From: Tomas Hruby <tom@minix3.org>
Date: Sun, 14 Oct 2012 20:18:12 +0000 (+0000)
Subject: LWIP - fixed TCP panic when shutting down
X-Git-Tag: v3.3.0~1067
X-Git-Url: http://zhaoyanbai.com/repos/%22http:/www.isc.org/icons/zlib_tech.html?a=commitdiff_plain;h=f6b5201f641d3c4af0478bcd4fb14aebd3448f8d;p=minix.git

LWIP - fixed TCP panic when shutting down

- listening sockets do not handle some callbacks
---

diff --git a/servers/lwip/tcp.c b/servers/lwip/tcp.c
index 077b964df..086484f0a 100644
--- a/servers/lwip/tcp.c
+++ b/servers/lwip/tcp.c
@@ -156,10 +156,12 @@ static void tcp_op_close(struct socket * sock, __unused message * m)
 		int err;
 
 		/* we are not able to handle any callback anymore */
-		tcp_arg((struct tcp_pcb *)sock->pcb, NULL);
-		tcp_err((struct tcp_pcb *)sock->pcb, NULL);
-		tcp_sent((struct tcp_pcb *)sock->pcb, NULL);
-		tcp_recv((struct tcp_pcb *)sock->pcb, NULL);
+		if (((struct tcp_pcb *)sock->pcb)->state != LISTEN) {
+			tcp_arg((struct tcp_pcb *)sock->pcb, NULL);
+			tcp_err((struct tcp_pcb *)sock->pcb, NULL);
+			tcp_sent((struct tcp_pcb *)sock->pcb, NULL);
+			tcp_recv((struct tcp_pcb *)sock->pcb, NULL);
+		}
 
 		err = tcp_close(sock->pcb);
 		assert(err == ERR_OK);