/*********************************************************************
   PicoTCP. Copyright (c) 2012-2017 Altran Intelligent Systems. Some rights reserved.
   See COPYING, LICENSE.GPLv2 and LICENSE.GPLv3 for usage.

 *********************************************************************/
#ifndef INCLUDE_PICO_ADDRESSING
#define INCLUDE_PICO_ADDRESSING

#include "pico_config.h"
#include "pico_constants.h"

PACKED_STRUCT_DEF pico_ip4
{
    uint32_t addr;
};

PACKED_STRUCT_DEF pico_ip6
{
    uint8_t addr[16];
};

union pico_address
{
    struct pico_ip4 ip4;
    struct pico_ip6 ip6;
};

/******************************************************************************
 *  Ethernet Address Definitions
 ******************************************************************************/

PACKED_STRUCT_DEF pico_eth
{
    uint8_t addr[6];
    uint8_t padding[2];
};

extern const uint8_t PICO_ETHADDR_ALL[];

/******************************************************************************
 *  Generic 6LoWPAN Address Definitions
 ******************************************************************************/

/* 6lowpan supports 16-bit short addresses */
PACKED_STRUCT_DEF pico_6lowpan_short
{
    uint16_t addr;
};

/* And also EUI-64 addresses */
PACKED_STRUCT_DEF pico_6lowpan_ext
{
    uint8_t addr[8];
};

/* Address memory as either a short 16-bit address or a 64-bit address */
union pico_6lowpan_u
{
    uint8_t data[8];
    struct pico_6lowpan_short _short;
    struct pico_6lowpan_ext _ext;
};

/* Info data structure to pass to pico_device_init by the device driver */
struct pico_6lowpan_info
{
    struct pico_6lowpan_short addr_short;
    struct pico_6lowpan_ext addr_ext;
    struct pico_6lowpan_short pan_id;
};

/* Different addressing modes for IEEE802.15.4 addresses */
#define AM_6LOWPAN_NONE      (0u)
#define AM_6LOWPAN_RES       (1u)
#define AM_6LOWPAN_SHORT     (2u)
#define AM_6LOWPAN_EXT       (3u)
#define SIZE_6LOWPAN_SHORT   (2u)
#define SIZE_6LOWPAN_EXT     (8u)
#define SIZE_6LOWPAN(m) (((m) == 2) ? (2) : (((m) == 3) ? (8) : (0)))

/******************************************************************************
 *  Generic 6LoWPAN Address Definitions
 ******************************************************************************/

/* Storage data structure for IEEE802.15.4 addresses */
struct pico_802154
{
    union pico_6lowpan_u addr;
    uint8_t mode;
};

/******************************************************************************
 *  Link Layer addresses
 ******************************************************************************/

#define IID_16(iid) (0 == (iid)[2] && 0xff == (iid)[3] && 0xfe == (iid)[4] && 0 == (iid)[5])

enum pico_ll_mode
{
    LL_MODE_ETHERNET = 0,
#ifdef PICO_SUPPORT_802154
    LL_MODE_IEEE802154,
#endif
};

union pico_ll_addr
{
    struct pico_eth eth;
    struct pico_802154 pan;
};

PACKED_STRUCT_DEF pico_trans
{
    uint16_t sport;
    uint16_t dport;
};

/* Here are some protocols. */
#define PICO_PROTO_IPV4   0
#define PICO_PROTO_ICMP4  1
#define PICO_PROTO_IGMP  2
#define PICO_PROTO_TCP    6
#define PICO_PROTO_UDP    17
#define PICO_PROTO_IPV6   41
#define PICO_PROTO_ICMP6  58

#endif