From 56a61282953b46c8f8b707d5948a2d3958dced0c Mon Sep 17 00:00:00 2001
From: Ian Gudger <igudger@google.com>
Date: Fri, 8 Mar 2019 15:48:16 -0800
Subject: Implement IP_MULTICAST_LOOP.
IP_MULTICAST_LOOP controls whether or not multicast packets sent on the default
route are looped back. In order to implement this switch, support for sending
and looping back multicast packets on the default route had to be implemented.
For now we only support IPv4 multicast.
PiperOrigin-RevId: 237534603
Change-Id: I490ac7ff8e8ebef417c7eb049a919c29d156ac1c
---
pkg/tcpip/transport/tcp/endpoint.go | 2 +-
pkg/tcpip/transport/tcp/endpoint_state.go | 1 +
2 files changed, 2 insertions(+), 1 deletion(-)
(limited to 'pkg/tcpip/transport/tcp')
diff --git a/pkg/tcpip/transport/tcp/endpoint.go b/pkg/tcpip/transport/tcp/endpoint.go
index ae99f0f8e..fc4f82402 100644
--- a/pkg/tcpip/transport/tcp/endpoint.go
+++ b/pkg/tcpip/transport/tcp/endpoint.go
@@ -1091,7 +1091,7 @@ func (e *endpoint) connect(addr tcpip.FullAddress, handshake bool, run bool) (er
}
// Find a route to the desired destination.
- r, err := e.stack.FindRoute(nicid, e.id.LocalAddress, addr.Addr, netProto)
+ r, err := e.stack.FindRoute(nicid, e.id.LocalAddress, addr.Addr, netProto, false /* multicastLoop */)
if err != nil {
return err
}
diff --git a/pkg/tcpip/transport/tcp/endpoint_state.go b/pkg/tcpip/transport/tcp/endpoint_state.go
index 87e988afa..a42e09b8c 100644
--- a/pkg/tcpip/transport/tcp/endpoint_state.go
+++ b/pkg/tcpip/transport/tcp/endpoint_state.go
@@ -307,6 +307,7 @@ func loadError(s string) *tcpip.Error {
var errors = []*tcpip.Error{
tcpip.ErrUnknownProtocol,
tcpip.ErrUnknownNICID,
+ tcpip.ErrUnknownDevice,
tcpip.ErrUnknownProtocolOption,
tcpip.ErrDuplicateNICID,
tcpip.ErrDuplicateAddress,
--
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