2 * Marvell Wireless LAN device driver: WMM
4 * Copyright (C) 2011-2014, Marvell International Ltd.
6 * This software file (the "File") is distributed by Marvell International
7 * Ltd. under the terms of the GNU General Public License Version 2, June 1991
8 * (the "License"). You may use, redistribute and/or modify this File in
9 * accordance with the terms and conditions of the License, a copy of which
10 * is available by writing to the Free Software Foundation, Inc.,
11 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
12 * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
14 * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
16 * ARE EXPRESSLY DISCLAIMED. The License provides additional details about
17 * this warranty disclaimer.
29 /* Maximum value FW can accept for driver delay in packet transmission */
30 #define DRV_PKT_DELAY_TO_FW_MAX 512
33 #define WMM_QUEUED_PACKET_LOWER_LIMIT 180
35 #define WMM_QUEUED_PACKET_UPPER_LIMIT 200
37 /* Offset for TOS field in the IP header */
38 #define IPTOS_OFFSET 5
40 static bool disable_tx_amsdu
;
41 module_param(disable_tx_amsdu
, bool, 0644);
43 /* WMM information IE */
44 static const u8 wmm_info_ie
[] = { WLAN_EID_VENDOR_SPECIFIC
, 0x07,
45 0x00, 0x50, 0xf2, 0x02,
49 static const u8 wmm_aci_to_qidx_map
[] = { WMM_AC_BE
,
55 static u8 tos_to_tid
[] = {
56 /* TID DSCP_P2 DSCP_P1 DSCP_P0 WMM_AC */
57 0x01, /* 0 1 0 AC_BK */
58 0x02, /* 0 0 0 AC_BK */
59 0x00, /* 0 0 1 AC_BE */
60 0x03, /* 0 1 1 AC_BE */
61 0x04, /* 1 0 0 AC_VI */
62 0x05, /* 1 0 1 AC_VI */
63 0x06, /* 1 1 0 AC_VO */
64 0x07 /* 1 1 1 AC_VO */
67 static u8 ac_to_tid
[4][2] = { {1, 2}, {0, 3}, {4, 5}, {6, 7} };
70 * This function debug prints the priority parameters for a WMM AC.
73 mwifiex_wmm_ac_debug_print(const struct ieee_types_wmm_ac_parameters
*ac_param
)
75 const char *ac_str
[] = { "BK", "BE", "VI", "VO" };
77 pr_debug("info: WMM AC_%s: ACI=%d, ACM=%d, Aifsn=%d, "
78 "EcwMin=%d, EcwMax=%d, TxopLimit=%d\n",
79 ac_str
[wmm_aci_to_qidx_map
[(ac_param
->aci_aifsn_bitmap
80 & MWIFIEX_ACI
) >> 5]],
81 (ac_param
->aci_aifsn_bitmap
& MWIFIEX_ACI
) >> 5,
82 (ac_param
->aci_aifsn_bitmap
& MWIFIEX_ACM
) >> 4,
83 ac_param
->aci_aifsn_bitmap
& MWIFIEX_AIFSN
,
84 ac_param
->ecw_bitmap
& MWIFIEX_ECW_MIN
,
85 (ac_param
->ecw_bitmap
& MWIFIEX_ECW_MAX
) >> 4,
86 le16_to_cpu(ac_param
->tx_op_limit
));
90 * This function allocates a route address list.
92 * The function also initializes the list with the provided RA.
94 static struct mwifiex_ra_list_tbl
*
95 mwifiex_wmm_allocate_ralist_node(struct mwifiex_adapter
*adapter
, const u8
*ra
)
97 struct mwifiex_ra_list_tbl
*ra_list
;
99 ra_list
= kzalloc(sizeof(struct mwifiex_ra_list_tbl
), GFP_ATOMIC
);
103 INIT_LIST_HEAD(&ra_list
->list
);
104 skb_queue_head_init(&ra_list
->skb_head
);
106 memcpy(ra_list
->ra
, ra
, ETH_ALEN
);
108 ra_list
->total_pkt_count
= 0;
110 mwifiex_dbg(adapter
, INFO
, "info: allocated ra_list %p\n", ra_list
);
115 /* This function returns random no between 16 and 32 to be used as threshold
116 * for no of packets after which BA setup is initiated.
118 static u8
mwifiex_get_random_ba_threshold(void)
121 struct timeval ba_tstamp
;
124 /* setup ba_packet_threshold here random number between
125 * [BA_SETUP_PACKET_OFFSET,
126 * BA_SETUP_PACKET_OFFSET+BA_SETUP_MAX_PACKET_THRESHOLD-1]
129 do_gettimeofday(&ba_tstamp
);
130 sec
= (ba_tstamp
.tv_sec
& 0xFFFF) + (ba_tstamp
.tv_sec
>> 16);
131 usec
= (ba_tstamp
.tv_usec
& 0xFFFF) + (ba_tstamp
.tv_usec
>> 16);
132 ba_threshold
= (((sec
<< 16) + usec
) % BA_SETUP_MAX_PACKET_THRESHOLD
)
133 + BA_SETUP_PACKET_OFFSET
;
139 * This function allocates and adds a RA list for all TIDs
142 void mwifiex_ralist_add(struct mwifiex_private
*priv
, const u8
*ra
)
145 struct mwifiex_ra_list_tbl
*ra_list
;
146 struct mwifiex_adapter
*adapter
= priv
->adapter
;
147 struct mwifiex_sta_node
*node
;
151 for (i
= 0; i
< MAX_NUM_TID
; ++i
) {
152 ra_list
= mwifiex_wmm_allocate_ralist_node(adapter
, ra
);
153 mwifiex_dbg(adapter
, INFO
,
154 "info: created ra_list %p\n", ra_list
);
159 ra_list
->is_11n_enabled
= 0;
160 ra_list
->tdls_link
= false;
161 ra_list
->ba_status
= BA_SETUP_NONE
;
162 ra_list
->amsdu_in_ampdu
= false;
163 ra_list
->tx_paused
= false;
164 if (!mwifiex_queuing_ra_based(priv
)) {
165 if (mwifiex_is_tdls_link_setup
166 (mwifiex_get_tdls_link_status(priv
, ra
))) {
167 ra_list
->tdls_link
= true;
168 ra_list
->is_11n_enabled
=
169 mwifiex_tdls_peer_11n_enabled(priv
, ra
);
171 ra_list
->is_11n_enabled
= IS_11N_ENABLED(priv
);
174 spin_lock_irqsave(&priv
->sta_list_spinlock
, flags
);
175 node
= mwifiex_get_sta_entry(priv
, ra
);
176 ra_list
->is_11n_enabled
=
177 mwifiex_is_sta_11n_enabled(priv
, node
);
178 if (ra_list
->is_11n_enabled
)
179 ra_list
->max_amsdu
= node
->max_amsdu
;
180 spin_unlock_irqrestore(&priv
->sta_list_spinlock
, flags
);
183 mwifiex_dbg(adapter
, DATA
, "data: ralist %p: is_11n_enabled=%d\n",
184 ra_list
, ra_list
->is_11n_enabled
);
186 if (ra_list
->is_11n_enabled
) {
187 ra_list
->ba_pkt_count
= 0;
188 ra_list
->ba_packet_thr
=
189 mwifiex_get_random_ba_threshold();
191 list_add_tail(&ra_list
->list
,
192 &priv
->wmm
.tid_tbl_ptr
[i
].ra_list
);
197 * This function sets the WMM queue priorities to their default values.
