1 /******************************************************************************
5 * Copyright(c) 2008 - 2012 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>
34 #include <linux/ieee80211.h>
39 #include "iwl-agn-hw.h"
41 #include "iwl-trans.h"
43 static void iwlagn_tx_cmd_protection(struct iwl_priv
*priv
,
44 struct ieee80211_tx_info
*info
,
45 __le16 fc
, __le32
*tx_flags
)
47 if (info
->control
.rates
[0].flags
& IEEE80211_TX_RC_USE_RTS_CTS
||
48 info
->control
.rates
[0].flags
& IEEE80211_TX_RC_USE_CTS_PROTECT
||
49 info
->flags
& IEEE80211_TX_CTL_AMPDU
)
50 *tx_flags
|= TX_CMD_FLG_PROT_REQUIRE_MSK
;
54 * handle build REPLY_TX command notification.
56 static void iwlagn_tx_cmd_build_basic(struct iwl_priv
*priv
,
58 struct iwl_tx_cmd
*tx_cmd
,
59 struct ieee80211_tx_info
*info
,
60 struct ieee80211_hdr
*hdr
, u8 sta_id
)
62 __le16 fc
= hdr
->frame_control
;
63 __le32 tx_flags
= tx_cmd
->tx_flags
;
65 tx_cmd
->stop_time
.life_time
= TX_CMD_LIFE_TIME_INFINITE
;
67 if (!(info
->flags
& IEEE80211_TX_CTL_NO_ACK
))
68 tx_flags
|= TX_CMD_FLG_ACK_MSK
;
70 tx_flags
&= ~TX_CMD_FLG_ACK_MSK
;
72 if (ieee80211_is_probe_resp(fc
))
73 tx_flags
|= TX_CMD_FLG_TSF_MSK
;
74 else if (ieee80211_is_back_req(fc
))
75 tx_flags
|= TX_CMD_FLG_ACK_MSK
| TX_CMD_FLG_IMM_BA_RSP_MASK
;
76 else if (info
->band
== IEEE80211_BAND_2GHZ
&&
77 cfg(priv
)->bt_params
&&
78 cfg(priv
)->bt_params
->advanced_bt_coexist
&&
79 (ieee80211_is_auth(fc
) || ieee80211_is_assoc_req(fc
) ||
80 ieee80211_is_reassoc_req(fc
) ||
81 skb
->protocol
== cpu_to_be16(ETH_P_PAE
)))
82 tx_flags
|= TX_CMD_FLG_IGNORE_BT
;
85 tx_cmd
->sta_id
= sta_id
;
86 if (ieee80211_has_morefrags(fc
))
87 tx_flags
|= TX_CMD_FLG_MORE_FRAG_MSK
;
89 if (ieee80211_is_data_qos(fc
)) {
90 u8
*qc
= ieee80211_get_qos_ctl(hdr
);
91 tx_cmd
->tid_tspec
= qc
[0] & 0xf;
92 tx_flags
&= ~TX_CMD_FLG_SEQ_CTL_MSK
;
94 if (info
->flags
& IEEE80211_TX_CTL_ASSIGN_SEQ
)
95 tx_flags
|= TX_CMD_FLG_SEQ_CTL_MSK
;
97 tx_flags
&= ~TX_CMD_FLG_SEQ_CTL_MSK
;
100 iwlagn_tx_cmd_protection(priv
, info
, fc
, &tx_flags
);
102 tx_flags
&= ~(TX_CMD_FLG_ANT_SEL_MSK
);
103 if (ieee80211_is_mgmt(fc
)) {
104 if (ieee80211_is_assoc_req(fc
) || ieee80211_is_reassoc_req(fc
))
105 tx_cmd
->timeout
.pm_frame_timeout
= cpu_to_le16(3);
107 tx_cmd
->timeout
.pm_frame_timeout
= cpu_to_le16(2);
109 tx_cmd
->timeout
.pm_frame_timeout
= 0;
112 tx_cmd
->driver_txop
= 0;
113 tx_cmd
->tx_flags
= tx_flags
;
114 tx_cmd
->next_frame_len
= 0;
117 static void iwlagn_tx_cmd_build_rate(struct iwl_priv
*priv
,
118 struct iwl_tx_cmd
*tx_cmd
,
119 struct ieee80211_tx_info
*info
,
128 if (priv
->shrd
->wowlan
) {
129 rts_retry_limit
= IWLAGN_LOW_RETRY_LIMIT
;
130 data_retry_limit
= IWLAGN_LOW_RETRY_LIMIT
;
132 /* Set retry limit on RTS packets */
133 rts_retry_limit
= IWLAGN_RTS_DFAULT_RETRY_LIMIT
;
135 /* Set retry limit on DATA packets and Probe Responses*/
136 if (ieee80211_is_probe_resp(fc
)) {
137 data_retry_limit
= IWLAGN_MGMT_DFAULT_RETRY_LIMIT
;
139 min(data_retry_limit
, rts_retry_limit
);
140 } else if (ieee80211_is_back_req(fc
))
141 data_retry_limit
= IWLAGN_BAR_DFAULT_RETRY_LIMIT
;
143 data_retry_limit
= IWLAGN_DEFAULT_TX_RETRY
;
146 tx_cmd
->data_retry_limit
= data_retry_limit
;
147 tx_cmd
->rts_retry_limit
= rts_retry_limit
;
149 /* DATA packets will use the uCode station table for rate/antenna
151 if (ieee80211_is_data(fc
)) {
152 tx_cmd
->initial_rate_index
= 0;
153 tx_cmd
->tx_flags
|= TX_CMD_FLG_STA_RATE_MSK
;
154 #ifdef CONFIG_IWLWIFI_DEVICE_TESTMODE
155 if (priv
->tm_fixed_rate
) {
157 * rate overwrite by testmode
158 * we not only send lq command to change rate
159 * we also re-enforce per data pkt base.
