Merge pull request #3168 from haukepetersen/ng_add_udp_printhdr

net/ng_pktdump: added printing of UDP header details

sys/include/net/ng_udp.h

@@ -92,6 +92,13 @@ ng_pktsnip_t *ng_udp_hdr_build(ng_pktsnip_t *payload,
                                uint8_t *src, size_t src_len,
                                uint8_t *dst, size_t dst_len);
 
+/**
+ * @brief   Print the given UDP header to STDOUT
+ *
+ * @param[in] hdr           UDP header to print
+ */
+void ng_udp_hdr_print(ng_udp_hdr_t *hdr);
+
 /**
  * @brief   Initialize and start UDP
  *

sys/net/crosslayer/ng_pktdump/ng_pktdump.c

@@ -29,6 +29,7 @@
 #include "net/ng_netbase.h"
 #include "net/ng_ipv6/addr.h"
 #include "net/ng_ipv6/hdr.h"
+#include "net/ng_udp.h"
 #include "od.h"
 
 /**
@@ -78,6 +79,7 @@ static void _dump_snip(ng_pktsnip_t *pkt)
 #ifdef MODULE_NG_UDP
         case NG_NETTYPE_UDP:
             printf("NETTYPE_UDP (%i)\n", pkt->type);
+            ng_udp_hdr_print(pkt->data);
             break;
 #endif
 #ifdef TEST_SUITES

sys/net/transport_layer/ng_udp/ng_udp_hdr_print.c

@@ -0,0 +1,31 @@
+/*
+ * 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.
+ */
+
+/**
+ * @ingroup     net_pktdump
+ * @{
+ *
+ * @file
+ * @brief       Generic module to dump packages received via netapi to STDOUT
+ *
+ * @author      Hauke Petersen <hauke.petersen@fu-berlin.de>
+ *
+ * @}
+ */
+
+#include <stdio.h>
+
+#include "net/ng_udp.h"
+
+void ng_udp_hdr_print(ng_udp_hdr_t *hdr)
+{
+    printf("   src-port: %5" PRIu16 "  dst-port: %5" PRIu16 "\n",
+           byteorder_ntohs(hdr->src_port), byteorder_ntohs(hdr->dst_port));
+    printf("   length: %" PRIu16 "  cksum: 0x4%" PRIx16 "\n",
+           byteorder_ntohs(hdr->length), byteorder_ntohs(hdr->checksum));
+}