1 /******************************************************************************
5 * Copyright(c) 2008 - 2011 Intel Corporation. All rights reserved.
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of version 2 of the GNU General Public License as
9 * published by the Free Software Foundation.
11 * This program is distributed in the hope that it will be useful, but
12 * WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110,
21 * The full GNU General Public License is included in this distribution
22 * in the file called LICENSE.GPL.
24 * Contact Information:
25 * Intel Linux Wireless <ilw@linux.intel.com>
26 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
28 *****************************************************************************/
30 #include <linux/kernel.h>
31 #include <linux/module.h>
32 #include <linux/init.h>
33 #include <linux/sched.h>
39 #include "iwl-helpers.h"
40 #include "iwl-agn-hw.h"
42 #include "iwl-trans.h"
45 * mac80211 queues, ACs, hardware queues, FIFOs.
47 * Cf. http://wireless.kernel.org/en/developers/Documentation/mac80211/queues
49 * Mac80211 uses the following numbers, which we get as from it
50 * by way of skb_get_queue_mapping(skb):
58 * Regular (not A-MPDU) frames are put into hardware queues corresponding
59 * to the FIFOs, see comments in iwl-prph.h. Aggregated frames get their
60 * own queue per aggregation session (RA/TID combination), such queues are
61 * set up to map into FIFOs too, for which we need an AC->FIFO mapping. In
62 * order to map frames to the right queue, we also need an AC->hw queue
63 * mapping. This is implemented here.
65 * Due to the way hw queues are set up (by the hw specific modules like
66 * iwl-4965.c, iwl-5000.c etc.), the AC->hw queue mapping is the identity
70 static const u8 tid_to_ac
[] = {
81 static inline int get_ac_from_tid(u16 tid
)
83 if (likely(tid
< ARRAY_SIZE(tid_to_ac
)))
84 return tid_to_ac
[tid
];
86 /* no support for TIDs 8-15 yet */
90 static inline int get_fifo_from_tid(struct iwl_rxon_context
*ctx
, u16 tid
)
92 if (likely(tid
< ARRAY_SIZE(tid_to_ac
)))
93 return ctx
->ac_to_fifo
[tid_to_ac
[tid
]];
95 /* no support for TIDs 8-15 yet */
100 * iwlagn_txq_update_byte_cnt_tbl - Set up entry in Tx byte-count array
102 void iwlagn_txq_update_byte_cnt_tbl(struct iwl_priv
*priv
,
103 struct iwl_tx_queue
*txq
,
106 struct iwlagn_scd_bc_tbl
*scd_bc_tbl
= priv
->scd_bc_tbls
.addr
;
107 int write_ptr
= txq
->q
.write_ptr
;
108 int txq_id
= txq
->q
.id
;
111 u16 len
= byte_cnt
+ IWL_TX_CRC_SIZE
+ IWL_TX_DELIMITER_SIZE
;
114 WARN_ON(len
> 0xFFF || write_ptr
>= TFD_QUEUE_SIZE_MAX
);
116 sta_id
= txq
->cmd
[txq
->q
.write_ptr
]->cmd
.tx
.sta_id
;
117 sec_ctl
= txq
->cmd
[txq
->q
.write_ptr
]->cmd
.tx
.sec_ctl
;
119 switch (sec_ctl
& TX_CMD_SEC_MSK
) {
123 case TX_CMD_SEC_TKIP
:
127 len
+= WEP_IV_LEN
+ WEP_ICV_LEN
;
131 bc_ent
= cpu_to_le16((len
& 0xFFF) | (sta_id
<< 12));
133 scd_bc_tbl
[txq_id
].tfd_offset
[write_ptr
] = bc_ent
;
135 if (write_ptr
< TFD_QUEUE_SIZE_BC_DUP
)
137 tfd_offset
[TFD_QUEUE_SIZE_MAX
+ write_ptr
] = bc_ent
;
140 static void iwlagn_txq_inval_byte_cnt_tbl(struct iwl_priv
*priv
,
141 struct iwl_tx_queue
*txq
)
143 struct iwlagn_scd_bc_tbl
*scd_bc_tbl
= priv
->scd_bc_tbls
.addr
;
144 int txq_id
= txq
->q
.id
;
145 int read_ptr
= txq
->q
.read_ptr
;
149 WARN_ON(read_ptr
>= TFD_QUEUE_SIZE_MAX
);
151 if (txq_id
!= priv
->cmd_queue
)
152 sta_id
= txq
->cmd
[read_ptr
]->cmd
.tx
.sta_id
;
154 bc_ent
= cpu_to_le16(1 | (sta_id
<< 12));
155 scd_bc_tbl
[txq_id
].tfd_offset
[read_ptr
] = bc_ent
;
157 if (read_ptr
< TFD_QUEUE_SIZE_BC_DUP
)
159 tfd_offset
[TFD_QUEUE_SIZE_MAX
+ read_ptr
] = bc_ent
;
162 static int iwlagn_tx_queue_set_q2ratid(struct iwl_priv
*priv
, u16 ra_tid
,
169 scd_q2ratid
= ra_tid
& IWL_SCD_QUEUE_RA_TID_MAP_RATID_MSK
;
171 tbl_dw_addr
= priv
->scd_base_addr
+
172 IWLAGN_SCD_TRANSLATE_TBL_OFFSET_QUEUE(txq_id
);
174 tbl_dw
= iwl_read_targ_mem(priv
, tbl_dw_addr
);
177 tbl_dw
= (scd_q2ratid
<< 16) | (tbl_dw
& 0x0000FFFF);
179 tbl_dw
= scd_q2ratid
| (tbl_dw
& 0xFFFF0000);
181 iwl_write_targ_mem(priv
, tbl_dw_addr
, tbl_dw
);
186 static void iwlagn_tx_queue_stop_scheduler(struct iwl_priv
*priv
, u16 txq_id
)
188 /* Simply stop the queue, but don't change any configuration;
189 * the SCD_ACT_EN bit is the write-enable mask for the ACTIVE bit. */
191 IWLAGN_SCD_QUEUE_STATUS_BITS(txq_id
),
192 (0 << IWLAGN_SCD_QUEUE_STTS_REG_POS_ACTIVE
)|
193 (1 << IWLAGN_SCD_QUEUE_STTS_REG_POS_SCD_ACT_EN
));
196 void iwlagn_set_wr_ptrs(struct iwl_priv
*priv
,
197 int txq_id
, u32 index
)
199 iwl_write_direct32(priv
, HBUS_TARG_WRPTR
,
200 (index
& 0xff) | (txq_id
<< 8));
201 iwl_write_prph(priv
, IWLAGN_SCD_QUEUE_RDPTR(txq_id
), index
);
204 void iwlagn_tx_queue_set_status(struct iwl_priv
*priv
,
205 struct iwl_tx_queue
*txq
,
206 int tx_fifo_id
