net: added packet header

sys/include/net/packet.h

@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2015 INRIA
+ *
+ * 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_packet Packet interface on device level
+ * @ingroup     net
+ * @brief       Packet address family definitions
+ * @{
+ *
+ * @file
+ * @brief   Defines the struct for @ref AF_PACKET sockets
+ *
+ * @author  Oliver Hahm <oliver.hahm@inria.fr>
+ */
+
+#ifndef PACKET_H
+#define PACKET_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/**
+ * @brief Link-Layer socket descriptor
+ */
+struct sockaddr_ll {
+    unsigned short sll_family;   /**< Always AF_PACKET */
+    unsigned short sll_protocol; /**< Physical-layer protocol */
+    int            sll_ifindex;  /**< Interface number */
+    unsigned short sll_hatype;   /**< ARP hardware type */
+    unsigned char  sll_pkttype;  /**< Packet type */
+    unsigned char  sll_halen;    /**< Length of address */
+    unsigned char  sll_addr[8];  /**< Physical-layer address */
+};
+
+#ifdef __cplusplus
+}
+#endif
+
+/**
+ * @}
+ */
+#endif /* PACKET_H */