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 /* setup ba_packet_threshold here random number between
122 * [BA_SETUP_PACKET_OFFSET,
123 * BA_SETUP_PACKET_OFFSET+BA_SETUP_MAX_PACKET_THRESHOLD-1]
126 ns
+= (ns
>> 32) + (ns
>> 16);
128 return ((u8
)ns
% BA_SETUP_MAX_PACKET_THRESHOLD
) + BA_SETUP_PACKET_OFFSET
;
132 * This function allocates and adds a RA list for all TIDs
135 void mwifiex_ralist_add(struct mwifiex_private
*priv
, const u8
*ra
)
138 struct mwifiex_ra_list_tbl
*ra_list
;
139 struct mwifiex_adapter
*adapter
= priv
->adapter
;
140 struct mwifiex_sta_node
*node
;
144 for (i
= 0; i
< MAX_NUM_TID
; ++i
) {
145 ra_list
= mwifiex_wmm_allocate_ralist_node(adapter
, ra
);
146 mwifiex_dbg(adapter
, INFO
,
147 "info: created ra_list %p\n", ra_list
);
152 ra_list
->is_11n_enabled
= 0;
153 ra_list
->tdls_link
= false;
154 ra_list
->ba_status
= BA_SETUP_NONE
;
155 ra_list
->amsdu_in_ampdu
= false;
156 if (!mwifiex_queuing_ra_based(priv
)) {
157 if (mwifiex_is_tdls_link_setup
158 (mwifiex_get_tdls_link_status(priv
, ra
))) {
159 ra_list
->tdls_link
= true;
160 ra_list
->is_11n_enabled
=
161 mwifiex_tdls_peer_11n_enabled(priv
, ra
);
163 ra_list
->is_11n_enabled
= IS_11N_ENABLED(priv
);
166 spin_lock_irqsave(&priv
->sta_list_spinlock
, flags
);
167 node
= mwifiex_get_sta_entry(priv
, ra
);
169 ra_list
->tx_paused
= node
->tx_pause
;
170 ra_list
->is_11n_enabled
=
171 mwifiex_is_sta_11n_enabled(priv
, node
);
172 if (ra_list
->is_11n_enabled
)
173 ra_list
->max_amsdu
= node
->max_amsdu
;
174 spin_unlock_irqrestore(&priv
->sta_list_spinlock
, flags
);
177 mwifiex_dbg(adapter
, DATA
, "data: ralist %p: is_11n_enabled=%d\n",
178 ra_list
, ra_list
->is_11n_enabled
);
180 if (ra_list
->is_11n_enabled
) {
181 ra_list
->ba_pkt_count
= 0;
182 ra_list
->ba_packet_thr
=
183 mwifiex_get_random_ba_threshold();
185 list_add_tail(&ra_list
->list
,
186 &priv
->wmm
.tid_tbl_ptr
[i
].ra_list
);
191 * This function sets the WMM queue priorities to their default values.
193 static void mwifiex_wmm_default_queue_priorities(struct mwifiex_private
*priv
)
195 /* Default queue priorities: VO->VI->BE->BK */
196 priv
->wmm
.queue_priority
[0] = WMM_AC_VO
;
197 priv
->wmm
.queue_priority
[1] = WMM_AC_VI
;
198 priv
->wmm
.queue_priority
[2] = WMM_AC_BE
;
199 priv
->wmm
.queue_priority
[3] = WMM_AC_BK
;
203 * This function map ACs to TIDs.
206 mwifiex_wmm_queue_priorities_tid(struct mwifiex_private
*priv
)
208 struct mwifiex_wmm_desc
*wmm
= &priv
->wmm
;
209 u8
*queue_priority
= wmm
->queue_priority
;
212 for (i
= 0; i
< 4; ++i
) {
213 tos_to_tid
[7 - (i
* 2)] = ac_to_tid
[queue_priority
[i
]][1];
214 tos_to_tid
[6 - (i
* 2)] = ac_to_tid
[queue_priority
[i
]][0];
217 for (i
= 0; i
< MAX_NUM_TID
; ++i
)
218 priv
->tos_to_tid_inv
[tos_to_tid
[i
]] = (u8
)i
;
220 atomic_set(&wmm
->highest_queued_prio
, HIGH_PRIO_TID
);
224 * This function initializes WMM priority queues.
