v4.19.13 snapshot.
diff --git a/include/linux/ieee802154.h b/include/linux/ieee802154.h
new file mode 100644
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+++ b/include/linux/ieee802154.h
@@ -0,0 +1,363 @@
+/*
+ * IEEE802.15.4-2003 specification
+ *
+ * Copyright (C) 2007, 2008 Siemens AG
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * Written by:
+ * Pavel Smolenskiy <pavel.smolenskiy@gmail.com>
+ * Maxim Gorbachyov <maxim.gorbachev@siemens.com>
+ * Maxim Osipov <maxim.osipov@siemens.com>
+ * Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
+ * Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
+ */
+
+#ifndef LINUX_IEEE802154_H
+#define LINUX_IEEE802154_H
+
+#include <linux/types.h>
+#include <linux/random.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
+#define IEEE802154_FC_LEN 2
+#define IEEE802154_SEQ_LEN 1
+
+/* 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
+#define IEEE802154_ADDR_SHORT_UNSPEC 0xfffe
+
+#define IEEE802154_EXTENDED_ADDR_LEN 8
+#define IEEE802154_SHORT_ADDR_LEN 2
+#define IEEE802154_PAN_ID_LEN 2
+
+#define IEEE802154_LIFS_PERIOD 40
+#define IEEE802154_SIFS_PERIOD 12
+#define IEEE802154_MAX_SIFS_FRAME_SIZE 18
+
+#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 */
+#define IEEE802154_FC_TYPE_MAC_CMD 0x3 /* Frame is MAC command */
+
+#define IEEE802154_FC_TYPE_SHIFT 0
+#define IEEE802154_FC_TYPE_MASK ((1 << 3) - 1)
+#define IEEE802154_FC_TYPE(x) ((x & IEEE802154_FC_TYPE_MASK) >> IEEE802154_FC_TYPE_SHIFT)
+#define IEEE802154_FC_SET_TYPE(v, x) do { \
+ v = (((v) & ~IEEE802154_FC_TYPE_MASK) | \
+ (((x) << IEEE802154_FC_TYPE_SHIFT) & IEEE802154_FC_TYPE_MASK)); \
+ } while (0)
+
+#define IEEE802154_FC_SECEN_SHIFT 3
+#define IEEE802154_FC_SECEN (1 << IEEE802154_FC_SECEN_SHIFT)
+#define IEEE802154_FC_FRPEND_SHIFT 4
+#define IEEE802154_FC_FRPEND (1 << IEEE802154_FC_FRPEND_SHIFT)
+#define IEEE802154_FC_ACK_REQ_SHIFT 5
+#define IEEE802154_FC_ACK_REQ (1 << IEEE802154_FC_ACK_REQ_SHIFT)
+#define IEEE802154_FC_INTRA_PAN_SHIFT 6
+#define IEEE802154_FC_INTRA_PAN (1 << IEEE802154_FC_INTRA_PAN_SHIFT)
+
+#define IEEE802154_FC_SAMODE_SHIFT 14
+#define IEEE802154_FC_SAMODE_MASK (3 << IEEE802154_FC_SAMODE_SHIFT)
+#define IEEE802154_FC_DAMODE_SHIFT 10
+#define IEEE802154_FC_DAMODE_MASK (3 << IEEE802154_FC_DAMODE_SHIFT)
+
+#define IEEE802154_FC_VERSION_SHIFT 12
+#define IEEE802154_FC_VERSION_MASK (3 << IEEE802154_FC_VERSION_SHIFT)
+#define IEEE802154_FC_VERSION(x) ((x & IEEE802154_FC_VERSION_MASK) >> IEEE802154_FC_VERSION_SHIFT)
+
+#define IEEE802154_FC_SAMODE(x) \
+ (((x) & IEEE802154_FC_SAMODE_MASK) >> IEEE802154_FC_SAMODE_SHIFT)
+
+#define IEEE802154_FC_DAMODE(x) \
+ (((x) & IEEE802154_FC_DAMODE_MASK) >> IEEE802154_FC_DAMODE_SHIFT)
+
+#define IEEE802154_SCF_SECLEVEL_MASK 7
+#define IEEE802154_SCF_SECLEVEL_SHIFT 0
+#define IEEE802154_SCF_SECLEVEL(x) (x & IEEE802154_SCF_SECLEVEL_MASK)
+#define IEEE802154_SCF_KEY_ID_MODE_SHIFT 3
+#define IEEE802154_SCF_KEY_ID_MODE_MASK (3 << IEEE802154_SCF_KEY_ID_MODE_SHIFT)
+#define IEEE802154_SCF_KEY_ID_MODE(x) \
+ ((x & IEEE802154_SCF_KEY_ID_MODE_MASK) >> IEEE802154_SCF_KEY_ID_MODE_SHIFT)
