ieee802154.h

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/*
 * Copyright (C) 2015-2019 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.
 */
 
#ifndef NET_IEEE802154_H
#define NET_IEEE802154_H
 
#include <stdint.h>
#include <stdlib.h>
 
#include "byteorder.h"
#include "net/eui64.h"
#include "kernel_defines.h"
 
#ifdef __cplusplus
extern "C" {
#endif
 
#define IEEE802154_SFD                      (0xa7)
 
#define IEEE802154_SHORT_ADDRESS_LEN        (2U)    
#define IEEE802154_LONG_ADDRESS_LEN         (8U)    
#define IEEE802154_MAX_HDR_LEN              (23U)
#define IEEE802154_MIN_FRAME_LEN            (IEEE802154_FCF_LEN + sizeof(uint8_t))
 
#define IEEE802154_FCF_LEN                  (2U)
#define IEEE802154_FCS_LEN                  (2U)
 
#define IEEE802154_FCF_TYPE_MASK            (0x07)
#define IEEE802154_FCF_TYPE_BEACON          (0x00)
#define IEEE802154_FCF_TYPE_DATA            (0x01)
#define IEEE802154_FCF_TYPE_ACK             (0x02)
#define IEEE802154_FCF_TYPE_MACCMD          (0x03)
 
#define IEEE802154_FCF_SECURITY_EN          (0x08)  
#define IEEE802154_FCF_FRAME_PEND           (0x10)  
#define IEEE802154_FCF_ACK_REQ              (0x20)  
#define IEEE802154_FCF_PAN_COMP             (0x40)  
#define IEEE802154_FCF_DST_ADDR_MASK        (0x0c)
#define IEEE802154_FCF_DST_ADDR_VOID        (0x00)  
#define IEEE802154_FCF_DST_ADDR_RESV        (0x04)  
#define IEEE802154_FCF_DST_ADDR_SHORT       (0x08)  
#define IEEE802154_FCF_DST_ADDR_LONG        (0x0c)  
#define IEEE802154_FCF_VERS_MASK            (0x30)
#define IEEE802154_FCF_VERS_V0              (0x00)
#define IEEE802154_FCF_VERS_V1              (0x10)
 
#define IEEE802154_FCF_SRC_ADDR_MASK        (0xc0)
#define IEEE802154_FCF_SRC_ADDR_VOID        (0x00)  
#define IEEE802154_FCF_SRC_ADDR_RESV        (0x40)  
#define IEEE802154_FCF_SRC_ADDR_SHORT       (0x80)  
#define IEEE802154_FCF_SRC_ADDR_LONG        (0xc0)  
#define IEEE802154_CHANNEL_MIN_SUBGHZ   (0U)    
#define IEEE802154_CHANNEL_MAX_SUBGHZ   (10U)   
#define IEEE802154_CHANNEL_MIN          (11U)   
#define IEEE802154_CHANNEL_MAX          (26U)   
#define IEEE802154_FRAME_LEN_MAX        (127U)  
#define IEEE802154G_FRAME_LEN_MAX      (2047U)  
#define IEEE802154_ACK_FRAME_LEN          (5U)  
#define IEEE802154_LIFS_SYMS            (40U)
 
#define IEEE802154_SIFS_SYMS            (12U)
 
#define IEEE802154_SIFS_MAX_FRAME_SIZE  (18U)
 
#define IEEE802154_RADIO_RSSI_OFFSET        (-174)
 
#define IEEE802154_PHY_MR_FSK_PHR_LEN      (2)  
#define IEEE802154_PHY_MR_FSK_2FSK_SFD_LEN (2)  
#define IEEE802154_PHY_MR_FSK_2FSK_CODED_SFD_0      (0x6F4E)
#define IEEE802154_PHY_MR_FSK_2FSK_CODED_SFD_1      (0x632D)
#define IEEE802154_PHY_MR_FSK_2FSK_UNCODED_SFD_0    (0x90E4)
#define IEEE802154_PHY_MR_FSK_2FSK_UNCODED_SFD_1    (0x7A0E)
#define IEEE802154G_ATURNAROUNDTIME_US          (1 * US_PER_MS)
 
