diff options
| author | Bert Muthalaly <stijlist@google.com> | 2018-09-19 13:42:55 -0700 |
|---|---|---|
| committer | Shentubot <shentubot@google.com> | 2018-09-19 13:43:58 -0700 |
| commit | 2e497de2d9f6c410a214faae9962e762757b0648 (patch) | |
| tree | 992c064bd360dc50f8369d76d1481e5eb58ec612 /pkg/tcpip/link/loopback/loopback.go | |
| parent | f0a92b6b67382a1f8da5ef2622c59afdb1c40f13 (diff) | |
Pass local link address to DeliverNetworkPacket
This allows a NetworkDispatcher to implement transparent bridging,
assuming all implementations of LinkEndpoint.WritePacket call eth.Encode
with header.EthernetFields.SrcAddr set to the passed
Route.LocalLinkAddress, if it is provided.
PiperOrigin-RevId: 213686651
Change-Id: I446a4ac070970202f0724ef796ff1056ae4dd72a
Diffstat (limited to 'pkg/tcpip/link/loopback/loopback.go')
| -rw-r--r-- | pkg/tcpip/link/loopback/loopback.go | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/pkg/tcpip/link/loopback/loopback.go b/pkg/tcpip/link/loopback/loopback.go index 554ad64de..fc3f80c01 100644 --- a/pkg/tcpip/link/loopback/loopback.go +++ b/pkg/tcpip/link/loopback/loopback.go @@ -77,7 +77,11 @@ func (e *endpoint) WritePacket(_ *stack.Route, hdr buffer.Prependable, payload b views[0] = hdr.View() views = append(views, payload.Views()...) vv := buffer.NewVectorisedView(len(views[0])+payload.Size(), views) - e.dispatcher.DeliverNetworkPacket(e, "", protocol, vv) + + // Because we're immediately turning around and writing the packet back to the + // rx path, we intentionally don't preserve the remote and local link + // addresses from the stack.Route we're passed. + e.dispatcher.DeliverNetworkPacket(e, "" /* remoteLinkAddr */, "" /* localLinkAddr */, protocol, vv) return nil } |