/****************************************************************************** * * This file is provided under a dual BSD/GPLv2 license. When using or * redistributing this file, you may do so under either license. * * GPL LICENSE SUMMARY * * Copyright(c) 2012 - 2013 Intel Corporation. All rights reserved. * * This program is free software; you can redistribute it and/or modify * it under the terms of version 2 of the GNU General Public License 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. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110, * USA * * The full GNU General Public License is included in this distribution * in the file called COPYING. * * Contact Information: * Intel Linux Wireless * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 * * BSD LICENSE * * Copyright(c) 2012 - 2013 Intel Corporation. All rights reserved. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * Neither the name Intel Corporation nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. *****************************************************************************/ #ifndef __fw_api_tx_h__ #define __fw_api_tx_h__ /** * enum iwl_tx_flags - bitmasks for tx_flags in TX command * @TX_CMD_FLG_PROT_REQUIRE: use RTS or CTS-to-self to protect the frame * @TX_CMD_FLG_ACK: expect ACK from receiving station * @TX_CMD_FLG_STA_RATE: use RS table with initial index from the TX command. * Otherwise, use rate_n_flags from the TX command * @TX_CMD_FLG_BA: this frame is a block ack * @TX_CMD_FLG_BAR: this frame is a BA request, immediate BAR is expected * Must set TX_CMD_FLG_ACK with this flag. * @TX_CMD_FLG_TXOP_PROT: protect frame with full TXOP protection * @TX_CMD_FLG_VHT_NDPA: mark frame is NDPA for VHT beamformer sequence * @TX_CMD_FLG_HT_NDPA: mark frame is NDPA for HT beamformer sequence * @TX_CMD_FLG_CSI_FDBK2HOST: mark to send feedback to host (only if good CRC) * @TX_CMD_FLG_BT_DIS: disable BT priority for this frame * @TX_CMD_FLG_SEQ_CTL: set if FW should override the sequence control. * Should be set for mgmt, non-QOS data, mcast, bcast and in scan command * @TX_CMD_FLG_MORE_FRAG: this frame is non-last MPDU * @TX_CMD_FLG_NEXT_FRAME: this frame includes information of the next frame * @TX_CMD_FLG_TSF: FW should calculate and insert TSF in the frame * Should be set for beacons and probe responses * @TX_CMD_FLG_CALIB: activate PA TX power calibrations * @TX_CMD_FLG_KEEP_SEQ_CTL: if seq_ctl is set, don't increase inner seq count * @TX_CMD_FLG_AGG_START: allow this frame to start aggregation * @TX_CMD_FLG_MH_PAD: driver inserted 2 byte padding after MAC header. * Should be set for 26/30 length MAC headers * @TX_CMD_FLG_RESP_TO_DRV: zero this if the response should go only to FW * @TX_CMD_FLG_CCMP_AGG: this frame uses CCMP for aggregation acceleration * @TX_CMD_FLG_TKIP_MIC_DONE: FW already performed TKIP MIC calculation * @TX_CMD_FLG_CTS_ONLY: send CTS only, no data after that * @TX_CMD_FLG_DUR: disable duration overwriting used in PS-Poll Assoc-id * @TX_CMD_FLG_FW_DROP: FW should