227 mwifiex_wmm_setup_queue_priorities(struct mwifiex_private
*priv
,
228 struct ieee_types_wmm_parameter
*wmm_ie
)
230 u16 cw_min
, avg_back_off
, tmp
[4];
234 if (!wmm_ie
|| !priv
->wmm_enabled
) {
235 /* WMM is not enabled, just set the defaults and return */
236 mwifiex_wmm_default_queue_priorities(priv
);
240 mwifiex_dbg(priv
->adapter
, INFO
,
241 "info: WMM Parameter IE: version=%d,\t"
242 "qos_info Parameter Set Count=%d, Reserved=%#x\n",
243 wmm_ie
->vend_hdr
.version
, wmm_ie
->qos_info_bitmap
&
244 IEEE80211_WMM_IE_AP_QOSINFO_PARAM_SET_CNT_MASK
,
247 for (num_ac
= 0; num_ac
< ARRAY_SIZE(wmm_ie
->ac_params
); num_ac
++) {
248 u8 ecw
= wmm_ie
->ac_params
[num_ac
].ecw_bitmap
;
249 u8 aci_aifsn
= wmm_ie
->ac_params
[num_ac
].aci_aifsn_bitmap
;
250 cw_min
= (1 << (ecw
& MWIFIEX_ECW_MIN
)) - 1;
251 avg_back_off
= (cw_min
>> 1) + (aci_aifsn
& MWIFIEX_AIFSN
);
253 ac_idx
= wmm_aci_to_qidx_map
[(aci_aifsn
& MWIFIEX_ACI
) >> 5];
254 priv
->wmm
.queue_priority
[ac_idx
] = ac_idx
;
255 tmp
[ac_idx
] = avg_back_off
;
257 mwifiex_dbg(priv
->adapter
, INFO
,
258 "info: WMM: CWmax=%d CWmin=%d Avg Back-off=%d\n",
259 (1 << ((ecw
& MWIFIEX_ECW_MAX
) >> 4)) - 1,
260 cw_min
, avg_back_off
);
261 mwifiex_wmm_ac_debug_print(&wmm_ie
->ac_params
[num_ac
]);
265 for (i
= 0; i
< num_ac
; i
++) {
266 for (j
= 1; j
< num_ac
- i
; j
++) {
267 if (tmp
[j
- 1] > tmp
[j
]) {
268 swap(tmp
[j
- 1], tmp
[j
]);
269 swap(priv
->wmm
.queue_priority
[j
- 1],
270 priv
->wmm
.queue_priority
[j
]);
271 } else if (tmp
[j
- 1] == tmp
[j
]) {
272 if (priv
->wmm
.queue_priority
[j
- 1]
273 < priv
->wmm
.queue_priority
[j
])
274 swap(priv
->wmm
.queue_priority
[j
- 1],
275 priv
->wmm
.queue_priority
[j
]);
280 mwifiex_wmm_queue_priorities_tid(priv
);
284 * This function evaluates whether or not an AC is to be downgraded.
286 * In case the AC is not enabled, the highest AC is returned that is
287 * enabled and does not require admission control.
289 static enum mwifiex_wmm_ac_e
290 mwifiex_wmm_eval_downgrade_ac(struct mwifiex_private
*priv
,
291 enum mwifiex_wmm_ac_e eval_ac
)
294 enum mwifiex_wmm_ac_e ret_ac
;
295 struct mwifiex_wmm_ac_status
*ac_status
;
297 ac_status
= &priv
->wmm
.ac_status
[eval_ac
];
299 if (!ac_status
->disabled
)
300 /* Okay to use this AC, its enabled */
303 /* Setup a default return value of the lowest priority */
307 * Find the highest AC that is enabled and does not require
308 * admission control. The spec disallows downgrading to an AC,
309 * which is enabled due to a completed admission control.
310 * Unadmitted traffic is not to be sent on an AC with admitted
313 for (down_ac
= WMM_AC_BK
; down_ac
< eval_ac
; down_ac
++) {
314 ac_status
= &priv
->wmm
.ac_status
[down_ac
];
316 if (!ac_status
->disabled
&& !ac_status
->flow_required
)
317 /* AC is enabled and does not require admission
319 ret_ac
= (enum mwifiex_wmm_ac_e
) down_ac
;
326 * This function downgrades WMM priority queue.
329 mwifiex_wmm_setup_ac_downgrade(struct mwifiex_private
*priv
)
333 mwifiex_dbg(priv
->adapter
, INFO
, "info: WMM: AC Priorities:\t"
334 "BK(0), BE(1), VI(2), VO(3)\n");
336 if (!priv
->wmm_enabled
) {
337 /* WMM is not enabled, default priorities */
338 for (ac_val
= WMM_AC_BK
; ac_val
<= WMM_AC_VO
; ac_val
++)
339 priv
->wmm
.ac_down_graded_vals
[ac_val
] =
340 (enum mwifiex_wmm_ac_e
) ac_val
;
342 for (ac_val
= WMM_AC_BK
; ac_val
<= WMM_AC_VO
; ac_val
++) {
343 priv
->wmm
.ac_down_graded_vals
[ac_val
]
344 = mwifiex_wmm_eval_downgrade_ac(priv
,
345 (enum mwifiex_wmm_ac_e
) ac_val
);
346 mwifiex_dbg(priv
->adapter
, INFO
,
347 "info: WMM: AC PRIO %d maps to %d\n",
349 priv
->wmm
.ac_down_graded_vals
[ac_val
]);
355 * This function converts the IP TOS field to an WMM AC
358 static enum mwifiex_wmm_ac_e
359 mwifiex_wmm_convert_tos_to_ac(struct mwifiex_adapter
*adapter
, u32 tos
)
361 /* Map of TOS UP values to WMM AC */
362 const enum mwifiex_wmm_ac_e tos_to_ac
[] = { WMM_AC_BE
,
372 if (tos
>= ARRAY_SIZE(tos_to_ac
))
375 return tos_to_ac
[tos
];
379 * This function evaluates a given TID and downgrades it to a lower
380 * TID if the WMM Parameter IE received from the AP indicates that the
381 * AP is disabled (due to call admission control (ACM bit). Mapping
382 * of TID to AC is taken care of internally.