199 static void mwifiex_wmm_default_queue_priorities(struct mwifiex_private
*priv
)
201 /* Default queue priorities: VO->VI->BE->BK */
202 priv
->wmm
.queue_priority
[0] = WMM_AC_VO
;
203 priv
->wmm
.queue_priority
[1] = WMM_AC_VI
;
204 priv
->wmm
.queue_priority
[2] = WMM_AC_BE
;
205 priv
->wmm
.queue_priority
[3] = WMM_AC_BK
;
209 * This function map ACs to TIDs.
212 mwifiex_wmm_queue_priorities_tid(struct mwifiex_private
*priv
)
214 struct mwifiex_wmm_desc
*wmm
= &priv
->wmm
;
215 u8
*queue_priority
= wmm
->queue_priority
;
218 for (i
= 0; i
< 4; ++i
) {
219 tos_to_tid
[7 - (i
* 2)] = ac_to_tid
[queue_priority
[i
]][1];
220 tos_to_tid
[6 - (i
* 2)] = ac_to_tid
[queue_priority
[i
]][0];
223 for (i
= 0; i
< MAX_NUM_TID
; ++i
)
224 priv
->tos_to_tid_inv
[tos_to_tid
[i
]] = (u8
)i
;
226 atomic_set(&wmm
->highest_queued_prio
, HIGH_PRIO_TID
);
230 * This function initializes WMM priority queues.
233 mwifiex_wmm_setup_queue_priorities(struct mwifiex_private
*priv
,
234 struct ieee_types_wmm_parameter
*wmm_ie
)
236 u16 cw_min
, avg_back_off
, tmp
[4];
240 if (!wmm_ie
|| !priv
->wmm_enabled
) {
241 /* WMM is not enabled, just set the defaults and return */
242 mwifiex_wmm_default_queue_priorities(priv
);
246 mwifiex_dbg(priv
->adapter
, INFO
,
247 "info: WMM Parameter IE: version=%d,\t"
248 "qos_info Parameter Set Count=%d, Reserved=%#x\n",
249 wmm_ie
->vend_hdr
.version
, wmm_ie
->qos_info_bitmap
&
250 IEEE80211_WMM_IE_AP_QOSINFO_PARAM_SET_CNT_MASK
,
253 for (num_ac
= 0; num_ac
< ARRAY_SIZE(wmm_ie
->ac_params
); num_ac
++) {
254 u8 ecw
= wmm_ie
->ac_params
[num_ac
].ecw_bitmap
;
255 u8 aci_aifsn
= wmm_ie
->ac_params
[num_ac
].aci_aifsn_bitmap
;
256 cw_min
= (1 << (ecw
& MWIFIEX_ECW_MIN
)) - 1;
257 avg_back_off
= (cw_min
>> 1) + (aci_aifsn
& MWIFIEX_AIFSN
);
259 ac_idx
= wmm_aci_to_qidx_map
[(aci_aifsn
& MWIFIEX_ACI
) >> 5];
260 priv
->wmm
.queue_priority
[ac_idx
] = ac_idx
;
261 tmp
[ac_idx
] = avg_back_off
;
263 mwifiex_dbg(priv
->adapter
, INFO
,
264 "info: WMM: CWmax=%d CWmin=%d Avg Back-off=%d\n",
265 (1 << ((ecw
& MWIFIEX_ECW_MAX
) >> 4)) - 1,
266 cw_min
, avg_back_off
);
267 mwifiex_wmm_ac_debug_print(&wmm_ie
->ac_params
[num_ac
]);
271 for (i
= 0; i
< num_ac
; i
++) {
272 for (j
= 1; j
< num_ac
- i
; j
++) {
273 if (tmp
[j
- 1] > tmp
[j
]) {
274 swap(tmp
[j
- 1], tmp
[j
]);
275 swap(priv
->wmm
.queue_priority
[j
- 1],
276 priv
->wmm
.queue_priority
[j
]);
277 } else if (tmp
[j
- 1] == tmp
[j
]) {
278 if (priv
->wmm
.queue_priority
[j
- 1]
279 < priv
->wmm
.queue_priority
[j
])
280 swap(priv
->wmm
.queue_priority
[j
- 1],
281 priv
->wmm
.queue_priority
[j
]);
286 mwifiex_wmm_queue_priorities_tid(priv
);
290 * This function evaluates whether or not an AC is to be downgraded.
292 * In case the AC is not enabled, the highest AC is returned that is
293 * enabled and does not require admission control.
295 static enum mwifiex_wmm_ac_e
296 mwifiex_wmm_eval_downgrade_ac(struct mwifiex_private
*priv
,
297 enum mwifiex_wmm_ac_e eval_ac
)
300 enum mwifiex_wmm_ac_e ret_ac
;
301 struct mwifiex_wmm_ac_status
*ac_status
;
303 ac_status
= &priv
->wmm
.ac_status
[eval_ac
];
305 if (!ac_status
->disabled
)
306 /* Okay to use this AC, its enabled */
309 /* Setup a default return value of the lowest priority */
313 * Find the highest AC that is enabled and does not require
314 * admission control. The spec disallows downgrading to an AC,
315 * which is enabled due to a completed admission control.
316 * Unadmitted traffic is not to be sent on an AC with admitted
319 for (down_ac
= WMM_AC_BK
; down_ac
< eval_ac
; down_ac
++) {
320 ac_status
= &priv
->wmm
.ac_status
[down_ac
];
322 if (!ac_status
->disabled
&& !ac_status
->flow_required
)
323 /* AC is enabled and does not require admission
325 ret_ac
= (enum mwifiex_wmm_ac_e
) down_ac
;
332 * This function downgrades WMM priority queue.
