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
&& !priv
->port_open
)
470 if (priv
&& atomic_read(&priv
->wmm
.tx_pkts_queued
))
478 * This function deletes all packets in an RA list node.
480 * The packet sent completion callback handler are called with
481 * status failure, after they are dequeued to ensure proper
482 * cleanup. The RA list node itself is freed at the end.
485 mwifiex_wmm_del_pkts_in_ralist_node(struct mwifiex_private
*priv
,
486 struct mwifiex_ra_list_tbl
*ra_list
)
488 struct mwifiex_adapter
*adapter
= priv
->adapter
;
489 struct sk_buff
*skb
, *tmp
;
491 skb_queue_walk_safe(&ra_list
->skb_head
, skb
, tmp
)
492 mwifiex_write_data_complete(adapter
, skb
, 0, -1);
496 * This function deletes all packets in an RA list.
498 * Each nodes in the RA list are freed individually first, and then
499 * the RA list itself is freed.
502 mwifiex_wmm_del_pkts_in_ralist(struct mwifiex_private
*priv
,
503 struct list_head
*ra_list_head
)
505 struct mwifiex_ra_list_tbl
*ra_list
;
507 list_for_each_entry(ra_list
, ra_list_head
, list
)
508 mwifiex_wmm_del_pkts_in_ralist_node(priv
, ra_list
);
512 * This function deletes all packets in all RA lists.
514 static void mwifiex_wmm_cleanup_queues(struct mwifiex_private
*priv
)
518 for (i
= 0; i
< MAX_NUM_TID
; i
++)
519 mwifiex_wmm_del_pkts_in_ralist(priv
, &priv
->wmm
.tid_tbl_ptr
[i
].
522 atomic_set(&priv
->wmm
.tx_pkts_queued
, 0);
523 atomic_set(&priv
->wmm
.highest_queued_prio
, HIGH_PRIO_TID
);
527 * This function deletes all route addresses from all RA lists.
529 static void mwifiex_wmm_delete_all_ralist(struct mwifiex_private
*priv
)
531 struct mwifiex_ra_list_tbl
*ra_list
, *tmp_node
;
534 for (i
= 0; i
< MAX_NUM_TID
; ++i
) {
535 mwifiex_dbg(priv
->adapter
, INFO
,
536 "info: ra_list: freeing buf for tid %d\n", i
);
537 list_for_each_entry_safe(ra_list
, tmp_node
,
538 &priv
->wmm
.tid_tbl_ptr
[i
].ra_list
,
540 list_del(&ra_list
->list
);
544 INIT_LIST_HEAD(&priv
->wmm
.tid_tbl_ptr
[i
].ra_list
);
548 static int mwifiex_free_ack_frame(int id
, void *p
, void *data
)
550 pr_warn("Have pending ack frames!\n");
556 * This function cleans up the Tx and Rx queues.
559 * - All packets in RA lists
560 * - All entries in Rx reorder table
561 * - All entries in Tx BA stream table
562 * - MPA buffer (if required)
566 mwifiex_clean_txrx(struct mwifiex_private
*priv
)
569 struct sk_buff
*skb
, *tmp
;
571 mwifiex_11n_cleanup_reorder_tbl(priv
);
572 spin_lock_irqsave(&priv
->wmm
.ra_list_spinlock
, flags
);
574 mwifiex_wmm_cleanup_queues(priv
);
575 mwifiex_11n_delete_all_tx_ba_stream_tbl(priv
);
577 if (priv
->adapter
->if_ops
.cleanup_mpa_buf
)
578 priv
->adapter
->if_ops
.cleanup_mpa_buf(priv
->adapter
);
580 mwifiex_wmm_delete_all_ralist(priv
);
581 memcpy(tos_to_tid
, ac_to_tid
, sizeof(tos_to_tid
));
583 if (priv
->adapter
->if_ops
.clean_pcie_ring
&&
584 !priv
->adapter
->surprise_removed
)
585 priv
->adapter
->if_ops
.clean_pcie_ring(priv
->adapter
);
586 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
, flags
);
588 skb_queue_walk_safe(&priv
->tdls_txq
, skb
, tmp
)
589 mwifiex_write_data_complete(priv
->adapter
, skb
, 0, -1);
591 skb_queue_walk_safe(&priv
->bypass_txq
, skb
, tmp
)
592 mwifiex_write_data_complete(priv
->adapter
, skb
, 0, -1);
593 atomic_set(&priv
->adapter
->bypass_tx_pending
, 0);
595 idr_for_each(&priv
->ack_status_frames
, mwifiex_free_ack_frame
, NULL
);
596 idr_destroy(&priv
->ack_status_frames
);
600 * This function retrieves a particular RA list node, matching with the
601 * given TID and RA address.