161 tx_cmd
->tx_flags
&= ~TX_CMD_FLG_STA_RATE_MSK
;
162 memcpy(&tx_cmd
->rate_n_flags
, &priv
->tm_fixed_rate
,
163 sizeof(tx_cmd
->rate_n_flags
));
167 } else if (ieee80211_is_back_req(fc
))
168 tx_cmd
->tx_flags
|= TX_CMD_FLG_STA_RATE_MSK
;
171 * If the current TX rate stored in mac80211 has the MCS bit set, it's
172 * not really a TX rate. Thus, we use the lowest supported rate for
173 * this band. Also use the lowest supported rate if the stored rate
176 rate_idx
= info
->control
.rates
[0].idx
;
177 if (info
->control
.rates
[0].flags
& IEEE80211_TX_RC_MCS
||
178 (rate_idx
< 0) || (rate_idx
> IWL_RATE_COUNT_LEGACY
))
179 rate_idx
= rate_lowest_index(&priv
->bands
[info
->band
],
181 /* For 5 GHZ band, remap mac80211 rate indices into driver indices */
182 if (info
->band
== IEEE80211_BAND_5GHZ
)
183 rate_idx
+= IWL_FIRST_OFDM_RATE
;
184 /* Get PLCP rate for tx_cmd->rate_n_flags */
185 rate_plcp
= iwl_rates
[rate_idx
].plcp
;
186 /* Zero out flags for this packet */
189 /* Set CCK flag as needed */
190 if ((rate_idx
>= IWL_FIRST_CCK_RATE
) && (rate_idx
<= IWL_LAST_CCK_RATE
))
191 rate_flags
|= RATE_MCS_CCK_MSK
;
193 /* Set up antennas */
194 if (cfg(priv
)->bt_params
&&
195 cfg(priv
)->bt_params
->advanced_bt_coexist
&&
196 priv
->bt_full_concurrent
) {
197 /* operated as 1x1 in full concurrency mode */
198 priv
->mgmt_tx_ant
= iwl_toggle_tx_ant(priv
, priv
->mgmt_tx_ant
,
199 first_antenna(hw_params(priv
).valid_tx_ant
));
201 priv
->mgmt_tx_ant
= iwl_toggle_tx_ant(priv
, priv
->mgmt_tx_ant
,
202 hw_params(priv
).valid_tx_ant
);
203 rate_flags
|= iwl_ant_idx_to_flags(priv
->mgmt_tx_ant
);
205 /* Set the rate in the TX cmd */
206 tx_cmd
->rate_n_flags
= iwl_hw_set_rate_n_flags(rate_plcp
, rate_flags
);
209 static void iwlagn_tx_cmd_build_hwcrypto(struct iwl_priv
*priv
,
210 struct ieee80211_tx_info
*info
,
211 struct iwl_tx_cmd
*tx_cmd
,
212 struct sk_buff
*skb_frag
,
215 struct ieee80211_key_conf
*keyconf
= info
->control
.hw_key
;
217 switch (keyconf
->cipher
) {
218 case WLAN_CIPHER_SUITE_CCMP
:
219 tx_cmd
->sec_ctl
= TX_CMD_SEC_CCM
;
220 memcpy(tx_cmd
->key
, keyconf
->key
, keyconf
->keylen
);
221 if (info
->flags
& IEEE80211_TX_CTL_AMPDU
)
222 tx_cmd
->tx_flags
|= TX_CMD_FLG_AGG_CCMP_MSK
;
223 IWL_DEBUG_TX(priv
, "tx_cmd with AES hwcrypto\n");
226 case WLAN_CIPHER_SUITE_TKIP
:
227 tx_cmd
->sec_ctl
= TX_CMD_SEC_TKIP
;
228 ieee80211_get_tkip_p2k(keyconf
, skb_frag
, tx_cmd
->key
);
229 IWL_DEBUG_TX(priv
, "tx_cmd with tkip hwcrypto\n");
232 case WLAN_CIPHER_SUITE_WEP104
:
233 tx_cmd
->sec_ctl
|= TX_CMD_SEC_KEY128
;
235 case WLAN_CIPHER_SUITE_WEP40
:
236 tx_cmd
->sec_ctl
|= (TX_CMD_SEC_WEP
|
237 (keyconf
->keyidx
& TX_CMD_SEC_MSK
) << TX_CMD_SEC_SHIFT
);
239 memcpy(&tx_cmd
->key
[3], keyconf
->key
, keyconf
->keylen
);
241 IWL_DEBUG_TX(priv
, "Configuring packet for WEP encryption "
242 "with key %d\n", keyconf
->keyidx
);
246 IWL_ERR(priv
, "Unknown encode cipher %x\n", keyconf
->cipher
);
252 * start REPLY_TX command process
254 int iwlagn_tx_skb(struct iwl_priv
*priv
, struct sk_buff
*skb
)
256 struct ieee80211_hdr
*hdr
= (struct ieee80211_hdr
*)skb
->data
;
257 struct ieee80211_tx_info
*info
= IEEE80211_SKB_CB(skb
);
258 struct iwl_station_priv
*sta_priv
= NULL
;
259 struct iwl_rxon_context
*ctx
= &priv
->contexts
[IWL_RXON_CTX_BSS
];
260 struct iwl_device_cmd
*dev_cmd
= NULL
;
261 struct iwl_tx_cmd
*tx_cmd
;
265 u16 len
, seq_number
= 0;
266 u8 sta_id
, tid
= IWL_MAX_TID_COUNT
;
270 if (info
->control
.vif
)
271 ctx
= iwl_rxon_ctx_from_vif(info
->control
.vif
);
273 spin_lock_irqsave(&priv
->shrd
->lock
, flags
);
274 if (iwl_is_rfkill(priv
->shrd
)) {
275 IWL_DEBUG_DROP(priv
, "Dropping - RF KILL\n");
276 goto drop_unlock_priv
;
279 fc
= hdr
->frame_control
;
281 #ifdef CONFIG_IWLWIFI_DEBUG
282 if (ieee80211_is_auth(fc
))
283 IWL_DEBUG_TX(priv
, "Sending AUTH frame\n");
284 else if (ieee80211_is_assoc_req(fc
))
285 IWL_DEBUG_TX(priv
, "Sending ASSOC frame\n");
286 else if (ieee80211_is_reassoc_req(fc
))
287 IWL_DEBUG_TX(priv
, "Sending REASSOC frame\n");
290 if (unlikely(ieee80211_is_probe_resp(fc
))) {
291 struct iwl_wipan_noa_data
*noa_data
=
292 rcu_dereference(priv
->noa_data
);
295 pskb_expand_head(skb
, 0, noa_data
->length
,
297 memcpy(skb_put(skb
, noa_data
->length
),
298 noa_data
->data
, noa_data
->length
);
299 hdr
= (struct ieee80211_hdr
*)skb
->data
;
303 hdr_len
= ieee80211_hdrlen(fc
);
305 /* For management frames use broadcast id to do not break aggregation */
306 if (!ieee80211_is_data(fc
))
307 sta_id
= ctx
->bcast_sta_id
;
309 /* Find index into station table for destination station */