mark frame to be dropped * @TX_CMD_FLG_EXEC_PAPD: execute PAPD * @TX_CMD_FLG_PAPD_TYPE: 0 for reference power, 1 for nominal power * @TX_CMD_FLG_HCCA_CHUNK: mark start of TSPEC chunk */ enum iwl_tx_flags { TX_CMD_FLG_PROT_REQUIRE = BIT(0), TX_CMD_FLG_ACK = BIT(3), TX_CMD_FLG_STA_RATE = BIT(4), TX_CMD_FLG_BA = BIT(5), TX_CMD_FLG_BAR = BIT(6), TX_CMD_FLG_TXOP_PROT = BIT(7), TX_CMD_FLG_VHT_NDPA = BIT(8), TX_CMD_FLG_HT_NDPA = BIT(9), TX_CMD_FLG_CSI_FDBK2HOST = BIT(10), TX_CMD_FLG_BT_DIS = BIT(12), TX_CMD_FLG_SEQ_CTL = BIT(13), TX_CMD_FLG_MORE_FRAG = BIT(14), TX_CMD_FLG_NEXT_FRAME = BIT(15), TX_CMD_FLG_TSF = BIT(16), TX_CMD_FLG_CALIB = BIT(17), TX_CMD_FLG_KEEP_SEQ_CTL = BIT(18), TX_CMD_FLG_AGG_START = BIT(19), TX_CMD_FLG_MH_PAD = BIT(20), TX_CMD_FLG_RESP_TO_DRV = BIT(21), TX_CMD_FLG_CCMP_AGG = BIT(22), TX_CMD_FLG_TKIP_MIC_DONE = BIT(23), TX_CMD_FLG_CTS_ONLY = BIT(24), TX_CMD_FLG_DUR = BIT(25), TX_CMD_FLG_FW_DROP = BIT(26), TX_CMD_FLG_EXEC_PAPD = BIT(27), TX_CMD_FLG_PAPD_TYPE = BIT(28), TX_CMD_FLG_HCCA_CHUNK = BIT(31) }; /* TX_FLAGS_BITS_API_S_VER_1 */ /* * TX command security control */ #define TX_CMD_SEC_WEP 0x01 #define TX_CMD_SEC_CCM 0x02 #define TX_CMD_SEC_TKIP 0x03 #define TX_CMD_SEC_WEP_KEY_IDX_POS 6 #define TX_CMD_SEC_WEP_KEY_IDX_MSK 0xc0 #define TX_CMD_SEC_KEY128 0x08 /* TODO: how does these values are OK with only 16 bit variable??? */ /* * TX command next frame info * * bits 0:2 - security control (TX_CMD_SEC_*) * bit 3 - immediate ACK required * bit 4 - rate is taken from STA table * bit 5 - frame belongs to BA stream * bit 6 - immediate BA response expected * bit 7 - unused * bits 8:15 - Station ID * bits 16:31 - rate */ #define TX_CMD_NEXT_FRAME_ACK_MSK (0x8) #define TX_CMD_NEXT_FRAME_STA_RATE_MSK (0x10) #define TX_CMD_NEXT_FRAME_BA_MSK (0x20) #define TX_CMD_NEXT_FRAME_IMM_BA_RSP_MSK (0x40) #define TX_CMD_NEXT_FRAME_FLAGS_MSK (0xf8) #define TX_CMD_NEXT_FRAME_STA_ID_MSK (0xff00) #define TX_CMD_NEXT_FRAME_STA_ID_POS (8) #define TX_CMD_NEXT_FRAME_RATE_MSK (0xffff0000) #define TX_CMD_NEXT_FRAME_RATE_POS (16) /* * TX command Frame life time in us - to be written in pm_frame_timeout */ #define TX_CMD_LIFE_TIME_INFINITE 0xFFFFFFFF #define TX_CMD_LIFE_TIME_DEFAULT 2000000 /* 2000 ms*/ #define TX_CMD_LIFE_TIME_PROBE_RESP 40000 /* 40 ms */ #define TX_CMD_LIFE_TIME_EXPIRED_FRAME 0 /* * TID for non QoS frames - to be written in tid_tspec */ #define IWL_TID_NON_QOS IWL_MAX_TID_COUNT /* * Limits on the retransmissions - to be written in {data,rts}_retry_limit */ #define IWL_DEFAULT_TX_RETRY 15 #define IWL_MGMT_DFAULT_RETRY_LIMIT 3 #define IWL_RTS_DFAULT_RETRY_LIMIT 60 #define IWL_BAR_DFAULT_RETRY_LIMIT 60 #define IWL_LOW_RETRY_LIMIT 7 /* TODO: complete documentation for try_cnt and btkill_cnt */ /** * struct iwl_tx_cmd - TX command struct to FW * ( TX_CMD = 0x1c ) * @len: in bytes of the payload, see below for details * @next_frame_len: same as len, but for next frame (0 if not applicable) * Used for fragmentation and bursting, but not in 11n aggregation. * @tx_flags: combination