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>
36 #include "iwl-trans.h"
37 #include "iwl-agn-hw.h"
41 static const u8 tid_to_ac
[] = {
52 static void iwlagn_tx_cmd_protection(struct iwl_priv
*priv
,
53 struct ieee80211_tx_info
*info
,
54 __le16 fc
, __le32
*tx_flags
)
56 if (info
->control
.rates
[0].flags
& IEEE80211_TX_RC_USE_RTS_CTS
||
57 info
->control
.rates
[0].flags
& IEEE80211_TX_RC_USE_CTS_PROTECT
||
58 info
->flags
& IEEE80211_TX_CTL_AMPDU
)
59 *tx_flags
|= TX_CMD_FLG_PROT_REQUIRE_MSK
;
63 * handle build REPLY_TX command notification.
65 static void iwlagn_tx_cmd_build_basic(struct iwl_priv
*priv
,
67 struct iwl_tx_cmd
*tx_cmd
,
68 struct ieee80211_tx_info
*info
,
69 struct ieee80211_hdr
*hdr
, u8 sta_id
)
71 __le16 fc
= hdr
->frame_control
;
72 __le32 tx_flags
= tx_cmd
->tx_flags
;
74 tx_cmd
->stop_time
.life_time
= TX_CMD_LIFE_TIME_INFINITE
;
76 if (!(info
->flags
& IEEE80211_TX_CTL_NO_ACK
))
77 tx_flags
|= TX_CMD_FLG_ACK_MSK
;
79 tx_flags
&= ~TX_CMD_FLG_ACK_MSK
;
81 if (ieee80211_is_probe_resp(fc
))
82 tx_flags
|= TX_CMD_FLG_TSF_MSK
;
83 else if (ieee80211_is_back_req(fc
))
84 tx_flags
|= TX_CMD_FLG_ACK_MSK
| TX_CMD_FLG_IMM_BA_RSP_MASK
;
85 else if (info
->band
== IEEE80211_BAND_2GHZ
&&
86 priv
->cfg
->bt_params
&&
87 priv
->cfg
->bt_params
->advanced_bt_coexist
&&
88 (ieee80211_is_auth(fc
) || ieee80211_is_assoc_req(fc
) ||
89 ieee80211_is_reassoc_req(fc
) ||
90 skb
->protocol
== cpu_to_be16(ETH_P_PAE
)))
91 tx_flags
|= TX_CMD_FLG_IGNORE_BT
;
94 tx_cmd
->sta_id
= sta_id
;
95 if (ieee80211_has_morefrags(fc
))
96 tx_flags
|= TX_CMD_FLG_MORE_FRAG_MSK
;
98 if (ieee80211_is_data_qos(fc
)) {
99 u8
*qc
= ieee80211_get_qos_ctl(hdr
);
100 tx_cmd
->tid_tspec
= qc
[0] & 0xf;
101 tx_flags
&= ~TX_CMD_FLG_SEQ_CTL_MSK
;
103 tx_cmd
->tid_tspec
= IWL_TID_NON_QOS
;
104 if (info
->flags
& IEEE80211_TX_CTL_ASSIGN_SEQ
)
105 tx_flags
|= TX_CMD_FLG_SEQ_CTL_MSK
;
107 tx_flags
&= ~TX_CMD_FLG_SEQ_CTL_MSK
;
110 iwlagn_tx_cmd_protection(priv
, info
, fc
, &tx_flags
);
112 tx_flags
&= ~(TX_CMD_FLG_ANT_SEL_MSK
);
113 if (ieee80211_is_mgmt(fc
)) {
114 if (ieee80211_is_assoc_req(fc
) || ieee80211_is_reassoc_req(fc
))
115 tx_cmd
->timeout
.pm_frame_timeout
= cpu_to_le16(3);
117 tx_cmd
->timeout
.pm_frame_timeout
= cpu_to_le16(2);
119 tx_cmd
->timeout
.pm_frame_timeout
= 0;
122 tx_cmd
->driver_txop
= 0;
123 tx_cmd
->tx_flags
= tx_flags
;
124 tx_cmd
->next_frame_len
= 0;
127 static void iwlagn_tx_cmd_build_rate(struct iwl_priv
*priv
,
128 struct iwl_tx_cmd
*tx_cmd
,
129 struct ieee80211_tx_info
*info
,
130 struct ieee80211_sta
*sta
,
140 rts_retry_limit
= IWLAGN_LOW_RETRY_LIMIT
;
141 data_retry_limit
= IWLAGN_LOW_RETRY_LIMIT
;
143 /* Set retry limit on RTS packets */
144 rts_retry_limit
= IWLAGN_RTS_DFAULT_RETRY_LIMIT
;
146 /* Set retry limit on DATA packets and Probe Responses*/
147 if (ieee80211_is_probe_resp(fc
)) {
148 data_retry_limit
= IWLAGN_MGMT_DFAULT_RETRY_LIMIT
;
150 min(data_retry_limit
, rts_retry_limit
);
151 } else if (ieee80211_is_back_req(fc
))
152 data_retry_limit
= IWLAGN_BAR_DFAULT_RETRY_LIMIT
;
154 data_retry_limit
= IWLAGN_DEFAULT_TX_RETRY
;
157 tx_cmd
->data_retry_limit
= data_retry_limit
;
158 tx_cmd
->rts_retry_limit
= rts_retry_limit
;
160 /* DATA packets will use the uCode station table for rate/antenna
162 if (ieee80211_is_data(fc
)) {
163 tx_cmd
->initial_rate_index
= 0;
164 tx_cmd
->tx_flags
|= TX_CMD_FLG_STA_RATE_MSK
;
165 #ifdef CONFIG_IWLWIFI_DEVICE_TESTMODE
166 if (priv
->tm_fixed_rate
) {
168 * rate overwrite by testmode
169 * we not only send lq command to change rate
170 * we also re-enforce per data pkt base.