384 u8
mwifiex_wmm_downgrade_tid(struct mwifiex_private
*priv
, u32 tid
)
386 enum mwifiex_wmm_ac_e ac
, ac_down
;
389 ac
= mwifiex_wmm_convert_tos_to_ac(priv
->adapter
, tid
);
390 ac_down
= priv
->wmm
.ac_down_graded_vals
[ac
];
392 /* Send the index to tid array, picking from the array will be
393 * taken care by dequeuing function
395 new_tid
= ac_to_tid
[ac_down
][tid
% 2];
401 * This function initializes the WMM state information and the
402 * WMM data path queues.
405 mwifiex_wmm_init(struct mwifiex_adapter
*adapter
)
408 struct mwifiex_private
*priv
;
410 for (j
= 0; j
< adapter
->priv_num
; ++j
) {
411 priv
= adapter
->priv
[j
];
415 for (i
= 0; i
< MAX_NUM_TID
; ++i
) {
416 if (!disable_tx_amsdu
&&
417 adapter
->tx_buf_size
> MWIFIEX_TX_DATA_BUF_SIZE_2K
)
418 priv
->aggr_prio_tbl
[i
].amsdu
=
419 priv
->tos_to_tid_inv
[i
];
421 priv
->aggr_prio_tbl
[i
].amsdu
=
422 BA_STREAM_NOT_ALLOWED
;
423 priv
->aggr_prio_tbl
[i
].ampdu_ap
=
424 priv
->tos_to_tid_inv
[i
];
425 priv
->aggr_prio_tbl
[i
].ampdu_user
=
426 priv
->tos_to_tid_inv
[i
];
429 priv
->aggr_prio_tbl
[6].amsdu
430 = priv
->aggr_prio_tbl
[6].ampdu_ap
431 = priv
->aggr_prio_tbl
[6].ampdu_user
432 = BA_STREAM_NOT_ALLOWED
;
434 priv
->aggr_prio_tbl
[7].amsdu
= priv
->aggr_prio_tbl
[7].ampdu_ap
435 = priv
->aggr_prio_tbl
[7].ampdu_user
436 = BA_STREAM_NOT_ALLOWED
;
438 mwifiex_set_ba_params(priv
);
439 mwifiex_reset_11n_rx_seq_num(priv
);
441 atomic_set(&priv
->wmm
.tx_pkts_queued
, 0);
442 atomic_set(&priv
->wmm
.highest_queued_prio
, HIGH_PRIO_TID
);
446 int mwifiex_bypass_txlist_empty(struct mwifiex_adapter
*adapter
)
448 struct mwifiex_private
*priv
;
451 for (i
= 0; i
< adapter
->priv_num
; i
++) {
452 priv
= adapter
->priv
[i
];
455 if (adapter
->if_ops
.is_port_ready
&&
456 !adapter
->if_ops
.is_port_ready(priv
))
458 if (!skb_queue_empty(&priv
->bypass_txq
))
466 * This function checks if WMM Tx queue is empty.
469 mwifiex_wmm_lists_empty(struct mwifiex_adapter
*adapter
)
472 struct mwifiex_private
*priv
;
474 for (i
= 0; i
< adapter
->priv_num
; ++i
) {
475 priv
= adapter
->priv
[i
];
478 if (!priv
->port_open
)
480 if (adapter
->if_ops
.is_port_ready
&&
481 !adapter
->if_ops
.is_port_ready(priv
))
483 if (atomic_read(&priv
->wmm
.tx_pkts_queued
))
491 * This function deletes all packets in an RA list node.
493 * The packet sent completion callback handler are called with
494 * status failure, after they are dequeued to ensure proper
495 * cleanup. The RA list node itself is freed at the end.
498 mwifiex_wmm_del_pkts_in_ralist_node(struct mwifiex_private
*priv
,
499 struct mwifiex_ra_list_tbl
*ra_list
)
501 struct mwifiex_adapter
*adapter
= priv
->adapter
;
502 struct sk_buff
*skb
, *tmp
;
504 skb_queue_walk_safe(&ra_list
->skb_head
, skb
, tmp
)
505 mwifiex_write_data_complete(adapter
, skb
, 0, -1);
509 * This function deletes all packets in an RA list.
511 * Each nodes in the RA list are freed individually first, and then
512 * the RA list itself is freed.
515 mwifiex_wmm_del_pkts_in_ralist(struct mwifiex_private
*priv
,
516 struct list_head
*ra_list_head
)
518 struct mwifiex_ra_list_tbl
*ra_list
;
520 list_for_each_entry(ra_list
, ra_list_head
, list
)
521 mwifiex_wmm_del_pkts_in_ralist_node(priv
, ra_list
);
525 * This function deletes all packets in all RA lists.