, int scd_retry
)
208 int txq_id
= txq
->q
.id
;
209 int active
= test_bit(txq_id
, &priv
->txq_ctx_active_msk
) ? 1 : 0;
211 iwl_write_prph(priv
, IWLAGN_SCD_QUEUE_STATUS_BITS(txq_id
),
212 (active
<< IWLAGN_SCD_QUEUE_STTS_REG_POS_ACTIVE
) |
213 (tx_fifo_id
<< IWLAGN_SCD_QUEUE_STTS_REG_POS_TXF
) |
214 (1 << IWLAGN_SCD_QUEUE_STTS_REG_POS_WSL
) |
215 IWLAGN_SCD_QUEUE_STTS_REG_MSK
);
217 txq
->sched_retry
= scd_retry
;
219 IWL_DEBUG_INFO(priv
, "%s %s Queue %d on FIFO %d\n",
220 active
? "Activate" : "Deactivate",
221 scd_retry
? "BA" : "AC/CMD", txq_id
, tx_fifo_id
);
224 static int iwlagn_txq_agg_enable(struct iwl_priv
*priv
, int txq_id
, int sta_id
, int tid
)
226 if ((IWLAGN_FIRST_AMPDU_QUEUE
> txq_id
) ||
227 (IWLAGN_FIRST_AMPDU_QUEUE
+
228 priv
->cfg
->base_params
->num_of_ampdu_queues
<= txq_id
)) {
230 "queue number out of range: %d, must be %d to %d\n",
231 txq_id
, IWLAGN_FIRST_AMPDU_QUEUE
,
232 IWLAGN_FIRST_AMPDU_QUEUE
+
233 priv
->cfg
->base_params
->num_of_ampdu_queues
- 1);
237 /* Modify device's station table to Tx this TID */
238 return iwl_sta_tx_modify_enable_tid(priv
, sta_id
, tid
);
241 void iwlagn_txq_agg_queue_setup(struct iwl_priv
*priv
,
242 struct ieee80211_sta
*sta
,
243 int tid
, int frame_limit
)
245 int sta_id
, tx_fifo
, txq_id
, ssn_idx
;
248 struct iwl_tid_data
*tid_data
;
250 sta_id
= iwl_sta_id(sta
);
251 if (WARN_ON(sta_id
== IWL_INVALID_STATION
))
253 if (WARN_ON(tid
>= MAX_TID_COUNT
))
256 spin_lock_irqsave(&priv
->sta_lock
, flags
);
257 tid_data
= &priv
->stations
[sta_id
].tid
[tid
];
258 ssn_idx
= SEQ_TO_SN(tid_data
->seq_number
);
259 txq_id
= tid_data
->agg
.txq_id
;
260 tx_fifo
= tid_data
->agg
.tx_fifo
;
261 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
263 ra_tid
= BUILD_RAxTID(sta_id
, tid
);
265 spin_lock_irqsave(&priv
->lock
, flags
);
267 /* Stop this Tx queue before configuring it */
268 iwlagn_tx_queue_stop_scheduler(priv
, txq_id
);
270 /* Map receiver-address / traffic-ID to this queue */
271 iwlagn_tx_queue_set_q2ratid(priv
, ra_tid
, txq_id
);
273 /* Set this queue as a chain-building queue */
274 iwl_set_bits_prph(priv
, IWLAGN_SCD_QUEUECHAIN_SEL
, (1<<txq_id
));
276 /* enable aggregations for the queue */
277 iwl_set_bits_prph(priv
, IWLAGN_SCD_AGGR_SEL
, (1<<txq_id
));
279 /* Place first TFD at index corresponding to start sequence number.
280 * Assumes that ssn_idx is valid (!= 0xFFF) */
281 priv
->txq
[txq_id
].q
.read_ptr
= (ssn_idx
& 0xff);
282 priv
->txq
[txq_id
].q
.write_ptr
= (ssn_idx
& 0xff);
283 iwlagn_set_wr_ptrs(priv
, txq_id
, ssn_idx
);
285 /* Set up Tx window size and frame limit for this queue */
286 iwl_write_targ_mem(priv
, priv
->scd_base_addr
+
287 IWLAGN_SCD_CONTEXT_QUEUE_OFFSET(txq_id
) +
290 IWLAGN_SCD_QUEUE_CTX_REG2_WIN_SIZE_POS
) &
291 IWLAGN_SCD_QUEUE_CTX_REG2_WIN_SIZE_MSK
) |
293 IWLAGN_SCD_QUEUE_CTX_REG2_FRAME_LIMIT_POS
) &
294 IWLAGN_SCD_QUEUE_CTX_REG2_FRAME_LIMIT_MSK
));
296 iwl_set_bits_prph(priv
, IWLAGN_SCD_INTERRUPT_MASK
, (1 << txq_id
));
298 /* Set up Status area in SRAM, map to Tx DMA/FIFO, activate the queue */
299 iwlagn_tx_queue_set_status(priv
, &priv
->txq
[txq_id
], tx_fifo
, 1);
301 spin_unlock_irqrestore(&priv
->lock
, flags
);
304 static int iwlagn_txq_agg_disable(struct iwl_priv
*priv
, u16 txq_id
,
305 u16 ssn_idx
, u8 tx_fifo
)
307 if ((IWLAGN_FIRST_AMPDU_QUEUE
> txq_id
) ||
308 (IWLAGN_FIRST_AMPDU_QUEUE
+
309 priv
->cfg
->base_params
->num_of_ampdu_queues
<= txq_id
)) {
311 "queue number out of range: %d, must be %d to %d\n",
312 txq_id
, IWLAGN_FIRST_AMPDU_QUEUE
,
313 IWLAGN_FIRST_AMPDU_QUEUE
+
314 priv
->cfg
->base_params
->num_of_ampdu_queues
- 1);
318 iwlagn_tx_queue_stop_scheduler(priv
, txq_id
);
320 iwl_clear_bits_prph(priv
, IWLAGN_SCD_AGGR_SEL
, (1 << txq_id
));
322 priv
->txq
[txq_id
].q
.read_ptr
= (ssn_idx
& 0xff);
323 priv
->txq
[txq_id
].q
.write_ptr
= (ssn_idx
& 0xff);
324 /* supposes that ssn_idx is valid (!= 0xFFF) */
325 iwlagn_set_wr_ptrs(priv
, txq_id
, ssn_idx
);
327 iwl_clear_bits_prph(priv
, IWLAGN_SCD_INTERRUPT_MASK
, (1 << txq_id
));
328 iwl_txq_ctx_deactivate(priv
, txq_id
);
329 iwlagn_tx_queue_set_status(priv
, &priv
->txq
[txq_id
], tx_fifo
, 0);
335 * Activate/Deactivate Tx DMA/FIFO channels according tx fifos mask
336 * must be called under priv->lock and mac access
338 void iwlagn_txq_set_sched(struct iwl_priv
*priv
, u32 mask
)
340 iwl_write_prph(priv
, IWLAGN_SCD_TXFACT
, mask
);
343 static void iwlagn_tx_cmd_protection(struct iwl_priv
*priv
,
344 struct ieee80211_tx_info
*info
,
345 __le16 fc
, __le32
*tx_flags
)
347 if (info
->control
.rates
[0].flags
& IEEE80211_TX_RC_USE_RTS_CTS
||
348 info
->control
.rates
[0].flags
& IEEE80211_TX_RC_USE_CTS_PROTECT
||
349 info
->flags
& IEEE80211_TX_CTL_AMPDU
)
350 *tx_flags
|= TX_CMD_FLG_PROT_REQUIRE_MSK
;
354 * handle build REPLY_TX command notification.
