From aee2c93366f451b9cc0a62430185749556fc3900 Mon Sep 17 00:00:00 2001 From: Jianfeng Tan Date: Thu, 29 Aug 2019 16:23:11 +0000 Subject: netstack: add counters for tcp CurrEstab and EstabResets Signed-off-by: Jianfeng Tan --- pkg/tcpip/tcpip.go | 14 ++++++++++++++ 1 file changed, 14 insertions(+) (limited to 'pkg/tcpip/tcpip.go') diff --git a/pkg/tcpip/tcpip.go b/pkg/tcpip/tcpip.go index 9d3752032..26f338d8d 100644 --- a/pkg/tcpip/tcpip.go +++ b/pkg/tcpip/tcpip.go @@ -673,6 +673,11 @@ func (s *StatCounter) Increment() { s.IncrementBy(1) } +// Decrement minuses one to the counter. +func (s *StatCounter) Decrement() { + s.IncrementBy(^uint64(0)) +} + // Value returns the current value of the counter. func (s *StatCounter) Value() uint64 { return atomic.LoadUint64(&s.count) @@ -881,6 +886,15 @@ type TCPStats struct { // successfully via Listen. PassiveConnectionOpenings *StatCounter + // CurrentEstablished is the number of TCP connections for which the + // current state is either ESTABLISHED or CLOSE-WAIT. + CurrentEstablished *StatCounter + + // EstablishedResets is the number of times TCP connections have made + // a direct transition to the CLOSED state from either the + // ESTABLISHED state or the CLOSE-WAIT state. + EstablishedResets *StatCounter + // ListenOverflowSynDrop is the number of times the listen queue overflowed // and a SYN was dropped. ListenOverflowSynDrop *StatCounter -- cgit v1.2.3