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https://github.com/apache/nuttx.git
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wireless/ieee802154: Starts adding MAC request data functionality
This commit is contained in:
Anthony Merlino
parent
2aaec20bbb
commit
36a6bda755
1 changed files with 429 additions and 70 deletions
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@ -68,49 +68,191 @@ struct ieee802154_privmac_s
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FAR struct ieee802154_radio_s *radio; /* Contained IEEE802.15.4 radio dev */
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FAR const struct ieee802154_maccb_s *cb; /* Contained MAC callbacks */
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/* MIB attributes, grouped to save memory */
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/* 0x40 */ uint8_t macAckWaitDuration : 1; /* 55 or 120(true) */
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/* 0x41 */ uint8_t macAssociationPermit : 1;
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/* 0x42 */ uint8_t macAutoRequest : 1;
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/* 0x43 */ uint8_t macBattLifeExt : 1;
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/* 0x44 */ uint8_t macBattLifeExtPeriods : 1; /* 6 or 8(true) */
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/* 0x4E */ uint8_t macMaxCSMABackoffs : 3; /* 0-5 */
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sem_t excl_sem; /* Support exclusive access */
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/* 0x47 */ uint8_t macBeaconOrder : 4;
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/* 0x54 */ uint8_t macSuperframeOrder : 4;
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/* Support a singly linked list of transactions that will be sent using the
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* CSMA algorithm. On a non-beacon enabled PAN, these transactions will be
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* sent whenever. On a beacon-enabled PAN, these transactions will be sent
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* during the CAP of the Coordinator's superframe. */
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/* 0x4F */ uint32_t macMinBE : 2;
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/* 0x4D */ uint32_t macGTSPermit : 1;
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/* 0x51 */ uint32_t macPromiscuousMode : 1;
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/* 0x52 */ uint32_t macRxOnWhenIdle : 1;
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uint32_t macPad : 3;
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/* 0x48 */ uint32_t macBeaconTxTime : 24;
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FAR struct mac802154_trans_s *csma_head;
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FAR struct mac802154_trans_s *csma_tail;
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/* 0x45 */ uint8_t macBeaconPayload[IEEE802154_MAX_BEACON_PAYLOAD_LENGTH];
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/* 0x46 */ uint8_t macBeaconPayloadLength;
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/* 0x49 */ uint8_t macBSN;
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/* 0x4A */ uint8_t macCoordExtendedAddress[8];
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/* 0x4B */ uint16_t macCoordShortAddress;
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/* 0x4C */ uint8_t macDSN;
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/* 0x50 */ uint16_t macPANId;
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/* 0x53 */ uint16_t macShortAddress;
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/* 0x55 */ uint16_t macTransactionPersistenceTime;
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#if 0
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/* Security MIB */
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/* 0x70 */ macACLEntryDescriptorSet
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/* 0x71 */ macACLEntryDescriptorSetSize
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/* 0x74 */ macDefaultSecurityMaterial
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/* 0x72 */ macDefaultSecurity:1
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/* 0x75 */ macDefaultSecuritySuite:3
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/* 0x73 */ macDefaultSecurityMaterialLength:6
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/* 0x76 */ macSecurityMode:2
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#endif
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struct mac802154_trans_s csma_buf[5];
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/* Support a singly linked list of transactions that will be sent indirectly.
