diff options
| author | Andrei Vagin <avagin@google.com> | 2018-12-28 11:26:01 -0800 |
|---|---|---|
| committer | Shentubot <shentubot@google.com> | 2018-12-28 11:27:14 -0800 |
| commit | 652d068119052b0b3bc4a0808a4400a22380a30b (patch) | |
| tree | f5a617063151ffb9563ebbcd3189611e854952db /pkg/sentry/socket/epsocket | |
| parent | a3217b71723a93abb7a2aca535408ab84d81ac2f (diff) | |
Implement SO_REUSEPORT for TCP and UDP sockets
This option allows multiple sockets to be bound to the same port.
Incoming packets are distributed to sockets using a hash based on source and
destination addresses. This means that all packets from one sender will be
received by the same server socket.
PiperOrigin-RevId: 227153413
Change-Id: I59b6edda9c2209d5b8968671e9129adb675920cf
Diffstat (limited to 'pkg/sentry/socket/epsocket')
| -rw-r--r-- | pkg/sentry/socket/epsocket/epsocket.go | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/pkg/sentry/socket/epsocket/epsocket.go b/pkg/sentry/socket/epsocket/epsocket.go index 1b9c75949..d65b5f49e 100644 --- a/pkg/sentry/socket/epsocket/epsocket.go +++ b/pkg/sentry/socket/epsocket/epsocket.go @@ -634,6 +634,18 @@ func getSockOptSocket(t *kernel.Task, s socket.Socket, ep commonEndpoint, family return int32(v), nil + case linux.SO_REUSEPORT: + if outLen < sizeOfInt32 { + return nil, syserr.ErrInvalidArgument + } + + var v tcpip.ReusePortOption + if err := ep.GetSockOpt(&v); err != nil { + return nil, syserr.TranslateNetstackError(err) + } + + return int32(v), nil + case linux.SO_KEEPALIVE: if outLen < sizeOfInt32 { return nil, syserr.ErrInvalidArgument @@ -900,6 +912,14 @@ func setSockOptSocket(t *kernel.Task, s socket.Socket, ep commonEndpoint, name i v := usermem.ByteOrder.Uint32(optVal) return syserr.TranslateNetstackError(ep.SetSockOpt(tcpip.ReuseAddressOption(v))) + case linux.SO_REUSEPORT: + if len(optVal) < sizeOfInt32 { + return syserr.ErrInvalidArgument + } + + v := usermem.ByteOrder.Uint32(optVal) + return syserr.TranslateNetstackError(ep.SetSockOpt(tcpip.ReusePortOption(v))) + case linux.SO_PASSCRED: if len(optVal) < sizeOfInt32 { return syserr.ErrInvalidArgument |