of TX_CMD_FLG_* * @rate_n_flags: rate for *all* Tx attempts, if TX_CMD_FLG_STA_RATE_MSK is * cleared. Combination of RATE_MCS_* * @sta_id: index of destination station in FW station table * @sec_ctl: security control, TX_CMD_SEC_* * @initial_rate_index: index into the the rate table for initial TX attempt. * Applied if TX_CMD_FLG_STA_RATE_MSK is set, normally 0 for data frames. * @key: security key * @next_frame_flags: TX_CMD_SEC_* and TX_CMD_NEXT_FRAME_* * @life_time: frame life time (usecs??) * @dram_lsb_ptr: Physical address of scratch area in the command (try_cnt + * btkill_cnd + reserved), first 32 bits. "0" disables usage. * @dram_msb_ptr: upper bits of the scratch physical address * @rts_retry_limit: max attempts for RTS * @data_retry_limit: max attempts to send the data packet * @tid_spec: TID/tspec * @pm_frame_timeout: PM TX frame timeout * @driver_txop: duration od EDCA TXOP, in 32-usec units. Set this if not * specified by HCCA protocol * * The byte count (both len and next_frame_len) includes MAC header * (24/26/30/32 bytes) * + 2 bytes pad if 26/30 header size * + 8 byte IV for CCM or TKIP (not used for WEP) * + Data payload * + 8-byte MIC (not used for CCM/WEP) * It does not include post-MAC padding, i.e., * MIC (CCM) 8 bytes, ICV (WEP/TKIP/CKIP) 4 bytes, CRC 4 bytes. * Range of len: 14-2342 bytes. * * After the struct fields the MAC header is placed, plus any padding, * and then the actial payload. */ struct iwl_tx_cmd { __le16 len; __le16 next_frame_len; __le32 tx_flags; /* DRAM_SCRATCH_API_U_VER_1 */ u8 try_cnt; u8 btkill_cnt; __le16 reserved; __le32 rate_n_flags; u8 sta_id; u8 sec_ctl; u8 initial_rate_index; u8 reserved2; u8 key[16]; __le16 next_frame_flags; __le16 reserved3; __le32 life_time; __le32 dram_lsb_ptr; u8 dram_msb_ptr; u8 rts_retry_limit; u8 data_retry_limit; u8 tid_tspec; __le16 pm_frame_timeout; __le16 driver_txop; u8 payload[0]; struct ieee80211_hdr hdr[0]; } __packed; /* TX_CMD_API_S_VER_3 */ /* * TX response related data */ /* * enum iwl_tx_status - status that is returned by the fw after attempts to Tx * @TX_STATUS_SUCCESS: * @TX_STATUS_DIRECT_DONE: * @TX_STATUS_POSTPONE_DELAY: * @TX_STATUS_POSTPONE_FEW_BYTES: * @TX_STATUS_POSTPONE_BT_PRIO: * @TX_STATUS_POSTPONE_QUIET_PERIOD: * @TX_STATUS_POSTPONE_CALC_TTAK: * @TX_STATUS_FAIL_INTERNAL_CROSSED_RETRY: * @TX_STATUS_FAIL_SHORT_LIMIT: * @TX_STATUS_FAIL_LONG_LIMIT: * @TX_STATUS_FAIL_UNDERRUN: * @TX_STATUS_FAIL_DRAIN_FLOW: * @TX_STATUS_FAIL_RFKILL_FLUSH: * @TX_STATUS_FAIL_LIFE_EXPIRE: * @TX_STATUS_FAIL_DEST_PS: * @TX_STATUS_FAIL_HOST_ABORTED: * @TX_STATUS_FAIL_BT_RETRY: * @TX_STATUS_FAIL_STA_INVALID: * @TX_TATUS_FAIL_FRAG_DROPPED: * @TX_STATUS_FAIL_TID_DISABLE: * @TX_STATUS_FAIL_FIFO_FLUSHED: * @TX_STATUS_FAIL_SMALL_CF_POLL: * @TX_STATUS_FAIL_FW_DROP: * @TX_STATUS_FAIL_STA_COLOR_MISMATCH: mismatch between color of Tx cmd and * STA table * @TX_FRAME_STATUS_INTERNAL_ABORT: * @TX_MODE_MSK: * @TX_MODE_NO_BURST: * @TX_MODE_IN_BURST_SEQ: * @TX_MODE_FIRST_IN_BURST: * @TX_QUEUE_NUM_MSK: * * Valid only if