From 0b80c7ed173d642b7fab9b3926dc70a92bf89539 Mon Sep 17 00:00:00 2001
From: Martine Lenders <m.lenders@fu-berlin.de>
Date: Tue, 16 May 2017 13:23:54 +0200
Subject: [PATCH] gnrc_netif2: Introduction of a new GNRC network interface API
---
sys/include/net/gnrc/netif2.h | 322 +++++
sys/include/net/gnrc/netif2/6lo.h | 45 +
sys/include/net/gnrc/netif2/conf.h | 125 ++
sys/include/net/gnrc/netif2/ethernet.h | 49 +
sys/include/net/gnrc/netif2/flags.h | 144 +++
sys/include/net/gnrc/netif2/internal.h | 401 +++++++
sys/include/net/gnrc/netif2/ipv6.h | 253 ++++
sys/include/net/gnrc/netif2/mac.h | 58 +
sys/include/net/netopt.h | 61 +
sys/net/crosslayer/netopt/netopt.c | 9 +
sys/net/gnrc/Makefile | 3 +
sys/net/gnrc/netif2/Makefile | 3 +
sys/net/gnrc/netif2/gnrc_netif2.c | 1265 ++++++++++++++++++++
sys/net/gnrc/netif2/gnrc_netif2_ethernet.c | 253 ++++
14 files changed, 2991 insertions(+)
create mode 100644 sys/include/net/gnrc/netif2.h
create mode 100644 sys/include/net/gnrc/netif2/6lo.h
create mode 100644 sys/include/net/gnrc/netif2/conf.h
create mode 100644 sys/include/net/gnrc/netif2/ethernet.h
create mode 100644 sys/include/net/gnrc/netif2/flags.h
create mode 100644 sys/include/net/gnrc/netif2/internal.h
create mode 100644 sys/include/net/gnrc/netif2/ipv6.h
create mode 100644 sys/include/net/gnrc/netif2/mac.h
create mode 100644 sys/net/gnrc/netif2/Makefile
create mode 100644 sys/net/gnrc/netif2/gnrc_netif2.c
create mode 100644 sys/net/gnrc/netif2/gnrc_netif2_ethernet.c
diff --git a/sys/include/net/gnrc/netif2.h b/sys/include/net/gnrc/netif2.h
new file mode 100644
index 0000000000..517e91c66a
--- /dev/null
+++ b/sys/include/net/gnrc/netif2.h
@@ -0,0 +1,322 @@
+/*
+ * Copyright (C) 2017 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.
+ */
+
+/**
+ * @defgroup net_gnrc_netif2 New network interface API
+ * @ingroup net_gnrc
+ * @brief Abstraction layer for GNRC's network interfaces
+ *
+ * Network interfaces in the context of GNRC are threads for protocols that are
+ * below the network layer.
+ *
+ * @{
+ *
+ * @file
+ * @brief Definition for GNRC's network interfaces
+ *
+ * @author Martine Lenders <mlenders@inf.fu-berlin.de>
+ */
+#ifndef NET_GNRC_NETIF2_H
+#define NET_GNRC_NETIF2_H
+
+#include <stddef.h>
+#include <stdint.h>
+#include <stdbool.h>
+
+#include "kernel_types.h"
+#include "msg.h"
+#include "net/gnrc/netapi.h"
+#include "net/gnrc/pkt.h"
+#include "net/gnrc/netif2/conf.h"
+#ifdef MODULE_GNRC_SIXLOWPAN
+#include "net/gnrc/netif2/6lo.h"
+#endif
+#include "net/gnrc/netif2/flags.h"
+#ifdef MODULE_GNRC_IPV6
+#include "net/gnrc/netif2/ipv6.h"
+#endif
+#ifdef MODULE_GNRC_MAC
+#include "net/gnrc/netif2/mac.h"
+#endif
+#include "net/netdev.h"
+#include "rmutex.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @brief Operations to an interface
+ */
+typedef struct gnrc_netif2_ops gnrc_netif2_ops_t;
+
+/**
+ * @brief Representation of a network interface
+ */
+typedef struct {
+ const gnrc_netif2_ops_t *ops; /**< Operations of the network interface */
+ netdev_t *dev; /**< Network device of the network interface */
+ rmutex_t mutex; /**< Mutex of the interface */
+#if defined(MODULE_GNRC_IPV6) || DOXYGEN
+ gnrc_netif2_ipv6_t ipv6; /**< IPv6 component */
+#endif
+#if defined(MODULE_GNRC_MAC) || DOXYGEN
+ gnrc_netif2_mac_t mac; /**< @ref net_gnrc_mac component */
+#endif /* MODULE_GNRC_MAC */
+ /**
+ * @brief Flags for the interface
+ *
+ * @see net_gnrc_netif2_flags
+ */
+ uint32_t flags;
+#if (GNRC_NETIF2_L2ADDR_MAXLEN > 0)
+ /**
+ * @brief The link-layer address currently used as the source address
+ * on this interface.
+ *
+ * @note Only available if @ref GNRC_NETIF2_L2ADDR_MAXLEN > 0
+ */
+ uint8_t l2addr[GNRC_NETIF2_L2ADDR_MAXLEN];
+
+ /**
+ * @brief Length in bytes of gnrc_netif2_t::l2addr
+ *
+ * @note Only available if @ref GNRC_NETIF2_L2ADDR_MAXLEN > 0
+ */
+ uint8_t l2addr_len;
+#endif
+#if defined(MODULE_GNRC_SIXLOWPAN) || DOXYGEN
+ gnrc_netif2_6lo_t sixlo; /**< 6Lo component */
+#endif
+ uint8_t cur_hl; /**< Current hop-limit for out-going packets */
+ uint8_t device_type; /**< Device type */
+ kernel_pid_t pid; /**< PID of the network interface's thread */
+} gnrc_netif2_t;
+
+/**
+ * @see gnrc_netif2_ops_t
+ */
+struct gnrc_netif2_ops {
+ /**
+ * @brief Initializes network interface beyond the default settings
+ *
+ * @pre `netif != NULL`
+ *
+ * @param[in] netif The network interface.
+ *
+ * This is called after the default settings were set, right before the
+ * interface's thread starts receiving messages. It is not necessary to lock
+ * the interface's mutex gnrc_netif_t::mutex, since the thread will already
+ * lock it. Leave NULL if you do not need any special initialization.
+ */
+ void (*init)(gnrc_netif2_t *netif);
+
+ /**
+ * @brief Send a @ref net_gnrc_pkt "packet" over the network interface
+ *
+ * @pre `netif != NULL && pkt != NULL`
+ *
+ * @note The function re-formats the content of @p pkt to a format expected
+ * by the netdev_driver_t::send() method of gnrc_netif_t::dev and
+ * releases the packet before returning (so no additional release
+ * should be required after calling this method).
+ *
+ * @param[in] netif The network interface.
+ * @param[in] pkt A packet to send.
+ *
+ * @return The number of bytes actually sent on success
+ * @return -EBADMSG, if the @ref net_gnrc_netif_hdr in @p pkt is missing
+ * or is in an unexpected format.
+ * @return -ENOTSUP, if sending @p pkt in the given format isn't supported
+ * (e.g. empty payload with Ethernet).
+ * @return Any negative error code reported by gnrc_netif2_t::dev.
+ */
+ int (*send)(gnrc_netif2_t *netif, gnrc_pktsnip_t *pkt);
+
+ /**
+ * @brief Receives a @ref net_gnrc_pkt "packet" from the network interface
+ *
+ * @pre `netif != NULL`
+ *
+ * @note The function takes the bytes received via netdev_driver_t::recv()
+ * from gnrc_netif_t::dev and re-formats it to a
+ * @ref net_gnrc_pkt "packet" containing a @ref net_gnrc_netif_hdr
+ * and a payload header in receive order.
+ *
+ * @param[in] netif The network interface.
+ *
+ * @return The packet received. Contains the payload (with the type marked
+ * accordingly) and a @ref net_gnrc_netif_hdr in receive order.
+ * @return NULL, if @ref net_gnrc_pktbuf was full.
+ */
+ gnrc_pktsnip_t *(*recv)(gnrc_netif2_t *netif);
+
+ /**
+ * @brief Gets an option from the network interface
+ *
+ * Use gnrc_netif2_get_from_netdev() to just get options from
+ * gnrc_netif2_t::dev.
+ *
+ * @param[in] netif The network interface.
+ * @param[in] opt The option parameters.
+ *
+ * @return Number of bytes in @p data.
+ * @return -EOVERFLOW, if @p max_len is lesser than the required space.
+ * @return -ENOTSUP, if @p opt is not supported to be set.
+ * @return Any negative error code reported by gnrc_netif2_t::dev.
+ */
+ int (*get)(gnrc_netif2_t *netif, gnrc_netapi_opt_t *opt);
+
+ /**
+ * @brief Sets an option from the network interface
+ *
+ * Use gnrc_netif2_set_from_netdev() to just set options from
+ * gnrc_netif2_t::dev.
+ *
+ * @param[in] netif The network interface.
+ * @param[in] opt The option parameters.
+ *
+ * @return Number of bytes written to gnrc_netif2_t::dev.
+ * @return -EOVERFLOW, if @p data_len is greater than the allotted space in
+ * gnrc_netif2_t::dev or gnrc_netif_t.
+ * @return -ENOTSUP, if @p opt is not supported to be set.
+ * @return Any negative error code reported by gnrc_netif2_t::dev.
+ */
+ int (*set)(gnrc_netif2_t *netif, const gnrc_netapi_opt_t *opt);
+
+ /**
+ * @brief Message handler for network interface
+ *
+ * This message handler is used, when the network interface needs to handle
+ * message types beyond the ones defined in @ref net_gnrc_netapi "netapi".
+ * Leave NULL if this is not the case.
+ *
+ * @param[in] netif The network interface.
+ * @param[in] msg Message to be handled.
+ */
+ void (*msg_handler)(gnrc_netif2_t *netif, msg_t *msg);
+};
+
+/**
+ * @brief Creates a network interface
+ *
+ * @param[in] stack The stack for the network interface's thread.
+ * @param[in] stacksize Size of @p stack.
+ * @param[in] priority Priority for the network interface's thread.
+ * @param[in] name Name for the network interface. May be NULL.
+ * @param[in] dev Device for the interface.
+ * @param[in] ops Operations for the network interface.
+ *
+ * @note If @ref DEVELHELP is defined netif_params_t::name is used as the
+ * name of the network interface's thread.
+ *
+ * @return The network interface on success.
+ * @return NULL, on error.
+ */
+gnrc_netif2_t *gnrc_netif2_create(char *stack, int stacksize, char priority,
+ const char *name, netdev_t *dev,
+ const gnrc_netif2_ops_t *ops);
+
+/**
+ * @brief Get number of network interfaces actually allocated
+ *
+ * @return Number of network interfaces actually allocated
+ */
+unsigned gnrc_netif2_numof(void);
+
+/**
+ * @brief Iterate over all network interfaces.
+ *
+ * @param[in] prev previous interface in iteration. NULL to start iteration.
+ *
+ * @return The next network interface after @p prev.
+ * @return NULL, if @p prev was the last network interface.
+ */
+gnrc_netif2_t *gnrc_netif2_iter(const gnrc_netif2_t *prev);
+
+/**
+ * @brief Get network interface by PID
+ *
+ * @param[in] pid A PID of a network interface.
+ *
+ * @return The network interface on success.
+ * @return NULL, if no network interface with PID exists.
+ */
+gnrc_netif2_t *gnrc_netif2_get_by_pid(kernel_pid_t pid);
+
+/**
+ * @brief Default operation for gnrc_netif2_ops_t::get()
+ *
+ * @note Can also be used to be called *after* a custom operation.
+ *
+ * @param[in] netif The network interface.
+ * @param[out] opt The option parameters.
+ *
+ * @return Return value of netdev_driver_t::get() of gnrc_netif2_t::dev of
+ * @p netif.
+ */
+int gnrc_netif2_get_from_netdev(gnrc_netif2_t *netif, gnrc_netapi_opt_t *opt);
+
+/**
+ * @brief Default operation for gnrc_netif2_ops_t::set()
+ *
+ * @note Can also be used to be called *after* a custom operation.
+ *
+ * @param[in] netif The network interface.
+ * @param[in] opt The option parameters.
+ *
+ * @return Return value of netdev_driver_t::set() of gnrc_netif2_t::dev of
+ * @p netif.
+ */
+int gnrc_netif2_set_from_netdev(gnrc_netif2_t *netif,
+ const gnrc_netapi_opt_t *opt);
+
+/**
+ * @brief Converts a hardware address to a human readable string.
+ *
+ * @details The format will be like `xx:xx:xx:xx` where `xx` are the bytes
+ * of @p addr in hexadecimal representation.
+ *
+ * @pre `(out != NULL) && ((addr != NULL) || (addr_len == 0))`
+ * @pre @p out **MUST** have allocated at least 3 * @p addr_len bytes.
+ *
+ * @param[in] addr A hardware address.
+ * @param[in] addr_len Length of @p addr.
+ * @param[out] out A string to store the output in. Must at least have
+ * 3 * @p addr_len bytes allocated.
+ *
+ * @return @p out.
+ */
+char *gnrc_netif2_addr_to_str(const uint8_t *addr, size_t addr_len, char *out);
+
+/**
+ * @brief Parses a string of colon-separated hexadecimals to a hardware
+ * address.
+ *
+ * @details The input format must be like `xx:xx:xx:xx` where `xx` will be the
+ * bytes of @p addr in hexadecimal representation.
+ *
+ * @pre `(out != NULL)`
+ * @pre @p out **MUST** have allocated at least
+ * @ref GNRC_NETIF2_L2ADDR_MAXLEN bytes.
+ *
+ * @param[in] str A string of colon-separated hexadecimals.
+ * @param[out] out The resulting hardware address. Must at least have
+ * @ref GNRC_NETIF2_L2ADDR_MAXLEN bytes allocated.
+ *
+ * @return Actual length of @p out on success.
+ * @return 0, on failure.
+ */
+size_t gnrc_netif2_addr_from_str(const char *str, uint8_t *out);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* NET_GNRC_NETIF2_H */
+/** @} */
diff --git a/sys/include/net/gnrc/netif2/6lo.h b/sys/include/net/gnrc/netif2/6lo.h
new file mode 100644
index 0000000000..7a9415e017
--- /dev/null
+++ b/sys/include/net/gnrc/netif2/6lo.h
@@ -0,0 +1,45 @@
+/*
+ * Copyright (C) 2017 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_gnrc_netif2
+ * @{
+ *
+ * @file
+ * @brief 6LoWPAN definitions for @ref net_gnrc_netif2
+ *
+ * @author Martine Lenders <m.lenders@fu-berlin.de>
+ */
+#ifndef NET_GNRC_NETIF2_6LO_H
+#define NET_GNRC_NETIF2_6LO_H
+
+#include <stdint.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @brief 6Lo component of @ref gnrc_netif2_t
+ */
+typedef struct {
+ /**
+ * @brief Maximum fragment size for 6Lo fragmentation.
+ *
+ * @note Only available with module
+ * @ref net_gnrc_sixlowpan_frag "gnrc_sixlowpan_frag".