603 struct mwifiex_ra_list_tbl
*
604 mwifiex_wmm_get_ralist_node(struct mwifiex_private
*priv
, u8 tid
,
607 struct mwifiex_ra_list_tbl
*ra_list
;
609 list_for_each_entry(ra_list
, &priv
->wmm
.tid_tbl_ptr
[tid
].ra_list
,
611 if (!memcmp(ra_list
->ra
, ra_addr
, ETH_ALEN
))
618 void mwifiex_update_ralist_tx_pause(struct mwifiex_private
*priv
, u8
*mac
,
621 struct mwifiex_ra_list_tbl
*ra_list
;
622 u32 pkt_cnt
= 0, tx_pkts_queued
;
626 spin_lock_irqsave(&priv
->wmm
.ra_list_spinlock
, flags
);
628 for (i
= 0; i
< MAX_NUM_TID
; ++i
) {
629 ra_list
= mwifiex_wmm_get_ralist_node(priv
, i
, mac
);
630 if (ra_list
&& ra_list
->tx_paused
!= tx_pause
) {
631 pkt_cnt
+= ra_list
->total_pkt_count
;
632 ra_list
->tx_paused
= tx_pause
;
634 priv
->wmm
.pkts_paused
[i
] +=
635 ra_list
->total_pkt_count
;
637 priv
->wmm
.pkts_paused
[i
] -=
638 ra_list
->total_pkt_count
;
643 tx_pkts_queued
= atomic_read(&priv
->wmm
.tx_pkts_queued
);
645 tx_pkts_queued
-= pkt_cnt
;
647 tx_pkts_queued
+= pkt_cnt
;
649 atomic_set(&priv
->wmm
.tx_pkts_queued
, tx_pkts_queued
);
650 atomic_set(&priv
->wmm
.highest_queued_prio
, HIGH_PRIO_TID
);
652 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
, flags
);
655 /* This function update non-tdls peer ralist tx_pause while
656 * tdls channel swithing
658 void mwifiex_update_ralist_tx_pause_in_tdls_cs(struct mwifiex_private
*priv
,
659 u8
*mac
, u8 tx_pause
)
661 struct mwifiex_ra_list_tbl
*ra_list
;
662 u32 pkt_cnt
= 0, tx_pkts_queued
;
666 spin_lock_irqsave(&priv
->wmm
.ra_list_spinlock
, flags
);
668 for (i
= 0; i
< MAX_NUM_TID
; ++i
) {
669 list_for_each_entry(ra_list
, &priv
->wmm
.tid_tbl_ptr
[i
].ra_list
,
671 if (!memcmp(ra_list
->ra
, mac
, ETH_ALEN
))
674 if (ra_list
&& ra_list
->tx_paused
!= tx_pause
) {
675 pkt_cnt
+= ra_list
->total_pkt_count
;
676 ra_list
->tx_paused
= tx_pause
;
678 priv
->wmm
.pkts_paused
[i
] +=
679 ra_list
->total_pkt_count
;
681 priv
->wmm
.pkts_paused
[i
] -=
682 ra_list
->total_pkt_count
;
688 tx_pkts_queued
= atomic_read(&priv
->wmm
.tx_pkts_queued
);
690 tx_pkts_queued
-= pkt_cnt
;
692 tx_pkts_queued
+= pkt_cnt
;
694 atomic_set(&priv
->wmm
.tx_pkts_queued
, tx_pkts_queued
);
695 atomic_set(&priv
->wmm
.highest_queued_prio
, HIGH_PRIO_TID
);
697 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
, flags
);
701 * This function retrieves an RA list node for a given TID and
704 * If no such node is found, a new node is added first and then
707 struct mwifiex_ra_list_tbl
*
708 mwifiex_wmm_get_queue_raptr(struct mwifiex_private
*priv
, u8 tid
,
711 struct mwifiex_ra_list_tbl
*ra_list
;
713 ra_list
= mwifiex_wmm_get_ralist_node(priv
, tid
, ra_addr
);
716 mwifiex_ralist_add(priv
, ra_addr
);
718 return mwifiex_wmm_get_ralist_node(priv
, tid
, ra_addr
);
722 * This function deletes RA list nodes for given mac for all TIDs.
723 * Function also decrements TX pending count accordingly.
