diff options
Diffstat (limited to 'pkg/sentry/inet/inet.go')
| -rw-r--r-- | pkg/sentry/inet/inet.go | 36 |
1 files changed, 35 insertions, 1 deletions
diff --git a/pkg/sentry/inet/inet.go b/pkg/sentry/inet/inet.go index 6217100b2..fbe6d6aa6 100644 --- a/pkg/sentry/inet/inet.go +++ b/pkg/sentry/inet/inet.go @@ -15,7 +15,10 @@ // Package inet defines semantics for IP stacks. package inet -import "gvisor.dev/gvisor/pkg/tcpip" +import ( + "gvisor.dev/gvisor/pkg/tcpip" + "gvisor.dev/gvisor/pkg/tcpip/stack" +) // Stack represents a TCP/IP stack. type Stack interface { @@ -28,6 +31,10 @@ type Stack interface { // interface indexes to a slice of associated interface address properties. InterfaceAddrs() map[int32][]InterfaceAddr + // AddInterfaceAddr adds an address to the network interface identified by + // index. + AddInterfaceAddr(idx int32, addr InterfaceAddr) error + // SupportsIPv6 returns true if the stack supports IPv6 connectivity. SupportsIPv6() bool @@ -52,6 +59,12 @@ type Stack interface { // settings. SetTCPSACKEnabled(enabled bool) error + // TCPRecovery returns the TCP loss detection algorithm. + TCPRecovery() (TCPLossRecovery, error) + + // SetTCPRecovery attempts to change TCP loss detection algorithm. + SetTCPRecovery(recovery TCPLossRecovery) error + // Statistics reports stack statistics. Statistics(stat interface{}, arg string) error @@ -61,6 +74,16 @@ type Stack interface { // Resume restarts the network stack after restore. Resume() + // RegisteredEndpoints returns all endpoints which are currently registered. + RegisteredEndpoints() []stack.TransportEndpoint + + // CleanupEndpoints returns endpoints currently in the cleanup state. + CleanupEndpoints() []stack.TransportEndpoint + + // RestoreCleanupEndpoints adds endpoints to cleanup tracking. This is useful + // for restoring a stack after a save. + RestoreCleanupEndpoints([]stack.TransportEndpoint) + // Forwarding returns if packet forwarding between NICs is enabled. Forwarding(protocol tcpip.NetworkProtocolNumber) bool @@ -181,3 +204,14 @@ type StatSNMPUDP [8]uint64 // StatSNMPUDPLite describes UdpLite line of /proc/net/snmp. type StatSNMPUDPLite [8]uint64 + +// TCPLossRecovery indicates TCP loss detection and recovery methods to use. +type TCPLossRecovery int32 + +// Loss recovery constants from include/net/tcp.h which are used to set +// /proc/sys/net/ipv4/tcp_recovery. +const ( + TCP_RACK_LOSS_DETECTION TCPLossRecovery = 1 << iota + TCP_RACK_STATIC_REO_WND + TCP_RACK_NO_DUPTHRESH +) |