+ */
+ uint8_t max_frag_size;
+} gnrc_netif2_6lo_t;
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* NET_GNRC_NETIF2_6LO_H */
+/** @} */
diff --git a/sys/include/net/gnrc/netif2/conf.h b/sys/include/net/gnrc/netif2/conf.h
new file mode 100644
index 0000000000..80544f7169
--- /dev/null
+++ b/sys/include/net/gnrc/netif2/conf.h
@@ -0,0 +1,125 @@
+/*
+ * Copyright (C) 2017 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_gnrc_netif2
+ * @{
+ *
+ * @file
+ * @brief Configuration macros for @ref net_gnrc_netif2
+ *
+ * @author Martine Lenders <mlenders@inf.fu-berlin.de>
+ */
+#ifndef NET_GNRC_NETIF2_CONF_H
+#define NET_GNRC_NETIF2_CONF_H
+
+#include "net/ieee802154.h"
+#include "net/ethernet/hdr.h"
+#include "thread.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @brief Maximum number of network interfaces
+ *
+ * @note Intentionally not calling it `GNRC_NETIF2_NUMOF` to not require
+ * rewrites throughout the stack.
+ */
+#ifndef GNRC_NETIF_NUMOF
+#define GNRC_NETIF_NUMOF (1)
+#endif
+
+/**
+ * @brief Default priority for network interface threads
+ */
+#ifndef GNRC_NETIF2_PRIO
+#define GNRC_NETIF2_PRIO (THREAD_PRIORITY_MAIN - 5)
+#endif
+
+/**
+ * @brief Number of multicast addresses needed for @ref net_gnrc_rpl "RPL".
+ *
+ * @note Used for calculation of @ref GNRC_NETIF2_IPV6_GROUPS_NUMOF
+ */
+#ifdef MODULE_GNRC_RPL
+#define GNRC_NETIF2_RPL_ADDR (1)
+#else
+#define GNRC_NETIF2_RPL_ADDR (0)
+#endif
+
+/**
+ * @brief Number of multicast addresses needed for a @ref net_gnrc_ipv6 "IPv6"
+ * router
+ *
+ * @note Used for calculation of @ref GNRC_NETIF2_IPV6_GROUPS_NUMOF
+ */
+#ifdef MODULE_GNRC_IPV6_ROUTER
+#define GNRC_NETIF2_IPV6_RTR_ADDR (1)
+#else
+#define GNRC_NETIF2_IPV6_RTR_ADDR (0)
+#endif
+
+/**
+ * @brief Maximum number of unicast and anycast addresses per interface
+ *
+ * Default: 2 (link-local + corresponding global address)
+ */
+#ifndef GNRC_NETIF2_IPV6_ADDRS_NUMOF
+#define GNRC_NETIF2_IPV6_ADDRS_NUMOF (2)
+#endif
+
+/**
+ * @brief Maximum number of multicast groups per interface
+ *
+ * Default: 2 (all-nodes + solicited-nodes of link-local and global unicast
+ * address) + @ref GNRC_NETIF2_RPL_ADDR + @ref GNRC_NETIF2_IPV6_RTR_ADDR
+ */
+#ifndef GNRC_NETIF2_IPV6_GROUPS_NUMOF
+#define GNRC_NETIF2_IPV6_GROUPS_NUMOF (2 + GNRC_NETIF2_RPL_ADDR + GNRC_NETIF2_IPV6_RTR_ADDR)
+#endif
+
+/**
+ * @brief Maximum length of the link-layer address.
+ *
+ * The value for the maximum length of a link-layer address is dependent
+ * on the @ref drivers_netdev_api "netdev" adapters compiled in:
+ * - Setting it via `CFLAGS` has the most precedence.
+ * - The default is 8.
+ * - 1, if only @ref drivers_cc110x devices are compiled in.
+ * - @ref ETHERNET_ADDR_LEN, if additionally (or only) ethernet devices are
+ * compiled in.
+ * - @ref IEEE802154_LONG_ADDRESS_LEN, if additionally (or only) IEEE802.15.4
+ * devices are compiled in.
+ *
+ * @note Implementers note: From longest to shortest extend, if new link-layer
+ * address types are included
+ */
+#ifndef GNRC_NETIF2_L2ADDR_MAXLEN
+#if defined(MODULE_NETDEV_IEEE802154) || defined(MODULE_XBEE)
+#define GNRC_NETIF2_L2ADDR_MAXLEN (IEEE802154_LONG_ADDRESS_LEN)
+#elif MODULE_NETDEV_ETH
+#define GNRC_NETIF2_L2ADDR_MAXLEN (ETHERNET_ADDR_LEN)
+#elif MODULE_CC110X
+#define GNRC_NETIF2_L2ADDR_MAXLEN (1U)
+#else
+#define GNRC_NETIF2_L2ADDR_MAXLEN (8U)
+#endif
+#endif
+
+#ifndef GNRC_NETIF2_DEFAULT_HL
+#define GNRC_NETIF2_DEFAULT_HL (64U) /**< default hop limit */
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* NET_GNRC_NETIF2_CONF_H */
+/** @} */
diff --git a/sys/include/net/gnrc/netif2/ethernet.h b/sys/include/net/gnrc/netif2/ethernet.h
new file mode 100644
index 0000000000..c39f5d6745
--- /dev/null
+++ b/sys/include/net/gnrc/netif2/ethernet.h
@@ -0,0 +1,49 @@
+/*
+ * Copyright (C) 2017 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_gnrc_netif2
+ * @{
+ *
+ * @file
+ * @brief Ethernet adaption for @ref net_gnrc_netif2
+ *
+ * @author Martine Lenders <mlenders@inf.fu-berlin.de>
+ */
+#ifndef NET_GNRC_NETIF2_ETHERNET_H
+#define NET_GNRC_NETIF2_ETHERNET_H
+
+#include "net/gnrc/netif2.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @brief Creates an Ethernet network interface
+ *
+ * @param[in] stack The stack for the network interface's thread.
+ * @param[in] stacksize Size of @p stack.
+ * @param[in] priority Priority for the network interface's thread.
+ * @param[in] name Name for the network interface. May be NULL.
+ * @param[in] dev Device for the interface.
+ *
+ * @see @ref gnrc_netif2_create()
+ *
+ * @return The network interface on success.
+ * @return NULL, on error.
+ */
+gnrc_netif2_t *gnrc_netif2_ethernet_create(char *stack, int stacksize, char priority,
+ char *name, netdev_t *dev);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* NET_GNRC_NETIF2_ETHERNET_H */
+/** @} */
diff --git a/sys/include/net/gnrc/netif2/flags.h b/sys/include/net/gnrc/netif2/flags.h
new file mode 100644
index 0000000000..dbbbd40b70
--- /dev/null
+++ b/sys/include/net/gnrc/netif2/flags.h
@@ -0,0 +1,144 @@
+/*
+ * Copyright (C) 2017 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_gnrc_netif2
+ * @{
+ *
+ * @file
+ * @brief Flag definitions for @ref net_gnrc_netif2
+ *
+ * @author Martine Lenders <m.lenders@fu-berlin.de>
+ */
+#ifndef NET_GNRC_NETIF2_FLAGS_H
+#define NET_GNRC_NETIF2_FLAGS_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @brief Auto-address configuration modes
+ * @anchor net_gnrc_netif2_aac
+ */
+enum {
+ GNRC_NETIF2_AAC_NONE = 0, /**< no configuration */
+ GNRC_NETIF2_AAC_AUTO, /**< Use some automatic bootstrapping (e.g. SLAAC with IPv6) */
+ GNRC_NETIF2_AAC_DHCP, /**< Use DHCP(v6) */
+ /* extend if needed */
+};
+
+/**
+ * @name Network interface flags
+ * @anchor net_gnrc_netif2_flags
+ * @{
+ */
+/**
+ * @brief Network interface has link-layer address
+ *
+ * There are link-layers (e.g. SLIP) that do not have (nor require) link-layer
+ * addresses. This flag signifies this fact to upper layers by leaving it unset.
+ */
+#define GNRC_NETIF2_FLAGS_HAS_L2ADDR (0x00000001U)
+
+/**
+ * @brief Network interface is enabled for IPv6 forwarding
+ */
+#define GNRC_NETIF2_FLAGS_IPV6_FORWARDING (0x00000002U)
+
+/**
+ * @brief Network interface advertises itself as an IPv6 router
+ * (implies @ref GNRC_NETIF2_FLAGS_IPV6_FORWARDING to be set)
+ */
+#define GNRC_NETIF2_FLAGS_IPV6_RTR_ADV (0x00000004U)
+
+/**
+ * @brief This interface advertises its gnrc_netif2_t::mtu to other nodes
+ * (implies @ref GNRC_NETIF2_FLAGS_IPV6_RTR_ADV to be set)
+ */
+#define GNRC_NETIF2_FLAGS_IPV6_ADV_MTU (0x00000008U)
+
+/**
+ * @brief This interface advertises its gnrc_netif2_t::cur_hl to other nodes
+ * (implies @ref GNRC_NETIF2_FLAGS_IPV6_RTR_ADV to be set)
+ */
+#define GNRC_NETIF2_FLAGS_IPV6_ADV_CUR_HL (0x00000010U)
+
+/**
+ * @brief This interface advertises its reachable time to other nodes
+ * (implies @ref GNRC_NETIF2_FLAGS_IPV6_RTR_ADV to be set)
+ */
+#define GNRC_NETIF2_FLAGS_IPV6_ADV_REACH_TIME (0x00000020U)
+
+/**
+ * @brief This interface advertises its retransmission timer to other nodes
+ * (implies @ref GNRC_NETIF2_FLAGS_IPV6_RTR_ADV to be set)
+ */
+#define GNRC_NETIF2_FLAGS_IPV6_ADV_RETRANS_TIMER (0x00000040U)
+
+/**
+ * @brief If gnrc_netif2_t::ipv6::aac_mode == GNRC_NETIF2_AAC_DHCP then this
+ * flag indicates that other configuration information is available via
+ * DHCPv6 (e.g. DNS-related information)
+ *
+ * @see [RFC 4861, section 4.2](https://tools.ietf.org/html/rfc4861#section-4.2)
+ */
+#define GNRC_NETIF2_FLAGS_IPV6_ADV_O_FLAG (0x00000080U)
+
+/**
+ * @brief This interface uses 6Lo header compression
+ *
+ * @see [RFC 6282](https://tools.ietf.org/html/rfc6282)
+ */
+#define GNRC_NETIF2_FLAGS_6LO_HC (0x00000100U)
+
+/**
+ * @brief This interface acts as a 6Lo border router to the LLN
+ */
+#define GNRC_NETIF2_FLAGS_6LO_ABR (0x00000200U)
+
+/**
+ * @brief This interface acts as a mesh-under node (route-over topology when
+ * unset)
+ */
+#define GNRC_NETIF2_FLAGS_6LO_MESH (0x00000400U)
+
+/**
+ * @brief Interface supports 6LoWPAN general header compression
+ *
+ * @attention 6CIO (which propagates this flag throughout) not implemented yet
+ * @see [RFC 7400, section 3.3](https://tools.ietf.org/html/rfc7400#section-3.3)
+ * @see [draft-ietf-6lo-rfc6775-update-09, section 6.3]
+ * (https://tools.ietf.org/html/draft-ietf-6lo-rfc6775-update-09#section-6.3)
+ */
+#define GNRC_NETIF2_FLAGS_6LO_BACKBONE (0x00000800U)
+
+/**
+ * @brief Marks if the addresses of the interface were already registered
+ * to an interface or not
+ */
+#define GNRC_NETIF2_FLAGS_6LO_ADDRS_REG (0x00001000U)
+
+/**
+ * @brief Mask for @ref gnrc_mac_tx_feedback_t
+ */
+#define GNRC_NETIF2_FLAGS_MAC_TX_FEEDBACK_MASK (0x00006000U)
+
+/**
+ * @brief Flag to track if a transmission might have corrupted a received
+ * packet
+ */
+#define GNRC_NETIF2_FLAGS_MAC_RX_STARTED (0x00008000U)
+/** @} */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* NET_GNRC_NETIF2_FLAGS_H */
+/** @} */
diff --git a/sys/include/net/gnrc/netif2/internal.h b/sys/include/net/gnrc/netif2/internal.h
new file mode 100644
index 0000000000..494d70e0e0
--- /dev/null
+++ b/sys/include/net/gnrc/netif2/internal.h
@@ -0,0 +1,401 @@
+/*
+ * Copyright (C) 2017 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.
+ */
+
+/**
+ * @addtogroup net_gnrc_netif
+ * @internal
+ * @attention **FOR GNRC-INTERNAL USE ONLY. PLEASE USE @ref net_gnrc_netapi
+ * "NETAPI" (WITH THE INTERFACE'S PID) FOR EXTERNAL MANIPULATION**
+ * @{
+ *
+ * @file
+ * @brief GNRC-internal network interface definitions
+ *
+ * @author Martine Lenders <m.lenders@fu-berlin.de>
+ */
+#ifndef NET_GNRC_NETIF2_INTERNAL_H
+#define NET_GNRC_NETIF2_INTERNAL_H
+
+#include "net/gnrc/netif2.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @brief Message type for @ref netdev_event_t "netdev events"
+ */
+#define NETDEV_MSG_TYPE_EVENT (0x1234)
+
+/**
+ * @brief Acquires exclusive access to the interface
+ *
+ * @param[in] netif the network interface
+ *
+ * @internal
+ */
+static inline void gnrc_netif2_acquire(gnrc_netif2_t *netif)
+{
+ if (netif && (netif->ops)) {
+ rmutex_lock(&netif->mutex);
+ }
+}
+
+/**
+ * @brief Releases exclusive access to the interface
+ *
+ * @param[in] netif the network interface
+ *
+ * @internal
+ */
+static inline void gnrc_netif2_release(gnrc_netif2_t *netif)
+{
+ if (netif && (netif->ops)) {
+ rmutex_unlock(&netif->mutex);
+ }
+}
+
+#if defined(MODULE_GNRC_IPV6) || DOXYGEN
+/**
+ * @brief Adds an IPv6 address to the interface
+ *
+ * @pre `(netif != NULL) && (addr != NULL)`
+ * @pre @p addr is not multicast (starts with `ff00::/8`), unspecified (`::`),
+ * or loopback
+ * @pre `(pfx_len > 0) && (pfx_len <= 128)`
+ *
+ * @param[in,out] netif the network interface. May not be NULL.
+ * @param[in] addr the address to add. If the address is already on the
+ * interface the function will return 0, but @p flags
+ * will be ignored. May not be NULL and may not be
+ * link-local or multicast
+ * @param[in] pfx_len length in bits of the prefix of @p addr
+ * @param[in] flags initial flags for the address.
+ * - Setting the address' state to
+ * @ref GNRC_NETIF2_IPV6_ADDRS_FLAGS_STATE_TENTATIVE
+ * means that this address is assumed to be added due to
+ * stateless auto-address configuration and actions
+ * related to that may be performed in the background.
+ * - Setting the address' state to
+ * @ref GNRC_NETIF2_IPV6_ADDRS_FLAGS_STATE_VALID means
+ * that the address is assumed to be manually configured
+ * and its prefix will be added to the node's prefix
+ * list (valid and preferred lifetime will be set to
+ * infinite, but can be changed using
+ * @ref gnrc_ipv6_nib_pl_set()).