310 sta_id
= iwl_sta_id_or_broadcast(priv
, ctx
, info
->control
.sta
);
311 if (sta_id
== IWL_INVALID_STATION
) {
312 IWL_DEBUG_DROP(priv
, "Dropping - INVALID STATION: %pM\n",
314 goto drop_unlock_priv
;
318 IWL_DEBUG_TX(priv
, "station Id %d\n", sta_id
);
320 if (info
->control
.sta
)
321 sta_priv
= (void *)info
->control
.sta
->drv_priv
;
323 if (sta_priv
&& sta_priv
->asleep
&&
324 (info
->flags
& IEEE80211_TX_CTL_POLL_RESPONSE
)) {
326 * This sends an asynchronous command to the device,
327 * but we can rely on it being processed before the
328 * next frame is processed -- and the next frame to
329 * this station is the one that will consume this
331 * For now set the counter to just 1 since we do not
334 iwl_sta_modify_sleep_tx_count(priv
, sta_id
, 1);
337 if (info
->flags
& IEEE80211_TX_CTL_AMPDU
)
340 /* irqs already disabled/saved above when locking priv->shrd->lock */
341 spin_lock(&priv
->shrd
->sta_lock
);
343 dev_cmd
= kmem_cache_alloc(priv
->tx_cmd_pool
, GFP_ATOMIC
);
345 if (unlikely(!dev_cmd
))
346 goto drop_unlock_sta
;
348 memset(dev_cmd
, 0, sizeof(*dev_cmd
));
349 tx_cmd
= (struct iwl_tx_cmd
*) dev_cmd
->payload
;
351 /* Total # bytes to be transmitted */
353 tx_cmd
->len
= cpu_to_le16(len
);
355 if (info
->control
.hw_key
)
356 iwlagn_tx_cmd_build_hwcrypto(priv
, info
, tx_cmd
, skb
, sta_id
);
358 /* TODO need this for burst mode later on */
359 iwlagn_tx_cmd_build_basic(priv
, skb
, tx_cmd
, info
, hdr
, sta_id
);
360 iwl_dbg_log_tx_data_frame(priv
, len
, hdr
);
362 iwlagn_tx_cmd_build_rate(priv
, tx_cmd
, info
, fc
);
364 iwl_update_stats(priv
, true, fc
, len
);
366 memset(&info
->status
, 0, sizeof(info
->status
));
368 info
->driver_data
[0] = ctx
;
369 info
->driver_data
[1] = dev_cmd
;
371 if (ieee80211_is_data_qos(fc
) && !ieee80211_is_qos_nullfunc(fc
)) {
373 struct iwl_tid_data
*tid_data
;
374 qc
= ieee80211_get_qos_ctl(hdr
);
375 tid
= qc
[0] & IEEE80211_QOS_CTL_TID_MASK
;
376 if (WARN_ON_ONCE(tid
>= IWL_MAX_TID_COUNT
))
377 goto drop_unlock_sta
;
378 tid_data
= &priv
->tid_data
[sta_id
][tid
];
380 /* aggregation is on for this <sta,tid> */
381 if (info
->flags
& IEEE80211_TX_CTL_AMPDU
&&
382 tid_data
->agg
.state
!= IWL_AGG_ON
) {
383 IWL_ERR(priv
, "TX_CTL_AMPDU while not in AGG:"
384 " Tx flags = 0x%08x, agg.state = %d",
385 info
->flags
, tid_data
->agg
.state
);
386 IWL_ERR(priv
, "sta_id = %d, tid = %d seq_num = %d",
387 sta_id
, tid
, SEQ_TO_SN(tid_data
->seq_number
));
388 goto drop_unlock_sta
;
391 /* We can receive packets from the stack in IWL_AGG_{ON,OFF}
392 * only. Check this here.
394 if (WARN_ONCE(tid_data
->agg
.state
!= IWL_AGG_ON
&&
395 tid_data
->agg
.state
!= IWL_AGG_OFF
,
396 "Tx while agg.state = %d", tid_data
->agg
.state
))
397 goto drop_unlock_sta
;
399 seq_number
= tid_data
->seq_number
;
400 seq_number
&= IEEE80211_SCTL_SEQ
;
401 hdr
->seq_ctrl
&= cpu_to_le16(IEEE80211_SCTL_FRAG
);
402 hdr
->seq_ctrl
|= cpu_to_le16(seq_number
);
406 /* Copy MAC header from skb into command buffer */
407 memcpy(tx_cmd
->hdr
, hdr
, hdr_len
);
409 if (iwl_trans_tx(trans(priv
), skb
, dev_cmd
, ctx
->ctxid
, sta_id
, tid
))
410 goto drop_unlock_sta
;
412 if (ieee80211_is_data_qos(fc
) && !ieee80211_is_qos_nullfunc(fc
) &&
413 !ieee80211_has_morefrags(fc
))
414 priv
->tid_data
[sta_id
][tid
].seq_number
= seq_number
;
416 spin_unlock(&priv
->shrd
->sta_lock
);
417 spin_unlock_irqrestore(&priv
->shrd
->lock
, flags
);
420 * Avoid atomic ops if it isn't an associated client.
421 * Also, if this is a packet for aggregation, don't
422 * increase the counter because the ucode will stop
423 * aggregation queues when their respective station
426 if (sta_priv
&& sta_priv
->client
&& !is_agg
)
427 atomic_inc(&sta_priv
->pending_frames
);
433 kmem_cache_free(priv
->tx_cmd_pool
, dev_cmd
);
434 spin_unlock(&priv
->shrd
->sta_lock
);
436 spin_unlock_irqrestore(&priv
->shrd
->lock
, flags
);
440 int iwlagn_tx_agg_stop(struct iwl_priv
*priv
, struct ieee80211_vif
*vif
,
441 struct ieee80211_sta
*sta
, u16 tid
)
443 struct iwl_tid_data
*tid_data
;
447 sta_id
= iwl_sta_id(sta
);
449 if (sta_id
== IWL_INVALID_STATION
) {
450 IWL_ERR(priv
, "Invalid station for AGG tid %d\n", tid
);
454 spin_lock_irqsave(&priv
->shrd
->sta_lock
, flags
);
456 tid_data
= &priv
->tid_data
[sta_id
][tid
];
458 switch (priv
->tid_data
[sta_id
][tid
].agg
.state
) {
459 case IWL_EMPTYING_HW_QUEUE_ADDBA
:
461 * This can happen if the peer stops aggregation
462 * again before we've had a chance to drain the
463 * queue we selected previously, i.e. before the
464 * session was really started completely.
