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authorBhasker Hariharan <bhaskerh@google.com>2019-07-12 13:34:06 -0700
committergVisor bot <gvisor-bot@google.com>2019-07-12 13:35:17 -0700
commit6116473b2ffdea90a4a97196e265c6d93e53ce00 (patch)
tree74bd41319077af4042bd95cb9a7019869f0fe3a6 /pkg/tcpip/tcpip.go
parent8f11e257c9fbbde4ea2232f54313812a4c4a1fe9 (diff)
Stub out support for TCP_MAXSEG.
Adds support to set/get the TCP_MAXSEG value but does not really change the segment sizes emitted by netstack or alter the MSS advertised by the endpoint. This is currently being added only to unblock iperf3 on gVisor. Plumbing this correctly requires a bit more work which will come in separate CLs. PiperOrigin-RevId: 257859112
Diffstat (limited to 'pkg/tcpip/tcpip.go')
-rw-r--r--pkg/tcpip/tcpip.go4
1 files changed, 4 insertions, 0 deletions
diff --git a/pkg/tcpip/tcpip.go b/pkg/tcpip/tcpip.go
index c61f96fb0..c4076666a 100644
--- a/pkg/tcpip/tcpip.go
+++ b/pkg/tcpip/tcpip.go
@@ -496,6 +496,10 @@ type AvailableCongestionControlOption string
// buffer moderation.
type ModerateReceiveBufferOption bool
+// MaxSegOption is used by SetSockOpt/GetSockOpt to set/get the current
+// Maximum Segment Size(MSS) value as specified using the TCP_MAXSEG option.
+type MaxSegOption int
+
// MulticastTTLOption is used by SetSockOpt/GetSockOpt to control the default
// TTL value for multicast messages. The default is 1.
type MulticastTTLOption uint8