altos: Rename 'core' to 'kernel'

[fw/altos] / src / core / ao_radio_cmac.c

diff --git a/src/core/ao_radio_cmac.c b/src/core/ao_radio_cmac.c
deleted file mode 100644 (file)
index bff848f..0000000
--- a/src/core/ao_radio_cmac.c
+++ /dev/null
@@ -1,164 +0,0 @@
-/*
- * Copyright © 2011 Keith Packard <keithp@keithp.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License along
- * with this program; if not, write to the Free Software Foundation, Inc.,
- * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
- */
-
-#include <ao.h>
-#include <ao_radio_cmac.h>
-
-static __xdata uint8_t ao_radio_cmac_mutex;
-__pdata int8_t ao_radio_cmac_rssi;
-static __xdata uint8_t cmac_data[AO_CMAC_MAX_LEN + AO_CMAC_KEY_LEN + 2 + AO_CMAC_KEY_LEN];
-
-static uint8_t
-round_len(uint8_t len)
-{
-       uint8_t rem;
-
-       /* Make sure we transfer at least one packet, and
-        * then make sure every packet is full. Note that
-        * there is no length encoded, and that the receiver
-        * must deal with any extra bytes in the packet
-        */
-       if (len < AO_CMAC_KEY_LEN)
-               len = AO_CMAC_KEY_LEN;
-       rem = len % AO_CMAC_KEY_LEN;
-       if (rem != 0)
-               len += (AO_CMAC_KEY_LEN - rem);
-       return len;
-}
-
-/*
- * Sign and deliver the data sitting in the cmac buffer
- */
-static void
-radio_cmac_send(uint8_t len) __reentrant
-{
-       uint8_t i;
-
-       len = round_len(len);
-       /* Make sure the AES key is loaded */
-       ao_config_get();
-
-#if HAS_MONITOR
-       ao_monitor_set(0);
-#endif
-
-       ao_mutex_get(&ao_aes_mutex);
-       ao_aes_set_mode(ao_aes_mode_cbc_mac);
-       ao_aes_set_key(ao_config.aes_key);
-       ao_aes_zero_iv();
-       for (i = 0; i < len; i += AO_CMAC_KEY_LEN) {
-               if (i + AO_CMAC_KEY_LEN < len)
-                       ao_aes_run(&cmac_data[i], NULL);
-               else
-                       ao_aes_run(&cmac_data[i], &cmac_data[len]);
-       }
-       ao_mutex_put(&ao_aes_mutex);
-
-       ao_radio_send(cmac_data, len + AO_CMAC_KEY_LEN);
-}
-
-/*
- * Receive and validate an incoming packet
- */
-
-static int8_t
-radio_cmac_recv(uint8_t len, uint16_t timeout) __reentrant
-{
-       uint8_t i;
-
-       len = round_len(len);
-#if HAS_MONITOR
-       ao_monitor_set(0);
-#endif
-       i = ao_radio_recv(cmac_data, len + AO_CMAC_KEY_LEN + 2, timeout);
-
-       if (!i) {
-               ao_radio_cmac_rssi = 0;
-               return AO_RADIO_CMAC_TIMEOUT;
-       }
-
-       ao_radio_cmac_rssi = ao_radio_rssi;
-       if (!(cmac_data[len + AO_CMAC_KEY_LEN +1] & AO_RADIO_STATUS_CRC_OK))
-               return AO_RADIO_CMAC_CRC_ERROR;
-
-       ao_config_get();
-
-       /* Compute the packet signature
-        */
-       ao_mutex_get(&ao_aes_mutex);
-       ao_aes_set_mode(ao_aes_mode_cbc_mac);
-       ao_aes_set_key(ao_config.aes_key);
-       ao_aes_zero_iv();
-       for (i = 0; i < len; i += AO_CMAC_KEY_LEN) {
-               if (i + AO_CMAC_KEY_LEN < len)
-                       ao_aes_run(&cmac_data[i], NULL);
-               else
-                       ao_aes_run(&cmac_data[i], &cmac_data[len + AO_CMAC_KEY_LEN + 2]);
-       }
-       ao_mutex_put(&ao_aes_mutex);
-
-       /* Check the packet signature against the signature provided
-        * over the link
-        */
-        
-       if (memcmp(&cmac_data[len],
-                  &cmac_data[len + AO_CMAC_KEY_LEN + 2],
-                  AO_CMAC_KEY_LEN) != 0) {
-               return AO_RADIO_CMAC_MAC_ERROR;
-       }
-
-       return AO_RADIO_CMAC_OK;
-}
-
-int8_t
-ao_radio_cmac_send(__xdata void *packet, uint8_t len) __reentrant
-{
-       if (len > AO_CMAC_MAX_LEN)
-               return AO_RADIO_CMAC_LEN_ERROR;
-       ao_mutex_get(&ao_radio_cmac_mutex);
-       ao_xmemcpy(cmac_data, packet, len);
-#if AO_LED_TX
-       ao_led_on(AO_LED_TX);
-#endif
-       radio_cmac_send(len);
-#if AO_LED_TX
-       ao_led_off(AO_LED_TX);
-#endif
-       ao_mutex_put(&ao_radio_cmac_mutex);
-       return AO_RADIO_CMAC_OK;
-}
-
-int8_t
-ao_radio_cmac_recv(__xdata void *packet, uint8_t len, uint16_t timeout) __reentrant
-{
-       int8_t  i;
-       if (len > AO_CMAC_MAX_LEN)
-               return AO_RADIO_CMAC_LEN_ERROR;
-       ao_mutex_get(&ao_radio_cmac_mutex);
-#if AO_LED_RX
-       ao_led_on(AO_LED_RX);
-#endif
-       i = radio_cmac_recv(len, timeout);
-#if AO_LED_RX
-       ao_led_off(AO_LED_RX);
-#endif
-       if (i == AO_RADIO_CMAC_OK)
-               ao_xmemcpy(packet, cmac_data, len);
-       ao_mutex_put(&ao_radio_cmac_mutex);
-       return i;
-}
-