172 tx_cmd
->tx_flags
&= ~TX_CMD_FLG_STA_RATE_MSK
;
173 memcpy(&tx_cmd
->rate_n_flags
, &priv
->tm_fixed_rate
,
174 sizeof(tx_cmd
->rate_n_flags
));
178 } else if (ieee80211_is_back_req(fc
))
179 tx_cmd
->tx_flags
|= TX_CMD_FLG_STA_RATE_MSK
;
182 * If the current TX rate stored in mac80211 has the MCS bit set, it's
183 * not really a TX rate. Thus, we use the lowest supported rate for
184 * this band. Also use the lowest supported rate if the stored rate
187 rate_idx
= info
->control
.rates
[0].idx
;
188 if (info
->control
.rates
[0].flags
& IEEE80211_TX_RC_MCS
||
189 (rate_idx
< 0) || (rate_idx
> IWL_RATE_COUNT_LEGACY
))
190 rate_idx
= rate_lowest_index(
191 &priv
->nvm_data
->bands
[info
->band
], sta
);
192 /* For 5 GHZ band, remap mac80211 rate indices into driver indices */
193 if (info
->band
== IEEE80211_BAND_5GHZ
)
194 rate_idx
+= IWL_FIRST_OFDM_RATE
;
195 /* Get PLCP rate for tx_cmd->rate_n_flags */
196 rate_plcp
= iwl_rates
[rate_idx
].plcp
;
197 /* Zero out flags for this packet */
200 /* Set CCK flag as needed */
201 if ((rate_idx
>= IWL_FIRST_CCK_RATE
) && (rate_idx
<= IWL_LAST_CCK_RATE
))
202 rate_flags
|= RATE_MCS_CCK_MSK
;
204 /* Set up antennas */
205 if (priv
->cfg
->bt_params
&&
206 priv
->cfg
->bt_params
->advanced_bt_coexist
&&
207 priv
->bt_full_concurrent
) {
208 /* operated as 1x1 in full concurrency mode */
209 priv
->mgmt_tx_ant
= iwl_toggle_tx_ant(priv
, priv
->mgmt_tx_ant
,
210 first_antenna(priv
->nvm_data
->valid_tx_ant
));
212 priv
->mgmt_tx_ant
= iwl_toggle_tx_ant(
213 priv
, priv
->mgmt_tx_ant
,
214 priv
->nvm_data
->valid_tx_ant
);
215 rate_flags
|= iwl_ant_idx_to_flags(priv
->mgmt_tx_ant
);
217 /* Set the rate in the TX cmd */
218 tx_cmd
->rate_n_flags
= iwl_hw_set_rate_n_flags(rate_plcp
, rate_flags
);
221 static void iwlagn_tx_cmd_build_hwcrypto(struct iwl_priv
*priv
,
222 struct ieee80211_tx_info
*info
,
223 struct iwl_tx_cmd
*tx_cmd
,
224 struct sk_buff
*skb_frag
)
226 struct ieee80211_key_conf
*keyconf
= info
->control
.hw_key
;
228 switch (keyconf
->cipher
) {
229 case WLAN_CIPHER_SUITE_CCMP
:
230 tx_cmd
->sec_ctl
= TX_CMD_SEC_CCM
;
231 memcpy(tx_cmd
->key
, keyconf
->key
, keyconf
->keylen
);
232 if (info
->flags
& IEEE80211_TX_CTL_AMPDU
)
233 tx_cmd
->tx_flags
|= TX_CMD_FLG_AGG_CCMP_MSK
;
234 IWL_DEBUG_TX(priv
, "tx_cmd with AES hwcrypto\n");
237 case WLAN_CIPHER_SUITE_TKIP
:
238 tx_cmd
->sec_ctl
= TX_CMD_SEC_TKIP
;
239 ieee80211_get_tkip_p2k(keyconf
, skb_frag
, tx_cmd
->key
);
240 IWL_DEBUG_TX(priv
, "tx_cmd with tkip hwcrypto\n");
243 case WLAN_CIPHER_SUITE_WEP104
:
244 tx_cmd
->sec_ctl
|= TX_CMD_SEC_KEY128
;
246 case WLAN_CIPHER_SUITE_WEP40
:
247 tx_cmd
->sec_ctl
|= (TX_CMD_SEC_WEP
|
248 (keyconf
->keyidx
& TX_CMD_SEC_MSK
) << TX_CMD_SEC_SHIFT
);
250 memcpy(&tx_cmd
->key
[3], keyconf
->key
, keyconf
->keylen
);
252 IWL_DEBUG_TX(priv
, "Configuring packet for WEP encryption "
253 "with key %d\n", keyconf
->keyidx
);
257 IWL_ERR(priv
, "Unknown encode cipher %x\n", keyconf
->cipher
);
263 * iwl_sta_id_or_broadcast - return sta_id or broadcast sta
264 * @context: the current context
265 * @sta: mac80211 station
267 * In certain circumstances mac80211 passes a station pointer
268 * that may be %NULL, for example during TX or key setup. In
269 * that case, we need to use the broadcast station, so this
270 * inline wraps that pattern.
272 static int iwl_sta_id_or_broadcast(struct iwl_rxon_context
*context
,
273 struct ieee80211_sta
*sta
)
278 return context
->bcast_sta_id
;
280 sta_id
= iwl_sta_id(sta
);
283 * mac80211 should not be passing a partially
284 * initialised station!
286 WARN_ON(sta_id
== IWL_INVALID_STATION
);
292 * start REPLY_TX command process
294 int iwlagn_tx_skb(struct iwl_priv
*priv
,
295 struct ieee80211_sta
*sta
,
298 struct ieee80211_hdr
*hdr
= (struct ieee80211_hdr
*)skb
->data
;
299 struct ieee80211_tx_info
*info
= IEEE80211_SKB_CB(skb
);
300 struct iwl_station_priv
*sta_priv
= NULL
;
301 struct iwl_rxon_context
*ctx
= &priv
->contexts
[IWL_RXON_CTX_BSS
];
302 struct iwl_device_cmd
*dev_cmd
;
303 struct iwl_tx_cmd
*tx_cmd
;
306 u16 len
, seq_number
= 0;
307 u8 sta_id
, tid
= IWL_MAX_TID_COUNT
;
308 bool is_agg
= false, is_data_qos
= false;
311 if (info
->control
.vif
)
312 ctx
= iwl_rxon_ctx_from_vif(info
->control
.vif
);
314 if (iwl_is_rfkill(priv
)) {
315 IWL_DEBUG_DROP(priv
, "Dropping - RF KILL\n");
316 goto drop_unlock_priv
;
319 fc
= hdr
->frame_control
;
321 #ifdef CONFIG_IWLWIFI_DEBUG
322 if (ieee80211_is_auth(fc
))
323 IWL_DEBUG_TX(priv
, "Sending AUTH frame\n");
324 else if (ieee80211_is_assoc_req(fc
))
325 IWL_DEBUG_TX(priv
, "Sending ASSOC frame\n");
326 else if (ieee80211_is_reassoc_req(fc
))
327 IWL_DEBUG_TX(priv
, "Sending REASSOC frame\n");
330 if (unlikely(ieee80211_is_probe_resp(fc
))) {
331 struct iwl_wipan_noa_data
*noa_data
=
332 rcu_dereference(priv
->noa_data
);
335 pskb_expand_head(skb
, 0, noa_data
->length
,
337 memcpy(skb_put(skb
, noa_data
->length
),
338 noa_data
->data
, noa_data
->length
);
339 hdr
= (struct ieee80211_hdr
*)skb
->data
;
343 hdr_len
= ieee80211_hdrlen(fc
);
345 /* For management frames use broadcast id to do not break aggregation */
346 if (!ieee80211_is_data(fc
))
347 sta_id
= ctx
->bcast_sta_id
;
349 /* Find index into station table for destination station */
350 sta_id
= iwl_sta_id_or_broadcast(ctx
, sta
);
351 if (sta_id
== IWL_INVALID_STATION
) {
352 IWL_DEBUG_DROP(priv
, "Dropping - INVALID STATION: %pM\n",
354 goto drop_unlock_priv
;
358 IWL_DEBUG_TX(priv
, "station Id %d\n", sta_id
);
361 sta_priv
= (void *)sta
->drv_priv
;
363 if (sta_priv
&& sta_priv
->asleep
&&
364 (info
->flags
& IEEE80211_TX_CTL_NO_PS_BUFFER
)) {
366 * This sends an asynchronous command to the device,
367 * but we can rely on it being processed before the
368 * next frame is processed -- and the next frame to
369 * this station is the one that will consume this
371 * For now set the counter to just 1 since we do not
374 * FIXME: If we get two non-bufferable frames one
375 * after the other, we might only send out one of
376 * them because this is racy.
