499 lines
12 KiB
C
499 lines
12 KiB
C
/*
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* Copyright (c) 2016 Intel Corporation.
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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/**
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* @file
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* @brief IEEE 802.15.4 Frame API header
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*/
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#ifndef __IEEE802154_FRAME_H__
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#define __IEEE802154_FRAME_H__
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#include <kernel.h>
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#include <net/net_pkt.h>
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#include <net/ieee802154.h>
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#define IEEE802154_MTU 127
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#define IEEE802154_MIN_LENGTH 3
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/* See Section 5.2.1.4 */
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#define IEEE802154_BROADCAST_ADDRESS 0xFFFF
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#define IEEE802154_BROADCAST_PAN_ID 0xFFFF
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/* ACK packet size is the minimum size, see Section 5.2.2.3 */
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#define IEEE802154_ACK_PKT_LENGTH IEEE802154_MIN_LENGTH
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#define IEEE802154_MFR_LENGTH 2
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#define IEEE802154_EXT_ADDR_LENGTH 8
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#define IEEE802154_SHORT_ADDR_LENGTH 2
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#define IEEE802154_SIMPLE_ADDR_LENGTH 1
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#define IEEE802154_PAN_ID_LENGTH 2
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#define IEEE802154_BEACON_MIN_SIZE 4
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#define IEEE802154_BEACON_SF_SIZE 2
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#define IEEE802154_BEACON_GTS_SPEC_SIZE 1
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#define IEEE802154_BEACON_GTS_IF_MIN_SIZE IEEE802154_BEACON_GTS_SPEC_SIZE
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#define IEEE802154_BEACON_PAS_SPEC_SIZE 1
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#define IEEE802154_BEACON_PAS_IF_MIN_SIZE IEEE802154_BEACON_PAS_SPEC_SIZE
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#define IEEE802154_BEACON_GTS_DIR_SIZE 1
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#define IEEE802154_BEACON_GTS_SIZE 3
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#define IEEE802154_BEACON_GTS_RX 1
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#define IEEE802154_BEACON_GTS_TX 0
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/* See Section 5.2.1.1.1 */
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enum ieee802154_frame_type {
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IEEE802154_FRAME_TYPE_BEACON = 0x0,
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IEEE802154_FRAME_TYPE_DATA = 0x1,
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IEEE802154_FRAME_TYPE_ACK = 0x2,
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IEEE802154_FRAME_TYPE_MAC_COMMAND = 0x3,
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IEEE802154_FRAME_TYPE_LLDN = 0x4,
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IEEE802154_FRAME_TYPE_MULTIPURPOSE = 0x5,
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IEEE802154_FRAME_TYPE_RESERVED = 0x6,
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};
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/* See Section 5.2.1.1.6 */
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enum ieee802154_addressing_mode {
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IEEE802154_ADDR_MODE_NONE = 0x0,
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IEEE802154_ADDR_MODE_SIMPLE = 0x1,
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IEEE802154_ADDR_MODE_SHORT = 0x2,
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IEEE802154_ADDR_MODE_EXTENDED = 0x3,
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};
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/** Versions 2003/2006 do no support simple addressing mode */
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#define IEEE802154_ADDR_MODE_RESERVED IEEE802154_ADDR_MODE_SIMPLE
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/* See Section 5.2.1.1.7 */
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enum ieee802154_version {
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IEEE802154_VERSION_802154_2003 = 0x0,
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IEEE802154_VERSION_802154_2006 = 0x1,
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IEEE802154_VERSION_802154 = 0x2,
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IEEE802154_VERSION_RESERVED = 0x3,
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};
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/*
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* Frame Control Field and sequence number
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* See Section 5.2.1.1
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*/
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struct ieee802154_fcf_seq {
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struct {
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#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
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u16_t frame_type :3;
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u16_t security_enabled :1;
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u16_t frame_pending :1;
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u16_t ar :1;
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u16_t pan_id_comp :1;
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u16_t reserved :1;
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u16_t seq_num_suppr :1;
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u16_t ie_list :1;
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u16_t dst_addr_mode :2;
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u16_t frame_version :2;
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u16_t src_addr_mode :2;
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#elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
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u16_t reserved :1;
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u16_t pan_id_comp :1;
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u16_t ar :1;
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u16_t frame_pending :1;
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u16_t security_enabled :1;
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u16_t frame_type :3;
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u16_t src_addr_mode :2;
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u16_t frame_version :2;
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u16_t dst_addr_mode :2;
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u16_t ie_list :1;
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u16_t seq_num_suppr :1;
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#endif
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} fc __packed;
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u8_t sequence;
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} __packed;
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struct ieee802154_address {
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union {
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u8_t simple_addr;
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u16_t short_addr;
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u8_t ext_addr[0];
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};
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} __packed;
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struct ieee802154_address_field_comp {
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struct ieee802154_address addr;
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} __packed;
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struct ieee802154_address_field_plain {
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u16_t pan_id;
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struct ieee802154_address addr;
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} __packed;