466 IWL_DEBUG_HT(priv
, "AGG stop before setup done\n");
471 IWL_WARN(priv
, "Stopping AGG while state not ON "
472 "or starting for %d on %d (%d)\n", sta_id
, tid
,
473 priv
->tid_data
[sta_id
][tid
].agg
.state
);
474 spin_unlock_irqrestore(&priv
->shrd
->sta_lock
, flags
);
478 tid_data
->agg
.ssn
= SEQ_TO_SN(tid_data
->seq_number
);
480 /* There are still packets for this RA / TID in the HW */
481 if (tid_data
->agg
.ssn
!= tid_data
->next_reclaimed
) {
482 IWL_DEBUG_TX_QUEUES(priv
, "Can't proceed: ssn %d, "
485 tid_data
->next_reclaimed
);
486 priv
->tid_data
[sta_id
][tid
].agg
.state
=
487 IWL_EMPTYING_HW_QUEUE_DELBA
;
488 spin_unlock_irqrestore(&priv
->shrd
->sta_lock
, flags
);
492 IWL_DEBUG_TX_QUEUES(priv
, "Can proceed: ssn = next_recl = %d",
495 priv
->tid_data
[sta_id
][tid
].agg
.state
= IWL_AGG_OFF
;
497 /* do not restore/save irqs */
498 spin_unlock(&priv
->shrd
->sta_lock
);
499 spin_lock(&priv
->shrd
->lock
);
501 iwl_trans_tx_agg_disable(trans(priv
), sta_id
, tid
);
503 spin_unlock_irqrestore(&priv
->shrd
->lock
, flags
);
505 ieee80211_stop_tx_ba_cb_irqsafe(vif
, sta
->addr
, tid
);
510 int iwlagn_tx_agg_start(struct iwl_priv
*priv
, struct ieee80211_vif
*vif
,
511 struct ieee80211_sta
*sta
, u16 tid
, u16
*ssn
)
513 struct iwl_tid_data
*tid_data
;
518 IWL_DEBUG_HT(priv
, "TX AGG request on ra = %pM tid = %d\n",
521 sta_id
= iwl_sta_id(sta
);
522 if (sta_id
== IWL_INVALID_STATION
) {
523 IWL_ERR(priv
, "Start AGG on invalid station\n");
526 if (unlikely(tid
>= IWL_MAX_TID_COUNT
))
529 if (priv
->tid_data
[sta_id
][tid
].agg
.state
!= IWL_AGG_OFF
) {
530 IWL_ERR(priv
, "Start AGG when state is not IWL_AGG_OFF !\n");
534 ret
= iwl_sta_tx_modify_enable_tid(priv
, sta_id
, tid
);
538 spin_lock_irqsave(&priv
->shrd
->sta_lock
, flags
);
540 tid_data
= &priv
->tid_data
[sta_id
][tid
];
541 tid_data
->agg
.ssn
= SEQ_TO_SN(tid_data
->seq_number
);
543 *ssn
= tid_data
->agg
.ssn
;
545 ret
= iwl_trans_tx_agg_alloc(trans(priv
), sta_id
, tid
);
547 spin_unlock_irqrestore(&priv
->shrd
->sta_lock
, flags
);
551 if (*ssn
== tid_data
->next_reclaimed
) {
552 IWL_DEBUG_TX_QUEUES(priv
, "Can proceed: ssn = next_recl = %d",
554 tid_data
->agg
.state
= IWL_AGG_ON
;
555 ieee80211_start_tx_ba_cb_irqsafe(vif
, sta
->addr
, tid
);
557 IWL_DEBUG_TX_QUEUES(priv
, "Can't proceed: ssn %d, "
558 "next_reclaimed = %d",
560 tid_data
->next_reclaimed
);
561 tid_data
->agg
.state
= IWL_EMPTYING_HW_QUEUE_ADDBA
;
564 spin_unlock_irqrestore(&priv
->shrd
->sta_lock
, flags
);
569 int iwlagn_tx_agg_oper(struct iwl_priv
*priv
, struct ieee80211_vif
*vif
,
570 struct ieee80211_sta
*sta
, u16 tid
, u8 buf_size
)
572 struct iwl_station_priv
*sta_priv
= (void *) sta
->drv_priv
;
573 struct iwl_rxon_context
*ctx
= iwl_rxon_ctx_from_vif(vif
);
577 buf_size
= min_t(int, buf_size
, LINK_QUAL_AGG_FRAME_LIMIT_DEF
);
579 spin_lock_irqsave(&priv
->shrd
->sta_lock
, flags
);
580 ssn
= priv
->tid_data
[sta_priv
->sta_id
][tid
].agg
.ssn
;
581 spin_unlock_irqrestore(&priv
->shrd
->sta_lock
, flags
);
583 iwl_trans_tx_agg_setup(trans(priv
), ctx
->ctxid
, sta_priv
->sta_id
, tid
,
587 * If the limit is 0, then it wasn't initialised yet,
588 * use the default. We can do that since we take the
589 * minimum below, and we don't want to go above our
590 * default due to hardware restrictions.
592 if (sta_priv
->max_agg_bufsize
== 0)
593 sta_priv
->max_agg_bufsize
=
594 LINK_QUAL_AGG_FRAME_LIMIT_DEF
;
597 * Even though in theory the peer could have different
598 * aggregation reorder buffer sizes for different sessions,
599 * our ucode doesn't allow for that and has a global limit
600 * for each station. Therefore, use the minimum of all the
601 * aggregation sessions and our default value.