527 static void mwifiex_wmm_cleanup_queues(struct mwifiex_private
*priv
)
531 for (i
= 0; i
< MAX_NUM_TID
; i
++)
532 mwifiex_wmm_del_pkts_in_ralist(priv
, &priv
->wmm
.tid_tbl_ptr
[i
].
535 atomic_set(&priv
->wmm
.tx_pkts_queued
, 0);
536 atomic_set(&priv
->wmm
.highest_queued_prio
, HIGH_PRIO_TID
);
540 * This function deletes all route addresses from all RA lists.
542 static void mwifiex_wmm_delete_all_ralist(struct mwifiex_private
*priv
)
544 struct mwifiex_ra_list_tbl
*ra_list
, *tmp_node
;
547 for (i
= 0; i
< MAX_NUM_TID
; ++i
) {
548 mwifiex_dbg(priv
->adapter
, INFO
,
549 "info: ra_list: freeing buf for tid %d\n", i
);
550 list_for_each_entry_safe(ra_list
, tmp_node
,
551 &priv
->wmm
.tid_tbl_ptr
[i
].ra_list
,
553 list_del(&ra_list
->list
);
557 INIT_LIST_HEAD(&priv
->wmm
.tid_tbl_ptr
[i
].ra_list
);
561 static int mwifiex_free_ack_frame(int id
, void *p
, void *data
)
563 pr_warn("Have pending ack frames!\n");
569 * This function cleans up the Tx and Rx queues.
572 * - All packets in RA lists
573 * - All entries in Rx reorder table
574 * - All entries in Tx BA stream table
575 * - MPA buffer (if required)
579 mwifiex_clean_txrx(struct mwifiex_private
*priv
)
582 struct sk_buff
*skb
, *tmp
;
584 mwifiex_11n_cleanup_reorder_tbl(priv
);
585 spin_lock_irqsave(&priv
->wmm
.ra_list_spinlock
, flags
);
587 mwifiex_wmm_cleanup_queues(priv
);
588 mwifiex_11n_delete_all_tx_ba_stream_tbl(priv
);
590 if (priv
->adapter
->if_ops
.cleanup_mpa_buf
)
591 priv
->adapter
->if_ops
.cleanup_mpa_buf(priv
->adapter
);
593 mwifiex_wmm_delete_all_ralist(priv
);
594 memcpy(tos_to_tid
, ac_to_tid
, sizeof(tos_to_tid
));
596 if (priv
->adapter
->if_ops
.clean_pcie_ring
&&
597 !priv
->adapter
->surprise_removed
)
598 priv
->adapter
->if_ops
.clean_pcie_ring(priv
->adapter
);
599 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
, flags
);
601 skb_queue_walk_safe(&priv
->tdls_txq
, skb
, tmp
)
602 mwifiex_write_data_complete(priv
->adapter
, skb
, 0, -1);
604 skb_queue_walk_safe(&priv
->bypass_txq
, skb
, tmp
)
605 mwifiex_write_data_complete(priv
->adapter
, skb
, 0, -1);
606 atomic_set(&priv
->adapter
->bypass_tx_pending
, 0);
608 idr_for_each(&priv
->ack_status_frames
, mwifiex_free_ack_frame
, NULL
);
609 idr_destroy(&priv
->ack_status_frames
);
613 * This function retrieves a particular RA list node, matching with the
614 * given TID and RA address.
616 struct mwifiex_ra_list_tbl
*
617 mwifiex_wmm_get_ralist_node(struct mwifiex_private
*priv
, u8 tid
,
620 struct mwifiex_ra_list_tbl
*ra_list
;
622 list_for_each_entry(ra_list
, &priv
->wmm
.tid_tbl_ptr
[tid
].ra_list
,
624 if (!memcmp(ra_list
->ra
, ra_addr
, ETH_ALEN
))
631 void mwifiex_update_ralist_tx_pause(struct mwifiex_private
*priv
, u8
*mac
,
634 struct mwifiex_ra_list_tbl
*ra_list
;
635 u32 pkt_cnt
= 0, tx_pkts_queued
;
639 spin_lock_irqsave(&priv
->wmm
.ra_list_spinlock
, flags
);
641 for (i
= 0; i
< MAX_NUM_TID
; ++i
) {
642 ra_list
= mwifiex_wmm_get_ralist_node(priv
, i
, mac
);
643 if (ra_list
&& ra_list
->tx_paused
!= tx_pause
) {
644 pkt_cnt
+= ra_list
->total_pkt_count
;
645 ra_list
->tx_paused
= tx_pause
;
647 priv
->wmm
.pkts_paused
[i
] +=
648 ra_list
->total_pkt_count
;
650 priv
->wmm
.pkts_paused
[i
] -=
651 ra_list
->total_pkt_count
;
656 tx_pkts_queued
= atomic_read(&priv
->wmm
.tx_pkts_queued
);
658 tx_pkts_queued
-= pkt_cnt
;
660 tx_pkts_queued
+= pkt_cnt
;
