diff options
| author | Ghanan Gowripalan <ghanan@google.com> | 2021-01-13 16:02:26 -0800 |
|---|---|---|
| committer | gVisor bot <gvisor-bot@google.com> | 2021-01-13 16:04:33 -0800 |
| commit | 25b5ec7135a6de80674ac1ad4d2289c29e156f42 (patch) | |
| tree | 5939fd3fd2e4afb2de9c4062cfd9066c544ab46e /pkg/syserr | |
| parent | 1efe0ebc5973ec8a06b881c087dae2183898504b (diff) | |
Do not resolve remote link address at transport layer
Link address resolution is performed at the link layer (if required) so
we can defer it from the transport layer. When link resolution is
required, packets will be queued and sent once link resolution
completes. If link resolution fails, the transport layer will receive a
control message indicating that the stack failed to route the packet.
tcpip.Endpoint.Write no longer returns a channel now that writes do not
wait for link resolution at the transport layer.
tcpip.ErrNoLinkAddress is no longer used so it is removed.
Removed calls to stack.Route.ResolveWith from the transport layer so
that link resolution is performed when a route is created in response
to an incoming packet (e.g. to complete TCP handshakes or send a RST).
Tests:
- integration_test.TestForwarding
- integration_test.TestTCPLinkResolutionFailure
Fixes #4458
RELNOTES: n/a
PiperOrigin-RevId: 351684158
Diffstat (limited to 'pkg/syserr')
| -rw-r--r-- | pkg/syserr/netstack.go | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/pkg/syserr/netstack.go b/pkg/syserr/netstack.go index 2756d4471..cb8981633 100644 --- a/pkg/syserr/netstack.go +++ b/pkg/syserr/netstack.go @@ -93,7 +93,6 @@ func init() { addErrMapping(tcpip.ErrConnectionAborted, ErrConnectionAborted) addErrMapping(tcpip.ErrNoSuchFile, ErrNoSuchFile) addErrMapping(tcpip.ErrInvalidOptionValue, ErrInvalidOptionValue) - addErrMapping(tcpip.ErrNoLinkAddress, ErrHostDown) addErrMapping(tcpip.ErrBadAddress, ErrBadAddress) addErrMapping(tcpip.ErrNetworkUnreachable, ErrNetworkUnreachable) addErrMapping(tcpip.ErrMessageTooLong, ErrMessageTooLong) |