ieee802154: change needed headroom/tailroom

[deliverable/linux.git] / include / linux / ieee802154.h

diff --git a/include/linux/ieee802154.h b/include/linux/ieee802154.h
index db01492814d31340b8825e231da6a130a3ebf10d..205ce4e1ac320eea4ffb224a3cee6284dab6850d 100644 (file)
--- a/include/linux/ieee802154.h
+++ b/include/linux/ieee802154.h
@@ -31,6 +31,17 @@
 #define IEEE802154_ACK_PSDU_LEN                5
 #define IEEE802154_MIN_PSDU_LEN                9
 #define IEEE802154_FCS_LEN             2
+#define IEEE802154_MAX_AUTH_TAG_LEN    16
+
+/*  General MAC frame format:
+ *  2 bytes: Frame Control
+ *  1 byte:  Sequence Number
+ * 20 bytes: Addressing fields
+ * 14 bytes: Auxiliary Security Header
+ */
+#define IEEE802154_MAX_HEADER_LEN      (2 + 1 + 20 + 14)
+#define IEEE802154_MIN_HEADER_LEN      (IEEE802154_ACK_PSDU_LEN - \
+                                        IEEE802154_FCS_LEN)
 
 #define IEEE802154_PAN_ID_BROADCAST    0xffff
 #define IEEE802154_ADDR_SHORT_BROADCAST        0xffff