603 sta_priv
->max_agg_bufsize
=
604 min(sta_priv
->max_agg_bufsize
, buf_size
);
606 if (cfg(priv
)->ht_params
&&
607 cfg(priv
)->ht_params
->use_rts_for_aggregation
) {
609 * switch to RTS/CTS if it is the prefer protection
610 * method for HT traffic
613 sta_priv
->lq_sta
.lq
.general_params
.flags
|=
614 LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK
;
616 priv
->agg_tids_count
++;
617 IWL_DEBUG_HT(priv
, "priv->agg_tids_count = %u\n",
618 priv
->agg_tids_count
);
620 sta_priv
->lq_sta
.lq
.agg_params
.agg_frame_cnt_limit
=
621 sta_priv
->max_agg_bufsize
;
623 IWL_INFO(priv
, "Tx aggregation enabled on ra = %pM tid = %d\n",
626 return iwl_send_lq_cmd(priv
, ctx
,
627 &sta_priv
->lq_sta
.lq
, CMD_ASYNC
, false);
630 static void iwlagn_check_ratid_empty(struct iwl_priv
*priv
, int sta_id
, u8 tid
)
632 struct iwl_tid_data
*tid_data
= &priv
->tid_data
[sta_id
][tid
];
633 enum iwl_rxon_context_id ctx
;
634 struct ieee80211_vif
*vif
;
637 lockdep_assert_held(&priv
->shrd
->sta_lock
);
639 addr
= priv
->stations
[sta_id
].sta
.sta
.addr
;
640 ctx
= priv
->stations
[sta_id
].ctxid
;
641 vif
= priv
->contexts
[ctx
].vif
;
643 switch (priv
->tid_data
[sta_id
][tid
].agg
.state
) {
644 case IWL_EMPTYING_HW_QUEUE_DELBA
:
645 /* There are no packets for this RA / TID in the HW any more */
646 if (tid_data
->agg
.ssn
== tid_data
->next_reclaimed
) {
647 IWL_DEBUG_TX_QUEUES(priv
,
648 "Can continue DELBA flow ssn = next_recl ="
649 " %d", tid_data
->next_reclaimed
);
650 iwl_trans_tx_agg_disable(trans(priv
), sta_id
, tid
);
651 tid_data
->agg
.state
= IWL_AGG_OFF
;
652 ieee80211_stop_tx_ba_cb_irqsafe(vif
, addr
, tid
);
655 case IWL_EMPTYING_HW_QUEUE_ADDBA
:
656 /* There are no packets for this RA / TID in the HW any more */
657 if (tid_data
->agg
.ssn
== tid_data
->next_reclaimed
) {
658 IWL_DEBUG_TX_QUEUES(priv
,
659 "Can continue ADDBA flow ssn = next_recl ="
660 " %d", tid_data
->next_reclaimed
);
661 tid_data
->agg
.state
= IWL_AGG_ON
;
662 ieee80211_start_tx_ba_cb_irqsafe(vif
, addr
, tid
);
670 static void iwlagn_non_agg_tx_status(struct iwl_priv
*priv
,
671 struct iwl_rxon_context
*ctx
,
674 struct ieee80211_sta
*sta
;
675 struct iwl_station_priv
*sta_priv
;
678 sta
= ieee80211_find_sta(ctx
->vif
, addr1
);
680 sta_priv
= (void *)sta
->drv_priv
;
681 /* avoid atomic ops if this isn't a client */
682 if (sta_priv
->client
&&
683 atomic_dec_return(&sta_priv
->pending_frames
) == 0)
684 ieee80211_sta_block_awake(priv
->hw
, sta
, false);
690 * translate ucode response to mac80211 tx status control values
692 static void iwlagn_hwrate_to_tx_control(struct iwl_priv
*priv
, u32 rate_n_flags
,
693 struct ieee80211_tx_info
*info
)
695 struct ieee80211_tx_rate
*r
= &info
->control
.rates
[0];
697 info
->antenna_sel_tx
=
698 ((rate_n_flags
& RATE_MCS_ANT_ABC_MSK
) >> RATE_MCS_ANT_POS
);
699 if (rate_n_flags
& RATE_MCS_HT_MSK
)
700 r
->flags
|= IEEE80211_TX_RC_MCS
;
701 if (rate_n_flags
& RATE_MCS_GF_MSK
)
702 r
->flags
|= IEEE80211_TX_RC_GREEN_FIELD
;
703 if (rate_n_flags
& RATE_MCS_HT40_MSK
)
704 r
->flags
|= IEEE80211_TX_RC_40_MHZ_WIDTH
;
705 if (rate_n_flags
& RATE_MCS_DUP_MSK
)
706 r
->flags
|= IEEE80211_TX_RC_DUP_DATA
;
707 if (rate_n_flags
& RATE_MCS_SGI_MSK
)
708 r
->flags
|= IEEE80211_TX_RC_SHORT_GI
;
709 r
->idx
= iwlagn_hwrate_to_mac80211_idx(rate_n_flags
, info
->band
);
712 #ifdef CONFIG_IWLWIFI_DEBUG
713 const char *iwl_get_tx_fail_reason(u32 status
)
715 #define TX_STATUS_FAIL(x) case TX_STATUS_FAIL_ ## x: return #x
716 #define TX_STATUS_POSTPONE(x) case TX_STATUS_POSTPONE_ ## x: return #x
718 switch (status
& TX_STATUS_MSK
) {
719 case TX_STATUS_SUCCESS
:
721 TX_STATUS_POSTPONE(DELAY
);
722 TX_STATUS_POSTPONE(FEW_BYTES
);
723 TX_STATUS_POSTPONE(BT_PRIO
);
724 TX_STATUS_POSTPONE(QUIET_PERIOD
);
725 TX_STATUS_POSTPONE(CALC_TTAK
);
726 TX_STATUS_FAIL(INTERNAL_CROSSED_RETRY
);
727 TX_STATUS_FAIL(SHORT_LIMIT
);
728 TX_STATUS_FAIL(LONG_LIMIT
);
729 TX_STATUS_FAIL(FIFO_UNDERRUN
);
730 TX_STATUS_FAIL(DRAIN_FLOW
);
731 TX_STATUS_FAIL(RFKILL_FLUSH
);
732 TX_STATUS_FAIL(LIFE_EXPIRE
);
733 TX_STATUS_FAIL(DEST_PS
);
734 TX_STATUS_FAIL(HOST_ABORTED
);
735 TX_STATUS_FAIL(BT_RETRY
);
736 TX_STATUS_FAIL(STA_INVALID
);
737 TX_STATUS_FAIL(FRAG_DROPPED
);
738 TX_STATUS_FAIL(TID_DISABLE
);
739 TX_STATUS_FAIL(FIFO_FLUSHED
);
740 TX_STATUS_FAIL(INSUFFICIENT_CF_POLL
);
741 TX_STATUS_FAIL(PASSIVE_NO_RX
);
742 TX_STATUS_FAIL(NO_BEACON_ON_RADAR
);
747 #undef TX_STATUS_FAIL
748 #undef TX_STATUS_POSTPONE
750 #endif /* CONFIG_IWLWIFI_DEBUG */
752 static void iwlagn_count_agg_tx_err_status(struct iwl_priv
*priv
, u16 status
)
754 status
&= AGG_TX_STATUS_MSK
;
757 case AGG_TX_STATE_UNDERRUN_MSK
:
758 priv
->reply_agg_tx_stats
.underrun
++;
760 case AGG_TX_STATE_BT_PRIO_MSK
:
761 priv
->reply_agg_tx_stats
.bt_prio
++;
763 case AGG_TX_STATE_FEW_BYTES_MSK
:
764 priv
->reply_agg_tx_stats
.few_bytes
++;
766 case AGG_TX_STATE_ABORT_MSK
:
767 priv
->reply_agg_tx_stats
.abort
++;
769 case AGG_TX_STATE_LAST_SENT_TTL_MSK
:
770 priv
->reply_agg_tx_stats
.last_sent_ttl
++;
772 case AGG_TX_STATE_LAST_SENT_TRY_CNT_MSK
:
773 priv
->reply_agg_tx_stats
.last_sent_try
++;
775 case AGG_TX_STATE_LAST_SENT_BT_KILL_MSK
:
776 priv
->reply_agg_tx_stats
.last_sent_bt_kill
++;
778 case AGG_TX_STATE_SCD_QUERY_MSK
:
779 priv
->reply_agg_tx_stats
.scd_query
++;
781 case AGG_TX_STATE_TEST_BAD_CRC32_MSK
:
782 priv
->reply_agg_tx_stats
.bad_crc32
++;
784 case AGG_TX_STATE_RESPONSE_MSK
:
785 priv
->reply_agg_tx_stats
.response
++;
787 case AGG_TX_STATE_DUMP_TX_MSK
:
788 priv
->reply_agg_tx_stats
.dump_tx
++;
790 case AGG_TX_STATE_DELAY_TX_MSK
:
791 priv
->reply_agg_tx_stats
.delay_tx
++;
794 priv
->reply_agg_tx_stats
.unknown
++;
799 static void iwl_rx_reply_tx_agg(struct iwl_priv
*priv
,
800 struct iwlagn_tx_resp
*tx_resp
)
802 struct agg_tx_status
*frame_status
= &tx_resp
->status
;
803 int tid
= (tx_resp
->ra_tid
& IWLAGN_TX_RES_TID_MSK
) >>
804 IWLAGN_TX_RES_TID_POS
;
805 int sta_id
= (tx_resp
->ra_tid
& IWLAGN_TX_RES_RA_MSK
) >>
806 IWLAGN_TX_RES_RA_POS
;
807 struct iwl_ht_agg
*agg
= &priv
->tid_data
[sta_id
][tid
].agg
;
808 u32 status
= le16_to_cpu(tx_resp
->status
.status
);
811 if (agg
->wait_for_ba
)
812 IWL_DEBUG_TX_REPLY(priv
,
813 "got tx response w/o block-ack\n");
815 agg
->rate_n_flags
= le32_to_cpu(tx_resp
->rate_n_flags
);
816 agg
->wait_for_ba
= (tx_resp
->frame_count
> 1);
819 * If the BT kill count is non-zero, we'll get this
820 * notification again.
