diff options
Diffstat (limited to 'pkg/tcpip/stack/registration.go')
| -rw-r--r-- | pkg/tcpip/stack/registration.go | 33 |
1 files changed, 14 insertions, 19 deletions
diff --git a/pkg/tcpip/stack/registration.go b/pkg/tcpip/stack/registration.go index defb9129b..be9bd8042 100644 --- a/pkg/tcpip/stack/registration.go +++ b/pkg/tcpip/stack/registration.go @@ -475,8 +475,6 @@ type NDPEndpoint interface { // NetworkInterface is a network interface. type NetworkInterface interface { - NetworkLinkEndpoint - // ID returns the interface's ID. ID() tcpip.NICID @@ -490,6 +488,9 @@ type NetworkInterface interface { // Enabled returns true if the interface is enabled. Enabled() bool + + // LinkEndpoint returns the link endpoint backing the interface. + LinkEndpoint() LinkEndpoint } // NetworkEndpoint is the interface that needs to be implemented by endpoints @@ -662,15 +663,22 @@ const ( CapabilitySoftwareGSO ) -// NetworkLinkEndpoint is a data-link layer that supports sending network -// layer packets. -type NetworkLinkEndpoint interface { +// LinkEndpoint is the interface implemented by data link layer protocols (e.g., +// ethernet, loopback, raw) and used by network layer protocols to send packets +// out through the implementer's data link endpoint. When a link header exists, +// it sets each PacketBuffer's LinkHeader field before passing it up the +// stack. +type LinkEndpoint interface { // MTU is the maximum transmission unit for this endpoint. This is // usually dictated by the backing physical network; when such a // physical network doesn't exist, the limit is generally 64k, which // includes the maximum size of an IP packet. MTU() uint32 + // Capabilities returns the set of capabilities supported by the + // endpoint. + Capabilities() LinkEndpointCapabilities + // MaxHeaderLength returns the maximum size the data link (and // lower level layers combined) headers can have. Higher levels use this // information to reserve space in the front of the packets they're @@ -678,7 +686,7 @@ type NetworkLinkEndpoint interface { MaxHeaderLength() uint16 // LinkAddress returns the link address (typically a MAC) of the - // endpoint. + // link endpoint. LinkAddress() tcpip.LinkAddress // WritePacket writes a packet with the given protocol through the @@ -698,19 +706,6 @@ type NetworkLinkEndpoint interface { // 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., -// ethernet, loopback, raw) and used by network layer protocols to send packets -// out through the implementer's data link endpoint. When a link header exists, -// it sets each PacketBuffer's LinkHeader field before passing it up the -// stack. -type LinkEndpoint interface { - NetworkLinkEndpoint - - // Capabilities returns the set of capabilities supported by the - // endpoint. - Capabilities() LinkEndpointCapabilities // WriteRawPacket writes a packet directly to the link. The packet // should already have an ethernet header. It takes ownership of vv. |