356 static void iwlagn_tx_cmd_build_basic(struct iwl_priv
*priv
,
358 struct iwl_tx_cmd
*tx_cmd
,
359 struct ieee80211_tx_info
*info
,
360 struct ieee80211_hdr
*hdr
,
363 __le16 fc
= hdr
->frame_control
;
364 __le32 tx_flags
= tx_cmd
->tx_flags
;
366 tx_cmd
->stop_time
.life_time
= TX_CMD_LIFE_TIME_INFINITE
;
367 if (!(info
->flags
& IEEE80211_TX_CTL_NO_ACK
)) {
368 tx_flags
|= TX_CMD_FLG_ACK_MSK
;
369 if (ieee80211_is_mgmt(fc
))
370 tx_flags
|= TX_CMD_FLG_SEQ_CTL_MSK
;
371 if (ieee80211_is_probe_resp(fc
) &&
372 !(le16_to_cpu(hdr
->seq_ctrl
) & 0xf))
373 tx_flags
|= TX_CMD_FLG_TSF_MSK
;
375 tx_flags
&= (~TX_CMD_FLG_ACK_MSK
);
376 tx_flags
|= TX_CMD_FLG_SEQ_CTL_MSK
;
379 if (ieee80211_is_back_req(fc
))
380 tx_flags
|= TX_CMD_FLG_ACK_MSK
| TX_CMD_FLG_IMM_BA_RSP_MASK
;
381 else if (info
->band
== IEEE80211_BAND_2GHZ
&&
382 priv
->cfg
->bt_params
&&
383 priv
->cfg
->bt_params
->advanced_bt_coexist
&&
384 (ieee80211_is_auth(fc
) || ieee80211_is_assoc_req(fc
) ||
385 ieee80211_is_reassoc_req(fc
) ||
386 skb
->protocol
== cpu_to_be16(ETH_P_PAE
)))
387 tx_flags
|= TX_CMD_FLG_IGNORE_BT
;
390 tx_cmd
->sta_id
= std_id
;
391 if (ieee80211_has_morefrags(fc
))
392 tx_flags
|= TX_CMD_FLG_MORE_FRAG_MSK
;
394 if (ieee80211_is_data_qos(fc
)) {
395 u8
*qc
= ieee80211_get_qos_ctl(hdr
);
396 tx_cmd
->tid_tspec
= qc
[0] & 0xf;
397 tx_flags
&= ~TX_CMD_FLG_SEQ_CTL_MSK
;
399 tx_flags
|= TX_CMD_FLG_SEQ_CTL_MSK
;
402 iwlagn_tx_cmd_protection(priv
, info
, fc
, &tx_flags
);
404 tx_flags
&= ~(TX_CMD_FLG_ANT_SEL_MSK
);
405 if (ieee80211_is_mgmt(fc
)) {
406 if (ieee80211_is_assoc_req(fc
) || ieee80211_is_reassoc_req(fc
))
407 tx_cmd
->timeout
.pm_frame_timeout
= cpu_to_le16(3);
409 tx_cmd
->timeout
.pm_frame_timeout
= cpu_to_le16(2);
411 tx_cmd
->timeout
.pm_frame_timeout
= 0;
414 tx_cmd
->driver_txop
= 0;
415 tx_cmd
->tx_flags
= tx_flags
;
416 tx_cmd
->next_frame_len
= 0;
419 #define RTS_DFAULT_RETRY_LIMIT 60
421 static void iwlagn_tx_cmd_build_rate(struct iwl_priv
*priv
,
422 struct iwl_tx_cmd
*tx_cmd
,
423 struct ieee80211_tx_info
*info
,
432 /* Set retry limit on DATA packets and Probe Responses*/
433 if (ieee80211_is_probe_resp(fc
))
434 data_retry_limit
= 3;
436 data_retry_limit
= IWLAGN_DEFAULT_TX_RETRY
;
437 tx_cmd
->data_retry_limit
= data_retry_limit
;
439 /* Set retry limit on RTS packets */
440 rts_retry_limit
= RTS_DFAULT_RETRY_LIMIT
;
441 if (data_retry_limit
< rts_retry_limit
)
442 rts_retry_limit
= data_retry_limit
;
443 tx_cmd
->rts_retry_limit
= rts_retry_limit
;
445 /* DATA packets will use the uCode station table for rate/antenna
447 if (ieee80211_is_data(fc
)) {
448 tx_cmd
->initial_rate_index
= 0;
449 tx_cmd
->tx_flags
|= TX_CMD_FLG_STA_RATE_MSK
;
450 if (priv
->tm_fixed_rate
) {
452 * rate overwrite by testmode
453 * we not only send lq command to change rate
454 * we also re-enforce per data pkt base.