726 mwifiex_wmm_del_peer_ra_list(struct mwifiex_private
*priv
, const u8
*ra_addr
)
728 struct mwifiex_ra_list_tbl
*ra_list
;
732 spin_lock_irqsave(&priv
->wmm
.ra_list_spinlock
, flags
);
734 for (i
= 0; i
< MAX_NUM_TID
; ++i
) {
735 ra_list
= mwifiex_wmm_get_ralist_node(priv
, i
, ra_addr
);
739 mwifiex_wmm_del_pkts_in_ralist_node(priv
, ra_list
);
740 atomic_sub(ra_list
->total_pkt_count
, &priv
->wmm
.tx_pkts_queued
);
741 list_del(&ra_list
->list
);
744 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
, flags
);
748 * This function checks if a particular RA list node exists in a given TID
752 mwifiex_is_ralist_valid(struct mwifiex_private
*priv
,
753 struct mwifiex_ra_list_tbl
*ra_list
, int ptr_index
)
755 struct mwifiex_ra_list_tbl
*rlist
;
757 list_for_each_entry(rlist
, &priv
->wmm
.tid_tbl_ptr
[ptr_index
].ra_list
,
759 if (rlist
== ra_list
)
767 * This function adds a packet to bypass TX queue.
768 * This is special TX queue for packets which can be sent even when port_open
772 mwifiex_wmm_add_buf_bypass_txqueue(struct mwifiex_private
*priv
,
775 skb_queue_tail(&priv
->bypass_txq
, skb
);
779 * This function adds a packet to WMM queue.
781 * In disconnected state the packet is immediately dropped and the
782 * packet send completion callback is called with status failure.
784 * Otherwise, the correct RA list node is located and the packet
785 * is queued at the list tail.
788 mwifiex_wmm_add_buf_txqueue(struct mwifiex_private
*priv
,
791 struct mwifiex_adapter
*adapter
= priv
->adapter
;
793 struct mwifiex_ra_list_tbl
*ra_list
;
794 u8 ra
[ETH_ALEN
], tid_down
;
796 struct list_head list_head
;
797 int tdls_status
= TDLS_NOT_SETUP
;
798 struct ethhdr
*eth_hdr
= (struct ethhdr
*)skb
->data
;
799 struct mwifiex_txinfo
*tx_info
= MWIFIEX_SKB_TXCB(skb
);
801 memcpy(ra
, eth_hdr
->h_dest
, ETH_ALEN
);
803 if (GET_BSS_ROLE(priv
) == MWIFIEX_BSS_ROLE_STA
&&
804 ISSUPP_TDLS_ENABLED(adapter
->fw_cap_info
)) {
805 if (ntohs(eth_hdr
->h_proto
) == ETH_P_TDLS
)
806 mwifiex_dbg(adapter
, DATA
,
807 "TDLS setup packet for %pM.\t"
808 "Don't block\n", ra
);
809 else if (memcmp(priv
->cfg_bssid
, ra
, ETH_ALEN
))
810 tdls_status
= mwifiex_get_tdls_link_status(priv
, ra
);
813 if (!priv
->media_connected
&& !mwifiex_is_skb_mgmt_frame(skb
)) {
814 mwifiex_dbg(adapter
, DATA
, "data: drop packet in disconnect\n");
815 mwifiex_write_data_complete(adapter
, skb
, 0, -1);
821 spin_lock_irqsave(&priv
->wmm
.ra_list_spinlock
, flags
);
823 tid_down
= mwifiex_wmm_downgrade_tid(priv
, tid
);
825 /* In case of infra as we have already created the list during
826 association we just don't have to call get_queue_raptr, we will
827 have only 1 raptr for a tid in case of infra */
828 if (!mwifiex_queuing_ra_based(priv
) &&
829 !mwifiex_is_skb_mgmt_frame(skb
)) {
830 switch (tdls_status
) {
831 case TDLS_SETUP_COMPLETE
:
832 case TDLS_CHAN_SWITCHING
:
833 case TDLS_IN_BASE_CHAN
:
834 case TDLS_IN_OFF_CHAN
:
835 ra_list
= mwifiex_wmm_get_queue_raptr(priv
, tid_down
,
837 tx_info
->flags
|= MWIFIEX_BUF_FLAG_TDLS_PKT
;
839 case TDLS_SETUP_INPROGRESS
:
840 skb_queue_tail(&priv
->tdls_txq
, skb
);
841 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
,
845 list_head
= priv
->wmm
.tid_tbl_ptr
[tid_down
].ra_list
;
846 if (!list_empty(&list_head
))
847 ra_list
= list_first_entry(
848 &list_head
, struct mwifiex_ra_list_tbl
,
855 memcpy(ra
, skb
->data
, ETH_ALEN
);
856 if (ra
[0] & 0x01 || mwifiex_is_skb_mgmt_frame(skb
))
857 eth_broadcast_addr(ra
);
858 ra_list
= mwifiex_wmm_get_queue_raptr(priv
, tid_down
, ra
);
862 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
, flags
);
863 mwifiex_write_data_complete(adapter
, skb
, 0, -1);
867 skb_queue_tail(&ra_list
->skb_head
, skb
);
869 ra_list
->ba_pkt_count
++;
870 ra_list
->total_pkt_count
++;
872 if (atomic_read(&priv
->wmm
.highest_queued_prio
) <
873 priv
->tos_to_tid_inv
[tid_down
])
874 atomic_set(&priv
->wmm
.highest_queued_prio
,
875 priv
->tos_to_tid_inv
[tid_down
]);
877 if (ra_list
->tx_paused
)
878 priv
->wmm
.pkts_paused
[tid_down
]++;
880 atomic_inc(&priv
->wmm
.tx_pkts_queued
);
882 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
, flags
);
886 * This function processes the get WMM status command response from firmware.