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* This list should only be used by a MAC acting as a coordinator. These
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* transactions will stay here until the data is extracted by the destination
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* device sending a Data Request MAC command or if too much time passes. This
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* list should also be used to populate the address list of the outgoing
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* beacon frame */
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FAR struct mac802154_trans_s *indirect_head;
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FAR struct mac802154_trans_s *indirect_tail;
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FAR struct mac802154_trans_s *active_trans;
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/* MAC PIB attributes, grouped to save memory */
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/* Holds all address information (Extended, Short, and PAN ID) for the MAC */
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struct ieee802154_addr_s addr;
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/* Holds all address information (Extended, Short) for Coordinator */
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struct ieee802154_addr_s coord_addr;
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/* The maximum number of symbols to wait for an acknowledgement frame to
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* arrive following a transmitted data frame. [1] pg. 126
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*
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* NOTE: This may be able to be a 16-bit or even an 8-bit number. I wasn't
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* sure at the time what the range of reasonable values was */
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uint32_t ack_wait_dur;
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/* The maximum time to wait either for a frame intended as a response to a
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* data request frame or for a broadcast frame following a beacon with the
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* Frame Pending field set to one. [1] pg. 127
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*
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* NOTE: This may be able to be a 16-bit or even an 8-bit number. I wasn't
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* sure at the time what the range of reasonable values was */
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uint32_t max_frame_wait_time;
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/* The maximum time (in unit periods) that a transaction is stored by a
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* coordinator and indicated in its beacon. */
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uint16_t trans_persist_time;
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/* Contents of beacon payload */
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uint8_t beacon_payload[IEEE802154_MAX_BEACON_PAYLOAD_LENGTH];
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uint8_t beacon_payload_len; /* Length of beacon payload */
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uint8_t batt_life_ext_periods; /* # of backoff periods during which rx is
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* enabled after the IFS following beacon */
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uint8_t bsn; /* Seq. num added to tx beacon frame */
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uint8_t dsn; /* Seq. num added to tx data or MAC frame */
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uint8_t max_retries; /* Max # of retries alloed after tx failure */
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/* The maximum time, in multiples of aBaseSuperframeDuration, a device shall
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* wait for a response command frame to be available following a request
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* command frame. [1] 128 */
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uint8_t resp_wait_time;
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/* The total transmit duration (including PHY header and FCS) specified in
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* symbols. [1] pg. 129 */
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uint32_t tx_total_dur;
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struct
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{
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uint32_t is_assoc : 1; /* Are we associated to the PAN */
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uint32_t assoc_permit : 1; /* Are we allowing assoc. as a coord. */
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uint32_t auto_req : 1; /* Automatically send data req. if addr
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* addr is in the beacon frame */
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uint32_t batt_life_ext : 1; /* Is BLE enabled */
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uint32_t gts_permit : 1; /* Is PAN Coord. accepting GTS reqs. */
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uint32_t promiscuous_mode : 1; /* Is promiscuous mode on? */
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uint32_t ranging_supported : 1; /* Does MAC sublayer support ranging */
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uint32_t rx_when_idle : 1; /* Recvr. on during idle periods */
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uint32_t sec_enabled : 1; /* Does MAC sublayer have security en. */
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uint32_t max_csma_backoffs : 3; /* Max num backoffs for CSMA algorithm
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* before declaring ch access failure */
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uint32_t beacon_order : 4; /* Freq. that beacon is transmitted */
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uint32_t superframe_order : 4; /* Length of active portion of outgoing
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* superframe, including the beacon */
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/* The offset, measured is symbols, between the symbol boundary at which the
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* MLME captures the timestamp of each transmitted and received frame, and
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* the onset of the first symbol past the SFD, namely the first symbol of
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* the frames [1] pg. 129 */
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uint32_t sync_symb_offset : 12;
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}
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struct
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{
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uint32_t beacon_tx_time : 24; /* Time of last beacon transmit */
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uint32_t min_be : 4; /* Min value of backoff exponent (BE) */
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uint32_t max_be : 4; /* Max value of backoff exponent (BE) */
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}
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struct
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{
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uint32_t tx_ctrl_active_dur : 17; /* Duration for which tx is permitted to
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* be active */
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uint32_t tx_ctrl_pause_dur : 1; /* Duration after tx before another tx is
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* permitted. 0=2000, 1= 10000 */
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uint32_t timestamp_support : 1; /* Does MAC layer supports timestamping */
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}
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/* TODO: Add Security-related MAC PIB attributes */
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};
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struct mac802154_trans_s
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{
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/* Supports a singly linked list */
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FAR struct mac802154_trans_s *flink;
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uint8_t msdu_handle;
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uint8_t *mhr_buf;
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uint8_t mhr_len;
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uint8_t *d_buf;
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uint8_t d_len;
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sem_t sem;
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};
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struct mac802154_unsec_mhr_s
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{
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uint8_t length;
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union {
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uint16_t frame_control;
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uint8_t data[IEEE802154_MAX_UNSEC_MHR_OVERHEAD];
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};
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};
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Name: mac802154_semtake
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*
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* Description:
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* Acquire the semaphore used for access serialization.
