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drivers/at86rf2xx: move security logic to netdev
This commit is contained in:
Jose Alamos
parent
99d490a3c1
commit
4708478e98
@ -27,13 +27,9 @@
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#include "kernel_defines.h"
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#include "byteorder.h"
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#include "net/ieee802154.h"
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#if IS_USED(IEEE802154_SECURITY)
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#include "net/ieee802154_security.h"
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#endif
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#include "net/gnrc.h"
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#include "at86rf2xx_registers.h"
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#include "at86rf2xx_internal.h"
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#include "at86rf2xx_netdev.h"
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#if IS_USED(MODULE_AT86RF2XX_AES_SPI)
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#include "at86rf2xx_aes.h"
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#endif
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@ -41,78 +37,6 @@
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#define ENABLE_DEBUG 0
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#include "debug.h"
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#if IS_USED(MODULE_AT86RF2XX_AES_SPI) && \
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IS_USED(MODULE_IEEE802154_SECURITY)
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/**
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* @brief Pass the 802.15.4 encryption key to the transceiver hardware
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*
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* @param[in] dev Abstract security device descriptor
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* @param[in] key Encryption key to be used
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* @param[in] key_size Size of the encryption key in bytes
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*/
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static void _at86rf2xx_set_key(ieee802154_sec_dev_t *dev,
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const uint8_t *key, uint8_t key_size)
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{
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(void)key_size;
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at86rf2xx_aes_key_write_encrypt((at86rf2xx_t *)dev->ctx, key);
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}
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/**
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* @brief Compute CBC-MAC from IEEE 802.15.4 security context
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*
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* @param[in] dev Abstract security device descriptor
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* @param[out] cipher Buffer to store cipher blocks
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* @param[in] iv Initial vector
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* @param[in] plain Input data blocks
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* @param[in] nblocks Number of blocks
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*/
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static void _at86rf2xx_cbc(const ieee802154_sec_dev_t *dev,
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uint8_t *cipher,
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uint8_t *iv,
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const uint8_t *plain,
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uint8_t nblocks)
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{
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at86rf2xx_aes_cbc_encrypt((at86rf2xx_t *)dev->ctx,
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(aes_block_t *)cipher,
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NULL,
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iv,
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(aes_block_t *)plain,
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nblocks);
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}
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/**
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* @brief Perform ECB encryption
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*
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* @param[in] dev Abstract security device descriptor
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* @param[out] cipher Output cipher blocks
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* @param[in] plain Plain blocks
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* @param[in] nblocks Number of blocks
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*/
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static void _at86rf2xx_ecb(const ieee802154_sec_dev_t *dev,
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uint8_t *cipher,
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const uint8_t *plain,
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uint8_t nblocks)
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{
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at86rf2xx_aes_ecb_encrypt((at86rf2xx_t *)dev->ctx,
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(aes_block_t *)cipher,
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NULL,
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(aes_block_t *)plain,
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nblocks);
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}
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/**
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* @brief Struct that contains IEEE 802.15.4 security operations
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* which are implemented, using the transceiver´s hardware
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* crypto capabilities
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*/
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static const ieee802154_radio_cipher_ops_t _at86rf2xx_cipher_ops = {
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.set_key = _at86rf2xx_set_key,
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.ecb = _at86rf2xx_ecb,
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.cbc = _at86rf2xx_cbc
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};
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#endif /* IS_USED(MODULE_AT86RF2XX_AES_SPI) && \
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IS_USED(MODULE_IEEE802154_SECURITY) */
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static void at86rf2xx_disable_clock_output(at86rf2xx_t *dev)
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{
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#if AT86RF2XX_IS_PERIPH
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@ -199,12 +123,6 @@ void at86rf2xx_reset(at86rf2xx_t *dev)
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/* clear interrupt flags */
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at86rf2xx_reg_read(dev, AT86RF2XX_REG__IRQ_STATUS);
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#if IS_USED(MODULE_IEEE802154_SECURITY) && \
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IS_USED(MODULE_AT86RF2XX_AES_SPI)
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dev->netdev.sec_ctx.dev.cipher_ops = &_at86rf2xx_cipher_ops;
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dev->netdev.sec_ctx.dev.ctx = dev;
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#endif
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/* State to return after receiving or transmitting */