888 * The response may contain multiple TLVs -
889 * - AC Queue status TLVs
890 * - Current WMM Parameter IE TLV
891 * - Admission Control action frame TLVs
893 * This function parses the TLVs and then calls further specific functions
894 * to process any changes in the queue prioritize or state.
896 int mwifiex_ret_wmm_get_status(struct mwifiex_private
*priv
,
897 const struct host_cmd_ds_command
*resp
)
899 u8
*curr
= (u8
*) &resp
->params
.get_wmm_status
;
900 uint16_t resp_len
= le16_to_cpu(resp
->size
), tlv_len
;
901 int mask
= IEEE80211_WMM_IE_AP_QOSINFO_PARAM_SET_CNT_MASK
;
904 struct mwifiex_ie_types_data
*tlv_hdr
;
905 struct mwifiex_ie_types_wmm_queue_status
*tlv_wmm_qstatus
;
906 struct ieee_types_wmm_parameter
*wmm_param_ie
= NULL
;
907 struct mwifiex_wmm_ac_status
*ac_status
;
909 mwifiex_dbg(priv
->adapter
, INFO
,
910 "info: WMM: WMM_GET_STATUS cmdresp received: %d\n",
913 while ((resp_len
>= sizeof(tlv_hdr
->header
)) && valid
) {
914 tlv_hdr
= (struct mwifiex_ie_types_data
*) curr
;
915 tlv_len
= le16_to_cpu(tlv_hdr
->header
.len
);
917 if (resp_len
< tlv_len
+ sizeof(tlv_hdr
->header
))
920 switch (le16_to_cpu(tlv_hdr
->header
.type
)) {
921 case TLV_TYPE_WMMQSTATUS
:
923 (struct mwifiex_ie_types_wmm_queue_status
*)
925 mwifiex_dbg(priv
->adapter
, CMD
,
926 "info: CMD_RESP: WMM_GET_STATUS:\t"
927 "QSTATUS TLV: %d, %d, %d\n",
928 tlv_wmm_qstatus
->queue_index
,
929 tlv_wmm_qstatus
->flow_required
,
930 tlv_wmm_qstatus
->disabled
);
932 ac_status
= &priv
->wmm
.ac_status
[tlv_wmm_qstatus
->
934 ac_status
->disabled
= tlv_wmm_qstatus
->disabled
;
935 ac_status
->flow_required
=
936 tlv_wmm_qstatus
->flow_required
;
937 ac_status
->flow_created
= tlv_wmm_qstatus
->flow_created
;
940 case WLAN_EID_VENDOR_SPECIFIC
:
942 * Point the regular IEEE IE 2 bytes into the Marvell IE
943 * and setup the IEEE IE type and length byte fields
947 (struct ieee_types_wmm_parameter
*) (curr
+
949 wmm_param_ie
->vend_hdr
.len
= (u8
) tlv_len
;
950 wmm_param_ie
->vend_hdr
.element_id
=
951 WLAN_EID_VENDOR_SPECIFIC
;
953 mwifiex_dbg(priv
->adapter
, CMD
,
954 "info: CMD_RESP: WMM_GET_STATUS:\t"
955 "WMM Parameter Set Count: %d\n",
956 wmm_param_ie
->qos_info_bitmap
& mask
);
958 memcpy((u8
*) &priv
->curr_bss_params
.bss_descriptor
.
959 wmm_ie
, wmm_param_ie
,
960 wmm_param_ie
->vend_hdr
.len
+ 2);
969 curr
+= (tlv_len
+ sizeof(tlv_hdr
->header
));
970 resp_len
-= (tlv_len
+ sizeof(tlv_hdr
->header
));
973 mwifiex_wmm_setup_queue_priorities(priv
, wmm_param_ie
);
974 mwifiex_wmm_setup_ac_downgrade(priv
);
980 * Callback handler from the command module to allow insertion of a WMM TLV.
982 * If the BSS we are associating to supports WMM, this function adds the
983 * required WMM Information IE to the association request command buffer in
984 * the form of a Marvell extended IEEE IE.