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*
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****************************************************************************/
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static inline int mac802154_takesem(sem_t *sem)
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{
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/* Take a count from the semaphore, possibly waiting */
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if (sem_wait(sem) < 0)
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{
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/* EINTR is the only error that we expect */
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int errcode = get_errno();
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DEBUGASSERT(errcode == EINTR);
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return -errcode;
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}
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return OK;
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}
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/****************************************************************************
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* Name: mac802154_defaultmib
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*
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@ -121,41 +263,7 @@ struct ieee802154_privmac_s
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static int mac802154_defaultmib(FAR struct ieee802154_privmac_s *priv)
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{
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priv->macAckWaitDuration = 0;
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priv->macAssociationPermit = 0;
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priv->macAutoRequest = 1;
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priv->macBattLifeExt = 0;
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priv->macBattLifeExtPeriods = 0;
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priv->macMaxCSMABackoffs = 4;
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priv->macBeaconOrder = 15;
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priv->macSuperframeOrder = 15;
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priv->macMinBE = 3;
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priv->macGTSPermit = 1;
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priv->macPromiscuousMode = 0;
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priv->macRxOnWhenIdle = 0;
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priv->macBeaconTxTime = 0x000000;
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priv->macBeaconPayloadLength = 0;
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priv->macBSN = 0; /* Shall be random */
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//priv->macCoordExtendedAddress[8];
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priv->macCoordShortAddress = 0xffff;
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priv->macDSN = 0; /* Shall be random */
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priv->macPANId = 0xffff;
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priv->macShortAddress = 0xffff;
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priv->macTransactionPersistenceTime = 0x01f4;
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#if 0
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/* Security MIB */
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priv->macACLEntryDescriptorSetSize = 0;
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priv->macDefaultSecurity = 0;
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priv->macDefaultSecuritySuite = 0;
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priv->macDefaultSecurityMaterialLength = 0x15;
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priv->macSecurityMode = 0;
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#endif
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/* TODO: Set all MAC fields to default values */
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return OK;
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}
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@ -314,7 +422,258 @@ int mac802154_ioctl(MACHANDLE mac, int cmd, unsigned long arg)
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int mac802154_req_data(MACHANDLE mac, FAR struct ieee802154_data_req_s *req)
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{
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FAR struct ieee802154_privmac_s *priv = (FAR struct ieee802154_privmac_s *)mac;
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return -ENOTTY;
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FAR struct mac802154_trans_s *trans;
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struct mac802154_unsec_mhr_s mhr;
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int ret;
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/* Start off assuming there is only the frame_control field in the MHR */
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mhr.length = 2;
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/* Do a preliminary check to make sure the MSDU isn't too long for even the
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* best case */
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if (req->msdu_length > IEEE802154_MAX_MAC_PAYLOAD_SIZE)
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{
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return -EINVAL;
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}
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/* Ensure we start with a clear frame control field */
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mhr.frame_control = 0;
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/* Set the frame type to Data */
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mhr.frame_control |= IEEE802154_FRAME_DATA << IEEE802154_FRAMECTRL_SHIFT_FTYPE;
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/* If the msduLength is greater than aMaxMACSafePayloadSize, the MAC sublayer
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* will set the Frame Version to one. [1] pg. 118 */
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if (req->msdu_length > IEEE802154_MAX_SAFE_MAC_PAYLOAD_SIZE)
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{
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mhr.frame_ctrl |= IEEE802154_FRAMECTRL_VERSION;
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}
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/* If the TXOptions parameter specifies that an acknowledged transmission is
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* required, the AR field will be set appropriately, as described in
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* 5.1.6.4 [1] pg. 118 */
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mhr.frame_ctrl |= (req->ack_tx << IEEE802154_FRAMECTRL_SHIFT_ACKREQ);
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/* If the destination address is present, copy the PAN ID and one of the
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* addresses, depending on mode, into the MHR */
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if (req->dest_addr.mode != IEEE802154_ADDRMODE_NONE)
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{
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memcpy(&mhr.data[mhr.length], req->dest_addr.panid, 2);
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mhr.length += 2;
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if (req->dest_addr.mode == IEEE802154_ADDRMODE_SHORT)
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{
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memcpy(&mhr.data[mhr.length], req->dest_addr.saddr, 2);
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mhr.length += 2;
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}
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else if (req->dest_addr.mode == IEEE802154_ADDRMODE_EXTENDED)
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{
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memcpy(&mhr.data[mhr.length], req->dest_addr.eaddr, 8);
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mhr.length += 8;
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}
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}
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/* Set the destination addr mode inside the frame contorl field */
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mhr.frame_ctrl |= (req->dest_addr.mode << IEEE802154_FRAMECTRL_SHIFT_DADDR);
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/* From this point on, we need exclusive access to the privmac struct */
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ret = mac802154dev_takesem(&dev->md_exclsem);
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if (ret < 0)
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{
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wlerr("ERROR: mac802154_takesem failed: %d\n", ret);
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return ret;
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}
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/* If both destination and source addressing information is present, the MAC
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* sublayer shall compare the destination and source PAN identifiers.