822 if (tx_resp
->bt_kill_count
&& tx_resp
->frame_count
== 1 &&
823 cfg(priv
)->bt_params
&&
824 cfg(priv
)->bt_params
->advanced_bt_coexist
) {
825 IWL_DEBUG_COEX(priv
, "receive reply tx w/ bt_kill\n");
828 if (tx_resp
->frame_count
== 1)
831 /* Construct bit-map of pending frames within Tx window */
832 for (i
= 0; i
< tx_resp
->frame_count
; i
++) {
833 u16 fstatus
= le16_to_cpu(frame_status
[i
].status
);
835 if (status
& AGG_TX_STATUS_MSK
)
836 iwlagn_count_agg_tx_err_status(priv
, fstatus
);
838 if (status
& (AGG_TX_STATE_FEW_BYTES_MSK
|
839 AGG_TX_STATE_ABORT_MSK
))
842 IWL_DEBUG_TX_REPLY(priv
, "status %s (0x%08x), "
843 "try-count (0x%08x)\n",
844 iwl_get_agg_tx_fail_reason(fstatus
),
845 fstatus
& AGG_TX_STATUS_MSK
,
846 fstatus
& AGG_TX_TRY_MSK
);
850 #ifdef CONFIG_IWLWIFI_DEBUG
851 #define AGG_TX_STATE_FAIL(x) case AGG_TX_STATE_ ## x: return #x
853 const char *iwl_get_agg_tx_fail_reason(u16 status
)
855 status
&= AGG_TX_STATUS_MSK
;
857 case AGG_TX_STATE_TRANSMITTED
:
859 AGG_TX_STATE_FAIL(UNDERRUN_MSK
);
860 AGG_TX_STATE_FAIL(BT_PRIO_MSK
);
861 AGG_TX_STATE_FAIL(FEW_BYTES_MSK
);
862 AGG_TX_STATE_FAIL(ABORT_MSK
);
863 AGG_TX_STATE_FAIL(LAST_SENT_TTL_MSK
);
864 AGG_TX_STATE_FAIL(LAST_SENT_TRY_CNT_MSK
);
865 AGG_TX_STATE_FAIL(LAST_SENT_BT_KILL_MSK
);
866 AGG_TX_STATE_FAIL(SCD_QUERY_MSK
);
867 AGG_TX_STATE_FAIL(TEST_BAD_CRC32_MSK
);
868 AGG_TX_STATE_FAIL(RESPONSE_MSK
);
869 AGG_TX_STATE_FAIL(DUMP_TX_MSK
);
870 AGG_TX_STATE_FAIL(DELAY_TX_MSK
);
875 #endif /* CONFIG_IWLWIFI_DEBUG */
877 static inline u32
iwlagn_get_scd_ssn(struct iwlagn_tx_resp
*tx_resp
)
879 return le32_to_cpup((__le32
*)&tx_resp
->status
+
880 tx_resp
->frame_count
) & MAX_SN
;
883 static void iwlagn_count_tx_err_status(struct iwl_priv
*priv
, u16 status
)
885 status
&= TX_STATUS_MSK
;
888 case TX_STATUS_POSTPONE_DELAY
:
889 priv
->reply_tx_stats
.pp_delay
++;
891 case TX_STATUS_POSTPONE_FEW_BYTES
:
892 priv
->reply_tx_stats
.pp_few_bytes
++;
894 case TX_STATUS_POSTPONE_BT_PRIO
:
895 priv
->reply_tx_stats
.pp_bt_prio
++;
897 case TX_STATUS_POSTPONE_QUIET_PERIOD
:
898 priv
->reply_tx_stats
.pp_quiet_period
++;
900 case TX_STATUS_POSTPONE_CALC_TTAK
:
901 priv
->reply_tx_stats
.pp_calc_ttak
++;
903 case TX_STATUS_FAIL_INTERNAL_CROSSED_RETRY
:
904 priv
->reply_tx_stats
.int_crossed_retry
++;
906 case TX_STATUS_FAIL_SHORT_LIMIT
:
907 priv
->reply_tx_stats
.short_limit
++;
909 case TX_STATUS_FAIL_LONG_LIMIT
:
910 priv
->reply_tx_stats
.long_limit
++;
912 case TX_STATUS_FAIL_FIFO_UNDERRUN
:
913 priv
->reply_tx_stats
.fifo_underrun
++;
915 case TX_STATUS_FAIL_DRAIN_FLOW
:
916 priv
->reply_tx_stats
.drain_flow
++;
918 case TX_STATUS_FAIL_RFKILL_FLUSH
:
919 priv
->reply_tx_stats
.rfkill_flush
++;
921 case TX_STATUS_FAIL_LIFE_EXPIRE
:
922 priv
->reply_tx_stats
.life_expire
++;
924 case TX_STATUS_FAIL_DEST_PS
:
925 priv
->reply_tx_stats
.dest_ps
++;
927 case TX_STATUS_FAIL_HOST_ABORTED
:
928 priv
->reply_tx_stats
.host_abort
++;
930 case TX_STATUS_FAIL_BT_RETRY
:
931 priv
->reply_tx_stats
.bt_retry
++;
933 case TX_STATUS_FAIL_STA_INVALID
:
934 priv
->reply_tx_stats
.sta_invalid
++;
936 case TX_STATUS_FAIL_FRAG_DROPPED
:
937 priv
->reply_tx_stats
.frag_drop
++;
939 case TX_STATUS_FAIL_TID_DISABLE
:
940 priv
->reply_tx_stats
.tid_disable
++;
942 case TX_STATUS_FAIL_FIFO_FLUSHED
:
943 priv
->reply_tx_stats
.fifo_flush
++;
945 case TX_STATUS_FAIL_INSUFFICIENT_CF_POLL
:
946 priv
->reply_tx_stats
.insuff_cf_poll
++;
948 case TX_STATUS_FAIL_PASSIVE_NO_RX
:
949 priv
->reply_tx_stats
.fail_hw_drop
++;
951 case TX_STATUS_FAIL_NO_BEACON_ON_RADAR
:
952 priv
->reply_tx_stats
.sta_color_mismatch
++;
955 priv
->reply_tx_stats
.unknown
++;
960 static void iwlagn_set_tx_status(struct iwl_priv
*priv
,
961 struct ieee80211_tx_info
*info
,
962 struct iwlagn_tx_resp
*tx_resp
,
965 u16 status
= le16_to_cpu(tx_resp
->status
.status
);
967 info
->status
.rates
[0].count
= tx_resp
->failure_frame
+ 1;
969 info
->flags
&= ~IEEE80211_TX_CTL_AMPDU
;
970 info
->flags
|= iwl_tx_status_to_mac80211(status
);
971 iwlagn_hwrate_to_tx_control(priv
, le32_to_cpu(tx_resp
->rate_n_flags
),
973 if (!iwl_is_tx_success(status
))
974 iwlagn_count_tx_err_status(priv
, status
