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| author | Ian Gudger <igudger@google.com> | 2019-09-20 14:08:46 -0700 |
|---|---|---|
| committer | gVisor bot <gvisor-bot@google.com> | 2019-09-20 14:10:02 -0700 |
| commit | 002f1d4aaefa9abdd50e3e8906ae828c31d038e6 (patch) | |
| tree | 9c225e9de0c453232d51687fe3a999e5554563a2 /pkg/tcpip/stack/registration.go | |
| parent | e9af227a61b836310fdd0c8543c31afe094af5ae (diff) | |
Allow waiting for LinkEndpoint worker goroutines to finish.
Previously, the only safe way to use an fdbased endpoint was to leak the FD.
This change makes it possible to safely close the FD.
This is the first step towards having stoppable stacks.
Updates #837
PiperOrigin-RevId: 270346582
Diffstat (limited to 'pkg/tcpip/stack/registration.go')
| -rw-r--r-- | pkg/tcpip/stack/registration.go | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/pkg/tcpip/stack/registration.go b/pkg/tcpip/stack/registration.go index 88a698b18..07e4c770d 100644 --- a/pkg/tcpip/stack/registration.go +++ b/pkg/tcpip/stack/registration.go @@ -295,6 +295,15 @@ type LinkEndpoint interface { // IsAttached returns whether a NetworkDispatcher is attached to the // endpoint. IsAttached() bool + + // Wait waits for any worker goroutines owned by the endpoint to stop. + // + // For now, requesting that an endpoint's worker goroutine(s) stop is + // implementation specific. + // + // Wait will not block if the endpoint hasn't started any goroutines + // yet, even if it might later. + Wait() } // InjectableLinkEndpoint is a LinkEndpoint where inbound packets are |