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struct ieee802154_address_field {
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union {
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struct ieee802154_address_field_plain plain;
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struct ieee802154_address_field_comp comp;
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};
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} __packed;
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/* See Section 7.4.1.1 */
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enum ieee802154_security_level {
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IEEE802154_SECURITY_LEVEL_NONE = 0x0,
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IEEE802154_SECURITY_LEVEL_MIC_32 = 0x1,
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IEEE802154_SECURITY_LEVEL_MIC_64 = 0x2,
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IEEE802154_SECURITY_LEVEL_MIC_128 = 0x3,
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IEEE802154_SECURITY_LEVEL_ENC = 0x4,
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IEEE802154_SECURITY_LEVEL_ENC_MIC_32 = 0x5,
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IEEE802154_SECURITY_LEVEL_ENC_MIC_64 = 0x6,
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IEEE802154_SECURITY_LEVEL_ENC_MIC_128 = 0x7,
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};
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/* This will match above *_MIC_<32/64/128> */
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#define IEEE8021254_AUTH_TAG_LENGTH_32 4
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#define IEEE8021254_AUTH_TAG_LENGTH_64 8
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#define IEEE8021254_AUTH_TAG_LENGTH_128 16
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/* See Section 7.4.1.2 */
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enum ieee802154_key_id_mode {
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IEEE802154_KEY_ID_MODE_IMPLICIT = 0x0,
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IEEE802154_KEY_ID_MODE_INDEX = 0x1,
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IEEE802154_KEY_ID_MODE_SRC_4_INDEX = 0x2,
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IEEE802154_KEY_ID_MODE_SRC_8_INDEX = 0x3,
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};
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#define IEEE8021254_KEY_ID_FIELD_INDEX_LENGTH 1
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#define IEEE8021254_KEY_ID_FIELD_SRC_4_INDEX_LENGTH 5
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#define IEEE8021254_KEY_ID_FIELD_SRC_8_INDEX_LENGTH 9
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#define IEEE802154_KEY_MAX_LEN 16
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/* See Section 7.4.1 */
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struct ieee802154_security_control_field {
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#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
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u8_t security_level :3;
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u8_t key_id_mode :2;
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u8_t reserved :3;
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#elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
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u8_t reserved :3;
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u8_t key_id_mode :2;
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u8_t security_level :3;
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#endif
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} __packed;
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#define IEEE802154_SECURITY_CF_LENGTH 1
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/* See Section 7.4.3 */
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struct ieee802154_key_identifier_field {
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union {
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/* mode_0 being implicit, it holds no info here */
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struct {
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u8_t key_index;
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} mode_1;
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struct {
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u8_t key_src[4];
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u8_t key_index;
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} mode_2;
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struct {
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u8_t key_src[8];
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u8_t key_index;
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} mode_3;
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};
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} __packed;
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/*
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* Auxiliary Security Header
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* See Section 7.4
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*/
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struct ieee802154_aux_security_hdr {
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struct ieee802154_security_control_field control;
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u32_t frame_counter;
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struct ieee802154_key_identifier_field kif;
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} __packed;
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#define IEEE802154_SECURITY_FRAME_COUNTER_LENGTH 4
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/** MAC header */
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struct ieee802154_mhr {
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struct ieee802154_fcf_seq *fs;
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struct ieee802154_address_field *dst_addr;
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struct ieee802154_address_field *src_addr;
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#ifdef CONFIG_NET_L2_IEEE802154_SECURITY
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struct ieee802154_aux_security_hdr *aux_sec;
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#endif
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};
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struct ieee802154_mfr {
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u16_t fcs;
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};
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struct ieee802154_gts_dir {
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#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
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u8_t mask : 7;
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u8_t reserved : 1;
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#elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
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u8_t reserved : 1;
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u8_t mask : 7;
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#endif
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} __packed;
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struct ieee802154_gts {
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u16_t short_address;
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#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
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u8_t starting_slot : 4;
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u8_t length : 4;
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#elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
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u8_t length : 4;
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u8_t starting_slot : 4;
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#endif
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} __packed;
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struct ieee802154_gts_spec {
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#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
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/* Descriptor Count */
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u8_t desc_count : 3;
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u8_t reserved : 4;
