From 326a40214844b331a66a10227128e5d3ea9332cc Mon Sep 17 00:00:00 2001
From: Martine Lenders <mlenders@inf.fu-berlin.de>
Date: Fri, 20 Mar 2015 19:21:44 +0100
Subject: [PATCH] ng_netapi: introduce ng_netapi_receive()

---
 sys/include/net/ng_netapi.h              | 11 +++++++++++
 sys/net/crosslayer/ng_netapi/ng_netapi.c | 16 +++++++++++++---
 2 files changed, 24 insertions(+), 3 deletions(-)

diff --git a/sys/include/net/ng_netapi.h b/sys/include/net/ng_netapi.h
index 2bd01938e2..3116a8e702 100644
--- a/sys/include/net/ng_netapi.h
+++ b/sys/include/net/ng_netapi.h
@@ -83,6 +83,17 @@ typedef struct {
  */
 int ng_netapi_send(kernel_pid_t pid, ng_pktsnip_t *pkt);
 
+/**
+ * @brief   Shortcut function for sending @ref NG_NETAPI_MSG_TYPE_RCV messages
+ *
+ * @param[in] pid       PID of the targeted network module
+ * @param[in] pkt       pointer into the packet buffer holding the received data
+ *
+ * @return              1 if packet was successfully delivered
+ * @return              -1 on error (invalid PID or no space in queue)
+ */
+int ng_netapi_receive(kernel_pid_t pid, ng_pktsnip_t *pkt);
+
 /**
  * @brief   Shortcut function for sending @ref NG_NETAPI_MSG_TYPE_GET messages and
  *          parsing the returned @ref NG_NETAPI_MSG_TYPE_ACK message
diff --git a/sys/net/crosslayer/ng_netapi/ng_netapi.c b/sys/net/crosslayer/ng_netapi/ng_netapi.c
index df5eb60724..97894dd563 100644
--- a/sys/net/crosslayer/ng_netapi/ng_netapi.c
+++ b/sys/net/crosslayer/ng_netapi/ng_netapi.c
@@ -54,16 +54,26 @@ static inline int _get_set(kernel_pid_t pid, uint16_t type,
     return (int)ack.content.value;
 }
 
-int ng_netapi_send(kernel_pid_t pid, ng_pktsnip_t *pkt)
+static inline int _snd_rcv(kernel_pid_t pid, uint16_t type, ng_pktsnip_t *pkt)
 {
     msg_t msg;
     /* set the outgoing message's fields */
-    msg.type = NG_NETAPI_MSG_TYPE_SND;
+    msg.type = type;
     msg.content.ptr = (void *)pkt;
-    /* send data using netapi */
+    /* send message */
     return msg_send(&msg, pid);
 }
 
+int ng_netapi_send(kernel_pid_t pid, ng_pktsnip_t *pkt)
+{
+    return _snd_rcv(pid, NG_NETAPI_MSG_TYPE_SND, pkt);
+}
+
+int ng_netapi_receive(kernel_pid_t pid, ng_pktsnip_t *pkt)
+{
+    return _snd_rcv(pid, NG_NETAPI_MSG_TYPE_RCV, pkt);
+}
+
 int ng_netapi_get(kernel_pid_t pid, ng_netconf_opt_t opt, uint16_t context,
                   void *data, size_t data_len)
 {