diff options
| author | Kevin Krakauer <krakauer@google.com> | 2020-06-11 20:33:56 -0700 |
|---|---|---|
| committer | Kevin Krakauer <krakauer@google.com> | 2020-07-31 10:47:26 -0700 |
| commit | 2a7b2a61e3ea32129c26eeaa6fab3d81a5d8ad6e (patch) | |
| tree | 38abd6504df18c8b0caa881bd8fdeef45f6d8e23 /pkg/tcpip/transport/tcp | |
| parent | 68a7da9549ac4f6290fe85d2dab550e11f16b209 (diff) | |
iptables: support SO_ORIGINAL_DST
Envoy (#170) uses this to get the original destination of redirected
packets.
Diffstat (limited to 'pkg/tcpip/transport/tcp')
| -rw-r--r-- | pkg/tcpip/transport/tcp/endpoint.go | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/pkg/tcpip/transport/tcp/endpoint.go b/pkg/tcpip/transport/tcp/endpoint.go index 0f7487963..682687ebe 100644 --- a/pkg/tcpip/transport/tcp/endpoint.go +++ b/pkg/tcpip/transport/tcp/endpoint.go @@ -2017,6 +2017,17 @@ func (e *endpoint) GetSockOpt(opt interface{}) *tcpip.Error { *o = tcpip.TCPDeferAcceptOption(e.deferAccept) e.UnlockUser() + case *tcpip.OriginalDestinationOption: + ipt := e.stack.IPTables() + addr, port, err := ipt.OriginalDst(e.ID) + if err != nil { + return err + } + *o = tcpip.OriginalDestinationOption{ + Addr: addr, + Port: port, + } + default: return tcpip.ErrUnknownProtocolOption } |