987 mwifiex_wmm_process_association_req(struct mwifiex_private
*priv
,
989 struct ieee_types_wmm_parameter
*wmm_ie
,
990 struct ieee80211_ht_cap
*ht_cap
)
992 struct mwifiex_ie_types_wmm_param_set
*wmm_tlv
;
1004 mwifiex_dbg(priv
->adapter
, INFO
,
1005 "info: WMM: process assoc req: bss->wmm_ie=%#x\n",
1006 wmm_ie
->vend_hdr
.element_id
);
1008 if ((priv
->wmm_required
||
1009 (ht_cap
&& (priv
->adapter
->config_bands
& BAND_GN
||
1010 priv
->adapter
->config_bands
& BAND_AN
))) &&
1011 wmm_ie
->vend_hdr
.element_id
== WLAN_EID_VENDOR_SPECIFIC
) {
1012 wmm_tlv
= (struct mwifiex_ie_types_wmm_param_set
*) *assoc_buf
;
1013 wmm_tlv
->header
.type
= cpu_to_le16((u16
) wmm_info_ie
[0]);
1014 wmm_tlv
->header
.len
= cpu_to_le16((u16
) wmm_info_ie
[1]);
1015 memcpy(wmm_tlv
->wmm_ie
, &wmm_info_ie
[2],
1016 le16_to_cpu(wmm_tlv
->header
.len
));
1017 if (wmm_ie
->qos_info_bitmap
& IEEE80211_WMM_IE_AP_QOSINFO_UAPSD
)
1018 memcpy((u8
*) (wmm_tlv
->wmm_ie
1019 + le16_to_cpu(wmm_tlv
->header
.len
)
1020 - sizeof(priv
->wmm_qosinfo
)),
1021 &priv
->wmm_qosinfo
, sizeof(priv
->wmm_qosinfo
));
1023 ret_len
= sizeof(wmm_tlv
->header
)
1024 + le16_to_cpu(wmm_tlv
->header
.len
);
1026 *assoc_buf
+= ret_len
;
1033 * This function computes the time delay in the driver queues for a
1036 * When the packet is received at the OS/Driver interface, the current
1037 * time is set in the packet structure. The difference between the present
1038 * time and that received time is computed in this function and limited
1039 * based on pre-compiled limits in the driver.
1042 mwifiex_wmm_compute_drv_pkt_delay(struct mwifiex_private
*priv
,
1043 const struct sk_buff
*skb
)
1045 u32 queue_delay
= ktime_to_ms(net_timedelta(skb
->tstamp
));
1049 * Queue delay is passed as a uint8 in units of 2ms (ms shifted
1050 * by 1). Min value (other than 0) is therefore 2ms, max is 510ms.
1052 * Pass max value if queue_delay is beyond the uint8 range
1054 ret_val
= (u8
) (min(queue_delay
, priv
->wmm
.drv_pkt_delay_max
) >> 1);
1056 mwifiex_dbg(priv
->adapter
, DATA
, "data: WMM: Pkt Delay: %d ms,\t"
1057 "%d ms sent to FW\n", queue_delay
, ret_val
);
1063 * This function retrieves the highest priority RA list table pointer.
1065 static struct mwifiex_ra_list_tbl
*
1066 mwifiex_wmm_get_highest_priolist_ptr(struct mwifiex_adapter
*adapter
,
1067 struct mwifiex_private
**priv
, int *tid
)
1069 struct mwifiex_private
*priv_tmp
;
1070 struct mwifiex_ra_list_tbl
*ptr
;
1071 struct mwifiex_tid_tbl
*tid_ptr
;
1073 unsigned long flags_ra
;
1076 /* check the BSS with highest priority first */
1077 for (j
= adapter
->priv_num
- 1; j
>= 0; --j
) {
1078 /* iterate over BSS with the equal priority */
1079 list_for_each_entry(adapter
->bss_prio_tbl
[j
].bss_prio_cur
,
1080 &adapter
->bss_prio_tbl
[j
].bss_prio_head
,
1083 priv_tmp
= adapter
->bss_prio_tbl
[j
].bss_prio_cur
->priv
;
1085 if (!priv_tmp
->port_open
||
1086 (atomic_read(&priv_tmp
->wmm
.tx_pkts_queued
) == 0))
1089 /* iterate over the WMM queues of the BSS */
1090 hqp
= &priv_tmp
->wmm
.highest_queued_prio
;
1091 for (i
= atomic_read(hqp
); i
>= LOW_PRIO_TID
; --i
) {
1093 spin_lock_irqsave(&priv_tmp
->wmm
.
1094 ra_list_spinlock
, flags_ra
);
1096 tid_ptr
= &(priv_tmp
)->wmm
.
1097 tid_tbl_ptr
[tos_to_tid
[i
]];
1099 /* iterate over receiver addresses */
1100 list_for_each_entry(ptr
, &tid_ptr
->ra_list
,
1103 if (!ptr
->tx_paused
&&
1104 !skb_queue_empty(&ptr
->skb_head
))
1105 /* holds both locks */
1109 spin_unlock_irqrestore(&priv_tmp
->wmm
.