+ *
+ *
+ * @note Only available with @ref net_gnrc_ipv6 "gnrc_ipv6".
+ *
+ * @return >= 0, on success
+ * @return -ENOMEM, when no space for new addresses is left on the interface
+ */
+int gnrc_netif2_ipv6_addr_add(gnrc_netif2_t *netif, const ipv6_addr_t *addr,
+ unsigned pfx_len, uint8_t flags);
+
+/**
+ * @brief Removes an IPv6 address from the interface
+ *
+ * @pre `(netif != NULL) && (addr != NULL)`
+ *
+ * @param[in,out] netif the network interface
+ * @param[in] addr the address to remove
+ *
+ * @note Only available with @ref net_gnrc_ipv6 "gnrc_ipv6".
+ */
+void gnrc_netif2_ipv6_addr_remove(gnrc_netif2_t *netif,
+ const ipv6_addr_t *addr);
+
+
+/**
+ * @brief Returns the index of @p addr in gnrc_netif2_t::ipv6_addrs of @p
+ * netif
+ *
+ * @pre `(netif != NULL) && (addr != NULL)`
+ *
+ * Can be used to check if an address is assigned to an interface.
+ *
+ * @param[in] netif the network interface
+ * @param[in] addr the address to check
+ *
+ * @note Only available with @ref net_gnrc_ipv6 "gnrc_ipv6".
+ *
+ * @return index of @p addr in gnrc_netif2_t::ipv6_addrs of @p netif
+ * @return -1, if @p addr isn't assigned to @p netif
+ */
+int gnrc_netif2_ipv6_addr_idx(gnrc_netif2_t *netif,
+ const ipv6_addr_t *addr);
+
+/**
+ * @brief Gets state from address flags
+ *
+ * @param[in] netif the network interface
+ * @param[in] idx index of the address flags
+ *
+ * @return the state of the address at @p idx
+ */
+static inline uint8_t gnrc_netif2_ipv6_addr_get_state(const gnrc_netif2_t *netif,
+ int idx)
+{
+ return netif->ipv6.addrs_flags[idx] & GNRC_NETIF2_IPV6_ADDRS_FLAGS_STATE_MASK;
+}
+
+/**
+ * @brief Gets number of duplicate address detection transmissions already
+ * performed for an address
+ *
+ * @param[in] netif the network interface
+ * @param[in] idx index of the address (and its flags)
+ *
+ * @return the number of duplicate address detection transmissions already
+ * performed
+ */
+static inline uint8_t gnrc_netif2_ipv6_addr_dad_trans(const gnrc_netif2_t *netif,
+ int idx)
+{
+ return netif->ipv6.addrs_flags[idx] & GNRC_NETIF2_IPV6_ADDRS_FLAGS_STATE_TENTATIVE;
+}
+
+/**
+ * @brief Returns the index of an address in gnrc_netif2_t::ipv6_addrs of @p
+ * netif that matches @p addr best
+ *
+ * @pre `(netif != NULL) && (addr != NULL)`
+ *
+ * Can be used to check if a prefix is assigned to an interface.
+ *
+ * @param[in] netif the network interface
+ * @param[in] addr the prefix to match
+ *
+ *
+ * @note Only available with @ref net_gnrc_ipv6 "gnrc_ipv6".
+ *
+ * @return index of an address in gnrc_netif2_t::ipv6_addrs of @p netif that
+ * best matches @p addr.
+ * @return -1, if no address on @p netif matches @p addr
+ */
+int gnrc_netif2_ipv6_addr_match(gnrc_netif2_t *netif,
+ const ipv6_addr_t *addr);
+
+/**
+ * @brief Searches for the best address on an interface usable as a source
+ * address for a given destination address.
+ *
+ * @pre `(netif != NULL) && (dst != NULL)`
+ *
+ * @param[in] netif the network interface
+ * @param[in] dst the destination address you want to find a source for.
+ * @param[in] ll_only only link local addresses qualify
+ *
+ * @see [RFC 6724](https://tools.ietf.org/html/rfc6724)
+ *
+ * @note Only available with @ref net_gnrc_ipv6 "gnrc_ipv6".
+ *
+ * @todo Rule 4 from RFC 6724 is currently not implemented. Has to updated as
+ * soon as gnrc supports Mobile IP.
+ *
+ * @todo Rule 6 from RFC 6724 is currently not implemented. Has to updated as
+ * soon as gnrc supports flow labels.
+ *
+ * @todo Rule 7 from RFC 6724 is currently not implemented. Has to updated as
+ * soon as gnrc supports temporary addresses.
+ *
+ * @return The best source address for a packet addressed to @p dst
+ * @return NULL, if no matching address can be found on the interface.
+ */
+ipv6_addr_t *gnrc_netif2_ipv6_addr_best_src(gnrc_netif2_t *netif,
+ const ipv6_addr_t *dst,
+ bool ll_only);
+
+/**
+ * @brief Gets an interface by an address (incl. multicast groups) assigned
+ * to it.
+ *
+ * @pre `addr != NULL`
+ *
+ * @param[in] addr an IPv6 address
+ *
+ * @return The network interface that has @p addr assigned
+ * @return NULL, if no interface has @p addr assigned
+ */
+gnrc_netif2_t *gnrc_netif2_get_by_ipv6_addr(const ipv6_addr_t *addr);
+
+/**
+ * @brief Gets an interface by an address matching a given prefix best
+ *
+ * @param[in] prefix an IPv6 address or prefix
+ *
+ * @return The network interface that has an address assigned, that matches
+ * @p prefix best
+ * @return NULL, if there is no address on any interface that matches @prefix
+ */
+gnrc_netif2_t *gnrc_netif2_get_by_prefix(const ipv6_addr_t *prefix);
+
+/**
+ * @brief Joins interface to an IPv6 multicast group
+ *
+ * @pre `(netif != NULL) && (addr != NULL)`
+ * @pre @p addr is a multicast address (starts with `ff00::/8`)
+ *
+ * @param[in,out] netif the network interface
+ * @param[in] addr the address of the multicast group
+ *
+ * @note Only available with @ref net_gnrc_ipv6 "gnrc_ipv6".
+ *
+ * @return 0, on success
+ * @return -ENOMEM, when no space for new addresses is left on the interface
+ */
+int gnrc_netif2_ipv6_group_join(gnrc_netif2_t *netif,
+ const ipv6_addr_t *addr);
+
+/**
+ * @brief Let interface leave from an IPv6 multicast group
+ *
+ * @pre `(netif != NULL) && (addr != NULL)`
+ *
+ * @param[in,out] netif the network interface
+ * @param[in] addr the address of the multicast group
+ *
+ * @note Only available with @ref net_gnrc_ipv6 "gnrc_ipv6".
+ */
+void gnrc_netif2_ipv6_group_leave(gnrc_netif2_t *netif,
+ const ipv6_addr_t *addr);
+
+/**
+ * @brief Returns the index of @p addr in gnrc_netif2_t::ipv6_groups of @p
+ * netif
+ *
+ * @pre `(netif != NULL) && (addr != NULL)`
+ *
+ * Can be used to check if a multicast address is assigned to an interface.
+ *
+ * @param[in] netif the network interface
+ * @param[in] addr the multicast address to check
+ *
+ * @note Only available with @ref net_gnrc_ipv6 "gnrc_ipv6".
+ *
+ * @return index of @p addr in gnrc_netif2_t::ipv6_groups of @p netif
+ * @return -1, if @p netif is not in group @p addr
+ */
+int gnrc_netif2_ipv6_group_idx(gnrc_netif2_t *netif,
+ const ipv6_addr_t *addr);
+
+/**
+ * @brief Gets interface identifier (IID) of an interface's link-layer address
+ *
+ * @param[in] netif the network interface
+ * @param[out] eui64 the IID
+ *
+ * @return 0, on success
+ * @return -ENOTSUP, if interface has no link-layer address or if
+ * gnrc_netif2_t::device_type is not supported.
+ */
+int gnrc_netif2_ipv6_get_iid(gnrc_netif2_t *netif, eui64_t *eui64);
+#endif /* MODULE_GNRC_IPV6 */
+
+/**
+ * @brief Checks if the interface represents a router according to RFC 4861
+ *
+ * @attention Requires prior locking
+ *
+ * @param[in] netif the network interface
+ *
+ * @see [RFC 4861, section 2.1](https://tools.ietf.org/html/rfc4861#section-2.1)
+ *
+ * @return true, if the interface represents a router
+ * @return false, if the interface does not represent a router
+ */
+static inline bool gnrc_netif2_is_rtr(const gnrc_netif2_t *netif)
+{
+ return (netif->flags & GNRC_NETIF2_FLAGS_IPV6_FORWARDING);
+}
+
+/**
+ * @brief Checks if the interface is allowed to send out router advertisements
+ *
+ * @attention Requires prior locking
+ *
+ * @param[in] netif the network interface
+ *
+ * @return true, if the interface is allowed to send out router advertisements
+ * @return false, if the interface is not allowed to send out router
+ * advertisements
+ */
+static inline bool gnrc_netif2_is_rtr_adv(const gnrc_netif2_t *netif)
+{
+ return (netif->flags & GNRC_NETIF2_FLAGS_IPV6_RTR_ADV);
+}
+
+/**
+ * @brief Checks if the interface represents a 6Lo node (6LN) according to
+ * RFC 6775
+ *
+ * @attention Requires prior locking
+ *
+ * @param[in] netif the network interface
+ *
+ * @see [RFC 6775, section 2](https://tools.ietf.org/html/rfc6775#section-2)
+ *
+ * @return true, if the interface represents a 6LN
+ * @return false, if the interface does not represent a 6LN
+ */
+static inline bool gnrc_netif2_is_6ln(const gnrc_netif2_t *netif)
+{
+ switch (netif->device_type) {
+ case NETDEV_TYPE_IEEE802154:
+ case NETDEV_TYPE_CC110X:
+ case NETDEV_TYPE_NRFMIN:
+ return true;
+ default:
+ return false;
+ }
+}
+
+/**
+ * @brief Checks if the interface represents a 6Lo router (6LR) according to
+ * RFC 6775
+ *
+ * @attention Requires prior locking
+ *
+ * @param[in] netif the network interface
+ *
+ * @see [RFC 6775, section 2](https://tools.ietf.org/html/rfc6775#section-2)
+ *
+ * @return true, if the interface represents a 6LR
+ * @return false, if the interface does not represent a 6LR
+ */
+static inline bool gnrc_netif2_is_6lr(const gnrc_netif2_t *netif)
+{
+ return gnrc_netif2_is_rtr(netif) && gnrc_netif2_is_6ln(netif);
+}
+
+/**
+ * @brief Checks if the interface represents a 6Lo border router (6LBR)
+ * according to RFC 6775
+ *
+ * @attention Requires prior locking
+ *
+ * @param[in] netif the network interface
+ *
+ * @see [RFC 6775, section 2](https://tools.ietf.org/html/rfc6775#section-2)
+ *
+ * @return true, if the interface represents a 6LBR
+ * @return false, if the interface does not represent a 6LBR
+ */
+static inline bool gnrc_netif2_is_6lbr(const gnrc_netif2_t *netif)
+{
+ return (netif->flags & GNRC_NETIF2_FLAGS_6LO_ABR) &&
+ gnrc_netif2_is_6lr(netif);
+}
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* NET_GNRC_NETIF2_INTERNAL_H */
+/** @} */
diff --git a/sys/include/net/gnrc/netif2/ipv6.h b/sys/include/net/gnrc/netif2/ipv6.h
new file mode 100644
index 0000000000..ba9b9811dc
--- /dev/null
+++ b/sys/include/net/gnrc/netif2/ipv6.h
@@ -0,0 +1,253 @@
+/*
+ * Copyright (C) 2017 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_gnrc_netif2
+ * @{
+ *
+ * @file
+ * @brief IPv6 defintions for @ref net_gnrc_netif2
+ *
+ * @author Martine Lenders <mlenders@inf.fu-berlin.de>
+ */
+#ifndef NET_GNRC_NETIF2_IPV6_H
+#define NET_GNRC_NETIF2_IPV6_H
+
+#include "evtimer_msg.h"
+#include "net/ipv6/addr.h"
+#ifdef MODULE_GNRC_IPV6_NIB
+#include "net/gnrc/ipv6/nib/conf.h"
+#endif
+#include "net/gnrc/netif2/conf.h"
+#ifdef MODULE_NETSTATS_IPV6
+#include "net/netstats.h"
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @name IPv6 unicast and anycast address flags
+ * @anchor net_gnrc_netif2_ipv6_addrs_flags
+ * @{
+ */
+/**
+ * @brief Mask for the address' state
+ */
+#define GNRC_NETIF2_IPV6_ADDRS_FLAGS_STATE_MASK (0x1fU)
+
+/**
+ * @brief Tentative states (with encoded DAD retransmissions)
+ *
+ * The retransmissions of DAD transmits can be decoded from this state by
+ * applying it as a mask to the [flags](gnrc_netif2_ipv6_t::addrs_flags) of the
+ * address.
+ */
+#define GNRC_NETIF2_IPV6_ADDRS_FLAGS_STATE_TENTATIVE (0x07U)
+
+/**
+ * @brief Deprecated address state (still valid, but not preferred)
+ */
+#define GNRC_NETIF2_IPV6_ADDRS_FLAGS_STATE_DEPRECATED (0x08U)
+
+/**
+ * @brief Valid address state
+ */
+#define GNRC_NETIF2_IPV6_ADDRS_FLAGS_STATE_VALID (0x10U)
+
+/**
+ * @brief Address is an anycast address
+ */
+#define GNRC_NETIF2_IPV6_ADDRS_FLAGS_ANYCAST (0x20U)
+/** @} */
+
+/**
+ * @brief IPv6 component for @ref gnrc_netif2_t
+ *
+ * @note only available with @ref net_gnrc_ipv6.
+ */
+typedef struct {
+ /**
+ * @brief Flags for gnrc_netif2_t::ipv6_addrs
+ *
+ * @see net_gnrc_netif2_ipv6_addrs_flags
+ *
+ * @note Only available with module @ref net_gnrc_ipv6 "gnrc_ipv6".
+ */
+ uint8_t addrs_flags[GNRC_NETIF2_IPV6_ADDRS_NUMOF];
+
+ /**
+ * @brief IPv6 unicast and anycast addresses of the interface
+ *
+ * @note Only available with module @ref net_gnrc_ipv6 "gnrc_ipv6".
+ */
+ ipv6_addr_t addrs[GNRC_NETIF2_IPV6_ADDRS_NUMOF];
+
+ /**
+ * @brief IPv6 multicast groups of the interface
+ *
+ * @note Only available with module @ref net_gnrc_ipv6 "gnrc_ipv6".
+ */
+ ipv6_addr_t groups[GNRC_NETIF2_IPV6_GROUPS_NUMOF];
+#ifdef MODULE_NETSTATS_IPV6
+ /**
+ * @brief IPv6 packet statistics
+ *
+ * @note Only available with module `netstats_ipv6`.