456 tx_cmd
->tx_flags
&= ~TX_CMD_FLG_STA_RATE_MSK
;
457 memcpy(&tx_cmd
->rate_n_flags
, &priv
->tm_fixed_rate
,
458 sizeof(tx_cmd
->rate_n_flags
));
464 * If the current TX rate stored in mac80211 has the MCS bit set, it's
465 * not really a TX rate. Thus, we use the lowest supported rate for
466 * this band. Also use the lowest supported rate if the stored rate
469 rate_idx
= info
->control
.rates
[0].idx
;
470 if (info
->control
.rates
[0].flags
& IEEE80211_TX_RC_MCS
||
471 (rate_idx
< 0) || (rate_idx
> IWL_RATE_COUNT_LEGACY
))
472 rate_idx
= rate_lowest_index(&priv
->bands
[info
->band
],
474 /* For 5 GHZ band, remap mac80211 rate indices into driver indices */
475 if (info
->band
== IEEE80211_BAND_5GHZ
)
476 rate_idx
+= IWL_FIRST_OFDM_RATE
;
477 /* Get PLCP rate for tx_cmd->rate_n_flags */
478 rate_plcp
= iwl_rates
[rate_idx
].plcp
;
479 /* Zero out flags for this packet */
482 /* Set CCK flag as needed */
483 if ((rate_idx
>= IWL_FIRST_CCK_RATE
) && (rate_idx
<= IWL_LAST_CCK_RATE
))
484 rate_flags
|= RATE_MCS_CCK_MSK
;
486 /* Set up antennas */
487 if (priv
->cfg
->bt_params
&&
488 priv
->cfg
->bt_params
->advanced_bt_coexist
&&
489 priv
->bt_full_concurrent
) {
490 /* operated as 1x1 in full concurrency mode */
491 priv
->mgmt_tx_ant
= iwl_toggle_tx_ant(priv
, priv
->mgmt_tx_ant
,
492 first_antenna(priv
->hw_params
.valid_tx_ant
));
494 priv
->mgmt_tx_ant
= iwl_toggle_tx_ant(priv
, priv
->mgmt_tx_ant
,
495 priv
->hw_params
.valid_tx_ant
);
496 rate_flags
|= iwl_ant_idx_to_flags(priv
->mgmt_tx_ant
);
498 /* Set the rate in the TX cmd */
499 tx_cmd
->rate_n_flags
= iwl_hw_set_rate_n_flags(rate_plcp
, rate_flags
);
502 static void iwlagn_tx_cmd_build_hwcrypto(struct iwl_priv
*priv
,
503 struct ieee80211_tx_info
*info
,
504 struct iwl_tx_cmd
*tx_cmd
,
505 struct sk_buff
*skb_frag
,
508 struct ieee80211_key_conf
*keyconf
= info
->control
.hw_key
;
510 switch (keyconf
->cipher
) {
511 case WLAN_CIPHER_SUITE_CCMP
:
512 tx_cmd
->sec_ctl
= TX_CMD_SEC_CCM
;
513 memcpy(tx_cmd
->key
, keyconf
->key
, keyconf
->keylen
);
514 if (info
->flags
& IEEE80211_TX_CTL_AMPDU
)
515 tx_cmd
->tx_flags
|= TX_CMD_FLG_AGG_CCMP_MSK
;
516 IWL_DEBUG_TX(priv
, "tx_cmd with AES hwcrypto\n");
519 case WLAN_CIPHER_SUITE_TKIP
:
520 tx_cmd
->sec_ctl
= TX_CMD_SEC_TKIP
;
521 ieee80211_get_tkip_p2k(keyconf
, skb_frag
, tx_cmd
->key
);
522 IWL_DEBUG_TX(priv
, "tx_cmd with tkip hwcrypto\n");
525 case WLAN_CIPHER_SUITE_WEP104
:
526 tx_cmd
->sec_ctl
|= TX_CMD_SEC_KEY128
;
528 case WLAN_CIPHER_SUITE_WEP40
:
529 tx_cmd
->sec_ctl
|= (TX_CMD_SEC_WEP
|
530 (keyconf
->keyidx
& TX_CMD_SEC_MSK
) << TX_CMD_SEC_SHIFT
);
532 memcpy(&tx_cmd
->key
[3], keyconf
->key
, keyconf
->keylen
);
534 IWL_DEBUG_TX(priv
, "Configuring packet for WEP encryption "
535 "with key %d\n", keyconf
->keyidx
);
539 IWL_ERR(priv
, "Unknown encode cipher %x\n", keyconf
->cipher
);
545 * start REPLY_TX command process
547 int iwlagn_tx_skb(struct iwl_priv
*priv
, struct sk_buff
*skb
)
549 struct ieee80211_hdr
*hdr
= (struct ieee80211_hdr
*)skb
->data
;
550 struct ieee80211_tx_info
*info
= IEEE80211_SKB_CB(skb
);
551 struct iwl_station_priv
*sta_priv
= NULL
;
552 struct iwl_rxon_context
*ctx
= &priv
->contexts
[IWL_RXON_CTX_BSS
];
553 struct iwl_tx_cmd
*tx_cmd
;
566 * If the frame needs to go out off-channel, then
567 * we'll have put the PAN context to that channel,
568 * so make the frame go out there.
570 if (info
->flags
& IEEE80211_TX_CTL_TX_OFFCHAN
)
571 ctx
= &priv
->contexts
[IWL_RXON_CTX_PAN
];
572 else if (info
->control
.vif
)
573 ctx
= iwl_rxon_ctx_from_vif(info
->control
.vif
);
575 spin_lock_irqsave(&priv
->lock
, flags
);
576 if (iwl_is_rfkill(priv
)) {
577 IWL_DEBUG_DROP(priv
, "Dropping - RF KILL\n");
578 goto drop_unlock_priv
;
581 fc
= hdr
->frame_control
;
583 #ifdef CONFIG_IWLWIFI_DEBUG
584 if (ieee80211_is_auth(fc
))
585 IWL_DEBUG_TX(priv
, "Sending AUTH frame\n");
586 else if (ieee80211_is_assoc_req(fc
))
587 IWL_DEBUG_TX(priv
, "Sending ASSOC frame\n");
588 else if (ieee80211_is_reassoc_req(fc
))
589 IWL_DEBUG_TX(priv
, "Sending REASSOC frame\n");
592 hdr_len
= ieee80211_hdrlen(fc
);
594 /* For management frames use broadcast id to do not break aggregation */
595 if (!ieee80211_is_data(fc
))
596 sta_id
= ctx
->bcast_sta_id
;
598 /* Find index into station table for destination station */
599 sta_id
= iwl_sta_id_or_broadcast(priv
, ctx
, info
->control
.sta
);
600 if (sta_id
== IWL_INVALID_STATION
) {
601 IWL_DEBUG_DROP(priv
, "Dropping - INVALID STATION: %pM\n",
603 goto drop_unlock_priv
;
607 IWL_DEBUG_TX(priv
, "station Id %d\n", sta_id
);
609 if (info
->control
.sta
)
610 sta_priv
= (void *)info
->control
.sta
->drv_priv
;
612 if (sta_priv
&& sta_priv
->asleep
&&
613 (info
->flags
& IEEE80211_TX_CTL_PSPOLL_RESPONSE
)) {
615 * This sends an asynchronous command to the device,
616 * but we can rely on it being processed before the
617 * next frame is processed -- and the next frame to
618 * this station is the one that will consume this
620 * For now set the counter to just 1 since we do not
623 iwl_sta_modify_sleep_tx_count(priv
, sta_id
, 1);
627 * Send this frame after DTIM -- there's a special queue
628 * reserved for this for contexts that support AP mode.