);
977 static void iwl_check_abort_status(struct iwl_priv
*priv
,
978 u8 frame_count
, u32 status
)
980 if (frame_count
== 1 && status
== TX_STATUS_FAIL_RFKILL_FLUSH
) {
981 IWL_ERR(priv
, "Tx flush command to flush out all frames\n");
982 if (!test_bit(STATUS_EXIT_PENDING
, &priv
->shrd
->status
))
983 queue_work(priv
->shrd
->workqueue
, &priv
->tx_flush
);
987 int iwlagn_rx_reply_tx(struct iwl_priv
*priv
, struct iwl_rx_mem_buffer
*rxb
,
988 struct iwl_device_cmd
*cmd
)
990 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
991 u16 sequence
= le16_to_cpu(pkt
->hdr
.sequence
);
992 int txq_id
= SEQ_TO_QUEUE(sequence
);
993 int cmd_index __maybe_unused
= SEQ_TO_INDEX(sequence
);
994 struct iwlagn_tx_resp
*tx_resp
= (void *)&pkt
->u
.raw
[0];
995 struct ieee80211_hdr
*hdr
;
996 u32 status
= le16_to_cpu(tx_resp
->status
.status
);
997 u16 ssn
= iwlagn_get_scd_ssn(tx_resp
);
1001 struct ieee80211_tx_info
*info
;
1002 unsigned long flags
;
1003 struct sk_buff_head skbs
;
1004 struct sk_buff
*skb
;
1005 struct iwl_rxon_context
*ctx
;
1006 bool is_agg
= (txq_id
>= IWLAGN_FIRST_AMPDU_QUEUE
);
1008 tid
= (tx_resp
->ra_tid
& IWLAGN_TX_RES_TID_MSK
) >>
1009 IWLAGN_TX_RES_TID_POS
;
1010 sta_id
= (tx_resp
->ra_tid
& IWLAGN_TX_RES_RA_MSK
) >>
1011 IWLAGN_TX_RES_RA_POS
;
1013 spin_lock_irqsave(&priv
->shrd
->sta_lock
, flags
);
1016 iwl_rx_reply_tx_agg(priv
, tx_resp
);
1018 if (tx_resp
->frame_count
== 1) {
1019 u16 next_reclaimed
= le16_to_cpu(tx_resp
->seq_ctl
);
1020 next_reclaimed
= SEQ_TO_SN(next_reclaimed
+ 0x10);
1023 /* If this is an aggregation queue, we can rely on the
1024 * ssn since the wifi sequence number corresponds to
1025 * the index in the TFD ring (%256).
1026 * The seq_ctl is the sequence control of the packet
1027 * to which this Tx response relates. But if there is a
1028 * hole in the bitmap of the BA we received, this Tx
1029 * response may allow to reclaim the hole and all the
1030 * subsequent packets that were already acked.
1031 * In that case, seq_ctl != ssn, and the next packet
1032 * to be reclaimed will be ssn and not seq_ctl.
1034 next_reclaimed
= ssn
;
1037 __skb_queue_head_init(&skbs
);
1038 priv
->tid_data
[sta_id
][tid
].next_reclaimed
= next_reclaimed
;
1040 IWL_DEBUG_TX_REPLY(priv
, "Next reclaimed packet:%d",
1043 /*we can free until ssn % q.n_bd not inclusive */
1044 WARN_ON(iwl_trans_reclaim(trans(priv
), sta_id
, tid
, txq_id
,
1045 ssn
, status
, &skbs
));
1046 iwlagn_check_ratid_empty(priv
, sta_id
, tid
);
1048 while (!skb_queue_empty(&skbs
)) {
1049 skb
= __skb_dequeue(&skbs
);
1050 hdr
= (struct ieee80211_hdr
*)skb
->data
;
1052 if (!ieee80211_is_data_qos(hdr
->frame_control
))
1053 priv
->last_seq_ctl
= tx_resp
->seq_ctl
;
1055 info
= IEEE80211_SKB_CB(skb
);
1056 ctx
= info
->driver_data
[0];
1057 kmem_cache_free(priv
->tx_cmd_pool
,
1058 (info
->driver_data
[1]));
1060 memset(&info
->status
, 0, sizeof(info
->status
));
1062 if (status
== TX_STATUS_FAIL_PASSIVE_NO_RX
&&
1063 iwl_is_associated_ctx(ctx
) && ctx
->vif
&&
1064 ctx
->vif
->type
== NL80211_IFTYPE_STATION
) {
1065 ctx
->last_tx_rejected
= true;
1066 iwl_trans_stop_queue(trans(priv
), txq_id
,
1067 "Tx on passive channel");
1069 IWL_DEBUG_TX_REPLY(priv
,
1070 "TXQ %d status %s (0x%08x) "
1071 "rate_n_flags 0x%x retries %d\n",
1073 iwl_get_tx_fail_reason(status
),
1075 le32_to_cpu(tx_resp
->rate_n_flags
),
1076 tx_resp
->failure_frame
);
1078 IWL_DEBUG_TX_REPLY(priv
,
1079 "FrameCnt = %d, idx=%d\n",
1080 tx_resp
->frame_count
, cmd_index
);
1083 /* check if BAR is needed */
1084 if (is_agg
&& !iwl_is_tx_success(status
))
1085 info
->flags
|= IEEE80211_TX_STAT_AMPDU_NO_BACK
;
1086 iwlagn_set_tx_status(priv
, IEEE80211_SKB_CB(skb
),
1089 iwlagn_non_agg_tx_status(priv
, ctx
, hdr
->addr1
);
1091 ieee80211_tx_status_irqsafe(priv
->hw
, skb
);
1096 WARN_ON(!is_agg
&& freed
!= 1);
1099 iwl_check_abort_status(priv
, tx_resp
->frame_count
, status
);
1100 spin_unlock_irqrestore(&priv
->shrd
->sta_lock
, flags
);
1105 * iwlagn_rx_reply_compressed_ba - Handler for REPLY_COMPRESSED_BA
1107 * Handles block-acknowledge notification from device, which reports success
1108 * of frames sent via aggregation.