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/* GTS Permit */
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u8_t permit : 1;
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#elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
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/* GTS Permit */
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u8_t permit : 1;
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u8_t reserved : 4;
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/* Descriptor Count */
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u8_t desc_count : 3;
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#endif
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} __packed;
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struct ieee802154_pas_spec {
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#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
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/* Number of Short Addresses Pending */
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u8_t nb_sap : 3;
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u8_t reserved_1 : 1;
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/* Number of Extended Addresses Pending */
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u8_t nb_eap : 3;
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u8_t reserved_2 : 1;
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#elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
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u8_t reserved_1 : 1;
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/* Number of Extended Addresses Pending */
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u8_t nb_eap : 3;
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u8_t reserved_2 : 1;
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/* Number of Short Addresses Pending */
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u8_t nb_sap : 3;
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#endif
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} __packed;
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struct ieee802154_beacon_sf {
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#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
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/* Beacon Order*/
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u16_t bc_order : 4;
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/* Superframe Order*/
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u16_t sf_order : 4;
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/* Final CAP Slot */
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u16_t cap_slot : 4;
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/* Battery Life Extension */
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u16_t ble : 1;
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u16_t reserved : 1;
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/* PAN Coordinator */
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u16_t coordinator : 1;
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/* Association Permit */
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u16_t association : 1;
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#elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
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/* Superframe Order*/
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u16_t sf_order : 4;
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/* Beacon Order*/
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u16_t bc_order : 4;
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/* Association Permit */
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u16_t association : 1;
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/* PAN Coordinator */
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u16_t coordinator : 1;
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u16_t reserved : 1;
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/* Battery Life Extension */
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u16_t ble : 1;
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/* Final CAP Slot */
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u16_t cap_slot : 4;
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#endif
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} __packed;
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struct ieee802154_beacon {
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struct ieee802154_beacon_sf sf;
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/* GTS Fields - Spec is always there */
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struct ieee802154_gts_spec gts;
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} __packed;
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/* See Section 5.3.1 */
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struct ieee802154_cmd_assoc_req {
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struct {
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#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
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u8_t reserved_1 : 1;
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u8_t dev_type : 1;
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u8_t power_src : 1;
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u8_t rx_on : 1;
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u8_t reserved_2 : 2;
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u8_t sec_capability : 1;
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u8_t alloc_addr : 1;
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#elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
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u8_t alloc_addr : 1;
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u8_t sec_capability : 1;
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u8_t reserved_2 : 2;
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u8_t rx_on : 1;
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u8_t power_src : 1;
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u8_t dev_type : 1;
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u8_t reserved_1 : 1;
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#endif
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} ci;
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} __packed;
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/* See Section 5.3.2 */
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enum ieee802154_association_status_field {
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IEEE802154_ASF_SUCCESSFUL = 0x00,
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IEEE802154_ASF_PAN_AT_CAPACITY = 0x01,
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IEEE802154_ASF_PAN_ACCESS_DENIED = 0x02,
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IEEE802154_ASF_RESERVED = 0x03,
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IEEE802154_ASF_RESERVED_PRIMITIVES = 0x80,
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};
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struct ieee802154_cmd_assoc_res {
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u16_t short_addr;
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u8_t status;
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} __packed;
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/* See Section 5.3.3 */
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enum ieee802154_disassociation_reason_field {
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IEEE802154_DRF_RESERVED_1 = 0x00,
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IEEE802154_DRF_COORDINATOR_WISH = 0x01,
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IEEE802154_DRF_DEVICE_WISH = 0x02,
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IEEE802154_DRF_RESERVED_2 = 0x03,
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IEEE802154_DRF_RESERVED_PRIMITIVES = 0x80,
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};
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struct ieee802154_cmd_disassoc_note {
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u8_t reason;
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} __packed;
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/* See Section 5.3.8 */
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struct ieee802154_cmd_coord_realign {
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u16_t pan_id;
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u16_t coordinator_short_addr;