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* [1] pg. 41 */
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if (req->src_addr_mode != IEEE802154_ADDRMODE_NONE &&
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req->dest_addr.mode != IEEE802154_ADDRMODE_NONE)
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{
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/* If the PAN identifiers are identical, the PAN ID Compression field
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* shall be set to one, and the source PAN identifier shall be omitted
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* from the transmitted frame. [1] pg. 41 */
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if(req->dest_addr.panid == priv->addr.panid)
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{
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mhr.frame_control |= IEEE802154_FRAMECTRL_PANIDCOMP;
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}
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}
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if (req->src_addr_mode != IEEE802154_ADDRMODE_NONE)
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{
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/* If the destination address is not included, or if PAN ID Compression
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* is off, we need to include the Source PAN ID */
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if (req->dest_addr.mode == IEEE802154_ADDRMODE_NONE ||
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(mhr.frame_control & IEEE802154_FRAMECTRL_PANIDCOMP)
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{
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memcpy(&mhr.data[mhr.length], priv->addr.panid, 2);
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mhr.length += 2;
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}
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if (req->src_addr_mode == IEEE802154_ADDRMODE_SHORT)
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{
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memcpy(&mhr.data[mhr.length], priv->addr.saddr, 2);
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mhr.length += 2;
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}
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else if (req->src_addr_mode == IEEE802154_ADDRMODE_EXTENDED)
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{
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memcpy(&mhr.data[mhr.length], priv->addr.eaddr, 8);
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mhr.length += 8;
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}
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}
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/* Set the source addr mode inside the frame contorl field */
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mhr.frame_ctrl |= (req->src_addr_mode << IEEE802154_FRAMECTRL_SHIFT_SADDR);
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/* Each time a data or a MAC command frame is generated, the MAC sublayer
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* shall copy the value of macDSN into the Sequence Number field of the MHR
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* of the outgoing frame and then increment it by one. [1] pg. 40 */
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mhr.data[mhr.length++] = priv.dsn++;
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/* Now that we know which fields are included in the header, we can make
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* sure we actually have enough room in the PSDU */
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if (mhr.length + req->msdu_length + IEEE802154_MFR_LENGTH >
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IEEE802154_MAX_PHY_PACKET_SIZE)
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{
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return -E2BIG;
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}
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trans->mhr_buf = &mhr.data[0];
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trans->mhr_len = mhr.length;
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trans->d_buf = &req->msdu[0];
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trans->d_len = req->msdu_length;
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trans->msdu_handle = req->msdu_handle;
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/* If the TxOptions parameter specifies that a GTS transmission is required,
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* the MAC sublayer will determine whether it has a valid GTS as described
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* 5.1.7.3. If a valid GTS could not be found, the MAC sublayer will discard
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* the MSDU. If a valid GTS was found, the MAC sublayer will defer, if
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* necessary, until the GTS. If the TxOptions parameter specifies that a GTS
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* transmission is not required, the MAC sublayer will transmit the MSDU using
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* either slotted CSMA-CA in the CAP for a beacon-enabled PAN or unslotted
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* CSMA-CA for a nonbeacon-enabled PAN. Specifying a GTS transmission in the
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* TxOptions parameter overrides an indirect transmission request.
