From 0eae08bc9e77d54c415c9d59ac3e1fa1f35f0a18 Mon Sep 17 00:00:00 2001
From: Nayana Bidari <nybidari@google.com>
Date: Tue, 1 Sep 2020 09:52:52 -0700
Subject: Automated rollback of changelist 328350576

PiperOrigin-RevId: 329526153
---
 pkg/tcpip/transport/tcp/endpoint.go | 33 ---------------------------------
 1 file changed, 33 deletions(-)

(limited to 'pkg/tcpip/transport')

diff --git a/pkg/tcpip/transport/tcp/endpoint.go b/pkg/tcpip/transport/tcp/endpoint.go
index c5d9eba5d..3f18efeef 100644
--- a/pkg/tcpip/transport/tcp/endpoint.go
+++ b/pkg/tcpip/transport/tcp/endpoint.go
@@ -654,9 +654,6 @@ type endpoint struct {
 
 	// owner is used to get uid and gid of the packet.
 	owner tcpip.PacketOwner
-
-	// linger is used for SO_LINGER socket option.
-	linger tcpip.LingerOption
 }
 
 // UniqueID implements stack.TransportEndpoint.UniqueID.
@@ -1010,26 +1007,6 @@ func (e *endpoint) Close() {
 		return
 	}
 
-	if e.linger.Enabled && e.linger.Timeout == 0 {
-		s := e.EndpointState()
-		isResetState := s == StateEstablished || s == StateCloseWait || s == StateFinWait1 || s == StateFinWait2 || s == StateSynRecv
-		if isResetState {
-			// Close the endpoint without doing full shutdown and
-			// send a RST.
-			e.resetConnectionLocked(tcpip.ErrConnectionAborted)
-			e.closeNoShutdownLocked()
-
-			// Wake up worker to close the endpoint.
-			switch s {
-			case StateSynRecv:
-				e.notifyProtocolGoroutine(notifyClose)
-			default:
-				e.notifyProtocolGoroutine(notifyTickleWorker)
-			}
-			return
-		}
-	}
-
 	// Issue a shutdown so that the peer knows we won't send any more data
 	// if we're connected, or stop accepting if we're listening.
 	e.shutdownLocked(tcpip.ShutdownWrite | tcpip.ShutdownRead)
@@ -1830,11 +1807,6 @@ func (e *endpoint) SetSockOpt(opt tcpip.SettableSocketOption) *tcpip.Error {
 	case *tcpip.SocketDetachFilterOption:
 		return nil
 
-	case *tcpip.LingerOption:
-		e.LockUser()
-		e.linger = *v
-		e.UnlockUser()
-
 	default:
 		return nil
 	}
@@ -2057,11 +2029,6 @@ func (e *endpoint) GetSockOpt(opt tcpip.GettableSocketOption) *tcpip.Error {
 			Port: port,
 		}
 
-	case *tcpip.LingerOption:
-		e.LockUser()
-		*o = e.linger
-		e.UnlockUser()
-
 	default:
 		return tcpip.ErrUnknownProtocolOption
 	}
-- 
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