662 atomic_set(&priv
->wmm
.tx_pkts_queued
, tx_pkts_queued
);
663 atomic_set(&priv
->wmm
.highest_queued_prio
, HIGH_PRIO_TID
);
665 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
, flags
);
668 /* This function update non-tdls peer ralist tx_pause while
669 * tdls channel swithing
671 void mwifiex_update_ralist_tx_pause_in_tdls_cs(struct mwifiex_private
*priv
,
672 u8
*mac
, u8 tx_pause
)
674 struct mwifiex_ra_list_tbl
*ra_list
;
675 u32 pkt_cnt
= 0, tx_pkts_queued
;
679 spin_lock_irqsave(&priv
->wmm
.ra_list_spinlock
, flags
);
681 for (i
= 0; i
< MAX_NUM_TID
; ++i
) {
682 list_for_each_entry(ra_list
, &priv
->wmm
.tid_tbl_ptr
[i
].ra_list
,
684 if (!memcmp(ra_list
->ra
, mac
, ETH_ALEN
))
687 if (ra_list
&& ra_list
->tx_paused
!= tx_pause
) {
688 pkt_cnt
+= ra_list
->total_pkt_count
;
689 ra_list
->tx_paused
= tx_pause
;
691 priv
->wmm
.pkts_paused
[i
] +=
692 ra_list
->total_pkt_count
;
694 priv
->wmm
.pkts_paused
[i
] -=
695 ra_list
->total_pkt_count
;
701 tx_pkts_queued
= atomic_read(&priv
->wmm
.tx_pkts_queued
);
703 tx_pkts_queued
-= pkt_cnt
;
705 tx_pkts_queued
+= pkt_cnt
;
707 atomic_set(&priv
->wmm
.tx_pkts_queued
, tx_pkts_queued
);
708 atomic_set(&priv
->wmm
.highest_queued_prio
, HIGH_PRIO_TID
);
710 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
, flags
);
714 * This function retrieves an RA list node for a given TID and
717 * If no such node is found, a new node is added first and then
720 struct mwifiex_ra_list_tbl
*
721 mwifiex_wmm_get_queue_raptr(struct mwifiex_private
*priv
, u8 tid
,
724 struct mwifiex_ra_list_tbl
*ra_list
;
726 ra_list
= mwifiex_wmm_get_ralist_node(priv
, tid
, ra_addr
);
729 mwifiex_ralist_add(priv
, ra_addr
);
731 return mwifiex_wmm_get_ralist_node(priv
, tid
, ra_addr
);
735 * This function deletes RA list nodes for given mac for all TIDs.
736 * Function also decrements TX pending count accordingly.
739 mwifiex_wmm_del_peer_ra_list(struct mwifiex_private
*priv
, const u8
*ra_addr
)
741 struct mwifiex_ra_list_tbl
*ra_list
;
745 spin_lock_irqsave(&priv
->wmm
.ra_list_spinlock
, flags
);
747 for (i
= 0; i
< MAX_NUM_TID
; ++i
) {
748 ra_list
= mwifiex_wmm_get_ralist_node(priv
, i
, ra_addr
);
752 mwifiex_wmm_del_pkts_in_ralist_node(priv
, ra_list
);
753 if (ra_list
->tx_paused
)
754 priv
->wmm
.pkts_paused
[i
] -= ra_list
->total_pkt_count
;
756 atomic_sub(ra_list
->total_pkt_count
,
757 &priv
->wmm
.tx_pkts_queued
);
758 list_del(&ra_list
->list
);
761 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
, flags
);
765 * This function checks if a particular RA list node exists in a given TID
769 mwifiex_is_ralist_valid(struct mwifiex_private
*priv
,
770 struct mwifiex_ra_list_tbl
*ra_list
, int ptr_index
)
772 struct mwifiex_ra_list_tbl
*rlist
;
774 list_for_each_entry(rlist
, &priv
->wmm
.tid_tbl_ptr
[ptr_index
].ra_list
,
776 if (rlist
== ra_list
)
784 * This function adds a packet to bypass TX queue.
785 * This is special TX queue for packets which can be sent even when port_open
789 mwifiex_wmm_add_buf_bypass_txqueue(struct mwifiex_private
*priv
,
792 skb_queue_tail(&priv
->bypass_txq
, skb
);
796 * This function adds a packet to WMM queue.
798 * In disconnected state the packet is immediately dropped and the
799 * packet send completion callback is called with status failure.
801 * Otherwise, the correct RA list node is located and the packet
802 * is queued at the list tail.