frame_count =1 * TODO: complete documentation */ enum iwl_tx_status { TX_STATUS_MSK = 0x000000ff, TX_STATUS_SUCCESS = 0x01, TX_STATUS_DIRECT_DONE = 0x02, /* postpone TX */ TX_STATUS_POSTPONE_DELAY = 0x40, TX_STATUS_POSTPONE_FEW_BYTES = 0x41, TX_STATUS_POSTPONE_BT_PRIO = 0x42, TX_STATUS_POSTPONE_QUIET_PERIOD = 0x43, TX_STATUS_POSTPONE_CALC_TTAK = 0x44, /* abort TX */ TX_STATUS_FAIL_INTERNAL_CROSSED_RETRY = 0x81, TX_STATUS_FAIL_SHORT_LIMIT = 0x82, TX_STATUS_FAIL_LONG_LIMIT = 0x83, TX_STATUS_FAIL_UNDERRUN = 0x84, TX_STATUS_FAIL_DRAIN_FLOW = 0x85, TX_STATUS_FAIL_RFKILL_FLUSH = 0x86, TX_STATUS_FAIL_LIFE_EXPIRE = 0x87, TX_STATUS_FAIL_DEST_PS = 0x88, TX_STATUS_FAIL_HOST_ABORTED = 0x89, TX_STATUS_FAIL_BT_RETRY = 0x8a, TX_STATUS_FAIL_STA_INVALID = 0x8b, TX_STATUS_FAIL_FRAG_DROPPED = 0x8c, TX_STATUS_FAIL_TID_DISABLE = 0x8d, TX_STATUS_FAIL_FIFO_FLUSHED = 0x8e, TX_STATUS_FAIL_SMALL_CF_POLL = 0x8f, TX_STATUS_FAIL_FW_DROP = 0x90, TX_STATUS_FAIL_STA_COLOR_MISMATCH = 0x91, TX_STATUS_INTERNAL_ABORT = 0x92, TX_MODE_MSK = 0x00000f00, TX_MODE_NO_BURST = 0x00000000, TX_MODE_IN_BURST_SEQ = 0x00000100, TX_MODE_FIRST_IN_BURST = 0x00000200, TX_QUEUE_NUM_MSK = 0x0001f000, TX_NARROW_BW_MSK = 0x00060000, TX_NARROW_BW_1DIV2 = 0x00020000, TX_NARROW_BW_1DIV4 = 0x00040000, TX_NARROW_BW_1DIV8 = 0x00060000, }; /* * enum iwl_tx_agg_status - TX aggregation status * @AGG_TX_STATE_STATUS_MSK: * @AGG_TX_STATE_TRANSMITTED: * @AGG_TX_STATE_UNDERRUN: * @AGG_TX_STATE_BT_PRIO: * @AGG_TX_STATE_FEW_BYTES: * @AGG_TX_STATE_ABORT: * @AGG_TX_STATE_LAST_SENT_TTL: * @AGG_TX_STATE_LAST_SENT_TRY_CNT: * @AGG_TX_STATE_LAST_SENT_BT_KILL: * @AGG_TX_STATE_SCD_QUERY: * @AGG_TX_STATE_TEST_BAD_CRC32: * @AGG_TX_STATE_RESPONSE: * @AGG_TX_STATE_DUMP_TX: * @AGG_TX_STATE_DELAY_TX: * @AGG_TX_STATE_TRY_CNT_MSK: Retry count for 1st frame in aggregation (retries * occur if tx failed for this frame when it was a member of a previous * aggregation block). If rate scaling is used, retry count indicates the * rate table entry used for all frames in the new agg. *@ AGG_TX_STATE_SEQ_NUM_MSK: Command ID and sequence number of Tx command for * this frame * * TODO: complete documentation */ enum iwl_tx_agg_status { AGG_TX_STATE_STATUS_MSK = 0x00fff, AGG_TX_STATE_TRANSMITTED = 0x000, AGG_TX_STATE_UNDERRUN = 0x001, AGG_TX_STATE_BT_PRIO = 0x002, AGG_TX_STATE_FEW_BYTES = 0x004, AGG_TX_STATE_ABORT = 0x008, AGG_TX_STATE_LAST_SENT_TTL = 0x010, AGG_TX_STATE_LAST_SENT_TRY_CNT = 0x020, AGG_TX_STATE_LAST_SENT_BT_KILL = 0x040, AGG_TX_STATE_SCD_QUERY = 0x080, AGG_TX_STATE_TEST_BAD_CRC32 = 0x0100, AGG_TX_STATE_RESPONSE = 0x1ff, AGG_TX_STATE_DUMP_TX = 0x200, AGG_TX_STATE_DELAY_TX = 0x400, AGG_TX_STATE_TRY_CNT_POS = 12, AGG_TX_STATE_TRY_CNT_MSK = 0xf << AGG_TX_STATE_TRY_CNT_POS, }; #define AGG_TX_STATE_LAST_SENT_MSK (AGG_TX_STATE_LAST_SENT_TTL| \ AGG_TX_STATE_LAST_SENT_TRY_CNT| \ AGG_TX_STATE_LAST_SENT_BT_KILL) /* * The mask below describes a status where we are absolutely sure that the MPDU * wasn't sent. For BA/Underrun we cannot be that sure. All we know that we've * written the bytes to the TXE, but we know nothing about what the DSP did. */ #define AGG_TX_STAT_FRAME_NOT_SENT (AGG_TX_STATE_FEW_BYTES | \ AGG_TX_STATE_ABORT | \ AGG_TX_STATE_SCD_QUERY) /* * REPLY_TX = 0x1c (response) * * This response may be in one of two slightly different formats, indicated * by the frame_count field: * * 1) No aggregation (frame_count == 1). This reports Tx results for a single * frame. Multiple attempts, at various bit rates, may have been made for * this frame. * * 2) Aggregation (frame_count > 1). This reports Tx results for two or more * frames that used block-acknowledge. All frames were transmitted at * same rate. Rate scaling may have been used if first frame in this new * agg block failed in previous agg block(s). * * Note that, for aggregation, ACK (block-ack) status is not delivered * here; block-ack has not been received by the time the device records * this status. * This status relates to reasons the tx might have been blocked or aborted * within the device, rather than whether it was received successfully by * the destination station. */ /** * struct agg_tx_status - per packet TX aggregation status * @status: enum iwl_tx_agg_status * @sequence: Sequence # for this frame's Tx cmd (not SSN!) */ struct agg_tx_status { __le16 status; __le16 sequence; } __packed; /* * definitions for initial rate index field * bits [3:0] initial rate index * bits [6:4] rate table color, used for the initial rate * bit-7 invalid rate indication */ #define TX_RES_INIT_RATE_INDEX_MSK 0x0f #define TX_RES_RATE_TABLE_COLOR_MSK 0x70 #define TX_RES_INV_RATE_INDEX_MSK 0x80 #define IWL_MVM_TX_RES_GET_TID(_ra_tid) ((_ra_tid) & 0x0f) #define IWL_MVM_TX_RES_GET_RA(_ra_tid) ((_ra_tid) >> 4) /** * struct iwl_mvm_tx_resp - notifies that fw is TXing a packet * ( REPLY_TX = 0x1c ) * @frame_count: 1 no aggregation, >1 aggregation * @bt_kill_count: num of times blocked by bluetooth (unused for agg) * @failure_rts: num of failures due to unsuccessful RTS * @failure_frame: num failures due to no ACK (unused for agg) * @initial_rate: for non-agg: rate of the successful Tx. For agg: rate of the * Tx of all the batch. RATE_MCS_* * @wireless_media_time: for non-agg: RTS + CTS + frame tx attempts time + ACK. * for agg: RTS + CTS + aggregation tx time + block-ack time. * in usec. * @pa_status: tx power info * @pa_integ_res_a: tx power info * @pa_integ_res_b: tx power info * @pa_integ_res_c: tx power info * @measurement_req_id: tx power info * @tfd_info: TFD information set by the FH * @seq_ctl: sequence control from the Tx cmd * @byte_cnt: byte count from the Tx cmd * @tlc_info: TLC rate info * @ra_tid: bits [3:0] = ra, bits [7:4] = tid * @frame_ctrl: frame control * @status: for non-agg: frame status TX_STATUS_* * for agg: status of 1st frame, AGG_TX_STATE_*; other frame status fields * follow this one, up to frame_count. * * After the array of statuses comes the SSN of the SCD. Look at * %iwl_mvm_get_scd_ssn for more details. */ struct iwl_mvm_tx_resp { u8 frame_count; u8 bt_kill_count; u8 