lwip: initial import of conn_udp wrapper

Makefile.dep

@@ -381,6 +381,10 @@ ifneq (,$(filter lwip_conn_ip,$(USEMODULE)))
   USEMODULE += lwip_raw
 endif
 
+ifneq (,$(filter lwip_conn_udp,$(USEMODULE)))
+  USEMODULE += lwip_udp
+endif
+
 ifneq (,$(filter lwip_%,$(USEMODULE)))
   USEMODULE += lwip
 endif

pkg/lwip/Makefile.include

@@ -7,6 +7,9 @@ endif
 ifneq (,$(filter lwip_conn_ip,$(USEMODULE)))
   DIRS += $(RIOTBASE)/pkg/lwip/contrib/conn/ip
 endif
+ifneq (,$(filter lwip_conn_udp,$(USEMODULE)))
+  DIRS += $(RIOTBASE)/pkg/lwip/contrib/conn/udp
+endif
 ifneq (,$(filter lwip_contrib,$(USEMODULE)))
   DIRS += $(RIOTBASE)/pkg/lwip/contrib
 endif

pkg/lwip/contrib/conn/udp/Makefile

@@ -0,0 +1,3 @@
+MODULE := lwip_conn_udp
+
+include $(RIOTBASE)/Makefile.base

pkg/lwip/contrib/conn/udp/lwip_conn_udp.c

@@ -0,0 +1,75 @@
+/*
+ * Copyright (C) 2015 Freie Universität Berlin
+ *
+ * This file is subject to the terms and conditions of the GNU Lesser
+ * General Public License v2.1. See the file LICENSE in the top level
+ * directory for more details.
+ */
+
+/**
+ * @{
+ *
+ * @file
+ * @author  Martine Lenders <mlenders@inf.fu-berlin.de>
+ */
+
+#include <assert.h>
+#include <errno.h>
+
+#include "net/ipv4/addr.h"
+#include "net/ipv6/addr.h"
+#include "net/conn/udp.h"
+
+#include "lwip/api.h"
+#include "lwip/conn.h"
+
+int conn_udp_create(conn_udp_t *conn, const void *addr, size_t addr_len, int family, uint16_t port)
+{
+    struct netconn *tmp;
+    int res;
+
+    res = lwip_conn_create(&tmp, addr, addr_len, family, NETCONN_UDP, 0, port);
+    if (res < 0) {
+        return res;
+    }
+    conn->lwip_conn = tmp;
+
+    return res;
+}
+
+void conn_udp_close(conn_udp_t *conn)
+{
+    assert(conn != NULL);
+    netconn_delete(conn->lwip_conn);
+}
+
+int conn_udp_getlocaladdr(conn_udp_t *conn, void *addr, uint16_t *port)
+{
+    assert(conn != NULL);
+    return lwip_conn_getlocaladdr(conn->lwip_conn, addr, port);
+}
+
+int conn_udp_recvfrom(conn_udp_t *conn, void *data, size_t max_len, void *addr, size_t *addr_len,
+                      uint16_t *port)
+{
+    assert(conn != NULL);
+    return lwip_conn_recvfrom(conn->lwip_conn, data, max_len, addr, addr_len, port);
+}
+
+int conn_udp_sendto(const void *data, size_t len, const void *src, size_t src_len,
+                    const void *dst, size_t dst_len, int family, uint16_t sport,
+                    uint16_t dport)
+{
+    struct netconn *tmp;
+    int res;
+
+    res = lwip_conn_create(&tmp, src, src_len, family, NETCONN_UDP, 0, sport);
+    if (res < 0) {
+        return res;
+    }
+    res = lwip_conn_sendto(tmp, data, len, dst, dst_len, dport);
+    netconn_delete(tmp);
+    return res;
+}
+
+/** @} */

sys/include/net/conn/udp.h

@@ -27,6 +27,10 @@
 #include "net/gnrc/conn.h"
 #endif
 
+#ifdef MODULE_LWIP_CONN_UDP
+#include "lwip/conn.h"
+#endif
+
 #ifdef __cplusplus
 extern "C" {
 #endif