1110 int iwlagn_rx_reply_compressed_ba(struct iwl_priv
*priv
,
1111 struct iwl_rx_mem_buffer
*rxb
,
1112 struct iwl_device_cmd
*cmd
)
1114 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
1115 struct iwl_compressed_ba_resp
*ba_resp
= &pkt
->u
.compressed_ba
;
1116 struct iwl_ht_agg
*agg
;
1117 struct sk_buff_head reclaimed_skbs
;
1118 struct ieee80211_tx_info
*info
;
1119 struct ieee80211_hdr
*hdr
;
1120 struct sk_buff
*skb
;
1121 unsigned long flags
;
1126 /* "flow" corresponds to Tx queue */
1127 u16 scd_flow
= le16_to_cpu(ba_resp
->scd_flow
);
1129 /* "ssn" is start of block-ack Tx window, corresponds to index
1130 * (in Tx queue's circular buffer) of first TFD/frame in window */
1131 u16 ba_resp_scd_ssn
= le16_to_cpu(ba_resp
->scd_ssn
);
1133 if (scd_flow
>= hw_params(priv
).max_txq_num
) {
1135 "BUG_ON scd_flow is bigger than number of queues\n");
1139 sta_id
= ba_resp
->sta_id
;
1141 agg
= &priv
->tid_data
[sta_id
][tid
].agg
;
1143 spin_lock_irqsave(&priv
->shrd
->sta_lock
, flags
);
1145 if (unlikely(!agg
->wait_for_ba
)) {
1146 if (unlikely(ba_resp
->bitmap
))
1147 IWL_ERR(priv
, "Received BA when not expected\n");
1148 spin_unlock_irqrestore(&priv
->shrd
->sta_lock
, flags
);
1152 __skb_queue_head_init(&reclaimed_skbs
);
1154 /* Release all TFDs before the SSN, i.e. all TFDs in front of
1155 * block-ack window (we assume that they've been successfully
1156 * transmitted ... if not, it's too late anyway). */
1157 if (iwl_trans_reclaim(trans(priv
), sta_id
, tid
, scd_flow
,
1158 ba_resp_scd_ssn
, 0, &reclaimed_skbs
)) {
1159 spin_unlock_irqrestore(&priv
->shrd
->sta_lock
, flags
);
1163 IWL_DEBUG_TX_REPLY(priv
, "REPLY_COMPRESSED_BA [%d] Received from %pM, "
1166 (u8
*) &ba_resp
->sta_addr_lo32
,
1168 IWL_DEBUG_TX_REPLY(priv
, "TID = %d, SeqCtl = %d, bitmap = 0x%llx, "
1169 "scd_flow = %d, scd_ssn = %d\n",
1170 ba_resp
->tid
, le16_to_cpu(ba_resp
->seq_ctl
),
1171 (unsigned long long)le64_to_cpu(ba_resp
->bitmap
),
1172 scd_flow
, ba_resp_scd_ssn
);
1174 /* Mark that the expected block-ack response arrived */
1175 agg
->wait_for_ba
= false;
1177 /* Sanity check values reported by uCode */
1178 if (ba_resp
->txed_2_done
> ba_resp
->txed
) {
1179 IWL_DEBUG_TX_REPLY(priv
,
1180 "bogus sent(%d) and ack(%d) count\n",
1181 ba_resp
->txed
, ba_resp
->txed_2_done
);
1183 * set txed_2_done = txed,
1184 * so it won't impact rate scale
1186 ba_resp
->txed
= ba_resp
->txed_2_done
;
1188 IWL_DEBUG_HT(priv
, "agg frames sent:%d, acked:%d\n",
1189 ba_resp
->txed
, ba_resp
->txed_2_done
);
1191 priv
->tid_data
[sta_id
][tid
].next_reclaimed
= ba_resp_scd_ssn
;
1193 iwlagn_check_ratid_empty(priv
, sta_id
, tid
);
1195 while (!skb_queue_empty(&reclaimed_skbs
)) {
1197 skb
= __skb_dequeue(&reclaimed_skbs
);
1198 hdr
= (struct ieee80211_hdr
*)skb
->data
;
1200 if (ieee80211_is_data_qos(hdr
->frame_control
))
1205 info
= IEEE80211_SKB_CB(skb
);
1206 kmem_cache_free(priv
->tx_cmd_pool
, (info
->driver_data
[1]));
1209 /* this is the first skb we deliver in this batch */
1210 /* put the rate scaling data there */
1211 info
= IEEE80211_SKB_CB(skb
);
1212 memset(&info
->status
, 0, sizeof(info
->status
));
1213 info
->flags
|= IEEE80211_TX_STAT_ACK
;
1214 info
->flags
|= IEEE80211_TX_STAT_AMPDU
;
1215 info
->status
.ampdu_ack_len
= ba_resp
->txed_2_done
;
1216 info
->status
.ampdu_len
= ba_resp
->txed
;
1217 iwlagn_hwrate_to_tx_control(priv
, agg
->rate_n_flags
,
1221 ieee80211_tx_status_irqsafe(priv
->hw
, skb
);
1224 spin_unlock_irqrestore(&priv
->shrd
->sta_lock
, flags
);