630 if (info
->flags
& IEEE80211_TX_CTL_SEND_AFTER_DTIM
) {
631 txq_id
= ctx
->mcast_queue
;
633 * The microcode will clear the more data
634 * bit in the last frame it transmits.
636 hdr
->frame_control
|=
637 cpu_to_le16(IEEE80211_FCTL_MOREDATA
);
639 txq_id
= ctx
->ac_to_queue
[skb_get_queue_mapping(skb
)];
641 /* irqs already disabled/saved above when locking priv->lock */
642 spin_lock(&priv
->sta_lock
);
644 if (ieee80211_is_data_qos(fc
)) {
646 qc
= ieee80211_get_qos_ctl(hdr
);
647 tid
= qc
[0] & IEEE80211_QOS_CTL_TID_MASK
;
649 if (WARN_ON_ONCE(tid
>= MAX_TID_COUNT
))
650 goto drop_unlock_sta
;
652 seq_number
= priv
->stations
[sta_id
].tid
[tid
].seq_number
;
653 seq_number
&= IEEE80211_SCTL_SEQ
;
654 hdr
->seq_ctrl
= hdr
->seq_ctrl
&
655 cpu_to_le16(IEEE80211_SCTL_FRAG
);
656 hdr
->seq_ctrl
|= cpu_to_le16(seq_number
);
658 /* aggregation is on for this <sta,tid> */
659 if (info
->flags
& IEEE80211_TX_CTL_AMPDU
&&
660 priv
->stations
[sta_id
].tid
[tid
].agg
.state
== IWL_AGG_ON
) {
661 txq_id
= priv
->stations
[sta_id
].tid
[tid
].agg
.txq_id
;
666 tx_cmd
= trans_get_tx_cmd(priv
, txq_id
);
667 if (unlikely(!tx_cmd
))
668 goto drop_unlock_sta
;
670 /* Copy MAC header from skb into command buffer */
671 memcpy(tx_cmd
->hdr
, hdr
, hdr_len
);
673 /* Total # bytes to be transmitted */
675 tx_cmd
->len
= cpu_to_le16(len
);
677 if (info
->control
.hw_key
)
678 iwlagn_tx_cmd_build_hwcrypto(priv
, info
, tx_cmd
, skb
, sta_id
);
680 /* TODO need this for burst mode later on */
681 iwlagn_tx_cmd_build_basic(priv
, skb
, tx_cmd
, info
, hdr
, sta_id
);
682 iwl_dbg_log_tx_data_frame(priv
, len
, hdr
);
684 iwlagn_tx_cmd_build_rate(priv
, tx_cmd
, info
, fc
);
686 iwl_update_stats(priv
, true, fc
, len
);
688 if (trans_tx(priv
, skb
, tx_cmd
, txq_id
, fc
, is_agg
, ctx
))
689 goto drop_unlock_sta
;
691 if (ieee80211_is_data_qos(fc
)) {
692 priv
->stations
[sta_id
].tid
[tid
].tfds_in_queue
++;
693 if (!ieee80211_has_morefrags(fc
))
694 priv
->stations
[sta_id
].tid
[tid
].seq_number
= seq_number
;
697 spin_unlock(&priv
->sta_lock
);
698 spin_unlock_irqrestore(&priv
->lock
, flags
);
701 * Avoid atomic ops if it isn't an associated client.
702 * Also, if this is a packet for aggregation, don't
703 * increase the counter because the ucode will stop
704 * aggregation queues when their respective station
707 if (sta_priv
&& sta_priv
->client
&& !is_agg
)
708 atomic_inc(&sta_priv
->pending_frames
);
713 spin_unlock(&priv
->sta_lock
);
715 spin_unlock_irqrestore(&priv
->lock
, flags
);
720 * Find first available (lowest unused) Tx Queue, mark it "active".
721 * Called only when finding queue for aggregation.