335 mwifiex_wmm_setup_ac_downgrade(struct mwifiex_private
*priv
)
339 mwifiex_dbg(priv
->adapter
, INFO
, "info: WMM: AC Priorities:\t"
340 "BK(0), BE(1), VI(2), VO(3)\n");
342 if (!priv
->wmm_enabled
) {
343 /* WMM is not enabled, default priorities */
344 for (ac_val
= WMM_AC_BK
; ac_val
<= WMM_AC_VO
; ac_val
++)
345 priv
->wmm
.ac_down_graded_vals
[ac_val
] =
346 (enum mwifiex_wmm_ac_e
) ac_val
;
348 for (ac_val
= WMM_AC_BK
; ac_val
<= WMM_AC_VO
; ac_val
++) {
349 priv
->wmm
.ac_down_graded_vals
[ac_val
]
350 = mwifiex_wmm_eval_downgrade_ac(priv
,
351 (enum mwifiex_wmm_ac_e
) ac_val
);
352 mwifiex_dbg(priv
->adapter
, INFO
,
353 "info: WMM: AC PRIO %d maps to %d\n",
355 priv
->wmm
.ac_down_graded_vals
[ac_val
]);
361 * This function converts the IP TOS field to an WMM AC
364 static enum mwifiex_wmm_ac_e
365 mwifiex_wmm_convert_tos_to_ac(struct mwifiex_adapter
*adapter
, u32 tos
)
367 /* Map of TOS UP values to WMM AC */
368 const enum mwifiex_wmm_ac_e tos_to_ac
[] = { WMM_AC_BE
,
378 if (tos
>= ARRAY_SIZE(tos_to_ac
))
381 return tos_to_ac
[tos
];
385 * This function evaluates a given TID and downgrades it to a lower
386 * TID if the WMM Parameter IE received from the AP indicates that the
387 * AP is disabled (due to call admission control (ACM bit). Mapping
388 * of TID to AC is taken care of internally.
390 u8
mwifiex_wmm_downgrade_tid(struct mwifiex_private
*priv
, u32 tid
)
392 enum mwifiex_wmm_ac_e ac
, ac_down
;
395 ac
= mwifiex_wmm_convert_tos_to_ac(priv
->adapter
, tid
);
396 ac_down
= priv
->wmm
.ac_down_graded_vals
[ac
];
398 /* Send the index to tid array, picking from the array will be
399 * taken care by dequeuing function
401 new_tid
= ac_to_tid
[ac_down
][tid
% 2];
407 * This function initializes the WMM state information and the
408 * WMM data path queues.
411 mwifiex_wmm_init(struct mwifiex_adapter
*adapter
)
414 struct mwifiex_private
*priv
;
416 for (j
= 0; j
< adapter
->priv_num
; ++j
) {
417 priv
= adapter
->priv
[j
];
421 for (i
= 0; i
< MAX_NUM_TID
; ++i
) {
422 if (!disable_tx_amsdu
&&
423 adapter
->tx_buf_size
> MWIFIEX_TX_DATA_BUF_SIZE_2K
)
424 priv
->aggr_prio_tbl
[i
].amsdu
=
425 priv
->tos_to_tid_inv
[i
];
427 priv
->aggr_prio_tbl
[i
].amsdu
=
428 BA_STREAM_NOT_ALLOWED
;
429 priv
->aggr_prio_tbl
[i
].ampdu_ap
=
430 priv
->tos_to_tid_inv
[i
];
431 priv
->aggr_prio_tbl
[i
].ampdu_user
=
432 priv
->tos_to_tid_inv
[i
];
435 priv
->aggr_prio_tbl
[6].amsdu
436 = priv
->aggr_prio_tbl
[6].ampdu_ap
437 = priv
->aggr_prio_tbl
[6].ampdu_user
438 = BA_STREAM_NOT_ALLOWED
;
440 priv
->aggr_prio_tbl
[7].amsdu
= priv
->aggr_prio_tbl
[7].ampdu_ap
441 = priv
->aggr_prio_tbl
[7].ampdu_user
442 = BA_STREAM_NOT_ALLOWED
;
444 mwifiex_set_ba_params(priv
);
445 mwifiex_reset_11n_rx_seq_num(priv
);
447 atomic_set(&priv
->wmm
.tx_pkts_queued
, 0);
448 atomic_set(&priv
->wmm
.highest_queued_prio
, HIGH_PRIO_TID
);
452 int mwifiex_bypass_txlist_empty(struct mwifiex_adapter
*adapter
)
454 return atomic_read(&adapter
->bypass_tx_pending
) ? false : true;
458 * This function checks if WMM Tx queue is empty.
461 mwifiex_wmm_lists_empty(struct mwifiex_adapter
*adapter
)
464 struct mwifiex_private
*priv
;
466 for (i
= 0; i
< adapter
->priv_num
; ++i
) {
467 priv
= adapter
->priv
[i
];
468 if (priv
&& atomic_read(&priv
->wmm
.tx_pkts_queued
))
476 * This function deletes all packets in an RA list node.
478 * The packet sent completion callback handler are called with
479 * status failure, after they are dequeued to ensure proper
480 * cleanup. The RA list node itself is freed at the end.
483 mwifiex_wmm_del_pkts_in_ralist_node(struct mwifiex_private
*priv
,
484 struct mwifiex_ra_list_tbl
*ra_list
)
486 struct mwifiex_adapter
*adapter
= priv
->adapter
;
487 struct sk_buff
*skb
, *tmp
;
489 skb_queue_walk_safe(&ra_list
->skb_head
, skb
, tmp
)
490 mwifiex_write_data_complete(adapter
, skb
, 0, -1);
494 * This function deletes all packets in an RA list.
496 * Each nodes in the RA list are freed individually first, and then
497 * the RA list itself is freed.
500 mwifiex_wmm_del_pkts_in_ralist(struct mwifiex_private
*priv
,
501 struct list_head
*ra_list_head
)
503 struct mwifiex_ra_list_tbl
*ra_list
;
505 list_for_each_entry(ra_list
, ra_list_head
, list
)
506 mwifiex_wmm_del_pkts_in_ralist_node(priv
, ra_list
);
510 * This function deletes all packets in all RA lists.
512 static void mwifiex_wmm_cleanup_queues(struct mwifiex_private
*priv
)
516 for (i
= 0; i
< MAX_NUM_TID
; i
++)
517 mwifiex_wmm_del_pkts_in_ralist(priv
, &priv
->wmm
.tid_tbl_ptr
[i
].
520 atomic_set(&priv
->wmm
.tx_pkts_queued
, 0);
521 atomic_set(&priv
->wmm
.highest_queued_prio
, HIGH_PRIO_TID
);
525 * This function deletes all route addresses from all RA lists.
527 static void mwifiex_wmm_delete_all_ralist(struct mwifiex_private
*priv
)
529 struct mwifiex_ra_list_tbl
*ra_list
, *tmp_node
;
532 for (i
= 0; i
< MAX_NUM_TID
; ++i
) {
533 mwifiex_dbg(priv
->adapter
, INFO
,
534 "info: ra_list: freeing buf for tid %d\n", i
);
535 list_for_each_entry_safe(ra_list
, tmp_node
,
536 &priv
->wmm
.tid_tbl_ptr
[i
].ra_list
,
538 list_del(&ra_list
->list
);
542 INIT_LIST_HEAD(&priv
->wmm
.tid_tbl_ptr
[i
].ra_list
);
546 static int mwifiex_free_ack_frame(int id
, void *p
, void *data
)
548 pr_warn("Have pending ack frames!\n");
554 * This function cleans up the Tx and Rx queues.