378 iwl_sta_modify_sleep_tx_count(priv
, sta_id
, 1);
381 dev_cmd
= iwl_trans_alloc_tx_cmd(priv
->trans
);
383 if (unlikely(!dev_cmd
))
384 goto drop_unlock_priv
;
386 memset(dev_cmd
, 0, sizeof(*dev_cmd
));
387 tx_cmd
= (struct iwl_tx_cmd
*) dev_cmd
->payload
;
389 /* Total # bytes to be transmitted */
391 tx_cmd
->len
= cpu_to_le16(len
);
393 if (info
->control
.hw_key
)
394 iwlagn_tx_cmd_build_hwcrypto(priv
, info
, tx_cmd
, skb
);
396 /* TODO need this for burst mode later on */
397 iwlagn_tx_cmd_build_basic(priv
, skb
, tx_cmd
, info
, hdr
, sta_id
);
399 iwlagn_tx_cmd_build_rate(priv
, tx_cmd
, info
, sta
, fc
);
401 memset(&info
->status
, 0, sizeof(info
->status
));
403 info
->driver_data
[0] = ctx
;
404 info
->driver_data
[1] = dev_cmd
;
405 /* From now on, we cannot access info->control */
407 spin_lock(&priv
->sta_lock
);
409 if (ieee80211_is_data_qos(fc
) && !ieee80211_is_qos_nullfunc(fc
)) {
411 struct iwl_tid_data
*tid_data
;
412 qc
= ieee80211_get_qos_ctl(hdr
);
413 tid
= qc
[0] & IEEE80211_QOS_CTL_TID_MASK
;
414 if (WARN_ON_ONCE(tid
>= IWL_MAX_TID_COUNT
))
415 goto drop_unlock_sta
;
416 tid_data
= &priv
->tid_data
[sta_id
][tid
];
418 /* aggregation is on for this <sta,tid> */
419 if (info
->flags
& IEEE80211_TX_CTL_AMPDU
&&
420 tid_data
->agg
.state
!= IWL_AGG_ON
) {
421 IWL_ERR(priv
, "TX_CTL_AMPDU while not in AGG:"
422 " Tx flags = 0x%08x, agg.state = %d",
423 info
->flags
, tid_data
->agg
.state
);
424 IWL_ERR(priv
, "sta_id = %d, tid = %d seq_num = %d",
425 sta_id
, tid
, SEQ_TO_SN(tid_data
->seq_number
));
426 goto drop_unlock_sta
;
429 /* We can receive packets from the stack in IWL_AGG_{ON,OFF}
430 * only. Check this here.
432 if (WARN_ONCE(tid_data
->agg
.state
!= IWL_AGG_ON
&&
433 tid_data
->agg
.state
!= IWL_AGG_OFF
,
434 "Tx while agg.state = %d", tid_data
->agg
.state
))
435 goto drop_unlock_sta
;
437 seq_number
= tid_data
->seq_number
;
438 seq_number
&= IEEE80211_SCTL_SEQ
;
439 hdr
->seq_ctrl
&= cpu_to_le16(IEEE80211_SCTL_FRAG
);
440 hdr
->seq_ctrl
|= cpu_to_le16(seq_number
);
443 if (info
->flags
& IEEE80211_TX_CTL_AMPDU
)
448 /* Copy MAC header from skb into command buffer */
449 memcpy(tx_cmd
->hdr
, hdr
, hdr_len
);
452 txq_id
= priv
->tid_data
[sta_id
][tid
].agg
.txq_id
;
453 else if (info
->flags
& IEEE80211_TX_CTL_SEND_AFTER_DTIM
) {
455 * Send this frame after DTIM -- there's a special queue
456 * reserved for this for contexts that support AP mode.
458 txq_id
= ctx
->mcast_queue
;
461 * The microcode will clear the more data
462 * bit in the last frame it transmits.
464 hdr
->frame_control
|=
465 cpu_to_le16(IEEE80211_FCTL_MOREDATA
);
466 } else if (info
->flags
& IEEE80211_TX_CTL_TX_OFFCHAN
)
467 txq_id
= IWL_AUX_QUEUE
;
469 txq_id
= ctx
->ac_to_queue
[skb_get_queue_mapping(skb
)];
471 WARN_ON_ONCE(!is_agg
&& txq_id
!= info
->hw_queue
);
472 WARN_ON_ONCE(is_agg
&&
473 priv
->queue_to_mac80211
[txq_id
] != info
->hw_queue
);
475 if (iwl_trans_tx(priv
->trans
, skb
, dev_cmd
, txq_id
))
476 goto drop_unlock_sta
;
478 if (is_data_qos
&& !ieee80211_has_morefrags(fc
))
479 priv
->tid_data
[sta_id
][tid
].seq_number
= seq_number
;
481 spin_unlock(&priv
->sta_lock
);
484 * Avoid atomic ops if it isn't an associated client.
485 * Also, if this is a packet for aggregation, don't
486 * increase the counter because the ucode will stop
487 * aggregation queues when their respective station
490 if (sta_priv
&& sta_priv
->client
&& !is_agg
)
491 atomic_inc(&sta_priv
->pending_frames
);
493 if (info
->flags
& IEEE80211_TX_CTL_TX_OFFCHAN
)
494 iwl_scan_offchannel_skb(priv
);
500 iwl_trans_free_tx_cmd(priv
->trans
, dev_cmd
);
501 spin_unlock(&priv
->sta_lock
);
506 static int iwlagn_alloc_agg_txq(struct iwl_priv
*priv
, int mq
)
510 for (q
= IWLAGN_FIRST_AMPDU_QUEUE
;
511 q
< priv
->cfg
->base_params
->num_of_queues
; q
++) {
512 if (!test_and_set_bit(q
, priv
->agg_q_alloc
)) {
513 priv
->queue_to_mac80211
[q
] = mq
;
521 static void iwlagn_dealloc_agg_txq(struct iwl_priv
*priv
, int q
)
523 clear_bit(q
, priv
->agg_q_alloc
);
524 priv
->queue_to_mac80211
[q
] = IWL_INVALID_MAC80211_QUEUE
;
527 int iwlagn_tx_agg_stop(struct iwl_priv
*priv
, struct ieee80211_vif
*vif
,
528 struct ieee80211_sta
*sta
, u16 tid
)
530 struct iwl_tid_data
*tid_data
;
532 enum iwl_agg_state agg_state
;
534 sta_id
= iwl_sta_id(sta
);
536 if (sta_id
== IWL_INVALID_STATION
) {
537 IWL_ERR(priv
, "Invalid station for AGG tid %d\n", tid
);
541 spin_lock_bh(&priv
->sta_lock
);
543 tid_data
= &priv
->tid_data
[sta_id
][tid
];
544 txq_id
= tid_data
->agg
.txq_id
;
546 switch (tid_data
->agg
.state
) {
547 case IWL_EMPTYING_HW_QUEUE_ADDBA
:
549 * This can happen if the peer stops aggregation
550 * again before we've had a chance to drain the
551 * queue we selected previously, i.e. before the
552 * session was really started completely.
