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c3a6114f31
When dealing with 802.15.4, one often has to know the maximum payload size for a given packet. This depends on many factors, one of which is whether or not a security header is present in the frame. These definitions and functions provide an easy way for any upper layer to calculate the maximum payload size for a packet. The first obvious user for this is 6lowpan, which duplicates this calculation and gets it partially wrong because it ignores security headers. Signed-off-by: Phoebe Buckheister <phoebe.buckheister@itwm.fraunhofer.de> Signed-off-by: David S. Miller <davem@davemloft.net>
196 lines
6.9 KiB
C
196 lines
6.9 KiB
C
/*
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* IEEE802.15.4-2003 specification
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*
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* Copyright (C) 2007, 2008 Siemens AG
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2
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* as published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Written by:
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* Pavel Smolenskiy <pavel.smolenskiy@gmail.com>
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* Maxim Gorbachyov <maxim.gorbachev@siemens.com>
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* Maxim Osipov <maxim.osipov@siemens.com>
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* Dmitry Eremin-Solenikov <dbaryshkov@gmail.com>
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* Alexander Smirnov <alex.bluesman.smirnov@gmail.com>
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*/
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#ifndef NET_IEEE802154_H
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#define NET_IEEE802154_H
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#define IEEE802154_MTU 127
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#define IEEE802154_FC_TYPE_BEACON 0x0 /* Frame is beacon */
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#define IEEE802154_FC_TYPE_DATA 0x1 /* Frame is data */
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#define IEEE802154_FC_TYPE_ACK 0x2 /* Frame is acknowledgment */
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#define IEEE802154_FC_TYPE_MAC_CMD 0x3 /* Frame is MAC command */
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#define IEEE802154_FC_TYPE_SHIFT 0
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#define IEEE802154_FC_TYPE_MASK ((1 << 3) - 1)
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#define IEEE802154_FC_TYPE(x) ((x & IEEE802154_FC_TYPE_MASK) >> IEEE802154_FC_TYPE_SHIFT)
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#define IEEE802154_FC_SET_TYPE(v, x) do { \
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v = (((v) & ~IEEE802154_FC_TYPE_MASK) | \
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(((x) << IEEE802154_FC_TYPE_SHIFT) & IEEE802154_FC_TYPE_MASK)); \
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} while (0)
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#define IEEE802154_FC_SECEN_SHIFT 3
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#define IEEE802154_FC_SECEN (1 << IEEE802154_FC_SECEN_SHIFT)
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#define IEEE802154_FC_FRPEND_SHIFT 4
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#define IEEE802154_FC_FRPEND (1 << IEEE802154_FC_FRPEND_SHIFT)
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#define IEEE802154_FC_ACK_REQ_SHIFT 5
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#define IEEE802154_FC_ACK_REQ (1 << IEEE802154_FC_ACK_REQ_SHIFT)
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#define IEEE802154_FC_INTRA_PAN_SHIFT 6
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#define IEEE802154_FC_INTRA_PAN (1 << IEEE802154_FC_INTRA_PAN_SHIFT)
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#define IEEE802154_FC_SAMODE_SHIFT 14
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#define IEEE802154_FC_SAMODE_MASK (3 << IEEE802154_FC_SAMODE_SHIFT)
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#define IEEE802154_FC_DAMODE_SHIFT 10
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#define IEEE802154_FC_DAMODE_MASK (3 << IEEE802154_FC_DAMODE_SHIFT)
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#define IEEE802154_FC_VERSION_SHIFT 12
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#define IEEE802154_FC_VERSION_MASK (3 << IEEE802154_FC_VERSION_SHIFT)
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#define IEEE802154_FC_VERSION(x) ((x & IEEE802154_FC_VERSION_MASK) >> IEEE802154_FC_VERSION_SHIFT)
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#define IEEE802154_FC_SAMODE(x) \
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(((x) & IEEE802154_FC_SAMODE_MASK) >> IEEE802154_FC_SAMODE_SHIFT)
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#define IEEE802154_FC_DAMODE(x) \
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(((x) & IEEE802154_FC_DAMODE_MASK) >> IEEE802154_FC_DAMODE_SHIFT)
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#define IEEE802154_SCF_SECLEVEL_MASK 7
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#define IEEE802154_SCF_SECLEVEL_SHIFT 0
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#define IEEE802154_SCF_SECLEVEL(x) (x & IEEE802154_SCF_SECLEVEL_MASK)
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#define IEEE802154_SCF_KEY_ID_MODE_SHIFT 3
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#define IEEE802154_SCF_KEY_ID_MODE_MASK (3 << IEEE802154_SCF_KEY_ID_MODE_SHIFT)
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#define IEEE802154_SCF_KEY_ID_MODE(x) \
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((x & IEEE802154_SCF_KEY_ID_MODE_MASK) >> IEEE802154_SCF_KEY_ID_MODE_SHIFT)
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#define IEEE802154_SCF_KEY_IMPLICIT 0
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#define IEEE802154_SCF_KEY_INDEX 1
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#define IEEE802154_SCF_KEY_SHORT_INDEX 2
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#define IEEE802154_SCF_KEY_HW_INDEX 3
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#define IEEE802154_SCF_SECLEVEL_NONE 0
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#define IEEE802154_SCF_SECLEVEL_MIC32 1
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#define IEEE802154_SCF_SECLEVEL_MIC64 2
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#define IEEE802154_SCF_SECLEVEL_MIC128 3
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#define IEEE802154_SCF_SECLEVEL_ENC 4
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#define IEEE802154_SCF_SECLEVEL_ENC_MIC32 5
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#define IEEE802154_SCF_SECLEVEL_ENC_MIC64 6
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#define IEEE802154_SCF_SECLEVEL_ENC_MIC128 7
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/* MAC footer size */
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#define IEEE802154_MFR_SIZE 2 /* 2 octets */
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/* MAC's Command Frames Identifiers */
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#define IEEE802154_CMD_ASSOCIATION_REQ 0x01
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#define IEEE802154_CMD_ASSOCIATION_RESP 0x02
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#define IEEE802154_CMD_DISASSOCIATION_NOTIFY 0x03
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#define IEEE802154_CMD_DATA_REQ 0x04
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#define IEEE802154_CMD_PANID_CONFLICT_NOTIFY 0x05