557 * - All packets in RA lists
558 * - All entries in Rx reorder table
559 * - All entries in Tx BA stream table
560 * - MPA buffer (if required)
564 mwifiex_clean_txrx(struct mwifiex_private
*priv
)
567 struct sk_buff
*skb
, *tmp
;
569 mwifiex_11n_cleanup_reorder_tbl(priv
);
570 spin_lock_irqsave(&priv
->wmm
.ra_list_spinlock
, flags
);
572 mwifiex_wmm_cleanup_queues(priv
);
573 mwifiex_11n_delete_all_tx_ba_stream_tbl(priv
);
575 if (priv
->adapter
->if_ops
.cleanup_mpa_buf
)
576 priv
->adapter
->if_ops
.cleanup_mpa_buf(priv
->adapter
);
578 mwifiex_wmm_delete_all_ralist(priv
);
579 memcpy(tos_to_tid
, ac_to_tid
, sizeof(tos_to_tid
));
581 if (priv
->adapter
->if_ops
.clean_pcie_ring
&&
582 !priv
->adapter
->surprise_removed
)
583 priv
->adapter
->if_ops
.clean_pcie_ring(priv
->adapter
);
584 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
, flags
);
586 skb_queue_walk_safe(&priv
->tdls_txq
, skb
, tmp
)
587 mwifiex_write_data_complete(priv
->adapter
, skb
, 0, -1);
589 skb_queue_walk_safe(&priv
->bypass_txq
, skb
, tmp
)
590 mwifiex_write_data_complete(priv
->adapter
, skb
, 0, -1);
591 atomic_set(&priv
->adapter
->bypass_tx_pending
, 0);
593 idr_for_each(&priv
->ack_status_frames
, mwifiex_free_ack_frame
, NULL
);
594 idr_destroy(&priv
->ack_status_frames
);
598 * This function retrieves a particular RA list node, matching with the
599 * given TID and RA address.
601 struct mwifiex_ra_list_tbl
*
602 mwifiex_wmm_get_ralist_node(struct mwifiex_private
*priv
, u8 tid
,
605 struct mwifiex_ra_list_tbl
*ra_list
;
607 list_for_each_entry(ra_list
, &priv
->wmm
.tid_tbl_ptr
[tid
].ra_list
,
609 if (!memcmp(ra_list
->ra
, ra_addr
, ETH_ALEN
))
616 void mwifiex_update_ralist_tx_pause(struct mwifiex_private
*priv
, u8
*mac
,
619 struct mwifiex_ra_list_tbl
*ra_list
;
620 u32 pkt_cnt
= 0, tx_pkts_queued
;
624 spin_lock_irqsave(&priv
->wmm
.ra_list_spinlock
, flags
);
626 for (i
= 0; i
< MAX_NUM_TID
; ++i
) {
627 ra_list
= mwifiex_wmm_get_ralist_node(priv
, i
, mac
);
628 if (ra_list
&& ra_list
->tx_paused
!= tx_pause
) {
629 pkt_cnt
+= ra_list
->total_pkt_count
;
630 ra_list
->tx_paused
= tx_pause
;
632 priv
->wmm
.pkts_paused
[i
] +=
633 ra_list
->total_pkt_count
;
635 priv
->wmm
.pkts_paused
[i
] -=
636 ra_list
->total_pkt_count
;
641 tx_pkts_queued
= atomic_read(&priv
->wmm
.tx_pkts_queued
);
643 tx_pkts_queued
-= pkt_cnt
;
645 tx_pkts_queued
+= pkt_cnt
;
647 atomic_set(&priv
->wmm
.tx_pkts_queued
, tx_pkts_queued
);
648 atomic_set(&priv
->wmm
.highest_queued_prio
, HIGH_PRIO_TID
);
650 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
, flags
);
653 /* This function update non-tdls peer ralist tx_pause while
654 * tdls channel swithing
656 void mwifiex_update_ralist_tx_pause_in_tdls_cs(struct mwifiex_private
*priv
,
657 u8
*mac
, u8 tx_pause
)
659 struct mwifiex_ra_list_tbl
*ra_list
;
660 u32 pkt_cnt
= 0, tx_pkts_queued
;
664 spin_lock_irqsave(&priv
->wmm
.ra_list_spinlock
, flags
);
666 for (i
= 0; i
< MAX_NUM_TID
; ++i
) {
667 list_for_each_entry(ra_list
, &priv
->wmm
.tid_tbl_ptr
[i
].ra_list
,
669 if (!memcmp(ra_list
->ra
, mac
, ETH_ALEN
))
672 if (ra_list
&& ra_list
->tx_paused
!= tx_pause
) {
673 pkt_cnt
+= ra_list
->total_pkt_count
;
674 ra_list
->tx_paused
= tx_pause
;
676 priv
->wmm
.pkts_paused
[i
] +=
677 ra_list
->total_pkt_count
;
679 priv
->wmm
.pkts_paused
[i
] -=
680 ra_list
->total_pkt_count
;
686 tx_pkts_queued
= atomic_read(&priv
->wmm
.tx_pkts_queued
);
688 tx_pkts_queued
-= pkt_cnt
;
690 tx_pkts_queued
+= pkt_cnt
;
692 atomic_set(&priv
->wmm
.tx_pkts_queued
, tx_pkts_queued
);
693 atomic_set(&priv
->wmm
.highest_queued_prio
, HIGH_PRIO_TID
);
695 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
, flags
);
699 * This function retrieves an RA list node for a given TID and
702 * If no such node is found, a new node is added first and then
705 struct mwifiex_ra_list_tbl
*
706 mwifiex_wmm_get_queue_raptr(struct mwifiex_private
*priv
, u8 tid
,
709 struct mwifiex_ra_list_tbl
*ra_list
;
711 ra_list
= mwifiex_wmm_get_ralist_node(priv
, tid
, ra_addr
);
714 mwifiex_ralist_add(priv
, ra_addr
);
716 return mwifiex_wmm_get_ralist_node(priv
, tid
, ra_addr
);
720 * This function deletes RA list nodes for given mac for all TIDs.
721 * Function also decrements TX pending count accordingly.
724 mwifiex_wmm_del_peer_ra_list(struct mwifiex_private
*priv
, const u8
*ra_addr
)
726 struct mwifiex_ra_list_tbl
*ra_list
;
730 spin_lock_irqsave(&priv
->wmm
.ra_list_spinlock
, flags
);
732 for (i
= 0; i
< MAX_NUM_TID
; ++i
) {
733 ra_list
= mwifiex_wmm_get_ralist_node(priv
, i
, ra_addr
);
737 mwifiex_wmm_del_pkts_in_ralist_node(priv
, ra_list
);
738 atomic_sub(ra_list
->total_pkt_count
, &priv
->wmm
.tx_pkts_queued
);
739 list_del(&ra_list
->list
);
742 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
, flags
);
746 * This function checks if a particular RA list node exists in a given TID
750 mwifiex_is_ralist_valid(struct mwifiex_private
*priv
,
751 struct mwifiex_ra_list_tbl
*ra_list
, int ptr_index
)
753 struct mwifiex_ra_list_tbl
*rlist
;
755 list_for_each_entry(rlist
, &priv
->wmm
.tid_tbl_ptr
[ptr_index
].ra_list
,
757 if (rlist
== ra_list
)
765 * This function adds a packet to bypass TX queue.