#define IEEE802154_ATURNAROUNDTIME_IN_SYMBOLS   (12)
 
#define IEEE802154_CCA_DURATION_IN_SYMBOLS      (8)
 
typedef enum {
    IEEE802154_PHY_DISABLED,        
    IEEE802154_PHY_BPSK,            
    IEEE802154_PHY_ASK,             
    IEEE802154_PHY_OQPSK,           
    IEEE802154_PHY_MR_OQPSK,        
    IEEE802154_PHY_MR_OFDM,         
    IEEE802154_PHY_MR_FSK           
} ieee802154_phy_mode_t;
 
enum {
    IEEE802154_FEC_NONE,            
    IEEE802154_FEC_NRNSC,           
    IEEE802154_FEC_RSC              
};
 
#define IEEE802154_ADDR_BCAST               { 0xff, 0xff }
 
#define IEEE802154_ADDR_BCAST_LEN           (IEEE802154_SHORT_ADDRESS_LEN)
 
extern const uint8_t ieee802154_addr_bcast[IEEE802154_ADDR_BCAST_LEN];
#if IS_ACTIVE(CONFIG_IEEE802154_DEFAULT_PHY_BPSK)
#define CONFIG_IEEE802154_DEFAULT_PHY_MODE          IEEE802154_PHY_BPSK
#elif IS_ACTIVE(CONFIG_IEEE802154_DEFAULT_PHY_ASK)
#define CONFIG_IEEE802154_DEFAULT_PHY_MODE          IEEE802154_PHY_ASK
#elif IS_ACTIVE(CONFIG_IEEE802154_DEFAULT_PHY_OQPSK)
#define CONFIG_IEEE802154_DEFAULT_PHY_MODE          IEEE802154_PHY_OQPSK
#elif IS_ACTIVE(CONFIG_IEEE802154_DEFAULT_PHY_MR_OQPSK)
#define CONFIG_IEEE802154_DEFAULT_PHY_MODE          IEEE802154_PHY_MR_OQPSK
#elif IS_ACTIVE(CONFIG_IEEE802154_DEFAULT_PHY_MR_OFDM)
#define CONFIG_IEEE802154_DEFAULT_PHY_MODE          IEEE802154_PHY_MR_OFDM
#elif IS_ACTIVE(CONFIG_IEEE802154_DEFAULT_PHY_MR_FSK)
#define CONFIG_IEEE802154_DEFAULT_PHY_MODE          IEEE802154_PHY_MR_FSK
#endif
 
#ifndef CONFIG_IEEE802154_DEFAULT_PHY_MODE
#define CONFIG_IEEE802154_DEFAULT_PHY_MODE          IEEE802154_PHY_OQPSK
#endif
#ifndef CONFIG_IEEE802154_DEFAULT_SUBGHZ_CHANNEL
#define CONFIG_IEEE802154_DEFAULT_SUBGHZ_CHANNEL   (5U)
#endif
 
#ifndef CONFIG_IEEE802154_DEFAULT_CHANNEL
#define CONFIG_IEEE802154_DEFAULT_CHANNEL          (26U)
#endif
 
#ifndef CONFIG_IEEE802154_DEFAULT_SUBGHZ_PAGE
#define CONFIG_IEEE802154_DEFAULT_SUBGHZ_PAGE      (2U)
#endif
 
#ifndef CONFIG_IEEE802154_DEFAULT_PANID
#define CONFIG_IEEE802154_DEFAULT_PANID            (0x0023U)
#endif
 
#ifndef IEEE802154_PANID_BCAST
#define IEEE802154_PANID_BCAST              { 0xff, 0xff }
#endif
 
