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authorJosé Pekkarinen <jose.pekkarinen@nokia.com>2016-04-11 10:41:07 +0300
committerJosé Pekkarinen <jose.pekkarinen@nokia.com>2016-04-13 08:17:18 +0300
commite09b41010ba33a20a87472ee821fa407a5b8da36 (patch)
treed10dc367189862e7ca5c592f033dc3726e1df4e3 /kernel/include/linux/ieee802154.h
parentf93b97fd65072de626c074dbe099a1fff05ce060 (diff)
These changes are the raw update to linux-4.4.6-rt14. Kernel sources
are taken from kernel.org, and rt patch from the rt wiki download page. During the rebasing, the following patch collided: Force tick interrupt and get rid of softirq magic(I70131fb85). Collisions have been removed because its logic was found on the source already. Change-Id: I7f57a4081d9deaa0d9ccfc41a6c8daccdee3b769 Signed-off-by: José Pekkarinen <jose.pekkarinen@nokia.com>
Diffstat (limited to 'kernel/include/linux/ieee802154.h')
-rw-r--r--kernel/include/linux/ieee802154.h63
1 files changed, 53 insertions, 10 deletions
diff --git a/kernel/include/linux/ieee802154.h b/kernel/include/linux/ieee802154.h
index 8872ca103..d3e415674 100644
--- a/kernel/include/linux/ieee802154.h
+++ b/kernel/include/linux/ieee802154.h
@@ -25,12 +25,22 @@
#include <linux/types.h>
#include <linux/random.h>
-#include <asm/byteorder.h>
#define IEEE802154_MTU 127
#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
@@ -205,6 +215,41 @@ enum {
IEEE802154_SCAN_IN_PROGRESS = 0xfc,
};
+/* frame control handling */
+#define IEEE802154_FCTL_FTYPE 0x0003
+#define IEEE802154_FCTL_ACKREQ 0x0020
+#define IEEE802154_FCTL_INTRA_PAN 0x0040
+
+#define IEEE802154_FTYPE_DATA 0x0001
+
+/*
+ * ieee802154_is_data - check if type is IEEE802154_FTYPE_DATA
+ * @fc: frame control bytes in little-endian byteorder
+ */
+static inline int ieee802154_is_data(__le16 fc)
+{
+ return (fc & cpu_to_le16(IEEE802154_FCTL_FTYPE)) ==
+ cpu_to_le16(IEEE802154_FTYPE_DATA);
+}
+
+/**
+ * ieee802154_is_ackreq - check if acknowledgment request bit is set
+ * @fc: frame control bytes in little-endian byteorder
+ */
+static inline bool ieee802154_is_ackreq(__le16 fc)
+{
+ return fc & cpu_to_le16(IEEE802154_FCTL_ACKREQ);
+}
+
+/**
+ * ieee802154_is_intra_pan - check if intra pan id communication
+ * @fc: frame control bytes in little-endian byteorder
+ */
+static inline bool ieee802154_is_intra_pan(__le16 fc)
+{
+ return fc & cpu_to_le16(IEEE802154_FCTL_INTRA_PAN);
+}
+
/**
* ieee802154_is_valid_psdu_len - check if psdu len is valid
* available lengths:
@@ -225,15 +270,13 @@ static inline bool ieee802154_is_valid_psdu_len(const u8 len)
* 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)
+static inline bool ieee802154_is_valid_extended_unicast_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.
+ /* Bail out if the address is all zero, or if the group
+ * address bit is set.
*/
return ((addr != cpu_to_le64(0x0000000000000000ULL)) &&
- (addr != cpu_to_le64(0xffffffffffffffffULL)));
+ !(addr & cpu_to_le64(0x0100000000000000ULL)));
}
/**
@@ -244,9 +287,9 @@ 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;
+ /* clear the group bit, and set the locally administered bit */
+ ((u8 *)addr)[IEEE802154_EXTENDED_ADDR_LEN - 1] &= ~0x01;
+ ((u8 *)addr)[IEEE802154_EXTENDED_ADDR_LEN - 1] |= 0x02;
}
#endif /* LINUX_IEEE802154_H */