554 IWL_DEBUG_HT(priv
, "AGG stop before setup done\n");
556 case IWL_AGG_STARTING
:
558 * This can happen when the session is stopped before
559 * we receive ADDBA response
561 IWL_DEBUG_HT(priv
, "AGG stop before AGG became operational\n");
567 "Stopping AGG while state not ON or starting for %d on %d (%d)\n",
568 sta_id
, tid
, tid_data
->agg
.state
);
569 spin_unlock_bh(&priv
->sta_lock
);
573 tid_data
->agg
.ssn
= SEQ_TO_SN(tid_data
->seq_number
);
575 /* There are still packets for this RA / TID in the HW */
576 if (!test_bit(txq_id
, priv
->agg_q_alloc
)) {
577 IWL_DEBUG_TX_QUEUES(priv
,
578 "stopping AGG on STA/TID %d/%d but hwq %d not used\n",
579 sta_id
, tid
, txq_id
);
580 } else if (tid_data
->agg
.ssn
!= tid_data
->next_reclaimed
) {
581 IWL_DEBUG_TX_QUEUES(priv
,
582 "Can't proceed: ssn %d, next_recl = %d\n",
584 tid_data
->next_reclaimed
);
585 tid_data
->agg
.state
= IWL_EMPTYING_HW_QUEUE_DELBA
;
586 spin_unlock_bh(&priv
->sta_lock
);
590 IWL_DEBUG_TX_QUEUES(priv
, "Can proceed: ssn = next_recl = %d\n",
593 agg_state
= tid_data
->agg
.state
;
594 tid_data
->agg
.state
= IWL_AGG_OFF
;
596 spin_unlock_bh(&priv
->sta_lock
);
598 if (test_bit(txq_id
, priv
->agg_q_alloc
)) {
600 * If the transport didn't know that we wanted to start
601 * agreggation, don't tell it that we want to stop them.
602 * This can happen when we don't get the addBA response on
603 * time, or we hadn't time to drain the AC queues.
605 if (agg_state
== IWL_AGG_ON
)
606 iwl_trans_txq_disable(priv
->trans
, txq_id
);
608 IWL_DEBUG_TX_QUEUES(priv
, "Don't disable tx agg: %d\n",
610 iwlagn_dealloc_agg_txq(priv
, txq_id
);
613 ieee80211_stop_tx_ba_cb_irqsafe(vif
, sta
->addr
, tid
);
618 int iwlagn_tx_agg_start(struct iwl_priv
*priv
, struct ieee80211_vif
*vif
,
619 struct ieee80211_sta
*sta
, u16 tid
, u16
*ssn
)
621 struct iwl_rxon_context
*ctx
= iwl_rxon_ctx_from_vif(vif
);
622 struct iwl_tid_data
*tid_data
;
623 int sta_id
, txq_id
, ret
;
625 IWL_DEBUG_HT(priv
, "TX AGG request on ra = %pM tid = %d\n",
628 sta_id
= iwl_sta_id(sta
);
629 if (sta_id
== IWL_INVALID_STATION
) {
630 IWL_ERR(priv
, "Start AGG on invalid station\n");
633 if (unlikely(tid
>= IWL_MAX_TID_COUNT
))
636 if (priv
->tid_data
[sta_id
][tid
].agg
.state
!= IWL_AGG_OFF
) {
637 IWL_ERR(priv
, "Start AGG when state is not IWL_AGG_OFF !\n");
641 txq_id
= iwlagn_alloc_agg_txq(priv
, ctx
->ac_to_queue
[tid_to_ac
[tid
]]);
643 IWL_DEBUG_TX_QUEUES(priv
,
644 "No free aggregation queue for %pM/%d\n",
649 ret
= iwl_sta_tx_modify_enable_tid(priv
, sta_id
, tid
);
653 spin_lock_bh(&priv
->sta_lock
);
654 tid_data
= &priv
->tid_data
[sta_id
][tid
];
655 tid_data
->agg
.ssn
= SEQ_TO_SN(tid_data
->seq_number
);
656 tid_data
->agg
.txq_id
= txq_id
;
658 *ssn
= tid_data
->agg
.ssn
;
660 if (*ssn
== tid_data
->next_reclaimed
) {
661 IWL_DEBUG_TX_QUEUES(priv
, "Can proceed: ssn = next_recl = %d\n",
663 tid_data
->agg
.state
= IWL_AGG_STARTING
;
664 ieee80211_start_tx_ba_cb_irqsafe(vif
, sta
->addr
, tid
);
666 IWL_DEBUG_TX_QUEUES(priv
, "Can't proceed: ssn %d, "
667 "next_reclaimed = %d\n",
669 tid_data
->next_reclaimed
);
670 tid_data
->agg
.state
= IWL_EMPTYING_HW_QUEUE_ADDBA
;
672 spin_unlock_bh(&priv
->sta_lock
);
677 int iwlagn_tx_agg_oper(struct iwl_priv
*priv
, struct ieee80211_vif
*vif
,
678 struct ieee80211_sta
*sta
, u16 tid
, u8 buf_size
)
680 struct iwl_station_priv
*sta_priv
= (void *) sta
->drv_priv
;
681 struct iwl_rxon_context
*ctx
= iwl_rxon_ctx_from_vif(vif
);
685 buf_size
= min_t(int, buf_size
, LINK_QUAL_AGG_FRAME_LIMIT_DEF
);
687 spin_lock_bh(&priv
->sta_lock
);
688 ssn
= priv
->tid_data
[sta_priv
->sta_id
][tid
].agg
.ssn
;
689 q
= priv
->tid_data
[sta_priv
->sta_id
][tid
].agg
.txq_id
;
690 priv
->tid_data
[sta_priv
->sta_id
][tid
].agg
.state
= IWL_AGG_ON
;
691 spin_unlock_bh(&priv
->sta_lock
);
693 fifo
= ctx
->ac_to_fifo
[tid_to_ac
[tid
]];
695 iwl_trans_txq_enable(priv
->trans
, q
, fifo
, sta_priv
->sta_id
, tid
,
699 * If the limit is 0, then it wasn't initialised yet,
700 * use the default. We can do that since we take the
701 * minimum below, and we don't want to go above our
702 * default due to hardware restrictions.
704 if (sta_priv
->max_agg_bufsize
== 0)
705 sta_priv
->max_agg_bufsize
=
706 LINK_QUAL_AGG_FRAME_LIMIT_DEF
;
709 * Even though in theory the peer could have different
710 * aggregation reorder buffer sizes for different sessions,
711 * our ucode doesn't allow for that and has a global limit
712 * for each station. Therefore, use the minimum of all the
713 * aggregation sessions and our default value.
