diff options
Diffstat (limited to 'pkg/tcpip/stack/registration.go')
| -rw-r--r-- | pkg/tcpip/stack/registration.go | 55 |
1 files changed, 37 insertions, 18 deletions
diff --git a/pkg/tcpip/stack/registration.go b/pkg/tcpip/stack/registration.go index 924790779..0f6ec92c9 100644 --- a/pkg/tcpip/stack/registration.go +++ b/pkg/tcpip/stack/registration.go @@ -513,6 +513,23 @@ type NetworkInterface interface { // WritePacketToRemote writes the packet to the given remote link address. WritePacketToRemote(tcpip.LinkAddress, *GSO, tcpip.NetworkProtocolNumber, *PacketBuffer) *tcpip.Error + + // WritePacket writes a packet with the given protocol through the given + // route. + // + // WritePacket takes ownership of the packet buffer. The packet buffer's + // network and transport header must be set. + WritePacket(*Route, *GSO, tcpip.NetworkProtocolNumber, *PacketBuffer) *tcpip.Error + + // WritePackets writes packets with the given protocol through the given + // route. Must not be called with an empty list of packet buffers. + // + // WritePackets takes ownership of the packet buffers. + // + // Right now, WritePackets is used only when the software segmentation + // offload is enabled. If it will be used for something else, syscall filters + // may need to be updated. + WritePackets(*Route, *GSO, PacketBufferList, tcpip.NetworkProtocolNumber) (int, *tcpip.Error) } // LinkResolvableNetworkEndpoint handles link resolution events. @@ -708,24 +725,6 @@ type NetworkLinkEndpoint interface { // LinkAddress returns the link address (typically a MAC) of the // endpoint. LinkAddress() tcpip.LinkAddress - - // WritePacket writes a packet with the given protocol through the - // given route. It takes ownership of pkt. pkt.NetworkHeader and - // pkt.TransportHeader must have already been set. - // - // To participate in transparent bridging, a LinkEndpoint implementation - // should call eth.Encode with header.EthernetFields.SrcAddr set to - // r.LocalLinkAddress if it is provided. - WritePacket(r *Route, gso *GSO, protocol tcpip.NetworkProtocolNumber, pkt *PacketBuffer) *tcpip.Error - - // WritePackets writes packets with the given protocol through the - // given route. pkts must not be zero length. It takes ownership of pkts and - // underlying packets. - // - // Right now, WritePackets is used only when the software segmentation - // offload is enabled. If it will be used for something else, it may - // require to change syscall filters. - WritePackets(r *Route, gso *GSO, pkts PacketBufferList, protocol tcpip.NetworkProtocolNumber) (int, *tcpip.Error) } // LinkEndpoint is the interface implemented by data link layer protocols (e.g., @@ -768,6 +767,26 @@ type LinkEndpoint interface { // AddHeader adds a link layer header to pkt if required. AddHeader(local, remote tcpip.LinkAddress, protocol tcpip.NetworkProtocolNumber, pkt *PacketBuffer) + + // WritePacket writes a packet with the given protocol and route. + // + // WritePacket takes ownership of the packet buffer. The packet buffer's + // network and transport header must be set. + // + // To participate in transparent bridging, a LinkEndpoint implementation + // should call eth.Encode with header.EthernetFields.SrcAddr set to + // r.LocalLinkAddress if it is provided. + WritePacket(RouteInfo, *GSO, tcpip.NetworkProtocolNumber, *PacketBuffer) *tcpip.Error + + // WritePackets writes packets with the given protocol and route. Must not be + // called with an empty list of packet buffers. + // + // WritePackets takes ownership of the packet buffers. + // + // Right now, WritePackets is used only when the software segmentation + // offload is enabled. If it will be used for something else, syscall filters + // may need to be updated. + WritePackets(RouteInfo, *GSO, PacketBufferList, tcpip.NetworkProtocolNumber) (int, *tcpip.Error) } // InjectableLinkEndpoint is a LinkEndpoint where inbound packets are |