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| author | Nayana Bidari <nybidari@google.com> | 2020-08-05 20:45:02 -0700 |
|---|---|---|
| committer | gVisor bot <gvisor-bot@google.com> | 2020-08-05 20:50:06 -0700 |
| commit | 35312a95c4c8626365b4ece5ffb0bcab44b4bede (patch) | |
| tree | ecf3ac9def6dcf0e366acfcd2e694a3965edb4dd /pkg/sentry/socket/netstack/stack.go | |
| parent | 7ed4b2b5a6928b3a4a88d0117a764dd4795be61a (diff) | |
Add loss recovery option for TCP.
/proc/sys/net/ipv4/tcp_recovery is used to enable RACK loss
recovery in TCP.
PiperOrigin-RevId: 325157807
Diffstat (limited to 'pkg/sentry/socket/netstack/stack.go')
| -rw-r--r-- | pkg/sentry/socket/netstack/stack.go | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/pkg/sentry/socket/netstack/stack.go b/pkg/sentry/socket/netstack/stack.go index 67737ae87..f0fe18684 100644 --- a/pkg/sentry/socket/netstack/stack.go +++ b/pkg/sentry/socket/netstack/stack.go @@ -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) { |