722 * Should never return anything < 7, because they should already
723 * be in use as EDCA AC (0-3), Command (4), reserved (5, 6)
725 static int iwlagn_txq_ctx_activate_free(struct iwl_priv
*priv
)
729 for (txq_id
= 0; txq_id
< priv
->hw_params
.max_txq_num
; txq_id
++)
730 if (!test_and_set_bit(txq_id
, &priv
->txq_ctx_active_msk
))
735 int iwlagn_tx_agg_start(struct iwl_priv
*priv
, struct ieee80211_vif
*vif
,
736 struct ieee80211_sta
*sta
, u16 tid
, u16
*ssn
)
743 struct iwl_tid_data
*tid_data
;
745 tx_fifo
= get_fifo_from_tid(iwl_rxon_ctx_from_vif(vif
), tid
);
746 if (unlikely(tx_fifo
< 0))
749 IWL_DEBUG_HT(priv
, "TX AGG request on ra = %pM tid = %d\n",
752 sta_id
= iwl_sta_id(sta
);
753 if (sta_id
== IWL_INVALID_STATION
) {
754 IWL_ERR(priv
, "Start AGG on invalid station\n");
757 if (unlikely(tid
>= MAX_TID_COUNT
))
760 if (priv
->stations
[sta_id
].tid
[tid
].agg
.state
!= IWL_AGG_OFF
) {
761 IWL_ERR(priv
, "Start AGG when state is not IWL_AGG_OFF !\n");
765 txq_id
= iwlagn_txq_ctx_activate_free(priv
);
767 IWL_ERR(priv
, "No free aggregation queue available\n");
771 spin_lock_irqsave(&priv
->sta_lock
, flags
);
772 tid_data
= &priv
->stations
[sta_id
].tid
[tid
];
773 *ssn
= SEQ_TO_SN(tid_data
->seq_number
);
774 tid_data
->agg
.txq_id
= txq_id
;
775 tid_data
->agg
.tx_fifo
= tx_fifo
;
776 iwl_set_swq_id(&priv
->txq
[txq_id
], get_ac_from_tid(tid
), txq_id
);
777 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
779 ret
= iwlagn_txq_agg_enable(priv
, txq_id
, sta_id
, tid
);
783 spin_lock_irqsave(&priv
->sta_lock
, flags
);
784 tid_data
= &priv
->stations
[sta_id
].tid
[tid
];
785 if (tid_data
->tfds_in_queue
== 0) {
786 IWL_DEBUG_HT(priv
, "HW queue is empty\n");
787 tid_data
->agg
.state
= IWL_AGG_ON
;
788 ieee80211_start_tx_ba_cb_irqsafe(vif
, sta
->addr
, tid
);
790 IWL_DEBUG_HT(priv
, "HW queue is NOT empty: %d packets in HW queue\n",
791 tid_data
->tfds_in_queue
);
792 tid_data
->agg
.state
= IWL_EMPTYING_HW_QUEUE_ADDBA
;
794 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
798 int iwlagn_tx_agg_stop(struct iwl_priv
*priv
, struct ieee80211_vif
*vif
,
799 struct ieee80211_sta
*sta
, u16 tid
)
801 int tx_fifo_id
, txq_id
, sta_id
, ssn
;
802 struct iwl_tid_data
*tid_data
;
803 int write_ptr
, read_ptr
;
806 tx_fifo_id
= get_fifo_from_tid(iwl_rxon_ctx_from_vif(vif
), tid
);
807 if (unlikely(tx_fifo_id
< 0))
810 sta_id
= iwl_sta_id(sta
);
812 if (sta_id
== IWL_INVALID_STATION
) {
813 IWL_ERR(priv
, "Invalid station for AGG tid %d\n", tid
);
817 spin_lock_irqsave(&priv
->sta_lock
, flags
);
819 tid_data
= &priv
->stations
[sta_id
].tid
[tid
];
820 ssn
= (tid_data
->seq_number
& IEEE80211_SCTL_SEQ
) >> 4;
821 txq_id
= tid_data
->agg
.txq_id
;
823 switch (priv
->stations
[sta_id
].tid
[tid
].agg
.state
) {
824 case IWL_EMPTYING_HW_QUEUE_ADDBA
:
826 * This can happen if the peer stops aggregation
827 * again before we've had a chance to drain the
828 * queue we selected previously, i.e. before the
829 * session was really started completely.
831 IWL_DEBUG_HT(priv
, "AGG stop before setup done\n");
836 IWL_WARN(priv
, "Stopping AGG while state not ON or starting\n");
839 write_ptr
= priv
->txq
[txq_id
].q
.write_ptr
;
840 read_ptr
= priv
->txq
[txq_id
].q
.read_ptr
;
842 /* The queue is not empty */
843 if (write_ptr
!= read_ptr
) {
844 IWL_DEBUG_HT(priv
, "Stopping a non empty AGG HW QUEUE\n");
845 priv
->stations
[sta_id
].tid
[tid
].agg
.state
=
846 IWL_EMPTYING_HW_QUEUE_DELBA
;
847 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
851 IWL_DEBUG_HT(priv
, "HW queue is empty\n");
853 priv
->stations
[sta_id
].tid
[tid
].agg
.state
= IWL_AGG_OFF
;
855 /* do not restore/save irqs */
856 spin_unlock(&priv
->sta_lock
);
857 spin_lock(&priv
->lock
);
860 * the only reason this call can fail is queue number out of range,
861 * which can happen if uCode is reloaded and all the station
862 * information are lost. if it is outside the range, there is no need
863 * to deactivate the uCode queue, just return "success" to allow
864 * mac80211 to clean up it own data.
866 iwlagn_txq_agg_disable(priv
, txq_id
, ssn
, tx_fifo_id
);
867 spin_unlock_irqrestore(&priv
->lock
, flags
);
869 ieee80211_stop_tx_ba_cb_irqsafe(vif
, sta
->addr
, tid
);
874 int iwlagn_txq_check_empty(struct iwl_priv
*priv
,
875 int sta_id
, u8 tid
, int txq_id
)
877 struct iwl_queue
*q
= &priv
->txq
[txq_id
].q
;
878 u8
*addr
= priv
->stations
[sta_id
].sta
.sta
.addr
;
879 struct iwl_tid_data
*tid_data
= &priv
->stations
[sta_id
].tid
[tid
];
880 struct iwl_rxon_context
*ctx
;
882 ctx
= &priv
->contexts
[priv
->stations
[sta_id
].ctxid
];
884 lockdep_assert_held(&priv
->sta_lock
);
886 switch (priv
->stations
[sta_id
].tid
[tid
].agg
.state
) {
887 case IWL_EMPTYING_HW_QUEUE_DELBA
:
888 /* We are reclaiming the last packet of the */
889 /* aggregated HW queue */
890 if ((txq_id
== tid_data
->agg
.txq_id
) &&
891 (q
->read_ptr
== q
->write_ptr
)) {
892 u16 ssn
= SEQ_TO_SN(tid_data
->seq_number
);
893 int tx_fifo
= get_fifo_from_tid(ctx
, tid
);
894 IWL_DEBUG_HT(priv
, "HW queue empty: continue DELBA flow\n");
895 iwlagn_txq_agg_disable(priv
, txq_id
, ssn
, tx_fifo
);
896 tid_data
->agg
.state
= IWL_AGG_OFF
;
897 ieee80211_stop_tx_ba_cb_irqsafe(ctx
->vif
, addr
, tid
);
900 case IWL_EMPTYING_HW_QUEUE_ADDBA
:
