ng_icmpv6_error: add preliminary header

sys/include/net/ng_icmpv6.h

@@ -34,6 +34,7 @@
 #include "net/ng_nettype.h"
 #include "net/ng_pkt.h"
 
+#include "net/ng_icmpv6/error.h"
 #include "net/ng_icmpv6/types.h"
 
 #ifdef __cplusplus

sys/include/net/ng_icmpv6/error.h

+/*
+ * Copyright (C) 2015 Martine Lenders <mlenders@inf.fu-berlin.de>
+ *
+ * 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.
+ */
+
+/**
+ * @defgroup    net_ng_icmpv6_error ICMPv6 error messages
+ * @ingroup     net_ng_icmpv6
+ * @brief       ICMPv6 error message handling and creation
+ * @{
+ *
+ * @file
+ * @brief   ICMPv6 error message definitions
+ *
+ * @author  Martine Lenders <mlenders@inf.fu-berlin.de>
+ */
+#ifndef NG_ICMPV6_ERROR_H_
+#define NG_ICMPV6_ERROR_H_
+
+#include <inttypes.h>
+
+#include "byteorder.h"
+#include "kernel_types.h"
+#include "net/ng_icmpv6/types.h"
+#include "net/ng_ipv6/hdr.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/**
+ * @{
+ * @name Codes for destination unreachable messages
+ *
+ * @see <a href="https://tools.ietf.org/html/rfc4443#section-3.1">
+ *          RFC 4443, section 3.1
+ *      </a>
+ */
+#define NG_ICMPV6_ERROR_DEST_UNR_NO_ROUTE   (0) /**< no route to destination */
+#define NG_ICMPV6_ERROR_DEST_UNR_PROHIB     (1) /**< communictation with
+                                                 *   destination administratively
+                                                 *   prohibited */
+#define NG_ICMPV6_ERROR_DEST_UNR_SCOPE      (2) /**< beyond scope of source address */
+#define NG_ICMPV6_ERROR_DEST_UNR_ADDR       (3) /**< address unreachable */
+#define NG_ICMPV6_ERROR_DEST_UNR_PORT       (4) /**< port unreachable */
+#define NG_ICMPV6_ERROR_DEST_UNR_POLICY     (5) /**< source address failed ingress/egress
+                                                 *   policy */
+#define NG_ICMPV6_ERROR_DEST_UNR_REJECT     (6) /**< reject route to destination */
+/**
+ * @}
+ */
+
+/**
+ * @{
+ * @name Codes for time exceeded messages
+ *
+ * @see <a href="https://tools.ietf.org/html/rfc4443#section-3.3">
+ *          RFC 4443, section 3.3
+ *      </a>
+ */
+#define NG_ICMPV6_ERROR_TIME_EXC_HL     (0) /**< hop limit exceeded in transit */
+#define NG_ICMPV6_ERROR_TIME_EXC_FRAG   (1) /**< fragment reassembly time exceeded */
+/**
+ * @}
+ */
+
+/**
+ * @{
+ * @name Codes for parameter problem messages
+ *
+ * @see <a href="https://tools.ietf.org/html/rfc4443#section-3.4">
+ *          RFC 4443, section 3.4
+ *      </a>
+ */
+#define NG_ICMPV6_ERROR_PARAM_PROB_HDR_FIELD    (0) /**< errorneous header field
+                                                     *   encountered */
+#define NG_ICMPV6_ERROR_PARAM_PROB_NH           (1) /**< unrecognized next header
+                                                     *   field encountered */
+#define NG_ICMPV6_ERROR_PARAM_PROB_OPT          (2) /**< unrecognized IPv6 option
+                                                     *   field encountered */
+/**
+ * @}
+ */
+
+/**
+ * @brief   Destination unreachable message format.
+ * @extends ng_icmpv6_hdr_t
+ *
+ * @see <a href="https://tools.ietf.org/html/rfc4443#section-3.1">
+ *          RFC 4443, section 3.1
+ *      </a>
+ */
+typedef struct __attribute__((packed)) {
+    uint8_t type;               /**< message type */
+    uint8_t code;               /**< message code */
+    network_uint16_t csum;      /**< checksum */
+    network_uint32_t unused;    /**< unused field */
+} ng_icmpv6_error_dst_unr_t;
+
+/**
+ * @brief   Packet too big message format.
+ * @extends ng_icmpv6_hdr_t
+ *
+ * @see <a href="https://tools.ietf.org/html/rfc4443#section-3.2">
+ *          RFC 4443, section 3.2
+ *      </a>
+ */
+typedef struct __attribute__((packed)) {
+    uint8_t type;           /**< message type */
+    uint8_t code;           /**< message code */
+    network_uint16_t csum;  /**< checksum */
+    network_uint32_t mtu;   /**< MTU */
+} ng_icmpv6_error_pkt_too_big_t;
+
+/**
+ * @brief   Time exceeded message format.
+ * @extends ng_icmpv6_hdr_t
+ *
+ * @see <a href="https://tools.ietf.org/html/rfc4443#section-3.3">
+ *          RFC 4443, section 3.3
+ *      </a>
+ */
+typedef struct __attribute__((packed)) {
+    uint8_t type;               /**< message type */
+    uint8_t code;               /**< message code */
+    network_uint16_t csum;      /**< checksum */
+    network_uint32_t unused;    /**< unused field */
+} ng_icmpv6_error_time_exc_t;
+
+/**
+ * @brief   Parameter problem message format.
+ * @extends ng_icmpv6_hdr_t
+ *
+ * @see <a href="https://tools.ietf.org/html/rfc4443#section-3.4">
+ *          RFC 4443, section 3.3
+ *      </a>
+ */
+typedef struct __attribute__((packed)) {
+    uint8_t type;           /**< message type */
+    uint8_t code;           /**< message code */
+    network_uint16_t csum;  /**< checksum */
+    network_uint32_t ptr;   /**< pointer */
+} ng_icmpv6_error_param_prob_t;
+
+/* TODO: implement build and handle functions */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* NG_ICMPV6_ERROR_H_ */
+/** @} */