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net/ieee802154: Add Auxiliary Security Header definitions

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These will be used to parse and create 802.15.4 frames with security
enabled.

Change-Id: Icad214c8d7aa658b8483bf601b091b266e1b8d77
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>
This commit is contained in:
Tomasz Bursztyka 2017-01-17 10:12:38 +01:00
parent d593914b17
commit e089f14427
1 changed files with 79 additions and 0 deletions
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79
subsys/net/ip/l2/ieee802154/ieee802154_frame.h
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@ -130,11 +130,90 @@ struct ieee802154_address_field {
};
} __packed;
/* See Section 7.4.1.1 */
enum ieee802154_security_level {
IEEE802154_SECURITY_LEVEL_NONE = 0x0,
IEEE802154_SECURITY_LEVEL_MIC_32 = 0x1,
IEEE802154_SECURITY_LEVEL_MIC_64 = 0x2,
IEEE802154_SECURITY_LEVEL_MIC_128 = 0x3,
IEEE802154_SECURITY_LEVEL_ENC = 0x4,
IEEE802154_SECURITY_LEVEL_ENC_MIC_32 = 0x5,
IEEE802154_SECURITY_LEVEL_ENC_MIC_64 = 0x6,
IEEE802154_SECURITY_LEVEL_ENC_MIC_128 = 0x7,
};
/* This will match above *_MIC_<32/64/128> */
#define IEEE8021254_AUTH_TAG_LENGTH_32 4
#define IEEE8021254_AUTH_TAG_LENGTH_64 8
#define IEEE8021254_AUTH_TAG_LENGTH_128 16
/* See Section 7.4.1.2 */
enum ieee802154_key_id_mode {
IEEE802154_KEY_ID_MODE_IMPLICIT = 0x0,
IEEE802154_KEY_ID_MODE_INDEX = 0x1,
IEEE802154_KEY_ID_MODE_SRC_4_INDEX = 0x2,
IEEE802154_KEY_ID_MODE_SRC_8_INDEX = 0x3,
};
#define IEEE8021254_KEY_ID_FIELD_INDEX_LENGTH 1
#define IEEE8021254_KEY_ID_FIELD_SRC_4_INDEX_LENGTH 5
#define IEEE8021254_KEY_ID_FIELD_SRC_8_INDEX_LENGTH 9
#define IEEE802154_KEY_MAX_LEN 16
/* See Section 7.4.1 */
struct ieee802154_security_control_field {
#if __BYTE_ORDER__ == __ORDER_LITTLE_ENDIAN__
uint8_t security_level :3;
uint8_t key_id_mode :2;
uint8_t reserved :3;
#elif __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
uint8_t reserved :3;
uint8_t key_id_mode :2;
uint8_t security_level :3;
#endif
} __packed;
#define IEEE802154_SECURITY_CF_LENGTH 1
/* See Section 7.4.3 */
struct ieee802154_key_identifier_field {
union {
/* mode_0 being implicit, it holds no info here */
struct {
uint8_t key_index;
} mode_1;
struct {
uint8_t key_src[4];
uint8_t key_index;
} mode_2;
struct {
uint8_t key_src[8];
uint8_t key_index;
} mode_3;
};
} __packed;
/*
* Auxiliary Security Header
* See Section 7.4
*/
struct ieee802154_aux_security_hdr {
struct ieee802154_security_control_field control;
uint32_t frame_counter;
struct ieee802154_key_identifier_field kif;
} __packed;
#define IEEE802154_SECURITY_FRAME_COUNTER_LENGTH 4
/** MAC header */
struct ieee802154_mhr {
struct ieee802154_fcf_seq *fs;
struct ieee802154_address_field *dst_addr;
struct ieee802154_address_field *src_addr;
struct ieee802154_aux_security_hdr *aux_sec;
};
struct ieee802154_mfr {