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u8_t channel;
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u16_t short_addr;
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u8_t channel_page; /* Optional */
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} __packed;
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/* See Section 5.3.9 */
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struct ieee802154_gts_request {
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struct {
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#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
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u8_t length : 4;
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u8_t direction : 1;
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u8_t type : 1;
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u8_t reserved : 2;
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#elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
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u8_t reserved : 2;
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u8_t type : 1;
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u8_t direction : 1;
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u8_t length : 4;
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#endif
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} gts;
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} __packed;
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/* See Section 5.3 */
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enum ieee802154_cfi {
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IEEE802154_CFI_UNKNOWN = 0x00,
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IEEE802154_CFI_ASSOCIATION_REQUEST = 0x01,
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IEEE802154_CFI_ASSOCIATION_RESPONSE = 0x02,
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IEEE802154_CFI_DISASSOCIATION_NOTIFICATION = 0x03,
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IEEE802154_CFI_DATA_REQUEST = 0x04,
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IEEE802154_CFI_PAN_ID_CONLICT_NOTIFICATION = 0x05,
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IEEE802154_CFI_ORPHAN_NOTIFICATION = 0x06,
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IEEE802154_CFI_BEACON_REQUEST = 0x07,
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IEEE802154_CFI_COORDINATOR_REALIGNEMENT = 0x08,
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IEEE802154_CFI_GTS_REQUEST = 0x09,
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IEEE802154_CFI_RESERVED = 0x0a,
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};
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struct ieee802154_command {
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u8_t cfi;
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union {
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struct ieee802154_cmd_assoc_req assoc_req;
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struct ieee802154_cmd_assoc_res assoc_res;
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struct ieee802154_cmd_disassoc_note disassoc_note;
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struct ieee802154_cmd_coord_realign coord_realign;
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struct ieee802154_gts_request gts_request;
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/* Data request, PAN ID conflict, Orphan notification
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* or Beacon request do not provide more than the CIF.
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*/
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};
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} __packed;
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/** Frame */
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struct ieee802154_mpdu {
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struct ieee802154_mhr mhr;
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union {
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void *payload;
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struct ieee802154_beacon *beacon;
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struct ieee802154_command *command;
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};
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struct ieee802154_mfr *mfr;
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} __packed;
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/** Frame build parameters */
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struct ieee802154_frame_params {
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struct {
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union {
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u8_t *ext_addr;
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u16_t short_addr;
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};
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u16_t len;
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u16_t pan_id;
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} dst;
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u16_t short_addr;
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u16_t pan_id;
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} __packed;
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#ifdef CONFIG_NET_L2_IEEE802154_SECURITY
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struct ieee802154_aux_security_hdr *
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ieee802154_validate_aux_security_hdr(u8_t *buf, u8_t **p_buf);
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#endif
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struct ieee802154_fcf_seq *ieee802154_validate_fc_seq(u8_t *buf, u8_t **p_buf);
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bool ieee802154_validate_frame(u8_t *buf, u8_t length,
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struct ieee802154_mpdu *mpdu);
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u8_t ieee802154_compute_header_size(struct net_if *iface,
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struct in6_addr *dst);
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bool ieee802154_create_data_frame(struct ieee802154_context *ctx,
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struct net_linkaddr *dst,
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struct net_buf *frag,
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u8_t hdr_size);
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struct net_pkt *
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ieee802154_create_mac_cmd_frame(struct ieee802154_context *ctx,
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enum ieee802154_cfi type,
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struct ieee802154_frame_params *params);
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void ieee802154_mac_cmd_finalize(struct net_pkt *pkt,
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enum ieee802154_cfi type);
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static inline
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struct ieee802154_command *ieee802154_get_mac_command(struct net_pkt *pkt)
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{
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return (struct ieee802154_command *)(pkt->frags->data +
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pkt->frags->len);
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}
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#ifdef CONFIG_NET_L2_IEEE802154_ACK_REPLY
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bool ieee802154_create_ack_frame(struct net_if *iface,
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struct net_pkt *pkt, u8_t seq);
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#endif
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#ifdef CONFIG_NET_L2_IEEE802154_SECURITY
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bool ieee802154_decipher_data_frame(struct net_if *iface, struct net_pkt *pkt,
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struct ieee802154_mpdu *mpdu);
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#else
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#define ieee802154_decipher_data_frame(...) true
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#endif /* CONFIG_NET_L2_IEEE802154_SECURITY */
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#endif /* __IEEE802154_FRAME_H__ */
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