715 sta_priv
->max_agg_bufsize
=
716 min(sta_priv
->max_agg_bufsize
, buf_size
);
718 if (priv
->hw_params
.use_rts_for_aggregation
) {
720 * switch to RTS/CTS if it is the prefer protection
721 * method for HT traffic
724 sta_priv
->lq_sta
.lq
.general_params
.flags
|=
725 LINK_QUAL_FLAGS_SET_STA_TLC_RTS_MSK
;
727 priv
->agg_tids_count
++;
728 IWL_DEBUG_HT(priv
, "priv->agg_tids_count = %u\n",
729 priv
->agg_tids_count
);
731 sta_priv
->lq_sta
.lq
.agg_params
.agg_frame_cnt_limit
=
732 sta_priv
->max_agg_bufsize
;
734 IWL_DEBUG_HT(priv
, "Tx aggregation enabled on ra = %pM tid = %d\n",
737 return iwl_send_lq_cmd(priv
, ctx
,
738 &sta_priv
->lq_sta
.lq
, CMD_ASYNC
, false);
741 static void iwlagn_check_ratid_empty(struct iwl_priv
*priv
, int sta_id
, u8 tid
)
743 struct iwl_tid_data
*tid_data
= &priv
->tid_data
[sta_id
][tid
];
744 enum iwl_rxon_context_id ctx
;
745 struct ieee80211_vif
*vif
;
748 lockdep_assert_held(&priv
->sta_lock
);
750 addr
= priv
->stations
[sta_id
].sta
.sta
.addr
;
751 ctx
= priv
->stations
[sta_id
].ctxid
;
752 vif
= priv
->contexts
[ctx
].vif
;
754 switch (priv
->tid_data
[sta_id
][tid
].agg
.state
) {
755 case IWL_EMPTYING_HW_QUEUE_DELBA
:
756 /* There are no packets for this RA / TID in the HW any more */
757 if (tid_data
->agg
.ssn
== tid_data
->next_reclaimed
) {
758 IWL_DEBUG_TX_QUEUES(priv
,
759 "Can continue DELBA flow ssn = next_recl ="
760 " %d", tid_data
->next_reclaimed
);
761 iwl_trans_txq_disable(priv
->trans
,
762 tid_data
->agg
.txq_id
);
763 iwlagn_dealloc_agg_txq(priv
, tid_data
->agg
.txq_id
);
764 tid_data
->agg
.state
= IWL_AGG_OFF
;
765 ieee80211_stop_tx_ba_cb_irqsafe(vif
, addr
, tid
);
768 case IWL_EMPTYING_HW_QUEUE_ADDBA
:
769 /* There are no packets for this RA / TID in the HW any more */
770 if (tid_data
->agg
.ssn
== tid_data
->next_reclaimed
) {
771 IWL_DEBUG_TX_QUEUES(priv
,
772 "Can continue ADDBA flow ssn = next_recl ="
773 " %d", tid_data
->next_reclaimed
);
774 tid_data
->agg
.state
= IWL_AGG_STARTING
;
775 ieee80211_start_tx_ba_cb_irqsafe(vif
, addr
, tid
);
783 static void iwlagn_non_agg_tx_status(struct iwl_priv
*priv
,
784 struct iwl_rxon_context
*ctx
,
787 struct ieee80211_sta
*sta
;
788 struct iwl_station_priv
*sta_priv
;
791 sta
= ieee80211_find_sta(ctx
->vif
, addr1
);
793 sta_priv
= (void *)sta
->drv_priv
;
794 /* avoid atomic ops if this isn't a client */
795 if (sta_priv
->client
&&
796 atomic_dec_return(&sta_priv
->pending_frames
) == 0)
797 ieee80211_sta_block_awake(priv
->hw
, sta
, false);
803 * translate ucode response to mac80211 tx status control values
805 static void iwlagn_hwrate_to_tx_control(struct iwl_priv
*priv
, u32 rate_n_flags
,
806 struct ieee80211_tx_info
*info
)
808 struct ieee80211_tx_rate
*r
= &info
->status
.rates
[0];
810 info
->status
.antenna
=
811 ((rate_n_flags
& RATE_MCS_ANT_ABC_MSK
) >> RATE_MCS_ANT_POS
);
812 if (rate_n_flags
& RATE_MCS_HT_MSK
)
813 r
->flags
|= IEEE80211_TX_RC_MCS
;
814 if (rate_n_flags
& RATE_MCS_GF_MSK
)
815 r
->flags
|= IEEE80211_TX_RC_GREEN_FIELD
;
816 if (rate_n_flags
& RATE_MCS_HT40_MSK
)
817 r
->flags
|= IEEE80211_TX_RC_40_MHZ_WIDTH
;
818 if (rate_n_flags
& RATE_MCS_DUP_MSK
)
819 r
->flags
|= IEEE80211_TX_RC_DUP_DATA
;
820 if (rate_n_flags
& RATE_MCS_SGI_MSK
)
821 r
->flags
|= IEEE80211_TX_RC_SHORT_GI
;
822 r
->idx
= iwlagn_hwrate_to_mac80211_idx(rate_n_flags
, info
->band
);
825 #ifdef CONFIG_IWLWIFI_DEBUG
826 const char *iwl_get_tx_fail_reason(u32 status
)
828 #define TX_STATUS_FAIL(x) case TX_STATUS_FAIL_ ## x: return #x
829 #define TX_STATUS_POSTPONE(x) case TX_STATUS_POSTPONE_ ## x: return #x
831 switch (status
& TX_STATUS_MSK
) {
832 case TX_STATUS_SUCCESS
:
834 TX_STATUS_POSTPONE(DELAY
);
835 TX_STATUS_POSTPONE(FEW_BYTES
);
836 TX_STATUS_POSTPONE(BT_PRIO
);
837 TX_STATUS_POSTPONE(QUIET_PERIOD
);
838 TX_STATUS_POSTPONE(CALC_TTAK
);
839 TX_STATUS_FAIL(INTERNAL_CROSSED_RETRY
);
840 TX_STATUS_FAIL(SHORT_LIMIT
);
841 TX_STATUS_FAIL(LONG_LIMIT
);
842 TX_STATUS_FAIL(FIFO_UNDERRUN
);
843 TX_STATUS_FAIL(DRAIN_FLOW
);
844 TX_STATUS_FAIL(RFKILL_FLUSH
);
845 TX_STATUS_FAIL(LIFE_EXPIRE
);
846 TX_STATUS_FAIL(DEST_PS
);
847 TX_STATUS_FAIL(HOST_ABORTED
);
848 TX_STATUS_FAIL(BT_RETRY
);
849 TX_STATUS_FAIL(STA_INVALID
);
850 TX_STATUS_FAIL(FRAG_DROPPED
);
851 TX_STATUS_FAIL(TID_DISABLE
);
852 TX_STATUS_FAIL(FIFO_FLUSHED
);
853 TX_STATUS_FAIL(INSUFFICIENT_CF_POLL
);
854 TX_STATUS_FAIL(PASSIVE_NO_RX
);
855 TX_STATUS_FAIL(NO_BEACON_ON_RADAR
);
860 #undef TX_STATUS_FAIL
861 #undef TX_STATUS_POSTPONE
863 #endif /* CONFIG_IWLWIFI_DEBUG */
865 static void iwlagn_count_agg_tx_err_status(struct iwl_priv
*priv
, u16 status
)
867 status
&= AGG_TX_STATUS_MSK
;
870 case AGG_TX_STATE_UNDERRUN_MSK
:
871 priv
->reply_agg_tx_stats
.underrun
++;
873 case AGG_TX_STATE_BT_PRIO_MSK
:
874 priv
->reply_agg_tx_stats
.bt_prio
++;
876 case AGG_TX_STATE_FEW_BYTES_MSK
:
877 priv
->reply_agg_tx_stats
.few_bytes
++;
