ieee802154: add security bit check function (bc405cd6) · Commits · 戴 / test

ieee802154_is_secen checks if the 802.15.4 security bit is set in the frame control field. Signed-off-by:

include/linux/ieee802154.h

+10 −0

Original line number	Diff line number	Diff line
		@@ -218,6 +218,7 @@ enum {
		/* frame control handling */
		#define IEEE802154_FCTL_FTYPE 0x0003
		#define IEEE802154_FCTL_ACKREQ 0x0020
		#define IEEE802154_FCTL_SECEN 0x0004
		#define IEEE802154_FCTL_INTRA_PAN 0x0040

		#define IEEE802154_FTYPE_DATA 0x0001
		@@ -232,6 +233,15 @@ static inline int ieee802154_is_data(__le16 fc)
		cpu_to_le16(IEEE802154_FTYPE_DATA);
		}

		/**
		* ieee802154_is_secen - check if Security bit is set
		* @fc: frame control bytes in little-endian byteorder
		*/
		static inline bool ieee802154_is_secen(__le16 fc)
		{
		return fc & cpu_to_le16(IEEE802154_FCTL_SECEN);
		}

		/**
		* ieee802154_is_ackreq - check if acknowledgment request bit is set
		* @fc: frame control bytes in little-endian byteorder