766 * This is special TX queue for packets which can be sent even when port_open
770 mwifiex_wmm_add_buf_bypass_txqueue(struct mwifiex_private
*priv
,
773 skb_queue_tail(&priv
->bypass_txq
, skb
);
777 * This function adds a packet to WMM queue.
779 * In disconnected state the packet is immediately dropped and the
780 * packet send completion callback is called with status failure.
782 * Otherwise, the correct RA list node is located and the packet
783 * is queued at the list tail.
786 mwifiex_wmm_add_buf_txqueue(struct mwifiex_private
*priv
,
789 struct mwifiex_adapter
*adapter
= priv
->adapter
;
791 struct mwifiex_ra_list_tbl
*ra_list
;
792 u8 ra
[ETH_ALEN
], tid_down
;
794 struct list_head list_head
;
795 int tdls_status
= TDLS_NOT_SETUP
;
796 struct ethhdr
*eth_hdr
= (struct ethhdr
*)skb
->data
;
797 struct mwifiex_txinfo
*tx_info
= MWIFIEX_SKB_TXCB(skb
);
799 memcpy(ra
, eth_hdr
->h_dest
, ETH_ALEN
);
801 if (GET_BSS_ROLE(priv
) == MWIFIEX_BSS_ROLE_STA
&&
802 ISSUPP_TDLS_ENABLED(adapter
->fw_cap_info
)) {
803 if (ntohs(eth_hdr
->h_proto
) == ETH_P_TDLS
)
804 mwifiex_dbg(adapter
, DATA
,
805 "TDLS setup packet for %pM.\t"
806 "Don't block\n", ra
);
807 else if (memcmp(priv
->cfg_bssid
, ra
, ETH_ALEN
))
808 tdls_status
= mwifiex_get_tdls_link_status(priv
, ra
);
811 if (!priv
->media_connected
&& !mwifiex_is_skb_mgmt_frame(skb
)) {
812 mwifiex_dbg(adapter
, DATA
, "data: drop packet in disconnect\n");
813 mwifiex_write_data_complete(adapter
, skb
, 0, -1);
819 spin_lock_irqsave(&priv
->wmm
.ra_list_spinlock
, flags
);
821 tid_down
= mwifiex_wmm_downgrade_tid(priv
, tid
);
823 /* In case of infra as we have already created the list during
824 association we just don't have to call get_queue_raptr, we will
825 have only 1 raptr for a tid in case of infra */
826 if (!mwifiex_queuing_ra_based(priv
) &&
827 !mwifiex_is_skb_mgmt_frame(skb
)) {
828 switch (tdls_status
) {
829 case TDLS_SETUP_COMPLETE
:
830 case TDLS_CHAN_SWITCHING
:
831 case TDLS_IN_BASE_CHAN
:
832 case TDLS_IN_OFF_CHAN
:
833 ra_list
= mwifiex_wmm_get_queue_raptr(priv
, tid_down
,
835 tx_info
->flags
|= MWIFIEX_BUF_FLAG_TDLS_PKT
;
837 case TDLS_SETUP_INPROGRESS
:
838 skb_queue_tail(&priv
->tdls_txq
, skb
);
839 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
,
843 list_head
= priv
->wmm
.tid_tbl_ptr
[tid_down
].ra_list
;
844 if (!list_empty(&list_head
))
845 ra_list
= list_first_entry(
846 &list_head
, struct mwifiex_ra_list_tbl
,
853 memcpy(ra
, skb
->data
, ETH_ALEN
);
854 if (ra
[0] & 0x01 || mwifiex_is_skb_mgmt_frame(skb
))
855 eth_broadcast_addr(ra
);
856 ra_list
= mwifiex_wmm_get_queue_raptr(priv
, tid_down
, ra
);
860 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
, flags
);
861 mwifiex_write_data_complete(adapter
, skb
, 0, -1);
865 skb_queue_tail(&ra_list
->skb_head
, skb
);
867 ra_list
->ba_pkt_count
++;
868 ra_list
->total_pkt_count
++;
870 if (atomic_read(&priv
->wmm
.highest_queued_prio
) <
871 priv
->tos_to_tid_inv
[tid_down
])
872 atomic_set(&priv
->wmm
.highest_queued_prio
,
873 priv
->tos_to_tid_inv
[tid_down
]);
875 if (ra_list
->tx_paused
)
876 priv
->wmm
.pkts_paused
[tid_down
]++;
878 atomic_inc(&priv
->wmm
.tx_pkts_queued
);
880 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
, flags
);
884 * This function processes the get WMM status command response from firmware.
886 * The response may contain multiple TLVs -
887 * - AC Queue status TLVs
888 * - Current WMM Parameter IE TLV
889 * - Admission Control action frame TLVs
891 * This function parses the TLVs and then calls further specific functions
892 * to process any changes in the queue prioritize or state.
894 int mwifiex_ret_wmm_get_status(struct mwifiex_private
*priv
,
895 const struct host_cmd_ds_command
*resp
)
897 u8
*curr
= (u8
*) &resp
->params
.get_wmm_status
;
898 uint16_t resp_len
= le16_to_cpu(resp
->size
), tlv_len
;
899 int mask
= IEEE80211_WMM_IE_AP_QOSINFO_PARAM_SET_CNT_MASK
;
902 struct mwifiex_ie_types_data
*tlv_hdr
;
903 struct mwifiex_ie_types_wmm_queue_status
*tlv_wmm_qstatus
;
904 struct ieee_types_wmm_parameter
*wmm_param_ie
= NULL
;
905 struct mwifiex_wmm_ac_status
*ac_status
;
907 mwifiex_dbg(priv
->adapter
, INFO
,
908 "info: WMM: WMM_GET_STATUS cmdresp received: %d\n",
911 while ((resp_len
>= sizeof(tlv_hdr
->header
)) && valid
) {
912 tlv_hdr
= (struct mwifiex_ie_types_data
*) curr
;
913 tlv_len
= le16_to_cpu(tlv_hdr
->header
.len
);
915 if (resp_len
< tlv_len
+ sizeof(tlv_hdr
->header
))
918 switch (le16_to_cpu(tlv_hdr
->header
.type
)) {
919 case TLV_TYPE_WMMQSTATUS
:
921 (struct mwifiex_ie_types_wmm_queue_status
*)
923 mwifiex_dbg(priv
->adapter
, CMD
,
924 "info: CMD_RESP: WMM_GET_STATUS:\t"
925 "QSTATUS TLV: %d, %d, %d\n",
926 tlv_wmm_qstatus
->queue_index
,
927 tlv_wmm_qstatus
->flow_required
,
928 tlv_wmm_qstatus
->disabled
);
930 ac_status
= &priv
->wmm
.ac_status
[tlv_wmm_qstatus
->
932 ac_status
->disabled
= tlv_wmm_qstatus
->disabled
;
933 ac_status
->flow_required
=
934 tlv_wmm_qstatus
->flow_required
;
935 ac_status
->flow_created
= tlv_wmm_qstatus
->flow_created
;
938 case WLAN_EID_VENDOR_SPECIFIC
:
940 * Point the regular IEEE IE 2 bytes into the Marvell IE
941 * and setup the IEEE IE type and length byte fields
945 (struct ieee_types_wmm_parameter
*) (curr
+
947 wmm_param_ie
->vend_hdr
.len
= (u8
) tlv_len
;
948 wmm_param_ie
->vend_hdr
.element_id
=
949 WLAN_EID_VENDOR_SPECIFIC
;
951 mwifiex_dbg(priv
->adapter
, CMD
,
952 "info: CMD_RESP: WMM_GET_STATUS:\t"
953 "WMM Parameter Set Count: %d\n",
954 wmm_param_ie
->qos_info_bitmap
& mask
);
956 memcpy((u8
*) &priv
->curr_bss_params
.bss_descriptor
.
