lwip: Add LwIP-based TCP/IP translator

* Makefile (prog-subdirs): Add lwip.
* config.make.in (HAVE_LIBLWIP, liblwip_CFLAGS, liblwip_LIBS): Define
variables.
* configure.ac: Check for liblwip.
* lwip/: New directory.

1 files changed, 68 insertions, 0 deletions

diff --git a/lwip/mig-decls.h b/lwip/mig-decls.h
new file mode 100644
index 00000000..907369ee
--- /dev/null
+++ b/lwip/mig-decls.h
@@ -0,0 +1,68 @@
+/*
+   Copyright (C) 1995,96,2000,2017 Free Software Foundation, Inc.
+   Written by Michael I. Bushnell, p/BSG.
+
+   This file is part of the GNU Hurd.
+
+   The GNU Hurd 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.
+
+   The GNU Hurd 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 the GNU Hurd.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef __LWIP_MIG_DECLS_H__
+#define __LWIP_MIG_DECLS_H__
+
+#include <lwip-hurd.h>
+
+/* MiG bogosity */
+typedef struct sock_user *sock_user_t;
+typedef struct sock_addr *sock_addr_t;
+
+static inline struct sock_user * __attribute__ ((unused))
+begin_using_socket_port (mach_port_t port)
+{
+  return ports_lookup_port (lwip_bucket, port, socketport_class);
+}
+
+static inline struct sock_user * __attribute__ ((unused))
+begin_using_socket_payload (unsigned long payload)
+{
+  return ports_lookup_payload (lwip_bucket, payload, socketport_class);
+}
+
+static inline void __attribute__ ((unused))
+end_using_socket_port (struct sock_user *user)
+{
+  if (user)
+    ports_port_deref (user);
+}
+
+static inline struct sock_addr * __attribute__ ((unused))
+begin_using_sockaddr_port (mach_port_t port)
+{
+  return ports_lookup_port (lwip_bucket, port, addrport_class);
+}
+
+static inline struct sock_addr * __attribute__ ((unused))
+begin_using_sockaddr_payload (unsigned long payload)
+{
+  return ports_lookup_payload (lwip_bucket, payload, addrport_class);
+}
+
+static inline void __attribute__ ((unused))
+end_using_sockaddr_port (struct sock_addr *addr)
+{
+  if (addr)
+    ports_port_deref (addr);
+}
+
+#endif /* __LWIP_MIG_DECLS_H__ */