901 /* We are reclaiming the last packet of the queue */
902 if (tid_data
->tfds_in_queue
== 0) {
903 IWL_DEBUG_HT(priv
, "HW queue empty: continue ADDBA flow\n");
904 tid_data
->agg
.state
= IWL_AGG_ON
;
905 ieee80211_start_tx_ba_cb_irqsafe(ctx
->vif
, addr
, tid
);
913 static void iwlagn_non_agg_tx_status(struct iwl_priv
*priv
,
914 struct iwl_rxon_context
*ctx
,
917 struct ieee80211_sta
*sta
;
918 struct iwl_station_priv
*sta_priv
;
921 sta
= ieee80211_find_sta(ctx
->vif
, addr1
);
923 sta_priv
= (void *)sta
->drv_priv
;
924 /* avoid atomic ops if this isn't a client */
925 if (sta_priv
->client
&&
926 atomic_dec_return(&sta_priv
->pending_frames
) == 0)
927 ieee80211_sta_block_awake(priv
->hw
, sta
, false);
932 static void iwlagn_tx_status(struct iwl_priv
*priv
, struct iwl_tx_info
*tx_info
,
935 struct ieee80211_hdr
*hdr
= (struct ieee80211_hdr
*) tx_info
->skb
->data
;
938 iwlagn_non_agg_tx_status(priv
, tx_info
->ctx
, hdr
->addr1
);
940 ieee80211_tx_status_irqsafe(priv
->hw
, tx_info
->skb
);
943 int iwlagn_tx_queue_reclaim(struct iwl_priv
*priv
, int txq_id
, int index
)
945 struct iwl_tx_queue
*txq
= &priv
->txq
[txq_id
];
946 struct iwl_queue
*q
= &txq
->q
;
947 struct iwl_tx_info
*tx_info
;
949 struct ieee80211_hdr
*hdr
;
951 if ((index
>= q
->n_bd
) || (iwl_queue_used(q
, index
) == 0)) {
952 IWL_ERR(priv
, "%s: Read index for DMA queue txq id (%d), "
953 "index %d is out of range [0-%d] %d %d.\n", __func__
,
954 txq_id
, index
, q
->n_bd
, q
->write_ptr
, q
->read_ptr
);
958 for (index
= iwl_queue_inc_wrap(index
, q
->n_bd
);
959 q
->read_ptr
!= index
;
960 q
->read_ptr
= iwl_queue_inc_wrap(q
->read_ptr
, q
->n_bd
)) {
962 tx_info
= &txq
->txb
[txq
->q
.read_ptr
];
964 if (WARN_ON_ONCE(tx_info
->skb
== NULL
))
967 hdr
= (struct ieee80211_hdr
*)tx_info
->skb
->data
;
968 if (ieee80211_is_data_qos(hdr
->frame_control
))
971 iwlagn_tx_status(priv
, tx_info
,
972 txq_id
>= IWLAGN_FIRST_AMPDU_QUEUE
);
975 iwlagn_txq_inval_byte_cnt_tbl(priv
, txq
);
977 iwlagn_txq_free_tfd(priv
, txq
, txq
->q
.read_ptr
);
983 * iwlagn_tx_status_reply_compressed_ba - Update tx status from block-ack
985 * Go through block-ack's bitmap of ACK'd frames, update driver's record of
986 * ACK vs. not. This gets sent to mac80211, then to rate scaling algo.
988 static int iwlagn_tx_status_reply_compressed_ba(struct iwl_priv
*priv
,
989 struct iwl_ht_agg
*agg
,
990 struct iwl_compressed_ba_resp
*ba_resp
)
994 u16 seq_ctl
= le16_to_cpu(ba_resp
->seq_ctl
);
995 u16 scd_flow
= le16_to_cpu(ba_resp
->scd_flow
);
996 struct ieee80211_tx_info
*info
;
997 u64 bitmap
, sent_bitmap
;
999 if (unlikely(!agg
->wait_for_ba
)) {
1000 if (unlikely(ba_resp
->bitmap
))
1001 IWL_ERR(priv
, "Received BA when not expected\n");
1005 /* Mark that the expected block-ack response arrived */
1006 agg
->wait_for_ba
= 0;
1007 IWL_DEBUG_TX_REPLY(priv
, "BA %d %d\n", agg
->start_idx
, ba_resp
->seq_ctl
);
1009 /* Calculate shift to align block-ack bits with our Tx window bits */
1010 sh
= agg
->start_idx
- SEQ_TO_INDEX(seq_ctl
>> 4);
1015 * Check for success or failure according to the
1016 * transmitted bitmap and block-ack bitmap
1018 bitmap
= le64_to_cpu(ba_resp
->bitmap
) >> sh
;
1019 sent_bitmap
= bitmap
& agg
->bitmap
;
1021 /* Sanity check values reported by uCode */
1022 if (ba_resp
->txed_2_done
> ba_resp
->txed
) {
1023 IWL_DEBUG_TX_REPLY(priv
,
1024 "bogus sent(%d) and ack(%d) count\n",
1025 ba_resp
->txed
, ba_resp
->txed_2_done
);
1027 * set txed_2_done = txed,
1028 * so it won't impact rate scale
1030 ba_resp
->txed
= ba_resp
->txed_2_done
;
1032 IWL_DEBUG_HT(priv
, "agg frames sent:%d, acked:%d\n",
1033 ba_resp
->txed
, ba_resp
->txed_2_done
);
1035 /* Find the first ACKed frame to store the TX status */
1036 while (sent_bitmap
&& !(sent_bitmap
& 1)) {
1037 agg
->start_idx
= (agg
->start_idx
+ 1) & 0xff;
1041 info
= IEEE80211_SKB_CB(priv
->txq
[scd_flow
].txb
[agg
->start_idx
].skb
);
1042 memset(&info
->status
, 0, sizeof(info
->status
));
1043 info
->flags
|= IEEE80211_TX_STAT_ACK
;
1044 info
->flags
|= IEEE80211_TX_STAT_AMPDU
;
1045 info
->status
.ampdu_ack_len
= ba_resp
->txed_2_done
;
1046 info
->status
.ampdu_len
= ba_resp
->txed
;
1047 iwlagn_hwrate_to_tx_control(priv
, agg
->rate_n_flags
, info
);
1053 * translate ucode response to mac80211 tx status control values
1055 void iwlagn_hwrate_to_tx_control(struct iwl_priv
*priv
, u32 rate_n_flags
,
1056 struct ieee80211_tx_info
*info
)
1058 struct ieee80211_tx_rate
*r
= &info
->control
.rates
[0];
1060 info
->antenna_sel_tx
=
1061 ((rate_n_flags
& RATE_MCS_ANT_ABC_MSK
) >> RATE_MCS_ANT_POS
);
1062 if (rate_n_flags
& RATE_MCS_HT_MSK
)
1063 r
->flags
|= IEEE80211_TX_RC_MCS
;
1064 if (rate_n_flags
& RATE_MCS_GF_MSK
)
1065 r
->flags
|= IEEE80211_TX_RC_GREEN_FIELD
;
1066 if (rate_n_flags
& RATE_MCS_HT40_MSK
)
1067 r
->flags
|= IEEE80211_TX_RC_40_MHZ_WIDTH
;
1068 if (rate_n_flags
& RATE_MCS_DUP_MSK
)
1069 r
->flags
|= IEEE80211_TX_RC_DUP_DATA
;
1070 if (rate_n_flags
& RATE_MCS_SGI_MSK
)
1071 r
->flags
|= IEEE80211_TX_RC_SHORT_GI
;
1072 r
->idx
= iwlagn_hwrate_to_mac80211_idx(rate_n_flags
, info
->band
);
1076 * iwlagn_rx_reply_compressed_ba - Handler for REPLY_COMPRESSED_BA
1078 * Handles block-acknowledge notification from device, which reports success
1079 * of frames sent via aggregation.
