1 files changed, 58 insertions, 0 deletions
diff --git a/pflocal/connq.h b/pflocal/connq.h
new file mode 100644
index 00000000..8486eb17
--- /dev/null
+++ b/pflocal/connq.h
@@ -0,0 +1,58 @@
+/* Connection queues
+
+   Copyright (C) 1995 Free Software Foundation, Inc.
+
+   Written by Miles Bader <miles@gnu.ai.mit.edu>
+
+   This program is free software; you can redistribute it and/or
+   modify it under the terms of the GNU General Public License as
+   published by the Free Software Foundation; either version 2, or (at
+   your option) any later version.
+
+   This program is distributed in the hope that it will be useful, but
+   WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#ifndef __CONNQ_H__
+#define __CONNQ_H__
+
+#include <errno.h>
+
+/* Unknown types */
+struct connq;
+struct connq_request;
+struct sock;
+
+/* Create a new listening queue, returning it in CQ.  The resulting queue
+   will be of zero length, that is it won't allow connections unless someone
+   is already listening (change this with connq_set_length).  */
+error_t connq_create (struct connq **cq);
+
+/* Wait for a connection attempt to be made on CQ, and return the connecting
+   socket in SOCK, and a request tag in REQ.  If REQ is NULL, the request is
+   left in the queue, otherwise connq_request_complete must be called on REQ
+   to allow the requesting thread to continue.  If NOBLOCK is true,
+   EWOULDBLOCK is returned when there are no immediate connections
+   available.  CQ should be unlocked.  */
+error_t connq_listen (struct connq *cq, int noblock,
+		      struct connq_request **req, struct sock **sock);
+
+/* Return the error code ERR to the thread that made the listen request REQ,
+   returned from a previous connq_listen.  */
+void connq_request_complete (struct connq_request *req, error_t err);
+
+/* Set CQ's queue length to LENGTH.  Any sockets already waiting for a
+   connections that are past the new length will fail with ECONNREFUSED.  */
+error_t connq_set_length (struct connq *cq, int length);
+
+/* Try to connect SOCK with the socket listening on CQ.  If NOBLOCK is true,
+   then return EWOULDBLOCK immediately when there are no immediate
+   connections available. Neither SOCK nor CQ should be locked.  */
+error_t connq_connect (struct connq *cq, int noblock, struct sock *sock);
+
+#endif /* __CONNQ_H__ */