957 wmm_ie
, wmm_param_ie
,
958 wmm_param_ie
->vend_hdr
.len
+ 2);
967 curr
+= (tlv_len
+ sizeof(tlv_hdr
->header
));
968 resp_len
-= (tlv_len
+ sizeof(tlv_hdr
->header
));
971 mwifiex_wmm_setup_queue_priorities(priv
, wmm_param_ie
);
972 mwifiex_wmm_setup_ac_downgrade(priv
);
978 * Callback handler from the command module to allow insertion of a WMM TLV.
980 * If the BSS we are associating to supports WMM, this function adds the
981 * required WMM Information IE to the association request command buffer in
982 * the form of a Marvell extended IEEE IE.
985 mwifiex_wmm_process_association_req(struct mwifiex_private
*priv
,
987 struct ieee_types_wmm_parameter
*wmm_ie
,
988 struct ieee80211_ht_cap
*ht_cap
)
990 struct mwifiex_ie_types_wmm_param_set
*wmm_tlv
;
1002 mwifiex_dbg(priv
->adapter
, INFO
,
1003 "info: WMM: process assoc req: bss->wmm_ie=%#x\n",
1004 wmm_ie
->vend_hdr
.element_id
);
1006 if ((priv
->wmm_required
||
1007 (ht_cap
&& (priv
->adapter
->config_bands
& BAND_GN
||
1008 priv
->adapter
->config_bands
& BAND_AN
))) &&
1009 wmm_ie
->vend_hdr
.element_id
== WLAN_EID_VENDOR_SPECIFIC
) {
1010 wmm_tlv
= (struct mwifiex_ie_types_wmm_param_set
*) *assoc_buf
;
1011 wmm_tlv
->header
.type
= cpu_to_le16((u16
) wmm_info_ie
[0]);
1012 wmm_tlv
->header
.len
= cpu_to_le16((u16
) wmm_info_ie
[1]);
1013 memcpy(wmm_tlv
->wmm_ie
, &wmm_info_ie
[2],
1014 le16_to_cpu(wmm_tlv
->header
.len
));
1015 if (wmm_ie
->qos_info_bitmap
& IEEE80211_WMM_IE_AP_QOSINFO_UAPSD
)
1016 memcpy((u8
*) (wmm_tlv
->wmm_ie
1017 + le16_to_cpu(wmm_tlv
->header
.len
)
1018 - sizeof(priv
->wmm_qosinfo
)),
1019 &priv
->wmm_qosinfo
, sizeof(priv
->wmm_qosinfo
));
1021 ret_len
= sizeof(wmm_tlv
->header
)
1022 + le16_to_cpu(wmm_tlv
->header
.len
);
1024 *assoc_buf
+= ret_len
;
1031 * This function computes the time delay in the driver queues for a
1034 * When the packet is received at the OS/Driver interface, the current
1035 * time is set in the packet structure. The difference between the present
1036 * time and that received time is computed in this function and limited
1037 * based on pre-compiled limits in the driver.
1040 mwifiex_wmm_compute_drv_pkt_delay(struct mwifiex_private
*priv
,
1041 const struct sk_buff
*skb
)
1043 u32 queue_delay
= ktime_to_ms(net_timedelta(skb
->tstamp
));
1047 * Queue delay is passed as a uint8 in units of 2ms (ms shifted
1048 * by 1). Min value (other than 0) is therefore 2ms, max is 510ms.
1050 * Pass max value if queue_delay is beyond the uint8 range
1052 ret_val
= (u8
) (min(queue_delay
, priv
->wmm
.drv_pkt_delay_max
) >> 1);
1054 mwifiex_dbg(priv
->adapter
, DATA
, "data: WMM: Pkt Delay: %d ms,\t"
1055 "%d ms sent to FW\n", queue_delay
, ret_val
);
1061 * This function retrieves the highest priority RA list table pointer.
1063 static struct mwifiex_ra_list_tbl
*
1064 mwifiex_wmm_get_highest_priolist_ptr(struct mwifiex_adapter
*adapter
,
1065 struct mwifiex_private
**priv
, int *tid
)
1067 struct mwifiex_private
*priv_tmp
;
1068 struct mwifiex_ra_list_tbl
*ptr
;
1069 struct mwifiex_tid_tbl
*tid_ptr
;
1071 unsigned long flags_ra
;
1074 /* check the BSS with highest priority first */
1075 for (j
= adapter
->priv_num
- 1; j
>= 0; --j
) {
1076 /* iterate over BSS with the equal priority */
1077 list_for_each_entry(adapter
->bss_prio_tbl
[j
].bss_prio_cur
,
1078 &adapter
->bss_prio_tbl
[j
].bss_prio_head
,
1081 priv_tmp
= adapter
->bss_prio_tbl
[j
].bss_prio_cur
->priv
;
1083 if (atomic_read(&priv_tmp
->wmm
.tx_pkts_queued
) == 0)
1086 /* iterate over the WMM queues of the BSS */
1087 hqp
= &priv_tmp
->wmm
.highest_queued_prio
;
1088 for (i
= atomic_read(hqp
); i
>= LOW_PRIO_TID
; --i
) {
1090 spin_lock_irqsave(&priv_tmp
->wmm
.
1091 ra_list_spinlock
, flags_ra
);
1093 tid_ptr
= &(priv_tmp
)->wmm
.
1094 tid_tbl_ptr
[tos_to_tid
[i
]];
1096 /* iterate over receiver addresses */
1097 list_for_each_entry(ptr
, &tid_ptr
->ra_list
,
1100 if (!ptr
->tx_paused
&&
1101 !skb_queue_empty(&ptr
->skb_head
))
1102 /* holds both locks */
1106 spin_unlock_irqrestore(&priv_tmp
->wmm
.
1117 /* holds ra_list_spinlock */
1118 if (atomic_read(hqp
) > i
)
1120 spin_unlock_irqrestore(&priv_tmp
->wmm
.ra_list_spinlock
, flags_ra
);
1123 *tid
= tos_to_tid
[i
];
1128 /* This functions rotates ra and bss lists so packets are picked round robin.
