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Diffstat (limited to 'include/linux/ieee802154.h')
-rw-r--r--include/linux/ieee802154.h42
1 files changed, 42 insertions, 0 deletions
diff --git a/include/linux/ieee802154.h b/include/linux/ieee802154.h
index 6e50a2a1d485..6e82d888287c 100644
--- a/include/linux/ieee802154.h
+++ b/include/linux/ieee802154.h
@@ -24,10 +24,24 @@
#define LINUX_IEEE802154_H
#include <linux/types.h>
+#include <linux/random.h>
+#include <asm/byteorder.h>
#define IEEE802154_MTU 127
#define IEEE802154_MIN_PSDU_LEN 5
+#define IEEE802154_PAN_ID_BROADCAST 0xffff
+#define IEEE802154_ADDR_SHORT_BROADCAST 0xffff
+#define IEEE802154_ADDR_SHORT_UNSPEC 0xfffe
+
+#define IEEE802154_EXTENDED_ADDR_LEN 8
+
+#define IEEE802154_LIFS_PERIOD 40
+#define IEEE802154_SIFS_PERIOD 12
+
+#define IEEE802154_MAX_CHANNEL 26
+#define IEEE802154_MAX_PAGE 31
+
#define IEEE802154_FC_TYPE_BEACON 0x0 /* Frame is beacon */
#define IEEE802154_FC_TYPE_DATA 0x1 /* Frame is data */
#define IEEE802154_FC_TYPE_ACK 0x2 /* Frame is acknowledgment */
@@ -197,4 +211,32 @@ static inline bool ieee802154_is_valid_psdu_len(const u8 len)
return (len >= IEEE802154_MIN_PSDU_LEN && len <= IEEE802154_MTU);
}
+/**
+ * ieee802154_is_valid_psdu_len - check if extended addr is valid
+ * @addr: extended addr to check
+ */
+static inline bool ieee802154_is_valid_extended_addr(const __le64 addr)
+{
+ /* These EUI-64 addresses are reserved by IEEE. 0xffffffffffffffff
+ * is used internally as extended to short address broadcast mapping.
+ * This is currently a workaround because neighbor discovery can't
+ * deal with short addresses types right now.
+ */
+ return ((addr != cpu_to_le64(0x0000000000000000ULL)) &&
+ (addr != cpu_to_le64(0xffffffffffffffffULL)));
+}
+
+/**
+ * ieee802154_random_extended_addr - generates a random extended address
+ * @addr: extended addr pointer to place the random address
+ */
+static inline void ieee802154_random_extended_addr(__le64 *addr)
+{
+ get_random_bytes(addr, IEEE802154_EXTENDED_ADDR_LEN);
+
+ /* toggle some bit if we hit an invalid extended addr */
+ if (!ieee802154_is_valid_extended_addr(*addr))
+ ((u8 *)addr)[IEEE802154_EXTENDED_ADDR_LEN - 1] ^= 0x01;
+}
+
#endif /* LINUX_IEEE802154_H */