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dev->idle_state = AT86RF2XX_PHY_STATE_RX;
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/* go into RX state */
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@ -39,6 +39,9 @@
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#include "at86rf2xx_netdev.h"
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#include "at86rf2xx_internal.h"
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#include "at86rf2xx_registers.h"
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#if IS_USED(IEEE802154_SECURITY)
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#include "net/ieee802154_security.h"
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#endif
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#if IS_USED(MODULE_AT86RF2XX_AES_SPI)
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#include "at86rf2xx_aes.h"
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#endif
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@ -62,6 +65,79 @@ const netdev_driver_t at86rf2xx_driver = {
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.set = _set,
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};
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#if IS_USED(MODULE_AT86RF2XX_AES_SPI) && \
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IS_USED(MODULE_IEEE802154_SECURITY)
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/**
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* @brief Pass the 802.15.4 encryption key to the transceiver hardware
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*
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* @param[in] dev Abstract security device descriptor
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* @param[in] key Encryption key to be used
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* @param[in] key_size Size of the encryption key in bytes
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*/
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static void _at86rf2xx_set_key(ieee802154_sec_dev_t *dev,
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const uint8_t *key, uint8_t key_size)
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{
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(void)key_size;
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at86rf2xx_aes_key_write_encrypt((at86rf2xx_t *)dev->ctx, key);
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}
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/**
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* @brief Compute CBC-MAC from IEEE 802.15.4 security context
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*
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* @param[in] dev Abstract security device descriptor
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* @param[out] cipher Buffer to store cipher blocks
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* @param[in] iv Initial vector
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* @param[in] plain Input data blocks
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* @param[in] nblocks Number of blocks
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*/
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static void _at86rf2xx_cbc(const ieee802154_sec_dev_t *dev,
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uint8_t *cipher,
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uint8_t *iv,
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const uint8_t *plain,
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uint8_t nblocks)
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{
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at86rf2xx_aes_cbc_encrypt((at86rf2xx_t *)dev->ctx,
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(aes_block_t *)cipher,
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NULL,
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iv,
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(aes_block_t *)plain,
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nblocks);
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}
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/**
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* @brief Perform ECB encryption
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*
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* @param[in] dev Abstract security device descriptor
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* @param[out] cipher Output cipher blocks
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* @param[in] plain Plain blocks
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* @param[in] nblocks Number of blocks
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*/
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static void _at86rf2xx_ecb(const ieee802154_sec_dev_t *dev,
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uint8_t *cipher,
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const uint8_t *plain,
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uint8_t nblocks)
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{
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at86rf2xx_aes_ecb_encrypt((at86rf2xx_t *)dev->ctx,
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(aes_block_t *)cipher,
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NULL,
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(aes_block_t *)plain,
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nblocks);
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}
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/**
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* @brief Struct that contains IEEE 802.15.4 security operations
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* which are implemented, using the transceiver´s hardware
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* crypto capabilities
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*/
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static const ieee802154_radio_cipher_ops_t _at86rf2xx_cipher_ops = {
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.set_key = _at86rf2xx_set_key,
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.ecb = _at86rf2xx_ecb,
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.cbc = _at86rf2xx_cbc
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};
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#endif /* IS_USED(MODULE_AT86RF2XX_AES_SPI) && \
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IS_USED(MODULE_IEEE802154_SECURITY) */
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/* SOC has radio interrupts, store reference to netdev */
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static netdev_t *at86rfmega_dev;
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static void _irq_handler(void *arg)
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@ -100,6 +176,12 @@ static int _init(netdev_t *netdev)
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netdev_ieee802154_set(&dev->netdev, NETOPT_ACK_REQ,
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&enable, sizeof(enable));
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}
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#if IS_USED(MODULE_IEEE802154_SECURITY) && \
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IS_USED(MODULE_AT86RF2XX_AES_SPI)
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dev->netdev.sec_ctx.dev.cipher_ops = &_at86rf2xx_cipher_ops;
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dev->netdev.sec_ctx.dev.ctx = dev;
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#endif
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at86rf2xx_reset(dev);
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/* signal link UP */
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