805 mwifiex_wmm_add_buf_txqueue(struct mwifiex_private
*priv
,
808 struct mwifiex_adapter
*adapter
= priv
->adapter
;
810 struct mwifiex_ra_list_tbl
*ra_list
;
811 u8 ra
[ETH_ALEN
], tid_down
;
813 struct list_head list_head
;
814 int tdls_status
= TDLS_NOT_SETUP
;
815 struct ethhdr
*eth_hdr
= (struct ethhdr
*)skb
->data
;
816 struct mwifiex_txinfo
*tx_info
= MWIFIEX_SKB_TXCB(skb
);
818 memcpy(ra
, eth_hdr
->h_dest
, ETH_ALEN
);
820 if (GET_BSS_ROLE(priv
) == MWIFIEX_BSS_ROLE_STA
&&
821 ISSUPP_TDLS_ENABLED(adapter
->fw_cap_info
)) {
822 if (ntohs(eth_hdr
->h_proto
) == ETH_P_TDLS
)
823 mwifiex_dbg(adapter
, DATA
,
824 "TDLS setup packet for %pM.\t"
825 "Don't block\n", ra
);
826 else if (memcmp(priv
->cfg_bssid
, ra
, ETH_ALEN
))
827 tdls_status
= mwifiex_get_tdls_link_status(priv
, ra
);
830 if (!priv
->media_connected
&& !mwifiex_is_skb_mgmt_frame(skb
)) {
831 mwifiex_dbg(adapter
, DATA
, "data: drop packet in disconnect\n");
832 mwifiex_write_data_complete(adapter
, skb
, 0, -1);
838 spin_lock_irqsave(&priv
->wmm
.ra_list_spinlock
, flags
);
840 tid_down
= mwifiex_wmm_downgrade_tid(priv
, tid
);
842 /* In case of infra as we have already created the list during
843 association we just don't have to call get_queue_raptr, we will
844 have only 1 raptr for a tid in case of infra */
845 if (!mwifiex_queuing_ra_based(priv
) &&
846 !mwifiex_is_skb_mgmt_frame(skb
)) {
847 switch (tdls_status
) {
848 case TDLS_SETUP_COMPLETE
:
849 case TDLS_CHAN_SWITCHING
:
850 case TDLS_IN_BASE_CHAN
:
851 case TDLS_IN_OFF_CHAN
:
852 ra_list
= mwifiex_wmm_get_queue_raptr(priv
, tid_down
,
854 tx_info
->flags
|= MWIFIEX_BUF_FLAG_TDLS_PKT
;
856 case TDLS_SETUP_INPROGRESS
:
857 skb_queue_tail(&priv
->tdls_txq
, skb
);
858 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
,
862 list_head
= priv
->wmm
.tid_tbl_ptr
[tid_down
].ra_list
;
863 if (!list_empty(&list_head
))
864 ra_list
= list_first_entry(
865 &list_head
, struct mwifiex_ra_list_tbl
,
872 memcpy(ra
, skb
->data
, ETH_ALEN
);
873 if (ra
[0] & 0x01 || mwifiex_is_skb_mgmt_frame(skb
))
874 eth_broadcast_addr(ra
);
875 ra_list
= mwifiex_wmm_get_queue_raptr(priv
, tid_down
, ra
);
879 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
, flags
);
880 mwifiex_write_data_complete(adapter
, skb
, 0, -1);
884 skb_queue_tail(&ra_list
->skb_head
, skb
);
886 ra_list
->ba_pkt_count
++;
887 ra_list
->total_pkt_count
++;
889 if (atomic_read(&priv
->wmm
.highest_queued_prio
) <
890 priv
->tos_to_tid_inv
[tid_down
])
891 atomic_set(&priv
->wmm
.highest_queued_prio
,
892 priv
->tos_to_tid_inv
[tid_down
]);
894 if (ra_list
->tx_paused
)
895 priv
->wmm
.pkts_paused
[tid_down
]++;
897 atomic_inc(&priv
->wmm
.tx_pkts_queued
);
899 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
, flags
);
903 * This function processes the get WMM status command response from firmware.
905 * The response may contain multiple TLVs -
906 * - AC Queue status TLVs
907 * - Current WMM Parameter IE TLV
908 * - Admission Control action frame TLVs
910 * This function parses the TLVs and then calls further specific functions
911 * to process any changes in the queue prioritize or state.
913 int mwifiex_ret_wmm_get_status(struct mwifiex_private
*priv
,
914 const struct host_cmd_ds_command
*resp
)
916 u8
*curr
= (u8
*) &resp
->params
.get_wmm_status
;
917 uint16_t resp_len
= le16_to_cpu(resp
->size
), tlv_len
;
918 int mask
= IEEE80211_WMM_IE_AP_QOSINFO_PARAM_SET_CNT_MASK
;
921 struct mwifiex_ie_types_data
*tlv_hdr
;
922 struct mwifiex_ie_types_wmm_queue_status
*tlv_wmm_qstatus
;
923 struct ieee_types_wmm_parameter
*wmm_param_ie
= NULL
;
924 struct mwifiex_wmm_ac_status
*ac_status
;
926 mwifiex_dbg(priv
->adapter
, INFO
,
927 "info: WMM: WMM_GET_STATUS cmdresp received: %d\n",
930 while ((resp_len
>= sizeof(tlv_hdr
->header
)) && valid
) {
931 tlv_hdr
= (struct mwifiex_ie_types_data
*) curr
;
932 tlv_len
= le16_to_cpu(tlv_hdr
->header
.len
);
934 if (resp_len
< tlv_len
+ sizeof(tlv_hdr
->header
))
937 switch (le16_to_cpu(tlv_hdr
->header
.type
)) {
938 case TLV_TYPE_WMMQSTATUS
:
940 (struct mwifiex_ie_types_wmm_queue_status
*)
942 mwifiex_dbg(priv
->adapter
, CMD
,
943 "info: CMD_RESP: WMM_GET_STATUS:\t"
944 "QSTATUS TLV: %d, %d, %d\n",
945 tlv_wmm_qstatus
->queue_index
,
946 tlv_wmm_qstatus
->flow_required
,
947 tlv_wmm_qstatus
->disabled
);
949 ac_status
= &priv
->wmm
.ac_status
[tlv_wmm_qstatus
->
951 ac_status
->disabled
= tlv_wmm_qstatus
->disabled
;
952 ac_status
->flow_required
=
953 tlv_wmm_qstatus
->flow_required
;
954 ac_status
->flow_created
= tlv_wmm_qstatus
->flow_created
;
957 case WLAN_EID_VENDOR_SPECIFIC
:
959 * Point the regular IEEE IE 2 bytes into the Marvell IE
960 * and setup the IEEE IE type and length byte fields
964 (struct ieee_types_wmm_parameter
*) (curr
+
966 wmm_param_ie
->vend_hdr
.len
= (u8
) tlv_len
;
967 wmm_param_ie
->vend_hdr
.element_id
=
968 WLAN_EID_VENDOR_SPECIFIC
;
970 mwifiex_dbg(priv
->adapter
, CMD
,
971 "info: CMD_RESP: WMM_GET_STATUS:\t"
972 "WMM Parameter Set Count: %d\n",
973 wmm_param_ie
->qos_info_bitmap
& mask
);
975 memcpy((u8
*) &priv
->curr_bss_params
.bss_descriptor
.
