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| author | Bhasker Hariharan <bhaskerh@google.com> | 2020-05-13 19:47:42 -0700 |
|---|---|---|
| committer | gVisor bot <gvisor-bot@google.com> | 2020-05-13 19:49:09 -0700 |
| commit | 8b8774d7152eb61fc6273bbae679e80c34188517 (patch) | |
| tree | 6146c3e1a476a52cf7cbbc1c725b81c87edfb165 /pkg/tcpip/tcpip.go | |
| parent | 64afaf0e9bb712938f3621b8588840b5398b883c (diff) | |
Stub support for TCP_SYNCNT and TCP_WINDOW_CLAMP.
This change adds support for TCP_SYNCNT and TCP_WINDOW_CLAMP options
in GetSockOpt/SetSockOpt. This change does not really change any
behaviour in Netstack and only stores/returns the stored value.
Actual honoring of these options will be added as required.
Fixes #2626, #2625
PiperOrigin-RevId: 311453777
Diffstat (limited to 'pkg/tcpip/tcpip.go')
| -rw-r--r-- | pkg/tcpip/tcpip.go | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/pkg/tcpip/tcpip.go b/pkg/tcpip/tcpip.go index 1ca4088c9..6270146fa 100644 --- a/pkg/tcpip/tcpip.go +++ b/pkg/tcpip/tcpip.go @@ -622,6 +622,19 @@ const ( // // A zero value indicates the default. TTLOption + + // TCPSynCountOption is used by SetSockOpt/GetSockOpt to specify the number of + // SYN retransmits that TCP should send before aborting the attempt to + // connect. It cannot exceed 255. + // + // NOTE: This option is currently only stubbed out and is no-op. + TCPSynCountOption + + // TCPWindowClampOption is used by SetSockOpt/GetSockOpt to bound the size + // of the advertised window to this value. + // + // NOTE: This option is currently only stubed out and is a no-op + TCPWindowClampOption ) // ErrorOption is used in GetSockOpt to specify that the last error reported by @@ -690,6 +703,10 @@ type TCPMinRTOOption time.Duration // switches to using SYN cookies. type TCPSynRcvdCountThresholdOption uint64 +// TCPSynRetriesOption is used by SetSockOpt/GetSockOpt to specify stack-wide +// default for number of times SYN is retransmitted before aborting a connect. +type TCPSynRetriesOption uint8 + // MulticastInterfaceOption is used by SetSockOpt/GetSockOpt to specify a // default interface for multicast. type MulticastInterfaceOption struct { |