+
+#define IEEE802154_SCF_KEY_IMPLICIT 0
+#define IEEE802154_SCF_KEY_INDEX 1
+#define IEEE802154_SCF_KEY_SHORT_INDEX 2
+#define IEEE802154_SCF_KEY_HW_INDEX 3
+
+#define IEEE802154_SCF_SECLEVEL_NONE 0
+#define IEEE802154_SCF_SECLEVEL_MIC32 1
+#define IEEE802154_SCF_SECLEVEL_MIC64 2
+#define IEEE802154_SCF_SECLEVEL_MIC128 3
+#define IEEE802154_SCF_SECLEVEL_ENC 4
+#define IEEE802154_SCF_SECLEVEL_ENC_MIC32 5
+#define IEEE802154_SCF_SECLEVEL_ENC_MIC64 6
+#define IEEE802154_SCF_SECLEVEL_ENC_MIC128 7
+
+/* MAC footer size */
+#define IEEE802154_MFR_SIZE 2 /* 2 octets */
+
+/* MAC's Command Frames Identifiers */
+#define IEEE802154_CMD_ASSOCIATION_REQ 0x01
+#define IEEE802154_CMD_ASSOCIATION_RESP 0x02
+#define IEEE802154_CMD_DISASSOCIATION_NOTIFY 0x03
+#define IEEE802154_CMD_DATA_REQ 0x04
+#define IEEE802154_CMD_PANID_CONFLICT_NOTIFY 0x05
+#define IEEE802154_CMD_ORPHAN_NOTIFY 0x06
+#define IEEE802154_CMD_BEACON_REQ 0x07
+#define IEEE802154_CMD_COORD_REALIGN_NOTIFY 0x08
+#define IEEE802154_CMD_GTS_REQ 0x09
+
+/*
+ * The return values of MAC operations
+ */
+enum {
+ /*
+ * The requested operation was completed successfully.
+ * For a transmission request, this value indicates
+ * a successful transmission.
+ */
+ IEEE802154_SUCCESS = 0x0,
+
+ /* The beacon was lost following a synchronization request. */
+ IEEE802154_BEACON_LOSS = 0xe0,
+ /*
+ * A transmission could not take place due to activity on the
+ * channel, i.e., the CSMA-CA mechanism has failed.
+ */
+ IEEE802154_CHNL_ACCESS_FAIL = 0xe1,
+ /* The GTS request has been denied by the PAN coordinator. */
+ IEEE802154_DENINED = 0xe2,
+ /* The attempt to disable the transceiver has failed. */
+ IEEE802154_DISABLE_TRX_FAIL = 0xe3,
+ /*
+ * The received frame induces a failed security check according to
+ * the security suite.
+ */
+ IEEE802154_FAILED_SECURITY_CHECK = 0xe4,
+ /*
+ * The frame resulting from secure processing has a length that is
+ * greater than aMACMaxFrameSize.
+ */
+ IEEE802154_FRAME_TOO_LONG = 0xe5,
+ /*
+ * The requested GTS transmission failed because the specified GTS
+ * either did not have a transmit GTS direction or was not defined.
+ */
+ IEEE802154_INVALID_GTS = 0xe6,
+ /*
+ * A request to purge an MSDU from the transaction queue was made using
+ * an MSDU handle that was not found in the transaction table.
+ */
+ IEEE802154_INVALID_HANDLE = 0xe7,
+ /* A parameter in the primitive is out of the valid range.*/
+ IEEE802154_INVALID_PARAMETER = 0xe8,
+ /* No acknowledgment was received after aMaxFrameRetries. */
+ IEEE802154_NO_ACK = 0xe9,
+ /* A scan operation failed to find any network beacons.*/
+ IEEE802154_NO_BEACON = 0xea,
+ /* No response data were available following a request. */
+ IEEE802154_NO_DATA = 0xeb,
+ /* The operation failed because a short address was not allocated. */
+ IEEE802154_NO_SHORT_ADDRESS = 0xec,
+ /*
+ * A receiver enable request was unsuccessful because it could not be
+ * completed within the CAP.
+ */
+ IEEE802154_OUT_OF_CAP = 0xed,
+ /*
+ * A PAN identifier conflict has been detected and communicated to the
+ * PAN coordinator.