+ */
+ netstats_t stats;
+#endif
+#if defined(MODULE_GNRC_IPV6_NIB) || DOXYGEN
+#if GNRC_IPV6_NIB_CONF_ROUTER || DOXYGEN
+ /**
+ * @brief Route info callback
+ *
+ * This callback is called by the @ref net_gnrc_ipv6_nib "NIB" to inform
+ * the routing protocol about state changes, route usages, missing routes
+ * etc.
+ *
+ * The callback may be `NULL` if no such behavior is required by the routing
+ * protocol (or no routing protocol is present).
+ *
+ * @todo Define types (RRQ, RRN, NSC) in NIB
+ *
+ * @param[in] type Type of the route info.
+ * @param[in] ctx_addr Context address of the route info.
+ * @param[in] ctx Further context of the route info.
+ */
+ void (*route_info_cb)(unsigned type, const ipv6_addr_t *ctx_addr,
+ const void *ctx);
+ /**
+ * @brief Event for @ref GNRC_IPV6_NIB_SND_MC_RA
+ *
+ * @note Only available with module @ref net_gnrc_ipv6 "gnrc_ipv6".
+ * and @ref net_gnrc_ipv6_nib "NIB" and if
+ * @ref GNRC_IPV6_NIB_CONF_ROUTER != 0
+ */
+ evtimer_msg_event_t snd_mc_ra;
+#endif /* GNRC_IPV6_NIB_CONF_ROUTER */
+#if GNRC_IPV6_NIB_CONF_ARSM || DOXYGEN
+ /**
+ * @brief Event for @ref GNRC_IPV6_NIB_RECALC_REACH_TIME
+ *
+ * @note Only available with module @ref net_gnrc_ipv6 "gnrc_ipv6".
+ * and @ref net_gnrc_ipv6_nib "NIB" and if
+ * @ref GNRC_IPV6_NIB_CONF_ARSM != 0
+ */
+ evtimer_msg_event_t recalc_reach_time;
+#endif /* GNRC_IPV6_NIB_CONF_ARSM */
+ /**
+ * @brief Event for @ref GNRC_IPV6_NIB_SEARCH_RTR
+ *
+ * @note Only available with module @ref net_gnrc_ipv6 "gnrc_ipv6".
+ * and @ref net_gnrc_ipv6_nib "NIB"
+ */
+ evtimer_msg_event_t search_rtr;
+
+#if GNRC_IPV6_NIB_CONF_ROUTER || DOXYGEN
+ /**
+ * @brief Timestamp in milliseconds of last unsolicited router
+ * advertisement
+ *
+ * @note Only available with module @ref net_gnrc_ipv6 "gnrc_ipv6".
+ * and @ref net_gnrc_ipv6_nib "NIB" and if
+ * @ref GNRC_IPV6_NIB_CONF_ROUTER != 0
+ */
+ uint32_t last_ra;
+#endif /* GNRC_IPV6_NIB_CONF_ROUTER */
+#if GNRC_IPV6_NIB_CONF_ARSM || defined(DOXYGEN)
+ /**
+ * @brief Base for random reachable time calculation and advertised
+ * reachable time in ms (if @ref GNRC_NETIF2_FLAGS_IPV6_RTR_ADV is
+ * set)
+ *
+ * @note Only available with module @ref net_gnrc_ipv6 "gnrc_ipv6".
+ * and @ref net_gnrc_ipv6_nib "NIB" and if
+ * @ref GNRC_IPV6_NIB_CONF_ARSM != 0
+ */
+ uint32_t reach_time_base;
+
+ /**
+ * @brief Reachable time (in ms)
+ *
+ * @note Only available with module @ref net_gnrc_ipv6 "gnrc_ipv6".
+ * and @ref net_gnrc_ipv6_nib "NIB" and if
+ * @ref GNRC_IPV6_NIB_CONF_ARSM != 0
+ */
+ uint32_t reach_time;
+#endif /* GNRC_IPV6_NIB_CONF_ARSM */
+ /**
+ * @brief Retransmission time and advertised retransmission time (in ms)
+ *
+ * @note Only available with module @ref net_gnrc_ipv6 "gnrc_ipv6" and
+ * @ref net_gnrc_ipv6_nib "NIB"
+ */
+ uint32_t retrans_time;
+#if GNRC_IPV6_NIB_CONF_ROUTER || DOXYGEN
+ /**
+ * @brief (Advertised) Router lifetime (default 1800).
+ *
+ * @note Only available with module @ref net_gnrc_ipv6 "gnrc_ipv6".
+ * and @ref net_gnrc_ipv6_nib "NIB" and if
+ * @ref GNRC_IPV6_NIB_CONF_ROUTER != 0
+ */
+ uint16_t rtr_ltime;
+ /**
+ * @brief number of unsolicited router advertisements sent
+ *
+ * This only counts up to the first @ref NDP_MAX_INIT_RA_NUMOF on interface
+ * initialization. The last @ref NDP_MAX_FIN_RA_NUMOF of an advertising
+ * interface are counted from UINT8_MAX - @ref NDP_MAX_FIN_RA_NUMOF + 1.
+ *
+ * @note Only available with module @ref net_gnrc_ipv6 "gnrc_ipv6".
+ * and @ref net_gnrc_ipv6_nib "NIB" and if
+ * @ref GNRC_IPV6_NIB_CONF_ROUTER != 0
+ */
+ uint8_t ra_sent;
+#endif
+#if GNRC_IPV6_NIB_CONF_6LN || DOXYGEN
+ /**
+ * @brief number of unsolicited router solicitations scheduled
+ *
+ * @note Only available with module @ref net_gnrc_ipv6 "gnrc_ipv6" and
+ * @ref net_gnrc_ipv6_nib "NIB" and if
+ * @ref GNRC_IPV6_NIB_CONF_6LN != 0
+ */
+ uint8_t rs_sent;
+#endif
+ /**
+ * @brief number of unsolicited neighbor advertisements scheduled
+ *
+ * @note Only available with module @ref net_gnrc_ipv6 "gnrc_ipv6" and
+ * @ref net_gnrc_ipv6_nib "NIB"
+ */
+ uint8_t na_sent;
+#endif /* MODULE_GNRC_IPV6_NIB */
+
+ /**
+ * @brief IPv6 auto-address configuration mode
+ *
+ * @note Only available with module @ref net_gnrc_ipv6 "gnrc_ipv6"
+ */
+ uint8_t aac_mode;
+
+ /**
+ * @brief Maximum transmission unit (MTU) for IPv6 packets
+ *
+ * @note Only available with module @ref net_gnrc_ipv6 "gnrc_ipv6".
+ */
+ uint16_t mtu;
+} gnrc_netif2_ipv6_t;
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* NET_GNRC_NETIF2_IPV6_H */
+/** @} */
diff --git a/sys/include/net/gnrc/netif2/mac.h b/sys/include/net/gnrc/netif2/mac.h
new file mode 100644
index 0000000000..8aed068f3f
--- /dev/null
+++ b/sys/include/net/gnrc/netif2/mac.h
@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2017 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_gnrc_netif2
+ * @{
+ *
+ * @file
+ * @brief @ref net_gnrc_mac definitions for @ref net_gnrc_netif2
+ *
+ * @author Martine Lenders <mlenders@inf.fu-berlin.de>
+ */
+#ifndef NET_GNRC_NETIF2_MAC_H
+#define NET_GNRC_NETIF2_MAC_H
+
+#include "net/gnrc/mac/types.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @brief @ref net_gnrc_mac component of @ref gnrc_netif2_mac_t
+ */
+typedef struct {
+#if ((GNRC_MAC_RX_QUEUE_SIZE != 0) || (GNRC_MAC_DISPATCH_BUFFER_SIZE != 0)) || DOXYGEN
+ /**
+ * @brief MAC internal object which stores reception parameters, queues, and
+ * state machines.
+ *
+ * @note Only available if @ref GNRC_MAC_RX_QUEUE_SIZE or
+ * @ref GNRC_MAC_DISPATCH_BUFFER_SIZE is greater than 0.
+ */
+ gnrc_mac_rx_t rx;
+#endif /* ((GNRC_MAC_RX_QUEUE_SIZE != 0) || (GNRC_MAC_DISPATCH_BUFFER_SIZE != 0)) || DOXYGEN */
+#if ((GNRC_MAC_TX_QUEUE_SIZE != 0) || (GNRC_MAC_NEIGHBOR_COUNT != 0)) || DOXYGEN
+ /**
+ * @brief MAC internal object which stores transmission parameters, queues, and
+ * state machines.
+ *
+ * @note Only available if @ref GNRC_MAC_TX_QUEUE_SIZE or
+ * @ref GNRC_MAC_NEIGHBOR_COUNT is greater than 0.
+ */
+ gnrc_mac_tx_t tx;
+#endif /* ((GNRC_MAC_TX_QUEUE_SIZE != 0) || (GNRC_MAC_NEIGHBOR_COUNT == 0)) || DOXYGEN */
+} gnrc_netif2_mac_t;
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* NET_GNRC_NETIF2_MAC_H */
+/** @} */
diff --git a/sys/include/net/netopt.h b/sys/include/net/netopt.h
index 55d9c3ef81..7d688c08c4 100644
--- a/sys/include/net/netopt.h
+++ b/sys/include/net/netopt.h
@@ -58,6 +58,11 @@ typedef enum {
*/
NETOPT_NID,
+ /**
+ * @brief get/set hop limit as uint8_t
+ */
+ NETOPT_HOP_LIMIT,
+
/**
* @brief get the IPv6 interface identifier of a network interface as
* eui64_t.
@@ -73,6 +78,58 @@ typedef enum {
* <a href="https://tools.ietf.org/html/rfc4944">RFC 4944</a>).
*/
NETOPT_IPV6_IID,
+
+ /**
+ * @brief get IPv6 addresses of an interface as array of @ref ipv6_addr_t
+ * or add an IPv6 address as @ref ipv6_addr_t to an interface
+ *
+ * When adding an IPv6 address to a GNRC interface using
+ * @ref GNRC_NETAPI_MSG_TYPE_SET, the gnrc_netapi_opt_t::context field can
+ * be used to pass the prefix length (8 MSB) and some flags (8 LSB)
+ * according to @ref net_gnrc_netif2_ipv6_addrs_flags. The address is however always
+ * considered to be manually added.
+ * When getting the option you can pass an array of @ref ipv6_addr_t of any
+ * length greater than 0 to the getter. The array will be filled up to to
+ * its maximum and the remaining addresses on the interface will be ignored
+ */
+ NETOPT_IPV6_ADDR,
+ /**
+ * @brief Removes an IPv6 address as @ref ipv6_addr_t from an interface
+ */
+ NETOPT_IPV6_ADDR_REMOVE,
+ /**
+ * @brief get the flags to the addresses returned by @ref NETOPT_IPV6_ADDR
+ * as array of uint8_t
+ *
+ * The information contained in the array is very specific to the
+ * interface's API. For GNRC e.g. the values are according to
+ * @ref net_gnrc_netif2_ipv6_addrs_flags.
+ */
+ NETOPT_IPV6_ADDR_FLAGS,
+ /**
+ * @brief get IPv6 multicast groups of an interface as array of
+ * @ref ipv6_addr_t or join an IPv6 multicast group as
+ * @ref ipv6_addr_t on an interface
+ *
+ * When adding an IPv6 address to a GNRC interface using
+ * @ref GNRC_NETAPI_MSG_TYPE_SET, the gnrc_netapi_opt_t::context field can
+ * be used to pass the prefix length (8 MSB) and some flags (8 LSB)
+ * according to @ref net_gnrc_netif2_ipv6_addrs_flags. The address is however always
+ * considered to be manually added.