976 wmm_ie
, wmm_param_ie
,
977 wmm_param_ie
->vend_hdr
.len
+ 2);
986 curr
+= (tlv_len
+ sizeof(tlv_hdr
->header
));
987 resp_len
-= (tlv_len
+ sizeof(tlv_hdr
->header
));
990 mwifiex_wmm_setup_queue_priorities(priv
, wmm_param_ie
);
991 mwifiex_wmm_setup_ac_downgrade(priv
);
997 * Callback handler from the command module to allow insertion of a WMM TLV.
999 * If the BSS we are associating to supports WMM, this function adds the
1000 * required WMM Information IE to the association request command buffer in
1001 * the form of a Marvell extended IEEE IE.
1004 mwifiex_wmm_process_association_req(struct mwifiex_private
*priv
,
1006 struct ieee_types_wmm_parameter
*wmm_ie
,
1007 struct ieee80211_ht_cap
*ht_cap
)
1009 struct mwifiex_ie_types_wmm_param_set
*wmm_tlv
;
1021 mwifiex_dbg(priv
->adapter
, INFO
,
1022 "info: WMM: process assoc req: bss->wmm_ie=%#x\n",
1023 wmm_ie
->vend_hdr
.element_id
);
1025 if ((priv
->wmm_required
||
1026 (ht_cap
&& (priv
->adapter
->config_bands
& BAND_GN
||
1027 priv
->adapter
->config_bands
& BAND_AN
))) &&
1028 wmm_ie
->vend_hdr
.element_id
== WLAN_EID_VENDOR_SPECIFIC
) {
1029 wmm_tlv
= (struct mwifiex_ie_types_wmm_param_set
*) *assoc_buf
;
1030 wmm_tlv
->header
.type
= cpu_to_le16((u16
) wmm_info_ie
[0]);
1031 wmm_tlv
->header
.len
= cpu_to_le16((u16
) wmm_info_ie
[1]);
1032 memcpy(wmm_tlv
->wmm_ie
, &wmm_info_ie
[2],
1033 le16_to_cpu(wmm_tlv
->header
.len
));
1034 if (wmm_ie
->qos_info_bitmap
& IEEE80211_WMM_IE_AP_QOSINFO_UAPSD
)
1035 memcpy((u8
*) (wmm_tlv
->wmm_ie
1036 + le16_to_cpu(wmm_tlv
->header
.len
)
1037 - sizeof(priv
->wmm_qosinfo
)),
1038 &priv
->wmm_qosinfo
, sizeof(priv
->wmm_qosinfo
));
1040 ret_len
= sizeof(wmm_tlv
->header
)
1041 + le16_to_cpu(wmm_tlv
->header
.len
);
1043 *assoc_buf
+= ret_len
;
1050 * This function computes the time delay in the driver queues for a
1053 * When the packet is received at the OS/Driver interface, the current
1054 * time is set in the packet structure. The difference between the present
1055 * time and that received time is computed in this function and limited
1056 * based on pre-compiled limits in the driver.
1059 mwifiex_wmm_compute_drv_pkt_delay(struct mwifiex_private
*priv
,
1060 const struct sk_buff
*skb
)
1062 u32 queue_delay
= ktime_to_ms(net_timedelta(skb
->tstamp
));
1066 * Queue delay is passed as a uint8 in units of 2ms (ms shifted
1067 * by 1). Min value (other than 0) is therefore 2ms, max is 510ms.
1069 * Pass max value if queue_delay is beyond the uint8 range
1071 ret_val
= (u8
) (min(queue_delay
, priv
->wmm
.drv_pkt_delay_max
) >> 1);
1073 mwifiex_dbg(priv
->adapter
, DATA
, "data: WMM: Pkt Delay: %d ms,\t"
1074 "%d ms sent to FW\n", queue_delay
, ret_val
);
1080 * This function retrieves the highest priority RA list table pointer.
