From 2d2831e3541c8ae3c84f17cfd1bf0a26f2027044 Mon Sep 17 00:00:00 2001
From: Rahat Mahmood <rahat@google.com>
Date: Thu, 6 Jun 2019 15:03:44 -0700
Subject: Track and export socket state.

This is necessary for implementing network diagnostic interfaces like
/proc/net/{tcp,udp,unix} and sock_diag(7).

For pass-through endpoints such as hostinet, we obtain the socket
state from the backend. For netstack, we add explicit tracking of TCP
states.

PiperOrigin-RevId: 251934850
---
 pkg/tcpip/transport/raw/endpoint.go | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'pkg/tcpip/transport/raw')

diff --git a/pkg/tcpip/transport/raw/endpoint.go b/pkg/tcpip/transport/raw/endpoint.go
index 1daf5823f..e4ff50c91 100644
--- a/pkg/tcpip/transport/raw/endpoint.go
+++ b/pkg/tcpip/transport/raw/endpoint.go
@@ -519,3 +519,8 @@ func (ep *endpoint) HandlePacket(route *stack.Route, netHeader buffer.View, vv b
 		ep.waiterQueue.Notify(waiter.EventIn)
 	}
 }
+
+// State implements socket.Socket.State.
+func (ep *endpoint) State() uint32 {
+	return 0
+}
-- 
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