#ifndef CONFIG_IEEE802154_DEFAULT_TXPOWER
#define CONFIG_IEEE802154_DEFAULT_TXPOWER          (0)
#endif
#ifndef CONFIG_IEEE802154_DEFAULT_CSMA_CA_MIN_BE
#define CONFIG_IEEE802154_DEFAULT_CSMA_CA_MIN_BE   (3U)
#endif
 
#ifndef CONFIG_IEEE802154_DEFAULT_CSMA_CA_RETRIES
#define CONFIG_IEEE802154_DEFAULT_CSMA_CA_RETRIES  (4U)
#endif
 
#ifndef CONFIG_IEEE802154_DEFAULT_CSMA_CA_MAX_BE
#define CONFIG_IEEE802154_DEFAULT_CSMA_CA_MAX_BE   (5U)
#endif
 
#ifndef CONFIG_IEEE802154_CCA_THRESH_DEFAULT
#define CONFIG_IEEE802154_CCA_THRESH_DEFAULT       (-70)
#endif
 
#ifdef DOXYGEN
#define CONFIG_IEEE802154_AUTO_ACK_DISABLE 0
#endif
 
size_t ieee802154_set_frame_hdr(uint8_t *buf, const uint8_t *src, size_t src_len,
                                const uint8_t *dst, size_t dst_len,
                                le_uint16_t src_pan, le_uint16_t dst_pan,
                                uint8_t flags, uint8_t seq);
 
size_t ieee802154_get_frame_hdr_len(const uint8_t *mhr);
 
int ieee802154_get_src(const uint8_t *mhr, uint8_t *src, le_uint16_t *src_pan);
 
int ieee802154_get_dst(const uint8_t *mhr, uint8_t *dst, le_uint16_t *dst_pan);
 
int ieee802154_dst_filter(const uint8_t *mhr, uint16_t pan,
                          network_uint16_t short_addr, const eui64_t *ext_addr);
 
static inline uint8_t ieee802154_get_seq(const uint8_t *mhr)
{
    return mhr[2];
}
 
static inline eui64_t *ieee802154_get_iid(eui64_t *eui64, const uint8_t *addr,
                                          size_t addr_len)
{
    int i = 0;
 
    eui64->uint8[0] = eui64->uint8[1] = 0;
 
    switch (addr_len) {
        case 8:
            eui64->uint8[0] = addr[i++] ^ 0x02;
            eui64->uint8[1] = addr[i++];
            eui64->uint8[2] = addr[i++];
            eui64->uint8[3] = addr[i++];
            eui64->uint8[4] = addr[i++];
            eui64->uint8[5] = addr[i++];
            eui64->uint8[6] = addr[i++];
            eui64->uint8[7] = addr[i++];
            break;
 
        case 4:
            eui64->uint8[0] = addr[i++] ^ 0x02;
            eui64->uint8[1] = addr[i++];
 
            /* Falls through. */
        case 2:
            eui64->uint8[2] = 0;
            eui64->uint8[3] = 0xff;
            eui64->uint8[4] = 0xfe;
            eui64->uint8[5] = 0;
            eui64->uint8[6] = addr[i++];
            eui64->uint8[7] = addr[i++];
            break;
 
        default:
            return NULL;
    }
 
    return eui64;
}
 
static inline int16_t ieee802154_rssi_to_dbm(uint8_t rssi)
{
    return rssi + IEEE802154_RADIO_RSSI_OFFSET;
}
 
static inline uint8_t ieee802154_dbm_to_rssi(int16_t dbm)
{
    const int min = IEEE802154_RADIO_RSSI_OFFSET;
    const int max = min + (UINT8_MAX - 1);
 
    int val = dbm <= min ? min : (dbm >= max ? max : dbm);
    return val - IEEE802154_RADIO_RSSI_OFFSET;
}
 
#ifdef __cplusplus
}
#endif
 
#endif /* NET_IEEE802154_H */