+ * When getting the option you can pass an array of @ref ipv6_addr_t of any
+ * length greater than 0 to the getter. The array will be filled up to to
+ * its maximum and the remaining addresses on the interface will be ignored
+ */
+ NETOPT_IPV6_GROUP,
+ /**
+ * @brief Leaves an IPv6 multicast group as @ref ipv6_addr_t on an
+ * interface
+ */
+ NETOPT_IPV6_GROUP_LEAVE,
+ NETOPT_IPV6_FORWARDING, /**< en/disable IPv6 forwarding or read the
+ * current state */
+ NETOPT_IPV6_SND_RTR_ADV, /**< en/disable sending of IPv6 router
+ * advertisements or read the current state */
NETOPT_TX_POWER, /**< get/set the output power for radio
* devices in dBm as int16_t in host byte
* order */
@@ -379,6 +436,10 @@ typedef enum {
*/
NETOPT_IQ_INVERT,
+ NETOPT_6LO_IPHC, /**< en/disable header compression according to
+ * [RFC 6282](https://tools.ietf.org/html/rfc6282)
+ * or read the current state */
+
/**
* @brief Get retry amount from missing ACKs of the last transmission
*
diff --git a/sys/net/crosslayer/netopt/netopt.c b/sys/net/crosslayer/netopt/netopt.c
index 33cb235265..39b9fd0c25 100644
--- a/sys/net/crosslayer/netopt/netopt.c
+++ b/sys/net/crosslayer/netopt/netopt.c
@@ -31,7 +31,15 @@ static const char *_netopt_strmap[] = {
[NETOPT_ADDR_LEN] = "NETOPT_ADDR_LEN",
[NETOPT_SRC_LEN] = "NETOPT_SRC_LEN",
[NETOPT_NID] = "NETOPT_NID",
+ [NETOPT_HOP_LIMIT] = "NETOPT_HOP_LIMIT",
[NETOPT_IPV6_IID] = "NETOPT_IPV6_IID",
+ [NETOPT_IPV6_ADDR] = "NETOPT_IPV6_ADDR",
+ [NETOPT_IPV6_ADDR_REMOVE] = "NETOPT_IPV6_ADDR_REMOVE",
+ [NETOPT_IPV6_ADDR_FLAGS] = "NETOPT_IPV6_ADDR_FLAGS",
+ [NETOPT_IPV6_GROUP] = "NETOPT_IPV6_GROUP",
+ [NETOPT_IPV6_GROUP_LEAVE] = "NETOPT_IPV6_GROUP_LEAVE",
+ [NETOPT_IPV6_FORWARDING] = "NETOPT_IPV6_FORWARDING",
+ [NETOPT_IPV6_SND_RTR_ADV] = "NETOPT_IPV6_SND_RTR_ADV",
[NETOPT_TX_POWER] = "NETOPT_TX_POWER",
[NETOPT_MAX_PACKET_SIZE] = "NETOPT_MAX_PACKET_SIZE",
[NETOPT_PRELOADING] = "NETOPT_PRELOADING",
@@ -78,6 +86,7 @@ static const char *_netopt_strmap[] = {
[NETOPT_FIXED_HEADER] = "NETOPT_FIXED_HEADER",
[NETOPT_IQ_INVERT] = "NETOPT_IQ_INVERT",
[NETOPT_TX_RETRIES_NEEDED] = "NETOPT_TX_RETRIES_NEEDED",
+ [NETOPT_6LO_IPHC] = "NETOPT_6LO_IPHC",
[NETOPT_NUMOF] = "NETOPT_NUMOF",
};
diff --git a/sys/net/gnrc/Makefile b/sys/net/gnrc/Makefile
index 74bc85647c..28e08a942c 100644
--- a/sys/net/gnrc/Makefile
+++ b/sys/net/gnrc/Makefile
@@ -52,6 +52,9 @@ endif
ifneq (,$(filter gnrc_netapi,$(USEMODULE)))
DIRS += netapi
endif
+ifneq (,$(filter gnrc_netif2,$(USEMODULE)))
+ DIRS += netif2
+endif
ifneq (,$(filter gnrc_netif,$(USEMODULE)))
DIRS += netif
endif
diff --git a/sys/net/gnrc/netif2/Makefile b/sys/net/gnrc/netif2/Makefile
new file mode 100644
index 0000000000..590336f5da
--- /dev/null
+++ b/sys/net/gnrc/netif2/Makefile
@@ -0,0 +1,3 @@
+MODULE := gnrc_netif2
+
+include $(RIOTBASE)/Makefile.base
diff --git a/sys/net/gnrc/netif2/gnrc_netif2.c b/sys/net/gnrc/netif2/gnrc_netif2.c
new file mode 100644
index 0000000000..9166b18793
--- /dev/null
+++ b/sys/net/gnrc/netif2/gnrc_netif2.c
@@ -0,0 +1,1265 @@
+/*
+ * Copyright (C) 2014-2017 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 <m.lenders@fu-berlin.de>
+ * @author René Kijewski <rene.kijewski@fu-berlin.de>
+ * @author Oliver Hahm <oliver.hahm@inria.fr>
+ */
+
+#include "bitfield.h"
+#include "net/ethernet.h"
+#include "net/ipv6.h"
+#include "net/gnrc.h"
+#ifdef MODULE_NETSTATS_IPV6
+#include "net/netstats.h"
+#endif
+#include "log.h"
+#include "sched.h"
+
+#include "net/gnrc/netif2.h"
+#include "net/gnrc/netif2/internal.h"
+
+#define ENABLE_DEBUG (0)
+#include "debug.h"
+
+#if ENABLE_DEBUG
+static char addr_str[IPV6_ADDR_MAX_STR_LEN];
+#endif
+
+#define _NETIF_NETAPI_MSG_QUEUE_SIZE (8)
+
+static gnrc_netif2_t _netifs[GNRC_NETIF_NUMOF];
+
+static void _update_l2addr_from_dev(gnrc_netif2_t *netif);
+static void *_gnrc_netif2_thread(void *args);
+static void _event_cb(netdev_t *dev, netdev_event_t event);
+
+gnrc_netif2_t *gnrc_netif2_create(char *stack, int stacksize, char priority,
+ const char *name, netdev_t *netdev,
+ const gnrc_netif2_ops_t *ops)
+{
+ gnrc_netif2_t *netif = NULL;
+ int res;
+
+ for (int i = 0; i < GNRC_NETIF_NUMOF; i++) {
+ if (_netifs[i].ops == NULL) {
+ netif = &_netifs[i];
+ break;
+ }
+ }
+ if (netif == NULL) {
+ LOG_ERROR("gnrc_netif2: can not allocate network interface.\n"
+ "Set GNRC_NETIF_NUMOF to a higher value\n");
+ return NULL;
+ }
+ rmutex_init(&netif->mutex);
+ netif->ops = ops;
+ assert(netif->dev == NULL);
+ netif->dev = netdev;
+ res = thread_create(stack, stacksize, priority, THREAD_CREATE_STACKTEST,
+ _gnrc_netif2_thread, (void *)netif, name);
+ (void)res;
+ assert(res > 0);
+ return netif;
+}
+
+unsigned gnrc_netif2_numof(void)
+{
+ gnrc_netif2_t *netif = NULL;
+ unsigned res = 0;
+
+ while ((netif = gnrc_netif2_iter(netif))) {
+ if (netif->ops != NULL) {
+ res++;
+ }
+ }
+ return res;
+}
+
+gnrc_netif2_t *gnrc_netif2_iter(const gnrc_netif2_t *prev)
+{
+ assert((prev == NULL) || (prev >= _netifs));
+ for (const gnrc_netif2_t *netif = (prev == NULL) ? _netifs : (prev + 1);
+ netif < (_netifs + GNRC_NETIF_NUMOF); netif++) {
+ if (netif->ops != NULL) {
+ /* we don't care about external modification */
+ return (gnrc_netif2_t *)netif;
+ }
+ }
+ return NULL;
+}
+
+int gnrc_netif2_get_from_netdev(gnrc_netif2_t *netif, gnrc_netapi_opt_t *opt)
+{
+ int res = -ENOTSUP;
+
+ gnrc_netif2_acquire(netif);
+ switch (opt->opt) {
+ case NETOPT_HOP_LIMIT:
+ assert(opt->data_len == sizeof(uint8_t));
+ *((uint8_t *)opt->data) = netif->cur_hl;
+ res = sizeof(uint8_t);
+ break;
+ case NETOPT_STATS:
+ /* XXX discussed this with Oleg, it's supposed to be a pointer */
+ switch ((int16_t)opt->context) {
+#if defined(MODULE_NETSTATS_IPV6) && defined(MODULE_GNRC_IPV6)
+ case NETSTATS_IPV6:
+ assert(opt->data_len == sizeof(netstats_t *));
+ *((netstats_t **)opt->data) = &netif->ipv6.stats;
+ res = sizeof(&netif->ipv6.stats);
+ break;
+#endif
+ default:
+ /* take from device */
+ break;
+ }
+ break;
+#ifdef MODULE_GNRC_IPV6
+ case NETOPT_IPV6_ADDR: {
+ assert(opt->data_len >= sizeof(ipv6_addr_t));
+ ipv6_addr_t *tgt = opt->data;
+
+ res = 0;
+ for (unsigned i = 0;
+ (res < opt->data_len) && (i < GNRC_NETIF2_IPV6_ADDRS_NUMOF);
+ i++, tgt++) {
+ if (netif->ipv6.addrs_flags[i] != 0) {
+ memcpy(tgt, &netif->ipv6.addrs[i], sizeof(ipv6_addr_t));
+ res += sizeof(ipv6_addr_t);
+ }
+ }
+ }
+ break;
+ case NETOPT_IPV6_ADDR_FLAGS: {
+ assert(opt->data_len >= sizeof(uint8_t));
+ uint8_t *tgt = opt->data;
+
+ res = 0;
+ for (unsigned i = 0;
+ (res < opt->data_len) && (i < GNRC_NETIF2_IPV6_ADDRS_NUMOF);
+ i++, tgt++) {
+ if (netif->ipv6.addrs_flags[i] != 0) {
+ *tgt = netif->ipv6.addrs_flags[i];
+ res += sizeof(uint8_t);
+ }
+ }
+ }
+ break;
+ case NETOPT_IPV6_GROUP: {
+ assert(opt->data_len >= sizeof(ipv6_addr_t));
+ ipv6_addr_t *tgt = opt->data;
+
+ res = 0;
+ for (unsigned i = 0;
+ (res < opt->data_len) && (i < GNRC_NETIF2_IPV6_GROUPS_NUMOF);
+ i++, tgt++) {
+ if (!ipv6_addr_is_unspecified(&netif->ipv6.groups[i])) {
+ memcpy(tgt, &netif->ipv6.groups[i], sizeof(ipv6_addr_t));
+ res += sizeof(ipv6_addr_t);
+ }
+ }
+ }
+ break;
+ case NETOPT_IPV6_IID:
+ assert(opt->data_len >= sizeof(eui64_t));
+ if (gnrc_netif2_ipv6_get_iid(netif, opt->data) == 0) {
+ res = sizeof(eui64_t);
+ }
+ break;
+ case NETOPT_MAX_PACKET_SIZE:
+ if (opt->context == GNRC_NETTYPE_IPV6) {
+ assert(opt->data_len == sizeof(uint16_t));
+ *((uint16_t *)opt->data) = netif->ipv6.mtu;
+ res = sizeof(uint16_t);
+ }
+ /* else ask device */
+ break;
+#if GNRC_IPV6_NIB_CONF_ROUTER
+ case NETOPT_IPV6_FORWARDING:
+ assert(opt->data_len == sizeof(netopt_enable_t));
+ *((netopt_enable_t *)opt->data) = (gnrc_netif2_is_rtr(netif)) ?
+ NETOPT_ENABLE : NETOPT_DISABLE;
+ res = sizeof(netopt_enable_t);
+ break;
+ case NETOPT_IPV6_SND_RTR_ADV:
+ assert(opt->data_len == sizeof(netopt_enable_t));
+ *((netopt_enable_t *)opt->data) = (gnrc_netif2_is_rtr_adv(netif)) ?
+ NETOPT_ENABLE : NETOPT_DISABLE;
+ res = sizeof(netopt_enable_t);
+ break;
+#endif /* GNRC_IPV6_NIB_CONF_ROUTER */
+#endif /* MODULE_GNRC_IPV6 */
+#ifdef MODULE_GNRC_SIXLOWPAN_IPHC
+ case NETOPT_6LO_IPHC:
+ assert(opt->data_len == sizeof(netopt_enable_t));
+ *((netopt_enable_t *)opt->data) = (netif->flags & GNRC_NETIF2_FLAGS_6LO_HC) ?
+ NETOPT_ENABLE : NETOPT_DISABLE;
+ res = sizeof(netopt_enable_t);
+ break;
+#endif /* MODULE_GNRC_SIXLOWPAN_IPHC */
+ default:
+ break;
+ }
+ if (res == -ENOTSUP) {
+ res = netif->dev->driver->get(netif->dev, opt->opt, opt->data, opt->data_len);
+ }
+ gnrc_netif2_release(netif);
+ return res;
+}
+
+int gnrc_netif2_set_from_netdev(gnrc_netif2_t *netif,
+ const gnrc_netapi_opt_t *opt)
+{
+ int res = -ENOTSUP;
+
+ gnrc_netif2_acquire(netif);
+ switch (opt->opt) {
+ case NETOPT_HOP_LIMIT:
+ assert(opt->data_len == sizeof(uint8_t));
+ netif->cur_hl = *((uint8_t *)opt->data);
+ res = sizeof(uint8_t);
+ break;
+#ifdef MODULE_GNRC_IPV6
+ case NETOPT_IPV6_ADDR: {
+ assert(opt->data_len == sizeof(ipv6_addr_t));
+ /* always assume manually added */
+ uint8_t flags = ((((uint8_t)opt->context & 0xff) &
+ ~GNRC_NETIF2_IPV6_ADDRS_FLAGS_STATE_MASK) |
+ GNRC_NETIF2_IPV6_ADDRS_FLAGS_STATE_VALID);
+ uint8_t pfx_len = (uint8_t)(opt->context >> 8U);
+ /* acquire locks a recursive mutex so we are safe calling this
+ * public function */
+ gnrc_netif2_ipv6_addr_add(netif, opt->data, pfx_len, flags);
+ res = sizeof(ipv6_addr_t);
+ }
+ break;
+ case NETOPT_IPV6_ADDR_REMOVE:
+ assert(opt->data_len == sizeof(ipv6_addr_t));
+ /* acquire locks a recursive mutex so we are safe calling this
+ * public function */
+ gnrc_netif2_ipv6_addr_remove(netif, opt->data);
+ res = sizeof(ipv6_addr_t);
+ break;
+ case NETOPT_IPV6_GROUP:
+ assert(opt->data_len == sizeof(ipv6_addr_t));
+ /* acquire locks a recursive mutex so we are safe calling this
+ * public function */
+ gnrc_netif2_ipv6_group_join(netif, opt->data);
+ res = sizeof(ipv6_addr_t);
+ break;
+ case NETOPT_IPV6_GROUP_LEAVE:
+ assert(opt->data_len == sizeof(ipv6_addr_t));
+ /* acquire locks a recursive mutex so we are safe calling this
+ * public function */
+ gnrc_netif2_ipv6_group_leave(netif, opt->data);
+ res = sizeof(ipv6_addr_t);
+ break;
+ case NETOPT_MAX_PACKET_SIZE:
+ if (opt->context == GNRC_NETTYPE_IPV6) {
+ assert(opt->data_len == sizeof(uint16_t));
+ netif->ipv6.mtu = *((uint16_t *)opt->data);
+ res = sizeof(uint16_t);
+ }
+ /* else set device */
+ break;
+#if GNRC_IPV6_NIB_CONF_ROUTER
+ case NETOPT_IPV6_FORWARDING:
+ assert(opt->data_len == sizeof(netopt_enable_t));
+ if (*(((netopt_enable_t *)opt->data)) == NETOPT_ENABLE) {
+ netif->flags |= GNRC_NETIF2_FLAGS_IPV6_FORWARDING;
+ }
+ else {
+ if (gnrc_netif2_is_rtr_adv(netif)) {
+ gnrc_ipv6_nib_iface_cease_rtr_adv(netif);
+ }
+ netif->flags &= ~GNRC_NETIF2_FLAGS_IPV6_FORWARDING;
+ }
+ res = sizeof(netopt_enable_t);
+ break;
+ case NETOPT_IPV6_SND_RTR_ADV:
+ assert(opt->data_len == sizeof(netopt_enable_t));
+ if (*(((netopt_enable_t *)opt->data)) == NETOPT_ENABLE) {
+ gnrc_ipv6_nib_iface_start_rtr_adv(netif);
+ }
+ else {
+ gnrc_ipv6_nib_iface_cease_rtr_adv(netif);
+ }
+ res = sizeof(netopt_enable_t);
+ break;
+#endif /* GNRC_IPV6_NIB_CONF_ROUTER */
+#endif /* MODULE_GNRC_IPV6 */
+#ifdef MODULE_GNRC_SIXLOWPAN_IPHC
+ case NETOPT_6LO_IPHC:
+ assert(opt->data_len == sizeof(netopt_enable_t));
+ if (*(((netopt_enable_t *)opt->data)) == NETOPT_ENABLE) {
+ netif->flags |= GNRC_NETIF2_FLAGS_6LO_HC;
+ }
+ else {
+ netif->flags &= ~GNRC_NETIF2_FLAGS_6LO_HC;
+ }
+ res = sizeof(netopt_enable_t);
+ break;
+#endif /* MODULE_GNRC_SIXLOWPAN_IPHC */
+ default:
+ break;
+ }
+ if (res == -ENOTSUP) {
+ res = netif->dev->driver->set(netif->dev, opt->opt, opt->data,
+ opt->data_len);
+ if (res > 0) {
+ switch (opt->opt) {
+ case NETOPT_ADDRESS:
+ case NETOPT_ADDRESS_LONG:
+ case NETOPT_ADDR_LEN:
+ case NETOPT_SRC_LEN:
+ _update_l2addr_from_dev(netif);
+ break;
+ default:
+ break;
+ }
+ }
+ }
+ gnrc_netif2_release(netif);
+ return res;
+}
+
+gnrc_netif2_t *gnrc_netif2_get_by_pid(kernel_pid_t pid)
+{
+ gnrc_netif2_t *netif = NULL;
+
+ while ((netif = gnrc_netif2_iter(netif))) {
+ if (netif->pid == pid) {
+ return netif;
+ }
+ }
+ return NULL;
+}
+
+static inline char _half_byte_to_char(uint8_t half_byte)
+{
+ return (half_byte < 10) ? ('0' + half_byte) : ('a' + (half_byte - 10));
+}
+
+char *gnrc_netif2_addr_to_str(const uint8_t *addr, size_t addr_len, char *out)
+{
+ char *res = out;
+
+ assert((out != NULL) && ((addr != NULL) || (addr_len == 0U)));
+ out[0] = '\0';
+ for (size_t i = 0; i < addr_len; i++) {
+ *(out++) = _half_byte_to_char(*(addr) >> 4);
+ *(out++) = _half_byte_to_char(*(addr++) & 0xf);
+ *(out++) = (i == (addr_len - 1)) ? '\0' : ':';
+ }
+ return res;
+}
+
+static inline int _dehex(char c, int default_)
+{
+ if ('0' <= c && c <= '9') {
+ return c - '0';
+ }
+ else if ('A' <= c && c <= 'F') {
+ return c - 'A' + 10;
+ }
+ else if ('a' <= c && c <= 'f') {
+ return c - 'a' + 10;
+ }
+ else {
+ return default_;
+ }
+}
+
+size_t gnrc_netif2_addr_from_str(const char *str, uint8_t *out)
+{
+ /* Walk over str from the end. */
+ /* Take two chars a time as one hex value (%hhx). */
+ /* Leading zeros can be omitted. */
+ /* Every non-hexadimal character is a delimiter. */
+ /* Leading, tailing and adjacent delimiters are forbidden. */
+ const char *end_str = str;
+ uint8_t *out_end = out;
+ size_t count = 0;
+ int assert_cell = 1;
+
+ assert(out != NULL);
+ if ((str == NULL) || (str[0] == '\0')) {
+ return 0;
+ }
+ /* find end of string */
+ while (end_str[1]) {
+ ++end_str;
+ }
+ while (end_str >= str) {
+ int a = 0, b = _dehex(*end_str--, -1);
+
+ if (b < 0) {
+ if (assert_cell) {
+ return 0;
+ }
+ else {
+ assert_cell = 1;
+ continue;
+ }
+ }
+ assert_cell = 0;
+ if (end_str >= str) {
+ a = _dehex(*end_str--, 0);
+ }
+ count++;
+ *out_end++ = (a << 4) | b;
+ }
+ if (assert_cell) {
+ return 0;
+ }
+ /* out is reversed */
+ while (out < --out_end) {
+ uint8_t tmp = *out_end;
+ *out_end = *out;
+ *out++ = tmp;
+ }
+ return count;
+}
+
+#ifdef MODULE_GNRC_IPV6
+static inline bool _addr_anycast(const gnrc_netif2_t *netif, unsigned idx);
+static int _addr_idx(const gnrc_netif2_t *netif, const ipv6_addr_t *addr);
+
+/**
+ * @brief Matches an address by prefix to an address on the interface
+ *
+ * @param[in] netif the network interface
+ * @param[in] addr the address to match
+ * @param[in] filter a bitfield with the bits at the position equal to the
+ * indexes of the addresses you want to include in the
+ * search set to one. NULL for all addresses
+ * @param[out] idx index of the best match. -1 if no match was found.
