From 80f901b16b8bb8fe397cc44578035173f5155b24 Mon Sep 17 00:00:00 2001 From: Ian Gudger Date: Thu, 7 Feb 2019 23:14:06 -0800 Subject: Plumb IP_ADD_MEMBERSHIP and IP_DROP_MEMBERSHIP to netstack. Also includes a few fixes for IPv4 multicast support. IPv6 support is coming in a followup CL. PiperOrigin-RevId: 233008638 Change-Id: If7dae6222fef43fda48033f0292af77832d95e82 --- pkg/tcpip/stack/stack.go | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'pkg/tcpip/stack') diff --git a/pkg/tcpip/stack/stack.go b/pkg/tcpip/stack/stack.go index 7aa9dbd46..854ebe1bb 100644 --- a/pkg/tcpip/stack/stack.go +++ b/pkg/tcpip/stack/stack.go @@ -742,6 +742,9 @@ func (s *Stack) FindRoute(id tcpip.NICID, localAddr, remoteAddr tcpip.Address, n return Route{}, tcpip.ErrNoRoute } + // TODO: Route multicast packets with no specified local + // address or NIC. + for i := range s.routeTable { if (id != 0 && id != s.routeTable[i].NIC) || (len(remoteAddr) != 0 && !s.routeTable[i].Match(remoteAddr)) { continue @@ -768,6 +771,10 @@ func (s *Stack) FindRoute(id tcpip.NICID, localAddr, remoteAddr tcpip.Address, n return r, nil } + if isMulticast { + return Route{}, tcpip.ErrNetworkUnreachable + } + return Route{}, tcpip.ErrNoRoute } -- cgit v1.2.3