1130 * After a packet is successfully transmitted, rotate the ra list, so the ra
1131 * next to the one transmitted, will come first in the list. This way we pick
1132 * the ra' in a round robin fashion. Same applies to bss nodes of equal
1135 * Function also increments wmm.packets_out counter.
1137 void mwifiex_rotate_priolists(struct mwifiex_private
*priv
,
1138 struct mwifiex_ra_list_tbl
*ra
,
1141 struct mwifiex_adapter
*adapter
= priv
->adapter
;
1142 struct mwifiex_bss_prio_tbl
*tbl
= adapter
->bss_prio_tbl
;
1143 struct mwifiex_tid_tbl
*tid_ptr
= &priv
->wmm
.tid_tbl_ptr
[tid
];
1144 unsigned long flags
;
1146 spin_lock_irqsave(&tbl
[priv
->bss_priority
].bss_prio_lock
, flags
);
1148 * dirty trick: we remove 'head' temporarily and reinsert it after
1149 * curr bss node. imagine list to stay fixed while head is moved
1151 list_move(&tbl
[priv
->bss_priority
].bss_prio_head
,
1152 &tbl
[priv
->bss_priority
].bss_prio_cur
->list
);
1153 spin_unlock_irqrestore(&tbl
[priv
->bss_priority
].bss_prio_lock
, flags
);
1155 spin_lock_irqsave(&priv
->wmm
.ra_list_spinlock
, flags
);
1156 if (mwifiex_is_ralist_valid(priv
, ra
, tid
)) {
1157 priv
->wmm
.packets_out
[tid
]++;
1159 list_move(&tid_ptr
->ra_list
, &ra
->list
);
1161 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
, flags
);
1165 * This function checks if 11n aggregation is possible.
1168 mwifiex_is_11n_aggragation_possible(struct mwifiex_private
*priv
,
1169 struct mwifiex_ra_list_tbl
*ptr
,
1172 int count
= 0, total_size
= 0;
1173 struct sk_buff
*skb
, *tmp
;
1176 if (priv
->bss_role
== MWIFIEX_BSS_ROLE_UAP
&& priv
->ap_11n_enabled
&&
1177 ptr
->is_11n_enabled
)
1178 max_amsdu_size
= min_t(int, ptr
->max_amsdu
, max_buf_size
);
1180 max_amsdu_size
= max_buf_size
;
1182 skb_queue_walk_safe(&ptr
->skb_head
, skb
, tmp
) {
1183 total_size
+= skb
->len
;
1184 if (total_size
>= max_amsdu_size
)
1186 if (++count
>= MIN_NUM_AMSDU
)
1194 * This function sends a single packet to firmware for transmission.
1197 mwifiex_send_single_packet(struct mwifiex_private
*priv
,
1198 struct mwifiex_ra_list_tbl
*ptr
, int ptr_index
,
1199 unsigned long ra_list_flags
)
1200 __releases(&priv
->wmm
.ra_list_spinlock
)
1202 struct sk_buff
*skb
, *skb_next
;
1203 struct mwifiex_tx_param tx_param
;
1204 struct mwifiex_adapter
*adapter
= priv
->adapter
;
1205 struct mwifiex_txinfo
*tx_info
;
1207 if (skb_queue_empty(&ptr
->skb_head
)) {
1208 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
,
1210 mwifiex_dbg(adapter
, DATA
, "data: nothing to send\n");
1214 skb
= skb_dequeue(&ptr
->skb_head
);
1216 tx_info
= MWIFIEX_SKB_TXCB(skb
);
1217 mwifiex_dbg(adapter
, DATA
,
1218 "data: dequeuing the packet %p %p\n", ptr
, skb
);
1220 ptr
->total_pkt_count
--;
1222 if (!skb_queue_empty(&ptr
->skb_head
))
1223 skb_next
= skb_peek(&ptr
->skb_head
);
1227 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
, ra_list_flags
);
1229 tx_param
.next_pkt_len
= ((skb_next
) ? skb_next
->len
+
1230 sizeof(struct txpd
) : 0);
1232 if (mwifiex_process_tx(priv
, skb
, &tx_param
) == -EBUSY
) {
1233 /* Queue the packet back at the head */
1234 spin_lock_irqsave(&priv
->wmm
.ra_list_spinlock
, ra_list_flags
);
1236 if (!mwifiex_is_ralist_valid(priv
, ptr
, ptr_index
)) {
1237 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
,
1239 mwifiex_write_data_complete(adapter
, skb
, 0, -1);
1243 skb_queue_tail(&ptr
->skb_head
, skb
);
1245 ptr
->total_pkt_count
++;
1246 ptr
->ba_pkt_count
++;
1247 tx_info
->flags
|= MWIFIEX_BUF_FLAG_REQUEUED_PKT
;
1248 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
,
1251 mwifiex_rotate_priolists(priv
, ptr
, ptr_index
);
1252 atomic_dec(&priv
->wmm
.tx_pkts_queued
);
1257 * This function checks if the first packet in the given RA list
1258 * is already processed or not.