failure_rts; u8 failure_frame; __le32 initial_rate; __le16 wireless_media_time; u8 pa_status; u8 pa_integ_res_a[3]; u8 pa_integ_res_b[3]; u8 pa_integ_res_c[3]; __le16 measurement_req_id; __le16 reserved; __le32 tfd_info; __le16 seq_ctl; __le16 byte_cnt; u8 tlc_info; u8 ra_tid; __le16 frame_ctrl; struct agg_tx_status status; } __packed; /* TX_RSP_API_S_VER_3 */ /** * struct iwl_mvm_ba_notif - notifies about reception of BA * ( BA_NOTIF = 0xc5 ) * @sta_addr_lo32: lower 32 bits of the MAC address * @sta_addr_hi16: upper 16 bits of the MAC address * @sta_id: Index of recipient (BA-sending) station in fw's station table * @tid: tid of the session * @seq_ctl: * @bitmap: the bitmap of the BA notification as seen in the air * @scd_flow: the tx queue this BA relates to * @scd_ssn: the index of the last contiguously sent packet * @txed: number of Txed frames in this batch * @txed_2_done: number of Acked frames in this batch */ struct iwl_mvm_ba_notif { __le32 sta_addr_lo32; __le16 sta_addr_hi16; __le16 reserved; u8 sta_id; u8 tid; __le16 seq_ctl; __le64 bitmap; __le16 scd_flow; __le16 scd_ssn; u8 txed; u8 txed_2_done; __le16 reserved1; } __packed; /* * struct iwl_mac_beacon_cmd - beacon template command * @tx: the tx commands associated with the beacon frame * @template_id: currently equal to the mac context id of the coresponding * mac. * @tim_idx: the offset of the tim IE in the beacon * @tim_size: the length of the tim IE * @frame: the template of the beacon frame */ struct iwl_mac_beacon_cmd { struct iwl_tx_cmd tx; __le32 template_id; __le32 tim_idx; __le32 tim_size; struct ieee80211_hdr frame[0]; } __packed; /** * enum iwl_dump_control - dump (flush) control flags * @DUMP_TX_FIFO_FLUSH: Dump MSDUs until the the FIFO is empty * and the TFD queues are empty. */ enum iwl_dump_control { DUMP_TX_FIFO_FLUSH = BIT(1), }; /** * struct iwl_tx_path_flush_cmd -- queue/FIFO flush command * @queues_ctl: bitmap of queues to flush * @flush_ctl: control flags * @reserved: reserved */ struct iwl_tx_path_flush_cmd { __le32 queues_ctl; __le16 flush_ctl; __le16 reserved; } __packed; /* TX_PATH_FLUSH_CMD_API_S_VER_1 */ /** * iwl_mvm_get_scd_ssn - returns the SSN of the SCD * @tx_resp: the Tx response from the fw (agg or non-agg) * * When the fw sends an AMPDU, it fetches the MPDUs one after the other. Since * it can't know that everything will go well until the end of the AMPDU, it * can't know in advance the number of MPDUs that will be sent in the current * batch. This is why it writes the agg Tx response while it fetches the MPDUs. * Hence, it can't know in advance what the SSN of the SCD will be at the end * of the batch. This is why the SSN of the SCD is written at the end of the * whole struct at a variable offset. This function knows how to cope with the * variable offset and returns the SSN of the SCD. */ static inline u32 iwl_mvm_get_scd_ssn(struct iwl_mvm_tx_resp *tx_resp) { return le32_to_cpup((__le32 *)&tx_resp->status + tx_resp->frame_count) & 0xfff; } #endif /* __fw_api_tx_h__ */