879 case AGG_TX_STATE_ABORT_MSK
:
880 priv
->reply_agg_tx_stats
.abort
++;
882 case AGG_TX_STATE_LAST_SENT_TTL_MSK
:
883 priv
->reply_agg_tx_stats
.last_sent_ttl
++;
885 case AGG_TX_STATE_LAST_SENT_TRY_CNT_MSK
:
886 priv
->reply_agg_tx_stats
.last_sent_try
++;
888 case AGG_TX_STATE_LAST_SENT_BT_KILL_MSK
:
889 priv
->reply_agg_tx_stats
.last_sent_bt_kill
++;
891 case AGG_TX_STATE_SCD_QUERY_MSK
:
892 priv
->reply_agg_tx_stats
.scd_query
++;
894 case AGG_TX_STATE_TEST_BAD_CRC32_MSK
:
895 priv
->reply_agg_tx_stats
.bad_crc32
++;
897 case AGG_TX_STATE_RESPONSE_MSK
:
898 priv
->reply_agg_tx_stats
.response
++;
900 case AGG_TX_STATE_DUMP_TX_MSK
:
901 priv
->reply_agg_tx_stats
.dump_tx
++;
903 case AGG_TX_STATE_DELAY_TX_MSK
:
904 priv
->reply_agg_tx_stats
.delay_tx
++;
907 priv
->reply_agg_tx_stats
.unknown
++;
912 static void iwl_rx_reply_tx_agg(struct iwl_priv
*priv
,
913 struct iwlagn_tx_resp
*tx_resp
)
915 struct agg_tx_status
*frame_status
= &tx_resp
->status
;
916 int tid
= (tx_resp
->ra_tid
& IWLAGN_TX_RES_TID_MSK
) >>
917 IWLAGN_TX_RES_TID_POS
;
918 int sta_id
= (tx_resp
->ra_tid
& IWLAGN_TX_RES_RA_MSK
) >>
919 IWLAGN_TX_RES_RA_POS
;
920 struct iwl_ht_agg
*agg
= &priv
->tid_data
[sta_id
][tid
].agg
;
921 u32 status
= le16_to_cpu(tx_resp
->status
.status
);
924 WARN_ON(tid
== IWL_TID_NON_QOS
);
926 if (agg
->wait_for_ba
)
927 IWL_DEBUG_TX_REPLY(priv
,
928 "got tx response w/o block-ack\n");
930 agg
->rate_n_flags
= le32_to_cpu(tx_resp
->rate_n_flags
);
931 agg
->wait_for_ba
= (tx_resp
->frame_count
> 1);
934 * If the BT kill count is non-zero, we'll get this
935 * notification again.
937 if (tx_resp
->bt_kill_count
&& tx_resp
->frame_count
== 1 &&
938 priv
->cfg
->bt_params
&&
939 priv
->cfg
->bt_params
->advanced_bt_coexist
) {
940 IWL_DEBUG_COEX(priv
, "receive reply tx w/ bt_kill\n");
943 if (tx_resp
->frame_count
== 1)
946 /* Construct bit-map of pending frames within Tx window */
947 for (i
= 0; i
< tx_resp
->frame_count
; i
++) {
948 u16 fstatus
= le16_to_cpu(frame_status
[i
].status
);
950 if (status
& AGG_TX_STATUS_MSK
)
951 iwlagn_count_agg_tx_err_status(priv
, fstatus
);
953 if (status
& (AGG_TX_STATE_FEW_BYTES_MSK
|
954 AGG_TX_STATE_ABORT_MSK
))
957 IWL_DEBUG_TX_REPLY(priv
, "status %s (0x%08x), "
958 "try-count (0x%08x)\n",
959 iwl_get_agg_tx_fail_reason(fstatus
),
960 fstatus
& AGG_TX_STATUS_MSK
,
961 fstatus
& AGG_TX_TRY_MSK
);
965 #ifdef CONFIG_IWLWIFI_DEBUG
966 #define AGG_TX_STATE_FAIL(x) case AGG_TX_STATE_ ## x: return #x
968 const char *iwl_get_agg_tx_fail_reason(u16 status
)
970 status
&= AGG_TX_STATUS_MSK
;
972 case AGG_TX_STATE_TRANSMITTED
:
974 AGG_TX_STATE_FAIL(UNDERRUN_MSK
);
975 AGG_TX_STATE_FAIL(BT_PRIO_MSK
);
976 AGG_TX_STATE_FAIL(FEW_BYTES_MSK
);
977 AGG_TX_STATE_FAIL(ABORT_MSK
);
978 AGG_TX_STATE_FAIL(LAST_SENT_TTL_MSK
);
979 AGG_TX_STATE_FAIL(LAST_SENT_TRY_CNT_MSK
);
980 AGG_TX_STATE_FAIL(LAST_SENT_BT_KILL_MSK
);
981 AGG_TX_STATE_FAIL(SCD_QUERY_MSK
);
982 AGG_TX_STATE_FAIL(TEST_BAD_CRC32_MSK
);
983 AGG_TX_STATE_FAIL(RESPONSE_MSK
);
984 AGG_TX_STATE_FAIL(DUMP_TX_MSK
);
985 AGG_TX_STATE_FAIL(DELAY_TX_MSK
);
990 #endif /* CONFIG_IWLWIFI_DEBUG */
992 static inline u32
iwlagn_get_scd_ssn(struct iwlagn_tx_resp
*tx_resp
)
994 return le32_to_cpup((__le32
*)&tx_resp
->status
+
995 tx_resp
->frame_count
) & MAX_SN
;
998 static void iwlagn_count_tx_err_status(struct iwl_priv
*priv
, u16 status
)
1000 status
&= TX_STATUS_MSK
;
1003 case TX_STATUS_POSTPONE_DELAY
:
1004 priv
->reply_tx_stats
.pp_delay
++;
1006 case TX_STATUS_POSTPONE_FEW_BYTES
:
1007 priv
->reply_tx_stats
.pp_few_bytes
++;
1009 case TX_STATUS_POSTPONE_BT_PRIO
:
1010 priv
->reply_tx_stats
.pp_bt_prio
++;
1012 case TX_STATUS_POSTPONE_QUIET_PERIOD
:
1013 priv
->reply_tx_stats
.pp_quiet_period
++;
1015 case TX_STATUS_POSTPONE_CALC_TTAK
:
1016 priv
->reply_tx_stats
.pp_calc_ttak
++;
1018 case TX_STATUS_FAIL_INTERNAL_CROSSED_RETRY
:
1019 priv
->reply_tx_stats
.int_crossed_retry
++;
1021 case TX_STATUS_FAIL_SHORT_LIMIT
:
1022 priv
->reply_tx_stats
.short_limit
++;
1024 case TX_STATUS_FAIL_LONG_LIMIT
:
1025 priv
->reply_tx_stats
.long_limit
++;
1027 case TX_STATUS_FAIL_FIFO_UNDERRUN
:
1028 priv
->reply_tx_stats
.fifo_underrun
++;
1030 case TX_STATUS_FAIL_DRAIN_FLOW
:
1031 priv
->reply_tx_stats
.drain_flow
++;
1033 case TX_STATUS_FAIL_RFKILL_FLUSH
:
1034 priv
->reply_tx_stats
.rfkill_flush
++;
1036 case TX_STATUS_FAIL_LIFE_EXPIRE
:
1037 priv
->reply_tx_stats
.life_expire
++;
1039 case TX_STATUS_FAIL_DEST_PS
:
1040 priv
->reply_tx_stats
.dest_ps
++;
1042 case TX_STATUS_FAIL_HOST_ABORTED
:
1043 priv
->reply_tx_stats
.host_abort
++;
1045 case TX_STATUS_FAIL_BT_RETRY
:
1046 priv
->reply_tx_stats
.bt_retry
++;
1048 case TX_STATUS_FAIL_STA_INVALID
:
1049 priv
->reply_tx_stats
.sta_invalid
++;
1051 case TX_STATUS_FAIL_FRAG_DROPPED
:
1052 priv
->reply_tx_stats
.frag_drop
++;
1054 case TX_STATUS_FAIL_TID_DISABLE
:
1055 priv
->reply_tx_stats