+ *
+ * @return bits up to which the best match matches @p addr
+ * @return 0, if no match was found
+ */
+static unsigned _match(const gnrc_netif2_t *netif, const ipv6_addr_t *addr,
+ const uint8_t *filter, int *idx);
+
+/**
+ * @brief Determines the scope of the given address.
+ *
+ * @param[in] addr The IPv6 address to check.
+ *
+ * @return The scope of the address.
+ *
+ * @pre address is not loopback or unspecified.
+ * see http://tools.ietf.org/html/rfc6724#section-4
+ */
+static uint8_t _get_scope(const ipv6_addr_t *addr);
+static inline unsigned _get_state(const gnrc_netif2_t *netif, unsigned idx);
+
+/**
+ * @brief selects potential source address candidates
+ * @see <a href="http://tools.ietf.org/html/rfc6724#section-4">
+ * RFC6724, section 4
+ * </a>
+ * @param[in] netif the interface used for sending
+ * @param[in] dst the destination address
+ * @param[in] ll_only only consider link-local addresses
+ * @param[out] candidate_set a bitfield representing all addresses
+ * configured to @p netif, potential candidates
+ * will be marked as 1
+ *
+ * @return -1 if no candidates were found
+ * @return the index of the first candidate otherwise
+ *
+ * @pre the interface entry and its set of addresses must not be changed during
+ * runtime of this function
+ */
+static int _create_candidate_set(const gnrc_netif2_t *netif,
+ const ipv6_addr_t *dst, bool ll_only,
+ uint8_t *candidate_set);
+
+/** @brief Find the best candidate among the configured addresses
+ * for a certain destination address according to the 8 rules
+ * specified in RFC 6734, section 5.
+ * @see <a href="http://tools.ietf.org/html/rfc6724#section-5">
+ * RFC6724, section 5
+ * </a>
+ *
+ * @param[in] netif The interface for sending.
+ * @param[in] dst The destination IPv6 address.
+ * @param[in, out] candidate_set The preselected set of candidate addresses as
+ * a bitfield.
+ *
+ * @pre @p dst is not unspecified.
+ *
+ * @return The best matching candidate found on @p netif, may be NULL if none
+ * is found.
+ */
+static ipv6_addr_t *_src_addr_selection(gnrc_netif2_t *netif,
+ const ipv6_addr_t *dst,
+ uint8_t *candidate_set);
+static int _group_idx(const gnrc_netif2_t *netif, const ipv6_addr_t *addr);
+
+int gnrc_netif2_ipv6_addr_add(gnrc_netif2_t *netif, const ipv6_addr_t *addr,
+ unsigned pfx_len, uint8_t flags)
+{
+ unsigned idx = UINT_MAX;
+
+ assert((netif != NULL) && (addr != NULL));
+ assert(!(ipv6_addr_is_multicast(addr) || ipv6_addr_is_unspecified(addr) ||
+ ipv6_addr_is_loopback(addr)));
+ assert((pfx_len > 0) && (pfx_len <= 128));
+ gnrc_netif2_acquire(netif);
+ if ((flags & GNRC_NETIF2_IPV6_ADDRS_FLAGS_STATE_MASK) ==
+ GNRC_NETIF2_IPV6_ADDRS_FLAGS_STATE_TENTATIVE) {
+ /* set to first retransmission */
+ flags &= ~GNRC_NETIF2_IPV6_ADDRS_FLAGS_STATE_TENTATIVE;
+ flags |= 0x1;
+ }
+ for (unsigned i = 0; i < GNRC_NETIF2_IPV6_ADDRS_NUMOF; i++) {
+ if (ipv6_addr_equal(&netif->ipv6.addrs[i], addr)) {
+ gnrc_netif2_release(netif);
+ return i;
+ }
+ if ((idx == UINT_MAX) && (netif->ipv6.addrs_flags[i] == 0)) {
+ idx = i;
+ }
+ }
+ if (idx == UINT_MAX) {
+ gnrc_netif2_release(netif);
+ return -ENOMEM;
+ }
+ netif->ipv6.addrs_flags[idx] = flags;
+ memcpy(&netif->ipv6.addrs[idx], addr, sizeof(netif->ipv6.addrs[idx]));
+ /* TODO:
+ * - update prefix list, if flags == VALID
+ * - with SLAAC, send out NS otherwise for DAD probing */
+ (void)pfx_len;
+ gnrc_netif2_release(netif);
+ return idx;
+}
+
+void gnrc_netif2_ipv6_addr_remove(gnrc_netif2_t *netif,
+ const ipv6_addr_t *addr)
+{
+ int idx;
+
+ assert((netif != NULL) && (addr != NULL));
+ gnrc_netif2_acquire(netif);
+ idx = _addr_idx(netif, addr);
+ if (idx >= 0) {
+ netif->ipv6.addrs_flags[idx] = 0;
+ ipv6_addr_set_unspecified(&netif->ipv6.addrs[idx]);
+ /* TODO:
+ * - update prefix list, if necessary */
+ }
+ gnrc_netif2_release(netif);
+}
+
+int gnrc_netif2_ipv6_addr_idx(gnrc_netif2_t *netif,
+ const ipv6_addr_t *addr)
+{
+ int idx;
+
+ assert((netif != NULL) && (addr != NULL));
+ DEBUG("gnrc_netif2: get index of %s from inteface %i\n",
+ ipv6_addr_to_str(addr_str, addr, sizeof(addr_str)),
+ netif->pid);
+ gnrc_netif2_acquire(netif);
+ idx = _addr_idx(netif, addr);
+ gnrc_netif2_release(netif);
+ return idx;
+}
+
+int gnrc_netif2_ipv6_addr_match(gnrc_netif2_t *netif,
+ const ipv6_addr_t *addr)
+{
+ int idx;
+
+ assert((netif != NULL) && (addr != NULL));
+ gnrc_netif2_acquire(netif);
+ _match(netif, addr, NULL, &idx);
+ gnrc_netif2_release(netif);
+ return idx;
+}
+
+ipv6_addr_t *gnrc_netif2_ipv6_addr_best_src(gnrc_netif2_t *netif,
+ const ipv6_addr_t *dst,
+ bool ll_only)
+{
+ ipv6_addr_t *best_src = NULL;
+ BITFIELD(candidate_set, GNRC_NETIF2_IPV6_ADDRS_NUMOF);
+
+ assert((netif != NULL) && (dst != NULL));
+ memset(candidate_set, 0, sizeof(candidate_set));
+ gnrc_netif2_acquire(netif);
+ int first_candidate = _create_candidate_set(netif, dst, ll_only,
+ candidate_set);
+ if (first_candidate >= 0) {
+ best_src = _src_addr_selection(netif, dst, candidate_set);
+ if (best_src == NULL) {
+ best_src = &(netif->ipv6.addrs[first_candidate]);
+ }
+ }
+ gnrc_netif2_release(netif);
+ return best_src;
+}
+
+gnrc_netif2_t *gnrc_netif2_get_by_ipv6_addr(const ipv6_addr_t *addr)
+{
+ gnrc_netif2_t *netif = NULL;
+
+ DEBUG("gnrc_netif2: get interface by IPv6 address %s\n",
+ ipv6_addr_to_str(addr_str, addr, sizeof(addr_str)));
+ while ((netif = gnrc_netif2_iter(netif))) {
+ if (_addr_idx(netif, addr) >= 0) {
+ break;
+ }
+ if (_group_idx(netif, addr) >= 0) {
+ break;
+ }
+ }
+ return netif;
+}
+
+gnrc_netif2_t *gnrc_netif2_get_by_prefix(const ipv6_addr_t *prefix)
+{
+ gnrc_netif2_t *netif = NULL, *best_netif = NULL;
+ unsigned best_match = 0;
+
+ while ((netif = gnrc_netif2_iter(netif))) {
+ unsigned match;
+ int idx;
+
+ if (((match = _match(netif, prefix, NULL, &idx)) > 0) &&
+ (match > best_match)) {
+ best_match = match;
+ best_netif = netif;
+ }
+ }
+ return best_netif;
+}
+
+int gnrc_netif2_ipv6_group_join(gnrc_netif2_t *netif,
+ const ipv6_addr_t *addr)
+{
+ unsigned idx = UINT_MAX;
+
+ gnrc_netif2_acquire(netif);
+ for (unsigned i = 0; i < GNRC_NETIF2_IPV6_GROUPS_NUMOF; i++) {
+ if (ipv6_addr_equal(&netif->ipv6.groups[i], addr)) {
+ gnrc_netif2_release(netif);
+ return i;
+ }
+ if ((idx == UINT_MAX) && (ipv6_addr_is_unspecified(&netif->ipv6.groups[i]))) {
+ idx = i;
+ }
+ }
+ if (idx == UINT_MAX) {
+ gnrc_netif2_release(netif);
+ return -ENOMEM;
+ }
+ memcpy(&netif->ipv6.groups[idx], addr, sizeof(netif->ipv6.groups[idx]));
+ /* TODO:
+ * - MLD action
+ */
+ gnrc_netif2_release(netif);
+ return idx;
+}
+
+void gnrc_netif2_ipv6_group_leave(gnrc_netif2_t *netif,
+ const ipv6_addr_t *addr)
+{
+ int idx;
+
+ assert((netif != NULL) && (addr != NULL));
+ gnrc_netif2_acquire(netif);
+ idx = _group_idx(netif, addr);
+ if (idx >= 0) {
+ ipv6_addr_set_unspecified(&netif->ipv6.groups[idx]);
+ /* TODO:
+ * - MLD action */
+ }
+ gnrc_netif2_release(netif);
+}
+
+int gnrc_netif2_ipv6_group_idx(gnrc_netif2_t *netif, const ipv6_addr_t *addr)
+{
+ int idx;
+
+ assert((netif != NULL) && (addr != NULL));
+ gnrc_netif2_acquire(netif);
+ idx = _group_idx(netif, addr);
+ gnrc_netif2_release(netif);
+ return idx;
+}
+
+int gnrc_netif2_ipv6_get_iid(gnrc_netif2_t *netif, eui64_t *eui64)
+{
+#if GNRC_NETIF2_L2ADDR_MAXLEN > 0
+ if (netif->flags & GNRC_NETIF2_FLAGS_HAS_L2ADDR) {
+ switch (netif->device_type) {
+#ifdef MODULE_NETDEV_ETH
+ case NETDEV_TYPE_ETHERNET:
+ assert(netif->l2addr_len == ETHERNET_ADDR_LEN);
+ eui64->uint8[0] = netif->l2addr[0] ^ 0x02;
+ eui64->uint8[1] = netif->l2addr[1];
+ eui64->uint8[2] = netif->l2addr[2];
+ eui64->uint8[3] = 0xff;
+ eui64->uint8[4] = 0xfe;
+ eui64->uint8[5] = netif->l2addr[3];
+ eui64->uint8[6] = netif->l2addr[4];
+ eui64->uint8[7] = netif->l2addr[5];
+ return 0;
+#endif
+#ifdef MODULE_NETDEV_IEEE802154
+ case NETDEV_TYPE_IEEE802154:
+ switch (netif->l2addr_len) {
+ case IEEE802154_SHORT_ADDRESS_LEN:
+ eui64->uint8[0] = 0x0;
+ eui64->uint8[1] = 0x0;
+ eui64->uint8[2] = 0x0;
+ eui64->uint8[3] = 0xff;
+ eui64->uint8[4] = 0xfe;
+ eui64->uint8[5] = 0x0;
+ eui64->uint8[6] = netif->l2addr[0];
+ eui64->uint8[7] = netif->l2addr[1];
+ return 0;
+ case IEEE802154_LONG_ADDRESS_LEN:
+ memcpy(eui64, netif->l2addr, sizeof(eui64_t));
+ eui64->uint8[0] ^= 0x02;
+ return 0;
+ default:
+ /* this should not happen */
+ assert(false);
+ break;
+ }
+ break;
+#endif
+#ifdef MODULE_CC110X
+ case NETDEV_TYPE_CC110X:
+ assert(netif->l2addr_len == 1U);
+ eui64->uint8[0] = 0x0;
+ eui64->uint8[1] = 0x0;
+ eui64->uint8[2] = 0x0;
+ eui64->uint8[3] = 0xff;
+ eui64->uint8[4] = 0xfe;
+ eui64->uint8[5] = 0x0;
+ eui64->uint8[6] = 0x0;
+ eui64->uint8[7] = netif->l2addr[0];
+ return 0;
+#endif
+ default:
+ (void)eui64;
+ break;
+ }
+ }
+#endif
+ return -ENOTSUP;
+}
+
+static inline bool _addr_anycast(const gnrc_netif2_t *netif, unsigned idx)
+{
+ return (netif->ipv6.addrs_flags[idx] & GNRC_NETIF2_IPV6_ADDRS_FLAGS_ANYCAST);
+}
+
+static int _addr_idx(const gnrc_netif2_t *netif, const ipv6_addr_t *addr)
+{
+ for (unsigned i = 0; i < GNRC_NETIF2_IPV6_ADDRS_NUMOF; i++) {
+ if (ipv6_addr_equal(&netif->ipv6.addrs[i], addr)) {
+ return i;
+ }
+ }
+ return -1;
+}
+
+static unsigned _match(const gnrc_netif2_t *netif, const ipv6_addr_t *addr,
+ const uint8_t *filter, int *idx)
+{
+ unsigned best_match = 0;
+
+ assert(idx != NULL);
+ *idx = -1;
+ for (int i = 0; i < GNRC_NETIF2_IPV6_ADDRS_NUMOF; i++) {
+ unsigned match;
+
+ if ((netif->ipv6.addrs_flags[i] == 0) ||
+ ((filter != NULL) && _addr_anycast(netif, i)) ||
+ /* discard const intentionally */
+ ((filter != NULL) && !(bf_isset((uint8_t *)filter, i)))) {
+ continue;
+ }
+ match = ipv6_addr_match_prefix(&(netif->ipv6.addrs[i]), addr);
+ if (((match > 64U) || !ipv6_addr_is_link_local(&(netif->ipv6.addrs[i]))) &&
+ (match > best_match)) {
+ if (idx != NULL) {
+ *idx = i;
+ }
+ best_match = match;
+ }
+ }
+#if ENABLE_DEBUG
+ if (*idx >= 0) {
+ DEBUG("gnrc_netif2: Found %s on interface %" PRIkernel_pid " matching ",
+ ipv6_addr_to_str(addr_str, &netif->ipv6.addrs[*idx],
+ sizeof(addr_str)),
+ netif->pid);