1081 void iwlagn_rx_reply_compressed_ba(struct iwl_priv
*priv
,
1082 struct iwl_rx_mem_buffer
*rxb
)
1084 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
1085 struct iwl_compressed_ba_resp
*ba_resp
= &pkt
->u
.compressed_ba
;
1086 struct iwl_tx_queue
*txq
= NULL
;
1087 struct iwl_ht_agg
*agg
;
1091 unsigned long flags
;
1093 /* "flow" corresponds to Tx queue */
1094 u16 scd_flow
= le16_to_cpu(ba_resp
->scd_flow
);
1096 /* "ssn" is start of block-ack Tx window, corresponds to index
1097 * (in Tx queue's circular buffer) of first TFD/frame in window */
1098 u16 ba_resp_scd_ssn
= le16_to_cpu(ba_resp
->scd_ssn
);
1100 if (scd_flow
>= priv
->hw_params
.max_txq_num
) {
1102 "BUG_ON scd_flow is bigger than number of queues\n");
1106 txq
= &priv
->txq
[scd_flow
];
1107 sta_id
= ba_resp
->sta_id
;
1109 agg
= &priv
->stations
[sta_id
].tid
[tid
].agg
;
1110 if (unlikely(agg
->txq_id
!= scd_flow
)) {
1112 * FIXME: this is a uCode bug which need to be addressed,
1113 * log the information and return for now!
1114 * since it is possible happen very often and in order
1115 * not to fill the syslog, don't enable the logging by default
1117 IWL_DEBUG_TX_REPLY(priv
,
1118 "BA scd_flow %d does not match txq_id %d\n",
1119 scd_flow
, agg
->txq_id
);
1123 /* Find index just before block-ack window */
1124 index
= iwl_queue_dec_wrap(ba_resp_scd_ssn
& 0xff, txq
->q
.n_bd
);
1126 spin_lock_irqsave(&priv
->sta_lock
, flags
);
1128 IWL_DEBUG_TX_REPLY(priv
, "REPLY_COMPRESSED_BA [%d] Received from %pM, "
1131 (u8
*) &ba_resp
->sta_addr_lo32
,
1133 IWL_DEBUG_TX_REPLY(priv
, "TID = %d, SeqCtl = %d, bitmap = 0x%llx, scd_flow = "
1134 "%d, scd_ssn = %d\n",
1137 (unsigned long long)le64_to_cpu(ba_resp
->bitmap
),
1140 IWL_DEBUG_TX_REPLY(priv
, "DAT start_idx = %d, bitmap = 0x%llx\n",
1142 (unsigned long long)agg
->bitmap
);
1144 /* Update driver's record of ACK vs. not for each frame in window */
1145 iwlagn_tx_status_reply_compressed_ba(priv
, agg
, ba_resp
);
1147 /* Release all TFDs before the SSN, i.e. all TFDs in front of
1148 * block-ack window (we assume that they've been successfully
1149 * transmitted ... if not, it's too late anyway). */
1150 if (txq
->q
.read_ptr
!= (ba_resp_scd_ssn
& 0xff)) {
1151 /* calculate mac80211 ampdu sw queue to wake */
1152 int freed
= iwlagn_tx_queue_reclaim(priv
, scd_flow
, index
);
1153 iwl_free_tfds_in_queue(priv
, sta_id
, tid
, freed
);
1155 if ((iwl_queue_space(&txq
->q
) > txq
->q
.low_mark
) &&
1156 priv
->mac80211_registered
&&
1157 (agg
->state
!= IWL_EMPTYING_HW_QUEUE_DELBA
))
1158 iwl_wake_queue(priv
, txq
);
1160 iwlagn_txq_check_empty(priv
, sta_id
, tid
, scd_flow
);
1163 spin_unlock_irqrestore(&priv
->sta_lock
, flags
);
1166 #ifdef CONFIG_IWLWIFI_DEBUG
1167 const char *iwl_get_tx_fail_reason(u32 status
)
1169 #define TX_STATUS_FAIL(x) case TX_STATUS_FAIL_ ## x: return #x
1170 #define TX_STATUS_POSTPONE(x) case TX_STATUS_POSTPONE_ ## x: return #x
1172 switch (status
& TX_STATUS_MSK
) {
1173 case TX_STATUS_SUCCESS
:
1175 TX_STATUS_POSTPONE(DELAY
);
1176 TX_STATUS_POSTPONE(FEW_BYTES
);
1177 TX_STATUS_POSTPONE(BT_PRIO
);
1178 TX_STATUS_POSTPONE(QUIET_PERIOD
);
1179 TX_STATUS_POSTPONE(CALC_TTAK
);
1180 TX_STATUS_FAIL(INTERNAL_CROSSED_RETRY
);
1181 TX_STATUS_FAIL(SHORT_LIMIT
);
1182 TX_STATUS_FAIL(LONG_LIMIT
);
1183 TX_STATUS_FAIL(FIFO_UNDERRUN
);
1184 TX_STATUS_FAIL(DRAIN_FLOW
);
1185 TX_STATUS_FAIL(RFKILL_FLUSH
);
1186 TX_STATUS_FAIL(LIFE_EXPIRE
);
1187 TX_STATUS_FAIL(DEST_PS
);
1188 TX_STATUS_FAIL(HOST_ABORTED
);
1189 TX_STATUS_FAIL(BT_RETRY
);
1190 TX_STATUS_FAIL(STA_INVALID
);
1191 TX_STATUS_FAIL(FRAG_DROPPED
);
1192 TX_STATUS_FAIL(TID_DISABLE
);
1193 TX_STATUS_FAIL(FIFO_FLUSHED
);
1194 TX_STATUS_FAIL(INSUFFICIENT_CF_POLL
);
1195 TX_STATUS_FAIL(PASSIVE_NO_RX
);
1196 TX_STATUS_FAIL(NO_BEACON_ON_RADAR
);
1201 #undef TX_STATUS_FAIL
1202 #undef TX_STATUS_POSTPONE
1204 #endif /* CONFIG_IWLWIFI_DEBUG */