddress); err != nil {
- t.Fatalf("host2Stack.AddAddress(%d, %d, %s): %s", host2NICID, arp.ProtocolNumber, arp.ProtocolAddress, err)
- }
-
if err := host1Stack.AddProtocolAddress(host1NICID, ipv4Addr1); err != nil {
t.Fatalf("host1Stack.AddProtocolAddress(%d, %#v): %s", host1NICID, ipv4Addr1, err)
}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-05 15:34:02 +0000