.tid_disable
++;
1057 case TX_STATUS_FAIL_FIFO_FLUSHED
:
1058 priv
->reply_tx_stats
.fifo_flush
++;
1060 case TX_STATUS_FAIL_INSUFFICIENT_CF_POLL
:
1061 priv
->reply_tx_stats
.insuff_cf_poll
++;
1063 case TX_STATUS_FAIL_PASSIVE_NO_RX
:
1064 priv
->reply_tx_stats
.fail_hw_drop
++;
1066 case TX_STATUS_FAIL_NO_BEACON_ON_RADAR
:
1067 priv
->reply_tx_stats
.sta_color_mismatch
++;
1070 priv
->reply_tx_stats
.unknown
++;
1075 static void iwlagn_set_tx_status(struct iwl_priv
*priv
,
1076 struct ieee80211_tx_info
*info
,
1077 struct iwlagn_tx_resp
*tx_resp
)
1079 u16 status
= le16_to_cpu(tx_resp
->status
.status
);
1081 info
->status
.rates
[0].count
= tx_resp
->failure_frame
+ 1;
1082 info
->flags
|= iwl_tx_status_to_mac80211(status
);
1083 iwlagn_hwrate_to_tx_control(priv
, le32_to_cpu(tx_resp
->rate_n_flags
),
1085 if (!iwl_is_tx_success(status
))
1086 iwlagn_count_tx_err_status(priv
, status
);
1089 static void iwl_check_abort_status(struct iwl_priv
*priv
,
1090 u8 frame_count
, u32 status
)
1092 if (frame_count
== 1 && status
== TX_STATUS_FAIL_RFKILL_FLUSH
) {
1093 IWL_ERR(priv
, "Tx flush command to flush out all frames\n");
1094 if (!test_bit(STATUS_EXIT_PENDING
, &priv
->status
))
1095 queue_work(priv
->workqueue
, &priv
->tx_flush
);
1099 int iwlagn_rx_reply_tx(struct iwl_priv
*priv
, struct iwl_rx_cmd_buffer
*rxb
,
1100 struct iwl_device_cmd
*cmd
)
1102 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
1103 u16 sequence
= le16_to_cpu(pkt
->hdr
.sequence
);
1104 int txq_id
= SEQ_TO_QUEUE(sequence
);
1105 int cmd_index __maybe_unused
= SEQ_TO_INDEX(sequence
);
1106 struct iwlagn_tx_resp
*tx_resp
= (void *)pkt
->data
;
1107 struct ieee80211_hdr
*hdr
;
1108 u32 status
= le16_to_cpu(tx_resp
->status
.status
);
1109 u16 ssn
= iwlagn_get_scd_ssn(tx_resp
);
1113 struct ieee80211_tx_info
*info
;
1114 struct sk_buff_head skbs
;
1115 struct sk_buff
*skb
;
1116 struct iwl_rxon_context
*ctx
;
1117 bool is_agg
= (txq_id
>= IWLAGN_FIRST_AMPDU_QUEUE
);
1118 bool is_offchannel_skb
;
1120 tid
= (tx_resp
->ra_tid
& IWLAGN_TX_RES_TID_MSK
) >>
1121 IWLAGN_TX_RES_TID_POS
;
1122 sta_id
= (tx_resp
->ra_tid
& IWLAGN_TX_RES_RA_MSK
) >>
1123 IWLAGN_TX_RES_RA_POS
;
1125 spin_lock(&priv
->sta_lock
);
1128 iwl_rx_reply_tx_agg(priv
, tx_resp
);
1130 __skb_queue_head_init(&skbs
);
1132 is_offchannel_skb
= false;
1134 if (tx_resp
->frame_count
== 1) {
1135 u16 next_reclaimed
= le16_to_cpu(tx_resp
->seq_ctl
);
1136 next_reclaimed
= SEQ_TO_SN(next_reclaimed
+ 0x10);
1139 /* If this is an aggregation queue, we can rely on the
1140 * ssn since the wifi sequence number corresponds to
1141 * the index in the TFD ring (%256).
1142 * The seq_ctl is the sequence control of the packet
1143 * to which this Tx response relates. But if there is a
1144 * hole in the bitmap of the BA we received, this Tx
1145 * response may allow to reclaim the hole and all the
1146 * subsequent packets that were already acked.
1147 * In that case, seq_ctl != ssn, and the next packet
1148 * to be reclaimed will be ssn and not seq_ctl.
1150 next_reclaimed
= ssn
;
1153 if (tid
!= IWL_TID_NON_QOS
) {
1154 priv
->tid_data
[sta_id
][tid
].next_reclaimed
=
1156 IWL_DEBUG_TX_REPLY(priv
, "Next reclaimed packet:%d\n",
1160 iwl_trans_reclaim(priv
->trans
, txq_id
, ssn
, &skbs
);
1162 iwlagn_check_ratid_empty(priv
, sta_id
, tid
);
1165 /* process frames */
1166 skb_queue_walk(&skbs
, skb
) {
1167 hdr
= (struct ieee80211_hdr
*)skb
->data
;
1169 if (!ieee80211_is_data_qos(hdr
->frame_control
))
1170 priv
->last_seq_ctl
= tx_resp
->seq_ctl
;
1172 info
= IEEE80211_SKB_CB(skb
);
1173 ctx
= info
->driver_data
[0];
1174 iwl_trans_free_tx_cmd(priv
->trans
,
1175 info
->driver_data
[1]);
1177 memset(&info
->status
, 0, sizeof(info
->status
));
1179 if (status
== TX_STATUS_FAIL_PASSIVE_NO_RX
&&
1180 iwl_is_associated_ctx(ctx
) && ctx
->vif
&&
1181 ctx
->vif
->type
== NL80211_IFTYPE_STATION
) {
1182 /* block and stop all queues */
1183 priv
->passive_no_rx
= true;
1184 IWL_DEBUG_TX_QUEUES(priv
, "stop all queues: "
1186 ieee80211_stop_queues(priv
->hw
);
1188 IWL_DEBUG_TX_REPLY(priv
,
1189 "TXQ %d status %s (0x%08x) "
1190 "rate_n_flags 0x%x retries %d\n",
1192 iwl_get_tx_fail_reason(status
),
1194 le32_to_cpu(tx_resp
->rate_n_flags
),
1195 tx_resp
->failure_frame
);
1197 IWL_DEBUG_TX_REPLY(priv
,
1198 "FrameCnt = %d, idx=%d\n",
1199 tx_resp
->frame_count
, cmd_index
);
1202 /* check if BAR is needed */
1203 if (is_agg
&& !iwl_is_tx_success(status
))
1204 info
->flags
|= IEEE80211_TX_STAT_AMPDU_NO_BACK
;
1205 iwlagn_set_tx_status(priv
, IEEE80211_SKB_CB(skb
),
1208 iwlagn_non_agg_tx_status(priv
, ctx
, hdr
->addr1
);
1211 (info
->flags
& IEEE80211_TX_CTL_TX_OFFCHAN
);
1215 WARN_ON(!is_agg
&& freed
!= 1);
1218 * An offchannel frame can be send only on the AUX queue, where
1219 * there is no aggregation (and reordering) so it only is single
1220 * skb is expected to be processed.