1120 /* holds ra_list_spinlock */
1121 if (atomic_read(hqp
) > i
)
1123 spin_unlock_irqrestore(&priv_tmp
->wmm
.ra_list_spinlock
, flags_ra
);
1126 *tid
= tos_to_tid
[i
];
1131 /* This functions rotates ra and bss lists so packets are picked round robin.
1133 * After a packet is successfully transmitted, rotate the ra list, so the ra
1134 * next to the one transmitted, will come first in the list. This way we pick
1135 * the ra' in a round robin fashion. Same applies to bss nodes of equal
1138 * Function also increments wmm.packets_out counter.
1140 void mwifiex_rotate_priolists(struct mwifiex_private
*priv
,
1141 struct mwifiex_ra_list_tbl
*ra
,
1144 struct mwifiex_adapter
*adapter
= priv
->adapter
;
1145 struct mwifiex_bss_prio_tbl
*tbl
= adapter
->bss_prio_tbl
;
1146 struct mwifiex_tid_tbl
*tid_ptr
= &priv
->wmm
.tid_tbl_ptr
[tid
];
1147 unsigned long flags
;
1149 spin_lock_irqsave(&tbl
[priv
->bss_priority
].bss_prio_lock
, flags
);
1151 * dirty trick: we remove 'head' temporarily and reinsert it after
1152 * curr bss node. imagine list to stay fixed while head is moved
1154 list_move(&tbl
[priv
->bss_priority
].bss_prio_head
,
1155 &tbl
[priv
->bss_priority
].bss_prio_cur
->list
);
1156 spin_unlock_irqrestore(&tbl
[priv
->bss_priority
].bss_prio_lock
, flags
);
1158 spin_lock_irqsave(&priv
->wmm
.ra_list_spinlock
, flags
);
1159 if (mwifiex_is_ralist_valid(priv
, ra
, tid
)) {
1160 priv
->wmm
.packets_out
[tid
]++;
1162 list_move(&tid_ptr
->ra_list
, &ra
->list
);
1164 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
, flags
);
1168 * This function checks if 11n aggregation is possible.
1171 mwifiex_is_11n_aggragation_possible(struct mwifiex_private
*priv
,
1172 struct mwifiex_ra_list_tbl
*ptr
,
1175 int count
= 0, total_size
= 0;
1176 struct sk_buff
*skb
, *tmp
;
1179 if (priv
->bss_role
== MWIFIEX_BSS_ROLE_UAP
&& priv
->ap_11n_enabled
&&
1180 ptr
->is_11n_enabled
)
1181 max_amsdu_size
= min_t(int, ptr
->max_amsdu
, max_buf_size
);
1183 max_amsdu_size
= max_buf_size
;
1185 skb_queue_walk_safe(&ptr
->skb_head
, skb
, tmp
) {
1186 total_size
+= skb
->len
;
1187 if (total_size
>= max_amsdu_size
)
1189 if (++count
>= MIN_NUM_AMSDU
)
1197 * This function sends a single packet to firmware for transmission.
1200 mwifiex_send_single_packet(struct mwifiex_private
*priv
,
1201 struct mwifiex_ra_list_tbl
*ptr
, int ptr_index
,
1202 unsigned long ra_list_flags
)
1203 __releases(&priv
->wmm
.ra_list_spinlock
)
1205 struct sk_buff
*skb
, *skb_next
;
1206 struct mwifiex_tx_param tx_param
;
1207 struct mwifiex_adapter
*adapter
= priv
->adapter
;
1208 struct mwifiex_txinfo
*tx_info
;
1210 if (skb_queue_empty(&ptr
->skb_head
)) {
1211 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
,
1213 mwifiex_dbg(adapter
, DATA
, "data: nothing to send\n");
1217 skb
= skb_dequeue(&ptr
->skb_head
);
1219 tx_info
= MWIFIEX_SKB_TXCB(skb
);
1220 mwifiex_dbg(adapter
, DATA
,
1221 "data: dequeuing the packet %p %p\n", ptr
, skb
);
1223 ptr
->total_pkt_count
--;
1225 if (!skb_queue_empty(&ptr
->skb_head
))
1226 skb_next
= skb_peek(&ptr
->skb_head
);
1230 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
, ra_list_flags
);
1232 tx_param
.next_pkt_len
= ((skb_next
) ? skb_next
->len
+
1233 sizeof(struct txpd
) : 0);
1235 if (mwifiex_process_tx(priv
, skb
, &tx_param
) == -EBUSY
) {
1236 /* Queue the packet back at the head */
1237 spin_lock_irqsave(&priv
->wmm
.ra_list_spinlock
, ra_list_flags
);
1239 if (!mwifiex_is_ralist_valid(priv
, ptr
, ptr_index
)) {
1240 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
,
1242 mwifiex_write_data_complete(adapter
, skb
, 0, -1);
1246 skb_queue_tail(&ptr
->skb_head
, skb
);
1248 ptr
->total_pkt_count
++;
1249 ptr
->ba_pkt_count
++;
1250 tx_info
->flags
|= MWIFIEX_BUF_FLAG_REQUEUED_PKT
;
1251 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
,
1254 mwifiex_rotate_priolists(priv
, ptr
, ptr_index
);
1255 atomic_dec(&priv
->wmm
.tx_pkts_queued
);
1260 * This function checks if the first packet in the given RA list
1261 * is already processed or not.
