diff options
Diffstat (limited to 'pkg/tcpip/stack/registration.go')
| -rw-r--r-- | pkg/tcpip/stack/registration.go | 41 |
1 files changed, 23 insertions, 18 deletions
diff --git a/pkg/tcpip/stack/registration.go b/pkg/tcpip/stack/registration.go index b6f823b54..defb9129b 100644 --- a/pkg/tcpip/stack/registration.go +++ b/pkg/tcpip/stack/registration.go @@ -208,6 +208,10 @@ const ( // transport layer and callers need not take any further action. TransportPacketHandled TransportPacketDisposition = iota + // TransportPacketProtocolUnreachable indicates that the transport + // protocol requested in the packet is not supported. + TransportPacketProtocolUnreachable + // TransportPacketDestinationPortUnreachable indicates that there weren't any // listeners interested in the packet and the transport protocol has no means // to notify the sender. @@ -322,10 +326,6 @@ const ( // AssignableAddressEndpoint is a reference counted address endpoint that may be // assigned to a NetworkEndpoint. type AssignableAddressEndpoint interface { - // NetworkEndpoint returns the NetworkEndpoint the receiver is associated - // with. - NetworkEndpoint() NetworkEndpoint - // AddressWithPrefix returns the endpoint's address. AddressWithPrefix() tcpip.AddressWithPrefix @@ -475,6 +475,8 @@ type NDPEndpoint interface { // NetworkInterface is a network interface. type NetworkInterface interface { + NetworkLinkEndpoint + // ID returns the interface's ID. ID() tcpip.NICID @@ -488,9 +490,6 @@ 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 @@ -663,22 +662,15 @@ const ( CapabilitySoftwareGSO ) -// 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 is a data-link layer that supports sending network +// layer packets. +type NetworkLinkEndpoint 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 @@ -686,7 +678,7 @@ type LinkEndpoint interface { MaxHeaderLength() uint16 // LinkAddress returns the link address (typically a MAC) of the - // link endpoint. + // endpoint. LinkAddress() tcpip.LinkAddress // WritePacket writes a packet with the given protocol through the @@ -706,6 +698,19 @@ type LinkEndpoint 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. |