pktdump: add icmpv6 print

Makefile.dep

@@ -273,6 +273,7 @@ endif
 ifneq (,$(filter gnrc_icmpv6,$(USEMODULE)))
   USEMODULE += inet_csum
   USEMODULE += gnrc_ipv6
+  USEMODULE += icmpv6
 endif
 
 ifneq (,$(filter gnrc_rpl_srh,$(USEMODULE)))

sys/Makefile

@@ -28,6 +28,9 @@ endif
 ifneq (,$(filter netdev2_test,$(USEMODULE)))
     DIRS += net/netdev2_test
 endif
+ifneq (,$(filter icmpv6,$(USEMODULE)))
+    DIRS += net/network_layer/icmpv6
+endif
 ifneq (,$(filter ipv4_addr,$(USEMODULE)))
     DIRS += net/network_layer/ipv4/addr
 endif

sys/include/net/icmpv6.h

@@ -217,6 +217,13 @@ typedef struct __attribute__((packed)) {
     network_uint16_t seq;   /**< Sequence number */
 } icmpv6_echo_t;
 
+/**
+ * @brief   Print the given ICMPv6 header to STDOUT
+ *
+ * @param[in] hdr           ICMPv6 header to print
+ */
+void icmpv6_hdr_print(icmpv6_hdr_t *hdr);
+
 #ifdef __cplusplus
 }
 #endif

sys/net/gnrc/pktdump/gnrc_pktdump.c

@@ -27,6 +27,7 @@
 #include "msg.h"
 #include "net/gnrc/pktdump.h"
 #include "net/gnrc.h"
+#include "net/icmpv6.h"
 #include "net/ipv6/addr.h"
 #include "net/ipv6/hdr.h"
 #include "net/udp.h"
@@ -71,6 +72,7 @@ static void _dump_snip(gnrc_pktsnip_t *pkt)
 #ifdef MODULE_GNRC_ICMPV6
         case GNRC_NETTYPE_ICMPV6:
             printf("NETTYPE_ICMPV6 (%i)\n", pkt->type);
+            icmpv6_hdr_print(pkt->data);
             break;
 #endif
 #ifdef MODULE_GNRC_TCP

sys/net/network_layer/icmpv6/Makefile

@@ -0,0 +1 @@
+include $(RIOTBASE)/Makefile.base

sys/net/network_layer/icmpv6/icmpv6_hdr_print.c

@@ -0,0 +1,27 @@
+/*
+ * Copyright (C) 2017 HAW Hamburg
+ *
+ * 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 smlng <s@mlng.net>
+ */
+
+#include <stdio.h>
+#include <inttypes.h>
+
+#include "net/icmpv6.h"
+
+void icmpv6_hdr_print(icmpv6_hdr_t *hdr)
+{
+    printf("   type: %3" PRIu8 "  code: %3" PRIu8 "\n", hdr->type, hdr->code);
+    printf("   cksum: 0x4%" PRIx16 "\n", byteorder_ntohs(hdr->csum));
+}
+/** @} */