1264 mwifiex_is_ptr_processed(struct mwifiex_private
*priv
,
1265 struct mwifiex_ra_list_tbl
*ptr
)
1267 struct sk_buff
*skb
;
1268 struct mwifiex_txinfo
*tx_info
;
1270 if (skb_queue_empty(&ptr
->skb_head
))
1273 skb
= skb_peek(&ptr
->skb_head
);
1275 tx_info
= MWIFIEX_SKB_TXCB(skb
);
1276 if (tx_info
->flags
& MWIFIEX_BUF_FLAG_REQUEUED_PKT
)
1283 * This function sends a single processed packet to firmware for
1287 mwifiex_send_processed_packet(struct mwifiex_private
*priv
,
1288 struct mwifiex_ra_list_tbl
*ptr
, int ptr_index
,
1289 unsigned long ra_list_flags
)
1290 __releases(&priv
->wmm
.ra_list_spinlock
)
1292 struct mwifiex_tx_param tx_param
;
1293 struct mwifiex_adapter
*adapter
= priv
->adapter
;
1295 struct sk_buff
*skb
, *skb_next
;
1296 struct mwifiex_txinfo
*tx_info
;
1298 if (skb_queue_empty(&ptr
->skb_head
)) {
1299 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
,
1304 skb
= skb_dequeue(&ptr
->skb_head
);
1306 if (adapter
->data_sent
|| adapter
->tx_lock_flag
) {
1307 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
,
1309 skb_queue_tail(&adapter
->tx_data_q
, skb
);
1310 atomic_inc(&adapter
->tx_queued
);
1314 if (!skb_queue_empty(&ptr
->skb_head
))
1315 skb_next
= skb_peek(&ptr
->skb_head
);
1319 tx_info
= MWIFIEX_SKB_TXCB(skb
);
1321 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
, ra_list_flags
);
1323 if (adapter
->iface_type
== MWIFIEX_USB
) {
1324 adapter
->data_sent
= true;
1325 ret
= adapter
->if_ops
.host_to_card(adapter
, MWIFIEX_USB_EP_DATA
,
1328 tx_param
.next_pkt_len
=
1329 ((skb_next
) ? skb_next
->len
+
1330 sizeof(struct txpd
) : 0);
1331 ret
= adapter
->if_ops
.host_to_card(adapter
, MWIFIEX_TYPE_DATA
,
1337 mwifiex_dbg(adapter
, ERROR
, "data: -EBUSY is returned\n");
1338 spin_lock_irqsave(&priv
->wmm
.ra_list_spinlock
, ra_list_flags
);
1340 if (!mwifiex_is_ralist_valid(priv
, ptr
, ptr_index
)) {
1341 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
,
1343 mwifiex_write_data_complete(adapter
, skb
, 0, -1);
1347 skb_queue_tail(&ptr
->skb_head
, skb
);
1349 tx_info
->flags
|= MWIFIEX_BUF_FLAG_REQUEUED_PKT
;
1350 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
,
1354 if (adapter
->iface_type
!= MWIFIEX_PCIE
)
1355 adapter
->data_sent
= false;
1356 mwifiex_dbg(adapter
, ERROR
, "host_to_card failed: %#x\n", ret
);
1357 adapter
->dbg
.num_tx_host_to_card_failure
++;
1358 mwifiex_write_data_complete(adapter
, skb
, 0, ret
);
1361 if (adapter
->iface_type
!= MWIFIEX_PCIE
)
1362 adapter
->data_sent
= false;
1365 mwifiex_write_data_complete(adapter
, skb
, 0, ret
);
1369 if (ret
!= -EBUSY
) {
1370 mwifiex_rotate_priolists(priv
, ptr
, ptr_index
);
1371 atomic_dec(&priv
->wmm
.tx_pkts_queued
);
1376 * This function dequeues a packet from the highest priority list
1380 mwifiex_dequeue_tx_packet(struct mwifiex_adapter
*adapter
)
1382 struct mwifiex_ra_list_tbl
*ptr
;
1383 struct mwifiex_private
*priv
= NULL
;
1386 int tid_del
= 0, tid
= 0;
1387 unsigned long flags
;
1389 ptr
= mwifiex_wmm_get_highest_priolist_ptr(adapter
, &priv
, &ptr_index
);
1393 tid
= mwifiex_get_tid(ptr
);
1395 mwifiex_dbg(adapter
