Index: sctp.h
===================================================================
RCS file: /data/cvs/src/sys/netinet/sctp.h,v
retrieving revision 1.4
diff -u -r1.4 sctp.h
--- sctp.h	22 Apr 2007 12:12:38 -0000	1.4
+++ sctp.h	2 May 2007 04:44:54 -0000
@@ -400,6 +400,7 @@
 #define SCTP_PCB_FLAGS_BOUNDALL		0x00000004
 #define SCTP_PCB_FLAGS_ACCEPTING	0x00000008
 #define SCTP_PCB_FLAGS_UNBOUND		0x00000010
+#define SCTP_PCB_FLAGS_LISTENING	0x00000020
 #define SCTP_PCB_FLAGS_CLOSE_IP         0x00040000
 #define SCTP_PCB_FLAGS_WAS_CONNECTED    0x00080000
 #define SCTP_PCB_FLAGS_WAS_ABORTED      0x00100000
Index: sctp_pcb.c
===================================================================
RCS file: /data/cvs/src/sys/netinet/sctp_pcb.c,v
retrieving revision 1.21
diff -u -r1.21 sctp_pcb.c
--- sctp_pcb.c	22 Apr 2007 11:06:27 -0000	1.21
+++ sctp_pcb.c	2 May 2007 04:44:54 -0000
@@ -1611,6 +1611,20 @@
 	return (stcb);
 }
 
+/*
+ * be careful deadlock when you call this function.
+ */
+void
+sctp_inpcb_set_flags(struct sctp_inpcb *inp, int flags)
+{
+	SCTP_INP_INFO_WLOCK();
+	SCTP_INP_WLOCK(inp);
+
+	inp->sctp_flags |= flags;
+
+	SCTP_INP_WUNLOCK(inp);
+	SCTP_INP_INFO_WUNLOCK();
+}
 
 /*
  * allocate a sctp_inpcb and setup a temporary binding to a port/all
Index: sctp_pcb.h
===================================================================
RCS file: /data/cvs/src/sys/netinet/sctp_pcb.h,v
retrieving revision 1.12
diff -u -r1.12 sctp_pcb.h
--- sctp_pcb.h	22 Apr 2007 12:12:38 -0000	1.12
+++ sctp_pcb.h	2 May 2007 04:44:54 -0000
@@ -453,6 +453,8 @@
 sctp_findassociation_ep_asconf(struct mbuf *, int, int,
     struct sctphdr *, struct sctp_inpcb **, struct sctp_nets **);
 
+void sctp_inpcb_set_flags(struct sctp_inpcb *, int);
+
 int sctp_inpcb_alloc(struct socket *);
 
 int sctp_is_address_on_local_host(struct sockaddr *addr, uint32_t vrf_id);
Index: sctp_usrreq.c
===================================================================
RCS file: /data/cvs/src/sys/netinet/sctp_usrreq.c,v
retrieving revision 1.19
diff -u -r1.19 sctp_usrreq.c
--- sctp_usrreq.c	22 Apr 2007 11:06:27 -0000	1.19
+++ sctp_usrreq.c	2 May 2007 04:44:54 -0000
@@ -3672,6 +3672,9 @@
 	} else {
 		SCTP_INP_RUNLOCK(inp);
 	}
+
+	sctp_inpcb_set_flags(inp, SCTP_PCB_FLAGS_LISTENING);
+
 	/* It appears for 7.0 and on, we must always call this. */
 	solisten_proto(so, backlog);