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#define IEEE802154_CMD_ORPHAN_NOTIFY 0x06
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#define IEEE802154_CMD_BEACON_REQ 0x07
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#define IEEE802154_CMD_COORD_REALIGN_NOTIFY 0x08
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#define IEEE802154_CMD_GTS_REQ 0x09
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/*
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* The return values of MAC operations
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*/
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enum {
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/*
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* The requested operation was completed successfully.
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* For a transmission request, this value indicates
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* a successful transmission.
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*/
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IEEE802154_SUCCESS = 0x0,
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/* The beacon was lost following a synchronization request. */
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IEEE802154_BEACON_LOSS = 0xe0,
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/*
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* A transmission could not take place due to activity on the
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* channel, i.e., the CSMA-CA mechanism has failed.
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*/
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IEEE802154_CHNL_ACCESS_FAIL = 0xe1,
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/* The GTS request has been denied by the PAN coordinator. */
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IEEE802154_DENINED = 0xe2,
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/* The attempt to disable the transceiver has failed. */
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IEEE802154_DISABLE_TRX_FAIL = 0xe3,
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/*
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* The received frame induces a failed security check according to
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* the security suite.
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*/
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IEEE802154_FAILED_SECURITY_CHECK = 0xe4,
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/*
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* The frame resulting from secure processing has a length that is
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* greater than aMACMaxFrameSize.
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*/
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IEEE802154_FRAME_TOO_LONG = 0xe5,
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/*
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* The requested GTS transmission failed because the specified GTS
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* either did not have a transmit GTS direction or was not defined.
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*/
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IEEE802154_INVALID_GTS = 0xe6,
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/*
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* A request to purge an MSDU from the transaction queue was made using
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* an MSDU handle that was not found in the transaction table.
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*/
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IEEE802154_INVALID_HANDLE = 0xe7,
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/* A parameter in the primitive is out of the valid range.*/
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IEEE802154_INVALID_PARAMETER = 0xe8,
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/* No acknowledgment was received after aMaxFrameRetries. */
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IEEE802154_NO_ACK = 0xe9,
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/* A scan operation failed to find any network beacons.*/
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IEEE802154_NO_BEACON = 0xea,
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/* No response data were available following a request. */
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IEEE802154_NO_DATA = 0xeb,
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/* The operation failed because a short address was not allocated. */
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IEEE802154_NO_SHORT_ADDRESS = 0xec,
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/*
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* A receiver enable request was unsuccessful because it could not be
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* completed within the CAP.
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*/
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IEEE802154_OUT_OF_CAP = 0xed,
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/*
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* A PAN identifier conflict has been detected and communicated to the
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* PAN coordinator.
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*/
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IEEE802154_PANID_CONFLICT = 0xee,
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/* A coordinator realignment command has been received. */
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IEEE802154_REALIGMENT = 0xef,
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/* The transaction has expired and its information discarded. */
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IEEE802154_TRANSACTION_EXPIRED = 0xf0,
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/* There is no capacity to store the transaction. */
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IEEE802154_TRANSACTION_OVERFLOW = 0xf1,
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/*
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* The transceiver was in the transmitter enabled state when the
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* receiver was requested to be enabled.
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*/
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IEEE802154_TX_ACTIVE = 0xf2,
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/* The appropriate key is not available in the ACL. */
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IEEE802154_UNAVAILABLE_KEY = 0xf3,
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/*
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* A SET/GET request was issued with the identifier of a PIB attribute
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* that is not supported.
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*/
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IEEE802154_UNSUPPORTED_ATTR = 0xf4,
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/*
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* A request to perform a scan operation failed because the MLME was
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* in the process of performing a previously initiated scan operation.
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*/
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IEEE802154_SCAN_IN_PROGRESS = 0xfc,
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};
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#endif
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