1261 mwifiex_is_ptr_processed(struct mwifiex_private
*priv
,
1262 struct mwifiex_ra_list_tbl
*ptr
)
1264 struct sk_buff
*skb
;
1265 struct mwifiex_txinfo
*tx_info
;
1267 if (skb_queue_empty(&ptr
->skb_head
))
1270 skb
= skb_peek(&ptr
->skb_head
);
1272 tx_info
= MWIFIEX_SKB_TXCB(skb
);
1273 if (tx_info
->flags
& MWIFIEX_BUF_FLAG_REQUEUED_PKT
)
1280 * This function sends a single processed packet to firmware for
1284 mwifiex_send_processed_packet(struct mwifiex_private
*priv
,
1285 struct mwifiex_ra_list_tbl
*ptr
, int ptr_index
,
1286 unsigned long ra_list_flags
)
1287 __releases(&priv
->wmm
.ra_list_spinlock
)
1289 struct mwifiex_tx_param tx_param
;
1290 struct mwifiex_adapter
*adapter
= priv
->adapter
;
1292 struct sk_buff
*skb
, *skb_next
;
1293 struct mwifiex_txinfo
*tx_info
;
1295 if (skb_queue_empty(&ptr
->skb_head
)) {
1296 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
,
1301 skb
= skb_dequeue(&ptr
->skb_head
);
1303 if (adapter
->data_sent
|| adapter
->tx_lock_flag
) {
1304 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
,
1306 skb_queue_tail(&adapter
->tx_data_q
, skb
);
1307 atomic_inc(&adapter
->tx_queued
);
1311 if (!skb_queue_empty(&ptr
->skb_head
))
1312 skb_next
= skb_peek(&ptr
->skb_head
);
1316 tx_info
= MWIFIEX_SKB_TXCB(skb
);
1318 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
, ra_list_flags
);
1320 if (adapter
->iface_type
== MWIFIEX_USB
) {
1321 adapter
->data_sent
= true;
1322 ret
= adapter
->if_ops
.host_to_card(adapter
, MWIFIEX_USB_EP_DATA
,
1325 tx_param
.next_pkt_len
=
1326 ((skb_next
) ? skb_next
->len
+
1327 sizeof(struct txpd
) : 0);
1328 ret
= adapter
->if_ops
.host_to_card(adapter
, MWIFIEX_TYPE_DATA
,
1334 mwifiex_dbg(adapter
, ERROR
, "data: -EBUSY is returned\n");
1335 spin_lock_irqsave(&priv
->wmm
.ra_list_spinlock
, ra_list_flags
);
1337 if (!mwifiex_is_ralist_valid(priv
, ptr
, ptr_index
)) {
1338 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
,
1340 mwifiex_write_data_complete(adapter
, skb
, 0, -1);
1344 skb_queue_tail(&ptr
->skb_head
, skb
);
1346 tx_info
->flags
|= MWIFIEX_BUF_FLAG_REQUEUED_PKT
;
1347 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
,
1351 if (adapter
->iface_type
!= MWIFIEX_PCIE
)
1352 adapter
->data_sent
= false;
1353 mwifiex_dbg(adapter
, ERROR
, "host_to_card failed: %#x\n", ret
);
1354 adapter
->dbg
.num_tx_host_to_card_failure
++;
1355 mwifiex_write_data_complete(adapter
, skb
, 0, ret
);
1358 if (adapter
->iface_type
!= MWIFIEX_PCIE
)
1359 adapter
->data_sent
= false;
1362 mwifiex_write_data_complete(adapter
, skb
, 0, ret
);
1366 if (ret
!= -EBUSY
) {
1367 mwifiex_rotate_priolists(priv
, ptr
, ptr_index
);
1368 atomic_dec(&priv
->wmm
.tx_pkts_queued
);
1373 * This function dequeues a packet from the highest priority list
1377 mwifiex_dequeue_tx_packet(struct mwifiex_adapter
*adapter
)
1379 struct mwifiex_ra_list_tbl
*ptr
;
1380 struct mwifiex_private
*priv
= NULL
;
1383 int tid_del
= 0, tid
= 0;
1384 unsigned long flags
;
1386 ptr
= mwifiex_wmm_get_highest_priolist_ptr(adapter
, &priv
, &ptr_index
);
1390 tid
= mwifiex_get_tid(ptr
);
1392 mwifiex_dbg(adapter
, DATA
, "data: tid=%d\n", tid
);
1394 spin_lock_irqsave(&priv
->wmm
.ra_list_spinlock
, flags
);
1395 if (!mwifiex_is_ralist_valid(priv
, ptr
, ptr_index
)) {
1396 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
, flags
);
1400 if (mwifiex_is_ptr_processed(priv
, ptr
)) {
1401 mwifiex_send_processed_packet(priv
, ptr
, ptr_index
, flags
);
1402 /* ra_list_spinlock has been freed in
1403 mwifiex_send_processed_packet() */
1407 if (!ptr
->is_11n_enabled
||
1409 priv
->wps
.session_enable
) {
1410 if (ptr
->is_11n_enabled
&&
1412 ptr
->amsdu_in_ampdu
&&
1413 mwifiex_is_amsdu_allowed(priv
, tid
) &&
1414 mwifiex_is_11n_aggragation_possible(priv
, ptr
,
1415 adapter
->tx_buf_size
))
1416 mwifiex_11n_aggregate_pkt(priv
, ptr
, ptr_index
, flags
);
1417 /* ra_list_spinlock has been freed in
1418 * mwifiex_11n_aggregate_pkt()
1421 mwifiex_send_single_packet(priv
, ptr
, ptr_index
, flags
);
1422 /* ra_list_spinlock has been freed in
1423 * mwifiex_send_single_packet()
1426 if (mwifiex_is_ampdu_allowed(priv
, ptr
, tid
) &&
1427 ptr
->ba_pkt_count
> ptr
->ba_packet_thr
) {
1428 if (mwifiex_space_avail_for_new_ba_stream(adapter
)) {
1429 mwifiex_create_ba_tbl(priv
, ptr
->ra
, tid
,
1430 BA_SETUP_INPROGRESS
);
1431 mwifiex_send_addba(priv
, tid
, ptr
->ra
);
1432 } else if (mwifiex_find_stream_to_delete
1433 (priv
, tid
, &tid_del
, ra
)) {
1434 mwifiex_create_ba_tbl(priv
, ptr
->ra
, tid
,
1435 BA_SETUP_INPROGRESS
);
1436 mwifiex_send_delba(priv
, tid_del
, ra
, 1);
1439 if (mwifiex_is_amsdu_allowed(priv
, tid
) &&
1440 mwifiex_is_11n_aggragation_possible(priv
, ptr
,
1441 adapter
->tx_buf_size
))
1442 mwifiex_11n_aggregate_pkt(priv
, ptr
, ptr_index
, flags
);
1443 /* ra_list_spinlock has been freed in
1444 mwifiex_11n_aggregate_pkt() */
1446 mwifiex_send_single_packet(priv
, ptr
, ptr_index
, flags
);
1447 /* ra_list_spinlock has been freed in
1448 mwifiex_send_single_packet() */
1453 void mwifiex_process_bypass_tx(struct mwifiex_adapter
*adapter
)
1455 struct mwifiex_tx_param tx_param
;
1456 struct sk_buff
*skb
;
1457 struct mwifiex_txinfo
*tx_info
;
1458 struct mwifiex_private
*priv
;
1461 if (adapter
->data_sent
|| adapter
->tx_lock_flag
)
1464 for (i
= 0; i
< adapter
->priv_num
; ++i
) {
1465 priv
= adapter
->priv
[i
];
1467 if (skb_queue_empty(&priv
->bypass_txq
))
1470 skb
= skb_dequeue(&priv
->bypass_txq
);
1471 tx_info
= MWIFIEX_SKB_TXCB(skb
);
1473 /* no aggregation for bypass packets */
1474 tx_param
.next_pkt_len
= 0;
1476 if (mwifiex_process_tx(priv
, skb
, &tx_param
) == -EBUSY
) {
1477 skb_queue_head(&priv
->bypass_txq
, skb
);
1478 tx_info
->flags
|= MWIFIEX_BUF_FLAG_REQUEUED_PKT
;
1480 atomic_dec(&adapter
->bypass_tx_pending
);
1486 * This function transmits the highest priority packet awaiting in the
1490 mwifiex_wmm_process_tx(struct mwifiex_adapter
*adapter
)
1493 if (mwifiex_dequeue_tx_packet(adapter
))
1495 if (adapter
->iface_type
!= MWIFIEX_SDIO
) {
1496 if (adapter
->data_sent
||
1497 adapter
->tx_lock_flag
)
1500 if (atomic_read(&adapter
->tx_queued
) >=
1501 MWIFIEX_MAX_PKTS_TXQ
)
1504 } while (!mwifiex_wmm_lists_empty(adapter
));