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* [1] pg. 118 */
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if (req->gts_tx)
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{
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/* TODO: Support GTS transmission. This should just change where we link
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* the transaction. Instead of going in the CSMA transaction list, it
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* should be linked to the GTS' transaction list. We'll need to check if
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* the GTS is valid, and then find the GTS, before linking. Note, we also
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* don't have to try and kick-off any transmission here. */
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return -ENOTSUP;
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}
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else
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{
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/* If the TxOptions parameter specifies that an indirect transmission is
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* required and this primitive is received by the MAC sublayer of a
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* coordinator, the data frame is sent using indirect transmission, as
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* described in 5.1.5 and 5.1.6.3. [1] */
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if (req->indirect_tx)
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{
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/* If the TxOptions parameter specifies that an indirect transmission
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* is required and if the device receiving this primitive is not a
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* coordinator, the destination address is not present, or the
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* TxOptions parameter also specifies a GTS transmission, the indirect
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* transmission option will be ignored. [1] */
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if (priv->is_coord && req->dest_addr.mode != IEEE802154_ADDRMODE_NONE)
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{
|
||||
/* Link the transaction into the indirect_trans list */
|
||||
|
||||
priv->indirect_tail->flink = trans;
|
||||
priv->indirect_tail = trans;
|
||||
}
|
||||
else
|
||||
{
|
||||
/* Override the setting since it wasn't valid */
|
||||
|
||||
req->indirect_tx = 0;
|
||||
}
|
||||
}
|
||||
|
||||
/* If this is a direct transmission not during a GTS */
|
||||
|
||||
if (!req->indirect_tx)
|
||||
{
|
||||
/* Link the transaction into the CSMA transaction list */
|
||||
|
||||
priv->csma_tail->flink = trans;
|
||||
priv->csma_tail = trans;
|
||||
|
||||
/* Notify the radio driver that there is data available */
|
||||
|
||||
priv->radio->tx_notify(priv->radio);
|
||||
|
||||
sem_wait(&trans->sem);
|
||||
}
|
||||
}
|
||||
|
||||
return OK;
|
||||
}
|
||||
|
||||
|
||||
/* Called from interrupt level or worker thread with interrupts disabled */
|
||||
|
||||
static uint16_t mac802154_poll_csma(FAR struct ieee802154_phyif_s *phyif,
|
||||
FAR struct ieee802154_txdesc_s *tx_desc,
|
||||
uint8_t *buf)
|
||||
{
|
||||
FAR struct ieee802154_privmac_s *priv =
|
||||
(FAR struct ieee802154_privmac_s *)&phyif->priv;
|
||||
|
||||
FAR struct mac802154_trans_s *trans;
|
||||
|
||||
/* Check to see if there are any CSMA transactions waiting */
|
||||
|
||||
if (mac->csma_head)
|
||||
{
|
||||
/* Pop a CSMA transaction off the list */
|
||||
|
||||
trans = mac->csma_head;
|
||||
mac->csma_head = mac->csma_head.flink;
|
||||
|
||||
/* Setup the transmit descriptor */
|
||||
|
||||
tx_desc->psdu_handle = trans->msdu_handle;
|
||||
tx_desc->psdu_length = trans->mhr_len + trans->d_len;
|
||||
|
||||
/* Copy the frame into the buffer */
|
||||
|
||||
memcpy(&buf[0], trans->mhr_buf, trans->mhr_len);
|
||||
memcpy(&buf[trans->mhr_len], trans->d_buf, trans->d_len);
|
||||
|
||||
/* Now that we've passed off the data, notify the waiting thread.
|
||||
* NOTE: The transaction was allocated on the waiting thread's stack so
|
||||
* it will be automatically deallocated when that thread awakens and
|
||||
* returns */
|
||||
|
||||
sem_post(trans->sem);
|
||||
|
||||
return txdesc->psdu_length;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
|
|
|
|||
Loading…
Add table
Add a link
Reference in a new issue