, DATA
, "data: tid=%d\n", tid
);
1397 spin_lock_irqsave(&priv
->wmm
.ra_list_spinlock
, flags
);
1398 if (!mwifiex_is_ralist_valid(priv
, ptr
, ptr_index
)) {
1399 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
, flags
);
1403 if (mwifiex_is_ptr_processed(priv
, ptr
)) {
1404 mwifiex_send_processed_packet(priv
, ptr
, ptr_index
, flags
);
1405 /* ra_list_spinlock has been freed in
1406 mwifiex_send_processed_packet() */
1410 if (!ptr
->is_11n_enabled
||
1412 priv
->wps
.session_enable
) {
1413 if (ptr
->is_11n_enabled
&&
1415 ptr
->amsdu_in_ampdu
&&
1416 mwifiex_is_amsdu_allowed(priv
, tid
) &&
1417 mwifiex_is_11n_aggragation_possible(priv
, ptr
,
1418 adapter
->tx_buf_size
))
1419 mwifiex_11n_aggregate_pkt(priv
, ptr
, ptr_index
, flags
);
1420 /* ra_list_spinlock has been freed in
1421 * mwifiex_11n_aggregate_pkt()
1424 mwifiex_send_single_packet(priv
, ptr
, ptr_index
, flags
);
1425 /* ra_list_spinlock has been freed in
1426 * mwifiex_send_single_packet()
1429 if (mwifiex_is_ampdu_allowed(priv
, ptr
, tid
) &&
1430 ptr
->ba_pkt_count
> ptr
->ba_packet_thr
) {
1431 if (mwifiex_space_avail_for_new_ba_stream(adapter
)) {
1432 mwifiex_create_ba_tbl(priv
, ptr
->ra
, tid
,
1433 BA_SETUP_INPROGRESS
);
1434 mwifiex_send_addba(priv
, tid
, ptr
->ra
);
1435 } else if (mwifiex_find_stream_to_delete
1436 (priv
, tid
, &tid_del
, ra
)) {
1437 mwifiex_create_ba_tbl(priv
, ptr
->ra
, tid
,
1438 BA_SETUP_INPROGRESS
);
1439 mwifiex_send_delba(priv
, tid_del
, ra
, 1);
1442 if (mwifiex_is_amsdu_allowed(priv
, tid
) &&
1443 mwifiex_is_11n_aggragation_possible(priv
, ptr
,
1444 adapter
->tx_buf_size
))
1445 mwifiex_11n_aggregate_pkt(priv
, ptr
, ptr_index
, flags
);
1446 /* ra_list_spinlock has been freed in
1447 mwifiex_11n_aggregate_pkt() */
1449 mwifiex_send_single_packet(priv
, ptr
, ptr_index
, flags
);
1450 /* ra_list_spinlock has been freed in
1451 mwifiex_send_single_packet() */
1456 void mwifiex_process_bypass_tx(struct mwifiex_adapter
*adapter
)
1458 struct mwifiex_tx_param tx_param
;
1459 struct sk_buff
*skb
;
1460 struct mwifiex_txinfo
*tx_info
;
1461 struct mwifiex_private
*priv
;
1464 if (adapter
->data_sent
|| adapter
->tx_lock_flag
)
1467 for (i
= 0; i
< adapter
->priv_num
; ++i
) {
1468 priv
= adapter
->priv
[i
];
1470 if (skb_queue_empty(&priv
->bypass_txq
))
1473 skb
= skb_dequeue(&priv
->bypass_txq
);
1474 tx_info
= MWIFIEX_SKB_TXCB(skb
);
1476 /* no aggregation for bypass packets */
1477 tx_param
.next_pkt_len
= 0;
1479 if (mwifiex_process_tx(priv
, skb
, &tx_param
) == -EBUSY
) {
1480 skb_queue_head(&priv
->bypass_txq
, skb
);
1481 tx_info
->flags
|= MWIFIEX_BUF_FLAG_REQUEUED_PKT
;
1483 atomic_dec(&adapter
->bypass_tx_pending
);
1489 * This function transmits the highest priority packet awaiting in the
1493 mwifiex_wmm_process_tx(struct mwifiex_adapter
*adapter
)
1496 if (mwifiex_dequeue_tx_packet(adapter
))
1498 if (adapter
->iface_type
!= MWIFIEX_SDIO
) {
1499 if (adapter
->data_sent
||
1500 adapter
->tx_lock_flag
)
1503 if (atomic_read(&adapter
->tx_queued
) >=
1504 MWIFIEX_MAX_PKTS_TXQ
)
1507 } while (!mwifiex_wmm_lists_empty(adapter
));