+ DEBUG("%s by %" PRIu8 " bits (used as source address = %s)\n",
+ ipv6_addr_to_str(addr_str, addr, sizeof(addr_str)),
+ best_match,
+ (filter != NULL) ? "true" : "false");
+ }
+ else {
+ DEBUG("gnrc_netif2: Did not found any address on interface %" PRIkernel_pid
+ " matching %s (used as source address = %s)\n",
+ netif->pid,
+ ipv6_addr_to_str(addr_str, addr, sizeof(addr_str)),
+ (filter != NULL) ? "true" : "false");
+ }
+#endif
+ return best_match;
+}
+
+static uint8_t _get_scope(const ipv6_addr_t *addr)
+{
+ if (ipv6_addr_is_link_local(addr)) {
+ return IPV6_ADDR_MCAST_SCP_LINK_LOCAL;
+ }
+ else if (ipv6_addr_is_site_local(addr)) {
+ return IPV6_ADDR_MCAST_SCP_SITE_LOCAL;
+ }
+ else {
+ return IPV6_ADDR_MCAST_SCP_GLOBAL;
+ }
+}
+
+static inline unsigned _get_state(const gnrc_netif2_t *netif, unsigned idx)
+{
+ return (netif->ipv6.addrs_flags[idx] &
+ GNRC_NETIF2_IPV6_ADDRS_FLAGS_STATE_MASK);
+}
+
+/**
+ * @brief selects potential source address candidates
+ * @see <a href="http://tools.ietf.org/html/rfc6724#section-4">
+ * RFC6724, section 4
+ * </a>
+ * @param[in] netif the interface used for sending
+ * @param[in] dst the destination address
+ * @param[in] ll_only only consider link-local addresses
+ * @param[out] candidate_set a bitfield representing all addresses
+ * configured to @p netif, potential candidates
+ * will be marked as 1
+ *
+ * @return -1 if no candidates were found
+ * @return the index of the first candidate otherwise
+ *
+ * @pre the interface entry and its set of addresses must not be changed during
+ * runtime of this function
+ */
+static int _create_candidate_set(const gnrc_netif2_t *netif,
+ const ipv6_addr_t *dst, bool ll_only,
+ uint8_t *candidate_set)
+{
+ int res = -1;
+
+ DEBUG("gathering candidates\n");
+ /* currently this implementation supports only addresses as source address
+ * candidates assigned to this interface. Thus we assume all addresses to be
+ * on interface @p netif */
+ (void) dst;
+ for (int i = 0; i < GNRC_NETIF2_IPV6_ADDRS_NUMOF; i++) {
+ const ipv6_addr_t *tmp = &(netif->ipv6.addrs[i]);
+
+ DEBUG("Checking address: %s\n",
+ ipv6_addr_to_str(addr_str, tmp, sizeof(addr_str)));
+ /* "In any case, multicast addresses and the unspecified address MUST NOT
+ * be included in a candidate set."
+ */
+ if ((netif->ipv6.addrs_flags[i] == 0) ||
+ (gnrc_netif2_ipv6_addr_get_state(netif, i) ==
+ GNRC_NETIF2_IPV6_ADDRS_FLAGS_STATE_TENTATIVE)) {
+ continue;
+ }
+ /* Check if we only want link local addresses */
+ if (ll_only && !ipv6_addr_is_link_local(tmp)) {
+ continue;
+ }
+ /* "For all multicast and link-local destination addresses, the set of
+ * candidate source addresses MUST only include addresses assigned to
+ * interfaces belonging to the same link as the outgoing interface."
+ *
+ * "For site-local unicast destination addresses, the set of candidate
+ * source addresses MUST only include addresses assigned to interfaces
+ * belonging to the same site as the outgoing interface."
+ * -> we should also be fine, since we're only iterating addresses of
+ * the sending interface
+ */
+ /* put all other addresses into the candidate set */
+ DEBUG("add to candidate set\n");
+ bf_set(candidate_set, i);
+ if (res < 0) {
+ res = i;
+ }
+ }
+ return res;
+}
+
+/* number of "points" assigned to an source address candidate with equal scope
+ * than destination address */
+#define RULE_2A_PTS (4)
+/* number of "points" assigned to an source address candidate with smaller scope
+ * than destination address */
+#define RULE_2B_PTS (2)
+/* number of "points" assigned to an source address candidate in preferred state */
+#define RULE_3_PTS (1)
+
+static ipv6_addr_t *_src_addr_selection(gnrc_netif2_t *netif,
+ const ipv6_addr_t *dst,
+ uint8_t *candidate_set)
+{
+ /* create temporary set for assigning "points" to candidates winning in the
+ * corresponding rules.
+ */
+ uint8_t winner_set[GNRC_NETIF2_IPV6_ADDRS_NUMOF];
+
+ memset(winner_set, 0, GNRC_NETIF2_IPV6_ADDRS_NUMOF);
+ uint8_t max_pts = 0;
+ /* _create_candidate_set() assures that `dst` is not unspecified and if
+ * `dst` is loopback rule 1 will fire anyway. */
+ uint8_t dst_scope = _get_scope(dst);
+
+ DEBUG("finding the best match within the source address candidates\n");
+ for (unsigned i = 0; i < GNRC_NETIF2_IPV6_ADDRS_NUMOF; i++) {
+ ipv6_addr_t *ptr = &(netif->ipv6.addrs[i]);
+
+ DEBUG("Checking address: %s\n",
+ ipv6_addr_to_str(addr_str, ptr, sizeof(addr_str)));
+ /* entries which are not part of the candidate set can be ignored */
+ if (!(bf_isset(candidate_set, i))) {
+ DEBUG("Not part of the candidate set - skipping\n");
+ continue;
+ }
+ /* Rule 1: if we have an address configured that equals the destination
+ * use this one as source */
+ if (ipv6_addr_equal(ptr, dst)) {
+ DEBUG("Ease one - rule 1\n");
+ return ptr;
+ }
+ /* Rule 2: Prefer appropriate scope. */
+ /* both link local */
+ uint8_t candidate_scope = _get_scope(ptr);
+ if (candidate_scope == dst_scope) {
+ DEBUG("winner for rule 2 (same scope) found\n");
+ winner_set[i] += RULE_2A_PTS;
+ if (winner_set[i] > max_pts) {
+ max_pts = RULE_2A_PTS;
+ }
+ }
+ else if (candidate_scope < dst_scope) {
+ DEBUG("winner for rule 2 (smaller scope) found\n");
+ winner_set[i] += RULE_2B_PTS;
+ if (winner_set[i] > max_pts) {
+ max_pts = winner_set[i];
+ }
+ }
+ /* Rule 3: Avoid deprecated addresses. */
+ if (_get_state(netif, i) == GNRC_NETIF2_IPV6_ADDRS_FLAGS_STATE_DEPRECATED) {
+ DEBUG("winner for rule 3 found\n");
+ winner_set[i] += RULE_3_PTS;
+ if (winner_set[i] > max_pts) {
+ max_pts = winner_set[i];
+ }
+ }
+
+ /* Rule 4: Prefer home addresses.
+ * Does not apply, gnrc does not support Mobile IP.
+ * TODO: update as soon as gnrc supports Mobile IP
+ */
+
+ /* Rule 5: Prefer outgoing interface.
+ * RFC 6724 says:
+ * "It is RECOMMENDED that the candidate source addresses be the set of
+ * unicast addresses assigned to the interface that will be used to
+ * send to the destination (the "outgoing" interface). On routers,
+ * the candidate set MAY include unicast addresses assigned to any
+ * interface that forwards packets, subject to the restrictions
+ * described below."
+ * Currently this implementation uses ALWAYS source addresses assigned
+ * to the outgoing interface. Hence, Rule 5 is always fulfilled.
+ */
+
+ /* Rule 6: Prefer matching label.
+ * Flow labels are currently not supported by gnrc.
+ * TODO: update as soon as gnrc supports flow labels
+ */
+
+ /* Rule 7: Prefer temporary addresses.
+ * Temporary addresses are currently not supported by gnrc.
+ * TODO: update as soon as gnrc supports temporary addresses
+ */
+ }
+ /* reset candidate set to mark winners */
+ memset(candidate_set, 0, (GNRC_NETIF2_IPV6_ADDRS_NUMOF + 7) / 8);
+ /* check if we have a clear winner */
+ /* collect candidates with maximum points */
+ for (int i = 0; i < GNRC_NETIF2_IPV6_ADDRS_NUMOF; i++) {
+ if (winner_set[i] == max_pts) {
+ bf_set(candidate_set, i);
+ }
+ }
+ /* otherwise apply rule 8: Use longest matching prefix. */
+ int res;
+ _match(netif, dst, candidate_set, &res);
+ return (res < 0) ? NULL : &netif->ipv6.addrs[res];
+}
+
+static int _group_idx(const gnrc_netif2_t *netif, const ipv6_addr_t *addr)
+{
+ for (unsigned i = 0; i < GNRC_NETIF2_IPV6_GROUPS_NUMOF; i++) {
+ if (ipv6_addr_equal(&netif->ipv6.groups[i], addr)) {
+ return i;
+ }
+ }
+ return -1;
+}
+
+#endif /* MODULE_GNRC_IPV6 */
+
+static void _update_l2addr_from_dev(gnrc_netif2_t *netif)
+{
+ netdev_t *dev = netif->dev;
+ int res;
+ netopt_t opt = NETOPT_ADDRESS;
+
+ switch (netif->device_type) {
+#ifdef MODULE_NETDEV_IEEE802154
+ case NETDEV_TYPE_IEEE802154: {
+ uint16_t tmp;
+
+ res = dev->driver->get(dev, NETOPT_SRC_LEN, &tmp, sizeof(tmp));
+ assert(res == sizeof(tmp));
+ netif->l2addr_len = (uint8_t)tmp;
+ if (tmp == IEEE802154_LONG_ADDRESS_LEN) {
+ opt = NETOPT_ADDRESS_LONG;
+ }
+ }
+ break;
+#endif
+ default:
+ break;
+ }
+ res = dev->driver->get(dev, opt, netif->l2addr,
+ sizeof(netif->l2addr));
+ if (res != -ENOTSUP) {
+ netif->flags |= GNRC_NETIF2_FLAGS_HAS_L2ADDR;
+ }
+ if (res > 0) {
+ netif->l2addr_len = res;
+ }
+}
+
+static void _init_from_device(gnrc_netif2_t *netif)
+{
+ int res;
+ netdev_t *dev = netif->dev;
+ uint16_t tmp;
+
+ res = dev->driver->get(dev, NETOPT_DEVICE_TYPE, &tmp, sizeof(tmp));
+ (void)res;
+ assert(res == sizeof(tmp));
+ netif->device_type = (uint8_t)tmp;
+ switch (netif->device_type) {
+#ifdef MODULE_NETDEV_IEEE802154
+ case NETDEV_TYPE_IEEE802154:
+#ifdef MODULE_GNRC_SIXLOWPAN_IPHC
+ netif->flags |= GNRC_NETIF2_FLAGS_6LO_HC;
+#endif
+#ifdef MODULE_GNRC_IPV6
+ res = dev->driver->get(dev, NETOPT_MAX_PACKET_SIZE, &tmp, sizeof(tmp));
+ assert(res == sizeof(tmp));
+#ifdef MODULE_GNRC_SIXLOWPAN
+ netif->ipv6.mtu = IPV6_MIN_MTU;
+ netif->sixlo.max_frag_size = tmp;
+#else
+ netif->ipv6.mtu = tmp;
+#endif
+#endif
+ break;
+#endif /* MODULE_NETDEV_IEEE802154 */
+#ifdef MODULE_NETDEV_ETH
+ case NETDEV_TYPE_ETHERNET:
+#ifdef MODULE_GNRC_IPV6
+ netif->ipv6.mtu = ETHERNET_DATA_LEN;
+#endif
+ break;
+#endif
+ default:
+ res = dev->driver->get(dev, NETOPT_MAX_PACKET_SIZE, &tmp, sizeof(tmp));
+ assert(res == sizeof(tmp));
+#ifdef MODULE_GNRC_IPV6
+ netif->ipv6.mtu = tmp;
+#endif
+ }
+ _update_l2addr_from_dev(netif);
+}
+
+static void *_gnrc_netif2_thread(void *args)
+{
+ gnrc_netapi_opt_t *opt;
+ gnrc_netif2_t *netif;
+ netdev_t *dev;
+ int res;
+ msg_t reply = { .type = GNRC_NETAPI_MSG_TYPE_ACK };
+ msg_t msg, msg_queue[_NETIF_NETAPI_MSG_QUEUE_SIZE];
+
+ DEBUG("gnrc_netif2: starting thread %i\n", sched_active_pid);
+ netif = args;
+ gnrc_netif2_acquire(netif);
+ dev = netif->dev;
+ netif->pid = sched_active_pid;
+ /* setup the link-layer's message queue */
+ msg_init_queue(msg_queue, _NETIF_NETAPI_MSG_QUEUE_SIZE);
+ /* register the event callback with the device driver */
+ dev->event_callback = _event_cb;
+ dev->context = netif;
+ /* initialize low-level driver */
+ dev->driver->init(dev);
+ _init_from_device(netif);
+ netif->cur_hl = GNRC_NETIF2_DEFAULT_HL;
+#ifdef MODULE_GNRC_IPV6_NIB
+ gnrc_ipv6_nib_init_iface(netif);
+#endif