+ */
+ IEEE802154_PANID_CONFLICT = 0xee,
+ /* A coordinator realignment command has been received. */
+ IEEE802154_REALIGMENT = 0xef,
+ /* The transaction has expired and its information discarded. */
+ IEEE802154_TRANSACTION_EXPIRED = 0xf0,
+ /* There is no capacity to store the transaction. */
+ IEEE802154_TRANSACTION_OVERFLOW = 0xf1,
+ /*
+ * The transceiver was in the transmitter enabled state when the
+ * receiver was requested to be enabled.
+ */
+ IEEE802154_TX_ACTIVE = 0xf2,
+ /* The appropriate key is not available in the ACL. */
+ IEEE802154_UNAVAILABLE_KEY = 0xf3,
+ /*
+ * A SET/GET request was issued with the identifier of a PIB attribute
+ * that is not supported.
+ */
+ IEEE802154_UNSUPPORTED_ATTR = 0xf4,
+ /*
+ * A request to perform a scan operation failed because the MLME was
+ * in the process of performing a previously initiated scan operation.
+ */
+ IEEE802154_SCAN_IN_PROGRESS = 0xfc,
+};
+
+/* 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_FCTL_DADDR 0x0c00
+#define IEEE802154_FCTL_SADDR 0xc000
+
+#define IEEE802154_FTYPE_DATA 0x0001
+
+#define IEEE802154_FCTL_ADDR_NONE 0x0000
+#define IEEE802154_FCTL_DADDR_SHORT 0x0800
+#define IEEE802154_FCTL_DADDR_EXTENDED 0x0c00
+#define IEEE802154_FCTL_SADDR_SHORT 0x8000
+#define IEEE802154_FCTL_SADDR_EXTENDED 0xc000
+
+/*
+ * 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_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
+ */
+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_daddr_mode - get daddr mode from fc
+ * @fc: frame control bytes in little-endian byteorder
+ */
+static inline __le16 ieee802154_daddr_mode(__le16 fc)
+{
+ return fc & cpu_to_le16(IEEE802154_FCTL_DADDR);
+}
+
+/*
+ * ieee802154_saddr_mode - get saddr mode from fc
+ * @fc: frame control bytes in little-endian byteorder
+ */
+static inline __le16 ieee802154_saddr_mode(__le16 fc)
+{
+ return fc & cpu_to_le16(IEEE802154_FCTL_SADDR);
+}
+
+/**
+ * ieee802154_is_valid_psdu_len - check if psdu len is valid
+ * available lengths:
+ * 0-4 Reserved
+ * 5 MPDU (Acknowledgment)
+ * 6-8 Reserved
+ * 9-127 MPDU
+ *
+ * @len: psdu len with (MHR + payload + MFR)
+ */
+static inline bool ieee802154_is_valid_psdu_len(u8 len)
+{
+ return (len == IEEE802154_ACK_PSDU_LEN ||
+ (len >= IEEE802154_MIN_PSDU_LEN && len <= IEEE802154_MTU));
+}
+
+/**
+ * ieee802154_is_valid_extended_unicast_addr - check if extended addr is valid
+ * @addr: extended addr to check
+ */
+static inline bool ieee802154_is_valid_extended_unicast_addr(__le64 addr)
+{
+ /* 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(0x0100000000000000ULL)));
+}
+
+/**
+ * ieee802154_is_broadcast_short_addr - check if short addr is broadcast
+ * @addr: short addr to check
+ */
+static inline bool ieee802154_is_broadcast_short_addr(__le16 addr)
+{
+ return (addr == cpu_to_le16(IEEE802154_ADDR_SHORT_BROADCAST));
+}
+
+/**
+ * ieee802154_is_unspec_short_addr - check if short addr is unspecified
+ * @addr: short addr to check
+ */
+static inline bool ieee802154_is_unspec_short_addr(__le16 addr)
+{
+ return (addr == cpu_to_le16(IEEE802154_ADDR_SHORT_UNSPEC));
+}
+
+/**
+ * ieee802154_is_valid_src_short_addr - check if source short address is valid
+ * @addr: short addr to check
+ */
+static inline bool ieee802154_is_valid_src_short_addr(__le16 addr)
+{
+ return !(ieee802154_is_broadcast_short_addr(addr) ||
+ ieee802154_is_unspec_short_addr(addr));
+}
+
+/**
+ * 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);
+
+ /* 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 */