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Add loss recovery option for TCP.

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/proc/sys/net/ipv4/tcp_recovery is used to enable RACK loss
recovery in TCP.

PiperOrigin-RevId: 325157807
This commit is contained in:
Nayana Bidari
2020-08-05 20:50:06 -07:00
committed by gVisor bot
parent 7ed4b2b5a6
commit 35312a95c4
8 changed files with 268 additions and 1 deletions
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pkg/sentry/socket/netstack/stack.go
+14
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@@ -207,6 +207,20 @@ func (s *Stack) SetTCPSACKEnabled(enabled bool) error {
return syserr.TranslateNetstackError(s.Stack.SetTransportProtocolOption(tcp.ProtocolNumber, tcp.SACKEnabled(enabled))).ToError()
}
// TCPRecovery implements inet.Stack.TCPRecovery.
func (s *Stack) TCPRecovery() (inet.TCPLossRecovery, error) {
var recovery tcp.Recovery
if err := s.Stack.TransportProtocolOption(tcp.ProtocolNumber, &recovery); err != nil {
return 0, syserr.TranslateNetstackError(err).ToError()
}
return inet.TCPLossRecovery(recovery), nil
}
// SetTCPRecovery implements inet.Stack.SetTCPRecovery.
func (s *Stack) SetTCPRecovery(recovery inet.TCPLossRecovery) error {
return syserr.TranslateNetstackError(s.Stack.SetTransportProtocolOption(tcp.ProtocolNumber, tcp.Recovery(recovery))).ToError()
}
// Statistics implements inet.Stack.Statistics.
func (s *Stack) Statistics(stat interface{}, arg string) error {
switch stats := stat.(type) {