+ if (netif->ops->init) {
+ netif->ops->init(netif);
+ }
+ /* now let rest of GNRC use the interface */
+ gnrc_netif2_release(netif);
+
+ while (1) {
+ DEBUG("gnrc_netif2: waiting for incoming messages\n");
+ msg_receive(&msg);
+ /* dispatch netdev, MAC and gnrc_netapi messages */
+ switch (msg.type) {
+ case NETDEV_MSG_TYPE_EVENT:
+ DEBUG("gnrc_netif2: GNRC_NETDEV_MSG_TYPE_EVENT received\n");
+ dev->driver->isr(dev);
+ break;
+ case GNRC_NETAPI_MSG_TYPE_SND:
+ DEBUG("gnrc_netif2: GNRC_NETDEV_MSG_TYPE_SND received\n");
+ res = netif->ops->send(netif, msg.content.ptr);
+#if ENABLE_DEBUG
+ if (res < 0) {
+ DEBUG("gnrc_netif2: error sending packet %p (code: %u)\n",
+ msg.content.ptr, res);
+ }
+#endif
+ break;
+ case GNRC_NETAPI_MSG_TYPE_SET:
+ opt = msg.content.ptr;
+#ifdef MODULE_NETOPT
+ DEBUG("gnrc_netif2: GNRC_NETAPI_MSG_TYPE_SET received. opt=%s\n",
+ netopt2str(opt->opt));
+#else
+ DEBUG("gnrc_netif2: GNRC_NETAPI_MSG_TYPE_SET received. opt=%s\n",
+ opt->opt);
+#endif
+ /* set option for device driver */
+ res = netif->ops->set(netif, opt);
+ DEBUG("gnrc_netif2: response of netif->ops->set(): %i\n", res);
+ reply.content.value = (uint32_t)res;
+ msg_reply(&msg, &reply);
+ break;
+ case GNRC_NETAPI_MSG_TYPE_GET:
+ opt = msg.content.ptr;
+#ifdef MODULE_NETOPT
+ DEBUG("gnrc_netif2: GNRC_NETAPI_MSG_TYPE_GET received. opt=%s\n",
+ netopt2str(opt->opt));
+#else
+ DEBUG("gnrc_netif2: GNRC_NETAPI_MSG_TYPE_GET received. opt=%s\n",
+ opt->opt);
+#endif
+ /* get option from device driver */
+ res = netif->ops->get(netif, opt);
+ DEBUG("gnrc_netif2: response of netif->ops->get(): %i\n", res);
+ reply.content.value = (uint32_t)res;
+ msg_reply(&msg, &reply);
+ break;
+ default:
+ if (netif->ops->msg_handler) {
+ DEBUG("gnrc_netif2: delegate message of type 0x%04x to "
+ "netif->ops->msg_handler()\n", msg.type);
+ netif->ops->msg_handler(netif, &msg);
+ }
+#if ENABLE_DEBUG
+ else {
+ DEBUG("gnrc_netif2: unknown message type 0x%04x"
+ "(no message handler defined)\n", msg.type);
+ }
+#endif
+ break;
+ }
+ }
+ /* never reached */
+ return NULL;
+}
+
+static void _pass_on_packet(gnrc_pktsnip_t *pkt)
+{
+ /* throw away packet if no one is interested */
+ if (!gnrc_netapi_dispatch_receive(pkt->type, GNRC_NETREG_DEMUX_CTX_ALL, pkt)) {
+ DEBUG("gnrc_netif2: unable to forward packet of type %i\n", pkt->type);
+ gnrc_pktbuf_release(pkt);
+ return;
+ }
+}
+
+static void _event_cb(netdev_t *dev, netdev_event_t event)
+{
+ gnrc_netif2_t *netif = (gnrc_netif2_t *) dev->context;
+
+ if (event == NETDEV_EVENT_ISR) {
+ msg_t msg = { .type = NETDEV_MSG_TYPE_EVENT,
+ .content = { .ptr = netif } };
+
+ if (msg_send(&msg, netif->pid) <= 0) {
+ puts("gnrc_netif2: possibly lost interrupt.");
+ }
+ }
+ else {
+ DEBUG("gnrc_netif2: event triggered -> %i\n", event);
+ switch (event) {
+ case NETDEV_EVENT_RX_COMPLETE: {
+ gnrc_pktsnip_t *pkt = netif->ops->recv(netif);
+
+ if (pkt) {
+ _pass_on_packet(pkt);
+ }
+ }
+ break;
+#ifdef MODULE_NETSTATS_L2
+ case NETDEV_EVENT_TX_MEDIUM_BUSY:
+ /* we are the only ones supposed to touch this variable,
+ * so no acquire necessary */
+ dev->stats.tx_failed++;
+ break;
+ case NETDEV_EVENT_TX_COMPLETE:
+ /* we are the only ones supposed to touch this variable,
+ * so no acquire necessary */
+ dev->stats.tx_success++;
+ break;
+#endif
+ default:
+ DEBUG("gnrc_netif2: warning: unhandled event %u.\n", event);
+ }
+ }
+}
+/** @} */
diff --git a/sys/net/gnrc/netif2/gnrc_netif2_ethernet.c b/sys/net/gnrc/netif2/gnrc_netif2_ethernet.c
new file mode 100644
index 0000000000..70152ea23a
--- /dev/null
+++ b/sys/net/gnrc/netif2/gnrc_netif2_ethernet.c
@@ -0,0 +1,253 @@
+/*
+ * Copyright (C) 2015 Kaspar Schleiser <kaspar@schleiser.de>
+ * Copyright (C) 2017 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>
+ * @author Kaspar Schleiser <kaspar@schleiser.de>
+ */
+
+#ifdef MODULE_NETDEV_ETH
+#include "net/ethernet/hdr.h"
+#include "net/gnrc.h"
+#include "net/gnrc/netif2/ethernet.h"
+#ifdef MODULE_GNRC_IPV6
+#include "net/ipv6/hdr.h"
+#endif
+
+#define ENABLE_DEBUG (0)
+#include "debug.h"
+
+static int _send(gnrc_netif2_t *netif, gnrc_pktsnip_t *pkt);
+static gnrc_pktsnip_t *_recv(gnrc_netif2_t *netif);
+
+static const gnrc_netif2_ops_t ethernet_ops = {
+ .send = _send,
+ .recv = _recv,
+ .get = gnrc_netif2_get_from_netdev,
+ .set = gnrc_netif2_set_from_netdev,
+};
+
+gnrc_netif2_t *gnrc_netif2_ethernet_create(char *stack, int stacksize,
+ char priority, char *name,
+ netdev_t *dev)
+{
+ return gnrc_netif2_create(stack, stacksize, priority, name, dev,
+ ðernet_ops);
+}
+
+static inline void _addr_set_broadcast(uint8_t *dst)
+{
+ memset(dst, 0xff, ETHERNET_ADDR_LEN);
+}
+
+static inline void _addr_set_multicast(uint8_t *dst, gnrc_pktsnip_t *payload)
+{
+ switch (payload->type) {
+#ifdef MODULE_GNRC_IPV6
+ case GNRC_NETTYPE_IPV6:
+ /* https://tools.ietf.org/html/rfc2464#section-7 */
+ dst[0] = 0x33;
+ dst[1] = 0x33;
+ ipv6_hdr_t *ipv6 = payload->data;
+ memcpy(dst + 2, ipv6->dst.u8 + 12, 4);
+ break;
+#endif
+ default:
+ _addr_set_broadcast(dst);
+ break;
+ }
+}
+
+static int _send(gnrc_netif2_t *netif, gnrc_pktsnip_t *pkt)
+{
+ ethernet_hdr_t hdr;
+ gnrc_netif_hdr_t *netif_hdr;
+ gnrc_pktsnip_t *payload;
+ int res;
+
+ netdev_t *dev = netif->dev;
+
+ if (pkt == NULL) {
+ DEBUG("gnrc_netif2_ethernet: pkt was NULL\n");
+ return -EINVAL;
+ }
+
+ payload = pkt->next;
+
+ if (pkt->type != GNRC_NETTYPE_NETIF) {
+ DEBUG("gnrc_netif2_ethernet: First header was not generic netif header\n");
+ return -EBADMSG;
+ }
+
+ if (payload) {
+ hdr.type = byteorder_htons(gnrc_nettype_to_ethertype(payload->type));
+ }
+ else {
+ hdr.type = byteorder_htons(ETHERTYPE_UNKNOWN);
+ }
+
+ netif_hdr = pkt->data;
+
+ /* set ethernet header */
+ if (netif_hdr->src_l2addr_len == ETHERNET_ADDR_LEN) {
+ memcpy(hdr.dst, gnrc_netif_hdr_get_src_addr(netif_hdr),
+ netif_hdr->src_l2addr_len);
+ }
+ else {
+ dev->driver->get(dev, NETOPT_ADDRESS, hdr.src, ETHERNET_ADDR_LEN);
+ }
+
+ if (netif_hdr->flags & GNRC_NETIF_HDR_FLAGS_BROADCAST) {
+ _addr_set_broadcast(hdr.dst);
+ }
+ else if (netif_hdr->flags & GNRC_NETIF_HDR_FLAGS_MULTICAST) {
+ if (payload == NULL) {
+ DEBUG("gnrc_netif2_ethernet: empty multicast packets over Ethernet "
+ "are not yet supported\n");
+ return -ENOTSUP;
+ }
+ _addr_set_multicast(hdr.dst, payload);
+ }
+ else if (netif_hdr->dst_l2addr_len == ETHERNET_ADDR_LEN) {
+ memcpy(hdr.dst, gnrc_netif_hdr_get_dst_addr(netif_hdr),
+ ETHERNET_ADDR_LEN);
+ }
+ else {
+ DEBUG("gnrc_netif2_ethernet: destination address had unexpected "
+ "format\n");
+ return -EBADMSG;
+ }
+
+ DEBUG("gnrc_netif2_ethernet: send to %02x:%02x:%02x:%02x:%02x:%02x\n",
+ hdr.dst[0], hdr.dst[1], hdr.dst[2],
+ hdr.dst[3], hdr.dst[4], hdr.dst[5]);
+
+ size_t n;
+ payload = gnrc_pktbuf_get_iovec(pkt, &n); /* use payload as temporary
+ * variable */
+ res = -ENOBUFS;
+ if (payload != NULL) {
+ pkt = payload; /* reassign for later release; vec_snip is prepended to pkt */
+ struct iovec *vector = (struct iovec *)pkt->data;
+ vector[0].iov_base = (char *)&hdr;
+ vector[0].iov_len = sizeof(ethernet_hdr_t);
+#ifdef MODULE_NETSTATS_L2
+ if ((netif_hdr->flags & GNRC_NETIF_HDR_FLAGS_BROADCAST) ||
+ (netif_hdr->flags & GNRC_NETIF_HDR_FLAGS_MULTICAST)) {
+ dev->stats.tx_mcast_count++;
+ }
+ else {
+ dev->stats.tx_unicast_count++;
+ }
+#endif
+ res = dev->driver->send(dev, vector, n);
+ }
+
+ gnrc_pktbuf_release(pkt);
+
+ return res;
+}
+
+static gnrc_pktsnip_t *_recv(gnrc_netif2_t *netif)
+{
+ netdev_t *dev = netif->dev;
+ int bytes_expected = dev->driver->recv(dev, NULL, 0, NULL);
+ gnrc_pktsnip_t *pkt = NULL;
+
+ if (bytes_expected > 0) {
+ pkt = gnrc_pktbuf_add(NULL, NULL,
+ bytes_expected,
+ GNRC_NETTYPE_UNDEF);
+
+ if (!pkt) {
+ DEBUG("gnrc_netif2_ethernet: cannot allocate pktsnip.\n");
+
+ /* drop the packet */
+ dev->driver->recv(dev, NULL, bytes_expected, NULL);
+
+ goto out;
+ }
+
+ int nread = dev->driver->recv(dev, pkt->data, bytes_expected, NULL);
+ if (nread <= 0) {
+ DEBUG("gnrc_netif2_ethernet: read error.\n");
+ goto safe_out;
+ }
+
+ if (nread < bytes_expected) {
+ /* we've got less than the expected packet size,
+ * so free the unused space.*/
+
+ DEBUG("gnrc_netif2_ethernet: reallocating.\n");
+ gnrc_pktbuf_realloc_data(pkt, nread);
+ }
+
+ /* mark ethernet header */
+ gnrc_pktsnip_t *eth_hdr = gnrc_pktbuf_mark(pkt, sizeof(ethernet_hdr_t), GNRC_NETTYPE_UNDEF);
+ if (!eth_hdr) {
+ DEBUG("gnrc_netif2_ethernet: no space left in packet buffer\n");
+ goto safe_out;
+ }
+
+ ethernet_hdr_t *hdr = (ethernet_hdr_t *)eth_hdr->data;
+
+#ifdef MODULE_L2FILTER
+ if (!l2filter_pass(dev->filter, hdr->src, ETHERNET_ADDR_LEN)) {
+ DEBUG("gnrc_netif2_ethernet: incoming packet filtered by l2filter\n");
+ goto safe_out;
+ }
+#endif
+
+ /* set payload type from ethertype */
+ pkt->type = gnrc_nettype_from_ethertype(byteorder_ntohs(hdr->type));
+
+ /* create netif header */
+ gnrc_pktsnip_t *netif_hdr;
+ netif_hdr = gnrc_pktbuf_add(NULL, NULL,
+ sizeof(gnrc_netif_hdr_t) + (2 * ETHERNET_ADDR_LEN),
+ GNRC_NETTYPE_NETIF);
+
+ if (netif_hdr == NULL) {
+ DEBUG("gnrc_netif2_ethernet: no space left in packet buffer\n");
+ pkt = eth_hdr;
+ goto safe_out;
+ }
+
+ gnrc_netif_hdr_init(netif_hdr->data, ETHERNET_ADDR_LEN, ETHERNET_ADDR_LEN);
+ gnrc_netif_hdr_set_src_addr(netif_hdr->data, hdr->src, ETHERNET_ADDR_LEN);
+ gnrc_netif_hdr_set_dst_addr(netif_hdr->data, hdr->dst, ETHERNET_ADDR_LEN);
+ ((gnrc_netif_hdr_t *)netif_hdr->data)->if_pid = thread_getpid();
+
+ DEBUG("gnrc_netif2_ethernet: received packet from %02x:%02x:%02x:%02x:%02x:%02x "
+ "of length %d\n",
+ hdr->src[0], hdr->src[1], hdr->src[2], hdr->src[3], hdr->src[4],
+ hdr->src[5], nread);
+#if defined(MODULE_OD) && ENABLE_DEBUG
+ od_hex_dump(hdr, nread, OD_WIDTH_DEFAULT);
+#endif
+
+ gnrc_pktbuf_remove_snip(pkt, eth_hdr);
+ LL_APPEND(pkt, netif_hdr);
+ }
+
+out:
+ return pkt;
+
+safe_out:
+ gnrc_pktbuf_release(pkt);
+ return NULL;
+}
+#else /* MODULE_NETDEV_ETH */
+typedef int dont_be_pedantic;
+#endif /* MODULE_NETDEV_ETH */
+
+/** @} */
--
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