michaelh/zephyr
1
0
Fork 0
Code Releases Activity

drivers: ieee802154: add support for secured transmission in nRF5

Browse source 
Configure radio driver with MAC key pairs and frame counter.

Signed-off-by: Lukasz Maciejonczyk <lukasz.maciejonczyk@nordicsemi.no>
This commit is contained in:
Lukasz Maciejonczyk 2021-05-18 14:41:39 +02:00 • committed by Anas Nashif
commit fa1407129d
1 changed files with 49 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

49
drivers/ieee802154/ieee802154_nrf5.c
View file

@ -41,6 +41,7 @@ LOG_MODULE_REGISTER(LOG_MODULE_NAME);
#include "ieee802154_nrf5.h"
#include "nrf_802154.h"
#include "nrf_802154_const.h"
#if defined(CONFIG_NRF_802154_SER_HOST)
#include "nrf_802154_serialization_error.h"
@ -654,6 +655,43 @@ static void nrf5_iface_init(struct net_if *iface)
ieee802154_init(iface);
}
#if defined(CONFIG_NRF_802154_ENCRYPTION)
static void nrf5_config_mac_keys(struct ieee802154_key *mac_keys)
{
nrf_802154_security_error_t err;
nrf_802154_key_t key;
uint8_t key_id_to_remove;
__ASSERT(mac_keys, "Invalid argument.");
/* Remove old invalid key assuming that its index is first_valid_key_id - 1.
* TODO: This is Thread specific assumption, need to be changed when RD will provided
* API for removing all keys or handling this internally.
*/
key_id_to_remove = mac_keys->key_index == 1 ? 0x80 : mac_keys->key_index - 1;
key.id.mode = mac_keys->key_id_mode;
key.id.p_key_id = &key_id_to_remove;
nrf_802154_security_key_remove(&key.id);
for (struct ieee802154_key *keys = mac_keys; keys->key_value; keys++) {
key.value.p_cleartext_key = keys->key_value;
key.id.mode = keys->key_id_mode;
key.id.p_key_id = &(keys->key_index);
key.type = NRF_802154_KEY_CLEARTEXT;
key.frame_counter = 0;
key.use_global_frame_counter = !(keys->frame_counter_per_key);
nrf_802154_security_key_remove(&key.id);
err = nrf_802154_security_key_store(&key);
__ASSERT(err == NRF_802154_SECURITY_ERROR_NONE ||
err == NRF_802154_SECURITY_ERROR_ALREADY_PRESENT,
"Storing key failed, err: %d", err);
};
}
#endif /* CONFIG_NRF_802154_ENCRYPTION */
static int nrf5_configure(const struct device *dev,
enum ieee802154_config_type type,
const struct ieee802154_config *config)
@ -716,6 +754,17 @@ static int nrf5_configure(const struct device *dev,
case IEEE802154_CONFIG_EVENT_HANDLER:
nrf5_data.event_handler = config->event_handler;
break;
#if defined(CONFIG_NRF_802154_ENCRYPTION)
case IEEE802154_CONFIG_MAC_KEYS:
nrf5_config_mac_keys(config->mac_keys);
break;
case IEEE802154_CONFIG_FRAME_COUNTER:
nrf_802154_security_global_frame_counter_set(config->frame_counter);
break;
#endif /* CONFIG_NRF_802154_ENCRYPTION */
default:
return -EINVAL;