Adding in cc2420 security support codes

[tinyos-2.x.git] / tos / chips / cc2420 / CC2420.h

diff --git a/tos/chips/cc2420/CC2420.h b/tos/chips/cc2420/CC2420.h
index a3413ec2d061721657aa2ac0ee963e2ab0e734a3..bdaefd6b4c5b6cf92a15ad04c0d8ad54af929556 100644 (file)
--- a/tos/chips/cc2420/CC2420.h
+++ b/tos/chips/cc2420/CC2420.h
@@ -43,9 +43,55 @@ typedef uint8_t cc2420_status_t;
 #endif
 
 /**
- * CC2420 header.  An I-frame (interoperability frame) header has an 
- * extra network byte specified by 6LowPAN
+ * CC2420 header definition.
+ * 
+ * An I-frame (interoperability frame) header has an extra network 
+ * byte specified by 6LowPAN
+ * 
+ * Length = length of the header + payload of the packet, minus the size
+ *   of the length byte itself (1).  This is what allows for variable 
+ *   length packets.
+ * 
+ * FCF = Frame Control Field, defined in the 802.15.4 specs and the
+ *   CC2420 datasheet.
+ *
+ * DSN = Data Sequence Number, a number incremented for each packet sent
+ *   by a particular node.  This is used in acknowledging that packet, 
+ *   and also filtering out duplicate packets.
+ *
+ * DestPan = The destination PAN (personal area network) ID, so your 
+ *   network can sit side by side with another TinyOS network and not
+ *   interfere.
+ * 
+ * Dest = The destination address of this packet. 0xFFFF is the broadcast
+ *   address.
+ *
+ * Src = The local node ID that generated the message.
+ * 
+ * Network = The TinyOS network ID, for interoperability with other types
+ *   of 802.15.4 networks. 
+ * 
+ * Type = TinyOS AM type.  When you create a new AMSenderC(AM_MYMSG), 
+ *   the AM_MYMSG definition is the type of packet.
+ * 
+ * TOSH_DATA_LENGTH defaults to 28, it represents the maximum size of 
+ * the payload portion of the packet, and is specified in the 
+ * tos/types/message.h file.
+ *
+ * All of these fields will be filled in automatically by the radio stack 
+ * when you attempt to send a message.
  */
+/**
+ * CC2420 Security Header
+ */
+typedef nx_struct security_header_t {
+  nx_uint8_t secLevel:3;
+  nx_uint8_t keyMode:2;
+  nx_uint8_t reserved:3;
+  nx_uint32_t frameCounter;
+  nx_uint8_t keyID[1]; // One byte for now
+} security_header_t;
+
 typedef nx_struct cc2420_header_t {
   nxle_uint8_t length;
   nxle_uint16_t fcf;
@@ -53,6 +99,10 @@ typedef nx_struct cc2420_header_t {
   nxle_uint16_t destpan;
   nxle_uint16_t dest;
   nxle_uint16_t src;
+
+#ifdef CC2420_HW_SECURITY
+  security_header_t secHdr;
+#endif
   
   /** I-Frame 6LowPAN interoperability byte */
 #ifdef CC2420_IFRAME_TYPE
@@ -64,7 +114,7 @@ typedef nx_struct cc2420_header_t {
 #endif
 
 } cc2420_header_t;
-  
+
 /**
  * CC2420 Packet Footer
  */
@@ -84,7 +134,8 @@ typedef nx_struct cc2420_metadata_t {
   nx_uint8_t tx_power;
   nx_bool crc;
   nx_bool ack;
-  nx_uint16_t time;
+  nx_bool timesync;
+  nx_uint32_t timestamp;
   nx_uint16_t rxInterval;
 
   /** Packet Link Metadata */
@@ -137,6 +188,8 @@ enum {
   MAC_FOOTER_SIZE = sizeof( uint16_t ),
   // MDU
   MAC_PACKET_SIZE = MAC_HEADER_SIZE + TOSH_DATA_LENGTH + MAC_FOOTER_SIZE,
+
+  CC2420_SIZE = MAC_HEADER_SIZE + MAC_FOOTER_SIZE,
 };
 
 enum cc2420_enums {
@@ -369,4 +422,25 @@ enum cc2420_sfdmux_enums {
   CC2420_SFDMUX_XOSC16M_STABLE = 24,
 };
 
+enum cc2420_security_enums{
+  CC2420_NO_SEC = 0,
+  CC2420_CBC_MAC = 1,
+  CC2420_CTR = 2,
+  CC2420_CCM = 3,
+  NO_SEC = 0,
+  CBC_MAC_4 = 1,
+  CBC_MAC_8 = 2,
+  CBC_MAC_16 = 3,
+  CTR = 4,
+  CCM_4 = 5,
+  CCM_8 = 6,
+  CCM_16 = 7
+};
+norace uint8_t SECURITYLOCK = 0;
+
+enum
+{
+  CC2420_INVALID_TIMESTAMP  = 0x80000000L,
+};
+
 #endif