diff options
Diffstat (limited to 'pkg/tcpip/stack/route.go')
| -rw-r--r-- | pkg/tcpip/stack/route.go | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/pkg/tcpip/stack/route.go b/pkg/tcpip/stack/route.go index 3d4c282a9..36d7b6ac7 100644 --- a/pkg/tcpip/stack/route.go +++ b/pkg/tcpip/stack/route.go @@ -15,10 +15,10 @@ package stack import ( - "gvisor.googlesource.com/gvisor/pkg/sleep" - "gvisor.googlesource.com/gvisor/pkg/tcpip" - "gvisor.googlesource.com/gvisor/pkg/tcpip/buffer" - "gvisor.googlesource.com/gvisor/pkg/tcpip/header" + "gvisor.dev/gvisor/pkg/sleep" + "gvisor.dev/gvisor/pkg/tcpip" + "gvisor.dev/gvisor/pkg/tcpip/buffer" + "gvisor.dev/gvisor/pkg/tcpip/header" ) // Route represents a route through the networking stack to a given destination. @@ -187,3 +187,13 @@ func (r *Route) Clone() Route { r.ref.incRef() return *r } + +// MakeLoopedRoute duplicates the given route and tweaks it in case of multicast. +func (r *Route) MakeLoopedRoute() Route { + l := r.Clone() + if header.IsV4MulticastAddress(r.RemoteAddress) || header.IsV6MulticastAddress(r.RemoteAddress) { + l.RemoteAddress, l.LocalAddress = l.LocalAddress, l.RemoteAddress + l.RemoteLinkAddress = l.LocalLinkAddress + } + return l +} |