1222 WARN_ON(is_offchannel_skb
&& freed
!= 1);
1225 iwl_check_abort_status(priv
, tx_resp
->frame_count
, status
);
1226 spin_unlock(&priv
->sta_lock
);
1228 while (!skb_queue_empty(&skbs
)) {
1229 skb
= __skb_dequeue(&skbs
);
1230 ieee80211_tx_status(priv
->hw
, skb
);
1233 if (is_offchannel_skb
)
1234 iwl_scan_offchannel_skb_status(priv
);
1240 * iwlagn_rx_reply_compressed_ba - Handler for REPLY_COMPRESSED_BA
1242 * Handles block-acknowledge notification from device, which reports success
1243 * of frames sent via aggregation.
1245 int iwlagn_rx_reply_compressed_ba(struct iwl_priv
*priv
,
1246 struct iwl_rx_cmd_buffer
*rxb
,
1247 struct iwl_device_cmd
*cmd
)
1249 struct iwl_rx_packet
*pkt
= rxb_addr(rxb
);
1250 struct iwl_compressed_ba_resp
*ba_resp
= (void *)pkt
->data
;
1251 struct iwl_ht_agg
*agg
;
1252 struct sk_buff_head reclaimed_skbs
;
1253 struct ieee80211_tx_info
*info
;
1254 struct ieee80211_hdr
*hdr
;
1255 struct sk_buff
*skb
;
1260 /* "flow" corresponds to Tx queue */
1261 u16 scd_flow
= le16_to_cpu(ba_resp
->scd_flow
);
1263 /* "ssn" is start of block-ack Tx window, corresponds to index
1264 * (in Tx queue's circular buffer) of first TFD/frame in window */
1265 u16 ba_resp_scd_ssn
= le16_to_cpu(ba_resp
->scd_ssn
);
1267 if (scd_flow
>= priv
->cfg
->base_params
->num_of_queues
) {
1269 "BUG_ON scd_flow is bigger than number of queues\n");
1273 sta_id
= ba_resp
->sta_id
;
1275 agg
= &priv
->tid_data
[sta_id
][tid
].agg
;
1277 spin_lock(&priv
->sta_lock
);
1279 if (unlikely(!agg
->wait_for_ba
)) {
1280 if (unlikely(ba_resp
->bitmap
))
1281 IWL_ERR(priv
, "Received BA when not expected\n");
1282 spin_unlock(&priv
->sta_lock
);
1286 if (unlikely(scd_flow
!= agg
->txq_id
)) {
1288 * FIXME: this is a uCode bug which need to be addressed,
1289 * log the information and return for now.
1290 * Since it is can possibly happen very often and in order
1291 * not to fill the syslog, don't use IWL_ERR or IWL_WARN
1293 IWL_DEBUG_TX_QUEUES(priv
,
1294 "Bad queue mapping txq_id=%d, agg_txq[sta:%d,tid:%d]=%d\n",
1295 scd_flow
, sta_id
, tid
, agg
->txq_id
);
1296 spin_unlock(&priv
->sta_lock
);
1300 __skb_queue_head_init(&reclaimed_skbs
);
1302 /* Release all TFDs before the SSN, i.e. all TFDs in front of
1303 * block-ack window (we assume that they've been successfully
1304 * transmitted ... if not, it's too late anyway). */
1305 iwl_trans_reclaim(priv
->trans
, scd_flow
, ba_resp_scd_ssn
,
1308 IWL_DEBUG_TX_REPLY(priv
, "REPLY_COMPRESSED_BA [%d] Received from %pM, "
1311 (u8
*) &ba_resp
->sta_addr_lo32
,
1313 IWL_DEBUG_TX_REPLY(priv
, "TID = %d, SeqCtl = %d, bitmap = 0x%llx, "
1314 "scd_flow = %d, scd_ssn = %d sent:%d, acked:%d\n",
1315 ba_resp
->tid
, le16_to_cpu(ba_resp
->seq_ctl
),
1316 (unsigned long long)le64_to_cpu(ba_resp
->bitmap
),
1317 scd_flow
, ba_resp_scd_ssn
, ba_resp
->txed
,
1318 ba_resp
->txed_2_done
);
1320 /* Mark that the expected block-ack response arrived */
1321 agg
->wait_for_ba
= false;
1323 /* Sanity check values reported by uCode */
1324 if (ba_resp
->txed_2_done
> ba_resp
->txed
) {
1325 IWL_DEBUG_TX_REPLY(priv
,
1326 "bogus sent(%d) and ack(%d) count\n",
1327 ba_resp
->txed
, ba_resp
->txed_2_done
);
1329 * set txed_2_done = txed,
1330 * so it won't impact rate scale
1332 ba_resp
->txed
= ba_resp
->txed_2_done
;
1335 priv
->tid_data
[sta_id
][tid
].next_reclaimed
= ba_resp_scd_ssn
;
1337 iwlagn_check_ratid_empty(priv
, sta_id
, tid
);
1340 skb_queue_walk(&reclaimed_skbs
, skb
) {
1341 hdr
= (struct ieee80211_hdr
*)skb
->data
;
1343 if (ieee80211_is_data_qos(hdr
->frame_control
))
1348 info
= IEEE80211_SKB_CB(skb
);
1349 iwl_trans_free_tx_cmd(priv
->trans
, info
->driver_data
[1]);
1352 /* this is the first skb we deliver in this batch */
1353 /* put the rate scaling data there */
1354 info
= IEEE80211_SKB_CB(skb
);
1355 memset(&info
->status
, 0, sizeof(info
->status
));
1356 info
->flags
|= IEEE80211_TX_STAT_ACK
;
1357 info
->flags
|= IEEE80211_TX_STAT_AMPDU
;
1358 info
->status
.ampdu_ack_len
= ba_resp
->txed_2_done
;
1359 info
->status
.ampdu_len
= ba_resp
->txed
;
1360 iwlagn_hwrate_to_tx_control(priv
, agg
->rate_n_flags
,
1365 spin_unlock(&priv
->sta_lock
);
1367 while (!skb_queue_empty(&reclaimed_skbs
)) {
1368 skb
= __skb_dequeue(&reclaimed_skbs
);
1369 ieee80211_tx_status(priv
->hw
, skb
);