diff options
| author | Ian Gudger <igudger@google.com> | 2020-06-23 19:14:05 -0700 |
|---|---|---|
| committer | gVisor bot <gvisor-bot@google.com> | 2020-06-23 19:15:38 -0700 |
| commit | 2141013dcef04de0591e36462ea997be1b6374d7 (patch) | |
| tree | 7d9eea880528202a3125f614c97dd5eb35c54d98 /pkg/tcpip/stack/stack.go | |
| parent | 0f328beb0d830a6e3b88b9f2cc1c9cb48f55c752 (diff) | |
Add support for SO_REUSEADDR to TCP sockets/endpoints.
For TCP sockets, SO_REUSEADDR relaxes the rules for binding addresses.
gVisor/netstack already supported a behavior similar to SO_REUSEADDR, but did
not allow disabling it. This change brings the SO_REUSEADDR behavior closer to
the behavior implemented by Linux and adds a new SO_REUSEADDR disabled
behavior. Like Linux, SO_REUSEADDR is now disabled by default.
PiperOrigin-RevId: 317984380
Diffstat (limited to 'pkg/tcpip/stack/stack.go')
| -rw-r--r-- | pkg/tcpip/stack/stack.go | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/pkg/tcpip/stack/stack.go b/pkg/tcpip/stack/stack.go index 51abe32a7..e92ec0c24 100644 --- a/pkg/tcpip/stack/stack.go +++ b/pkg/tcpip/stack/stack.go @@ -1408,6 +1408,12 @@ func (s *Stack) RegisterTransportEndpoint(nicID tcpip.NICID, netProtos []tcpip.N return s.demux.registerEndpoint(netProtos, protocol, id, ep, flags, bindToDevice) } +// CheckRegisterTransportEndpoint checks if an endpoint can be registered with +// the stack transport dispatcher. +func (s *Stack) CheckRegisterTransportEndpoint(nicID tcpip.NICID, netProtos []tcpip.NetworkProtocolNumber, protocol tcpip.TransportProtocolNumber, id TransportEndpointID, flags ports.Flags, bindToDevice tcpip.NICID) *tcpip.Error { + return s.demux.checkEndpoint(netProtos, protocol, id, flags, bindToDevice) +} + // UnregisterTransportEndpoint removes the endpoint with the given id from the // stack transport dispatcher. func (s *Stack) UnregisterTransportEndpoint(nicID tcpip.NICID, netProtos []tcpip.NetworkProtocolNumber, protocol tcpip.TransportProtocolNumber, id TransportEndpointID, ep TransportEndpoint, flags ports.Flags, bindToDevice tcpip.NICID) { |