From 10c13bccaf5ec963b78f5e61629b4528ed9e9c6b Mon Sep 17 00:00:00 2001 From: Andrei Vagin Date: Fri, 7 Aug 2020 13:08:51 -0700 Subject: tcp: change the limit of TCP_LINGER2 It was changed in the Linux kernel: commit f0628c524fd188c3f9418e12478dfdfadacba815 Date: Fri Apr 24 16:06:16 2020 +0800 net: Replace the limit of TCP_LINGER2 with TCP_FIN_TIMEOUT_MAX PiperOrigin-RevId: 325493859 --- pkg/tcpip/transport/tcp/endpoint.go | 11 ++--------- pkg/tcpip/transport/tcp/protocol.go | 4 ++++ pkg/tcpip/transport/tcp/tcp_test.go | 2 +- 3 files changed, 7 insertions(+), 10 deletions(-) (limited to 'pkg/tcpip') diff --git a/pkg/tcpip/transport/tcp/endpoint.go b/pkg/tcpip/transport/tcp/endpoint.go index 39ea38fe6..b8b52b03d 100644 --- a/pkg/tcpip/transport/tcp/endpoint.go +++ b/pkg/tcpip/transport/tcp/endpoint.go @@ -1777,15 +1777,8 @@ func (e *endpoint) SetSockOpt(opt interface{}) *tcpip.Error { // Same as effectively disabling TCPLinger timeout. v = 0 } - var stkTCPLingerTimeout tcpip.TCPLingerTimeoutOption - if err := e.stack.TransportProtocolOption(header.TCPProtocolNumber, &stkTCPLingerTimeout); err != nil { - // We were unable to retrieve a stack config, just use - // the DefaultTCPLingerTimeout. - if v > tcpip.TCPLingerTimeoutOption(DefaultTCPLingerTimeout) { - stkTCPLingerTimeout = tcpip.TCPLingerTimeoutOption(DefaultTCPLingerTimeout) - } - } - // Cap it to the stack wide TCPLinger timeout. + // Cap it to MaxTCPLingerTimeout. + stkTCPLingerTimeout := tcpip.TCPLingerTimeoutOption(MaxTCPLingerTimeout) if v > stkTCPLingerTimeout { v = stkTCPLingerTimeout } diff --git a/pkg/tcpip/transport/tcp/protocol.go b/pkg/tcpip/transport/tcp/protocol.go index d9abb8d94..2e5093b36 100644 --- a/pkg/tcpip/transport/tcp/protocol.go +++ b/pkg/tcpip/transport/tcp/protocol.go @@ -62,6 +62,10 @@ const ( // FIN_WAIT_2 state before being marked closed. DefaultTCPLingerTimeout = 60 * time.Second + // MaxTCPLingerTimeout is the maximum amount of time that sockets + // linger in FIN_WAIT_2 state before being marked closed. + MaxTCPLingerTimeout = 120 * time.Second + // DefaultTCPTimeWaitTimeout is the amount of time that sockets linger // in TIME_WAIT state before being marked closed. DefaultTCPTimeWaitTimeout = 60 * time.Second diff --git a/pkg/tcpip/transport/tcp/tcp_test.go b/pkg/tcpip/transport/tcp/tcp_test.go index fb25b86b9..1b58eb91b 100644 --- a/pkg/tcpip/transport/tcp/tcp_test.go +++ b/pkg/tcpip/transport/tcp/tcp_test.go @@ -6112,7 +6112,7 @@ func TestTCPLingerTimeout(t *testing.T) { {"InRangeLingerTimeout", 10 * time.Second, 10 * time.Second}, // Values > stack's TCPLingerTimeout are capped to the stack's // value. Defaults to tcp.DefaultTCPLingerTimeout(60 seconds) - {"AboveMaxLingerTimeout", 65 * time.Second, 60 * time.Second}, + {"AboveMaxLingerTimeout", 125 * time.Second, 120 * time.Second}, } for _, tc := range testCases { t.Run(tc.name, func(t *testing.T) { -- cgit v1.2.3