diff options
| author | Ghanan Gowripalan <ghanan@google.com> | 2021-09-01 19:41:43 -0700 |
|---|---|---|
| committer | gVisor bot <gvisor-bot@google.com> | 2021-09-01 19:44:22 -0700 |
| commit | dfb3273f887a80c25a6d133fd5a082153ba58570 (patch) | |
| tree | 3992649b8e1a81f21da5e22c52aec581e1244718 /pkg/tcpip/transport/raw | |
| parent | 2d3919532a7531083a5e4db956401ff0e1356a77 (diff) | |
Support sending with packet sockets
...through the loopback interface, only.
This change only supports sending on packet sockets through the loopback
interface as the loopback interface is the only interface used in packet
socket syscall tests - the other link endpoints are not excercised with
the existing test infrastructure.
Support for sending on packet sockets through the other interfaces will
be added as needed.
BUG: https://fxbug.dev/81592
PiperOrigin-RevId: 394368899
Diffstat (limited to 'pkg/tcpip/transport/raw')
| -rw-r--r-- | pkg/tcpip/transport/raw/endpoint.go | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/pkg/tcpip/transport/raw/endpoint.go b/pkg/tcpip/transport/raw/endpoint.go index 55854ba59..3bf6c0a8f 100644 --- a/pkg/tcpip/transport/raw/endpoint.go +++ b/pkg/tcpip/transport/raw/endpoint.go @@ -281,6 +281,7 @@ func (e *endpoint) write(p tcpip.Payloader, opts tcpip.WriteOptions) (int64, tcp return nil, nil, nil, &tcpip.ErrInvalidEndpointState{} } + // TODO(https://gvisor.dev/issue/6538): Avoid this allocation. payloadBytes := make([]byte, p.Len()) if _, err := io.ReadFull(p, payloadBytes); err != nil { return nil, nil, nil, &tcpip.ErrBadBuffer{} @@ -600,6 +601,9 @@ func (e *endpoint) HandlePacket(pkt *stack.PacketBuffer) { // We copy headers' underlying bytes because pkt.*Header may point to // the middle of a slice, and another struct may point to the "outer" // slice. Save/restore doesn't support overlapping slices and will fail. + // + // TODO(https://gvisor.dev/issue/6517): Avoid the copy once S/R supports + // overlapping slices. var combinedVV buffer.VectorisedView if e.TransportEndpointInfo.NetProto == header.IPv4ProtocolNumber { network, transport := pkt.NetworkHeader().View(), pkt.TransportHeader().View() |