1082 static struct mwifiex_ra_list_tbl
*
1083 mwifiex_wmm_get_highest_priolist_ptr(struct mwifiex_adapter
*adapter
,
1084 struct mwifiex_private
**priv
, int *tid
)
1086 struct mwifiex_private
*priv_tmp
;
1087 struct mwifiex_ra_list_tbl
*ptr
;
1088 struct mwifiex_tid_tbl
*tid_ptr
;
1090 unsigned long flags_ra
;
1093 /* check the BSS with highest priority first */
1094 for (j
= adapter
->priv_num
- 1; j
>= 0; --j
) {
1095 /* iterate over BSS with the equal priority */
1096 list_for_each_entry(adapter
->bss_prio_tbl
[j
].bss_prio_cur
,
1097 &adapter
->bss_prio_tbl
[j
].bss_prio_head
,
1100 priv_tmp
= adapter
->bss_prio_tbl
[j
].bss_prio_cur
->priv
;
1102 if (!priv_tmp
->port_open
||
1103 (atomic_read(&priv_tmp
->wmm
.tx_pkts_queued
) == 0))
1106 if (adapter
->if_ops
.is_port_ready
&&
1107 !adapter
->if_ops
.is_port_ready(priv_tmp
))
1110 /* iterate over the WMM queues of the BSS */
1111 hqp
= &priv_tmp
->wmm
.highest_queued_prio
;
1112 for (i
= atomic_read(hqp
); i
>= LOW_PRIO_TID
; --i
) {
1114 spin_lock_irqsave(&priv_tmp
->wmm
.
1115 ra_list_spinlock
, flags_ra
);
1117 tid_ptr
= &(priv_tmp
)->wmm
.
1118 tid_tbl_ptr
[tos_to_tid
[i
]];
1120 /* iterate over receiver addresses */
1121 list_for_each_entry(ptr
, &tid_ptr
->ra_list
,
1124 if (!ptr
->tx_paused
&&
1125 !skb_queue_empty(&ptr
->skb_head
))
1126 /* holds both locks */
1130 spin_unlock_irqrestore(&priv_tmp
->wmm
.
1141 /* holds ra_list_spinlock */
1142 if (atomic_read(hqp
) > i
)
1144 spin_unlock_irqrestore(&priv_tmp
->wmm
.ra_list_spinlock
, flags_ra
);
1147 *tid
= tos_to_tid
[i
];
1152 /* This functions rotates ra and bss lists so packets are picked round robin.
1154 * After a packet is successfully transmitted, rotate the ra list, so the ra
1155 * next to the one transmitted, will come first in the list. This way we pick
1156 * the ra' in a round robin fashion. Same applies to bss nodes of equal
1159 * Function also increments wmm.packets_out counter.
1161 void mwifiex_rotate_priolists(struct mwifiex_private
*priv
,
1162 struct mwifiex_ra_list_tbl
*ra
,
1165 struct mwifiex_adapter
*adapter
= priv
->adapter
;
1166 struct mwifiex_bss_prio_tbl
*tbl
= adapter
->bss_prio_tbl
;
1167 struct mwifiex_tid_tbl
*tid_ptr
= &priv
->wmm
.tid_tbl_ptr
[tid
];
1168 unsigned long flags
;
1170 spin_lock_irqsave(&tbl
[priv
->bss_priority
].bss_prio_lock
, flags
);
1172 * dirty trick: we remove 'head' temporarily and reinsert it after
1173 * curr bss node. imagine list to stay fixed while head is moved
1175 list_move(&tbl
[priv
->bss_priority
].bss_prio_head
,
1176 &tbl
[priv
->bss_priority
].bss_prio_cur
->list
);
1177 spin_unlock_irqrestore(&tbl
[priv
->bss_priority
].bss_prio_lock
, flags
);
1179 spin_lock_irqsave(&priv
->wmm
.ra_list_spinlock
, flags
);
1180 if (mwifiex_is_ralist_valid(priv
, ra
, tid
)) {
1181 priv
->wmm
.packets_out
[tid
]++;
1183 list_move(&tid_ptr
->ra_list
, &ra
->list
);
1185 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
, flags
);
1189 * This function checks if 11n aggregation is possible.
1192 mwifiex_is_11n_aggragation_possible(struct mwifiex_private
*priv
,
1193 struct mwifiex_ra_list_tbl
*ptr
,
1196 int count
= 0, total_size
= 0;
1197 struct sk_buff
*skb
, *tmp
;
1200 if (priv
->bss_role
== MWIFIEX_BSS_ROLE_UAP
&& priv
->ap_11n_enabled
&&
1201 ptr
->is_11n_enabled
)
1202 max_amsdu_size
= min_t(int, ptr
->max_amsdu
, max_buf_size
);
1204 max_amsdu_size
= max_buf_size
;
1206 skb_queue_walk_safe(&ptr
->skb_head
, skb
, tmp
) {
1207 total_size
+= skb
->len
;
1208 if (total_size
>= max_amsdu_size
)
1210 if (++count
>= MIN_NUM_AMSDU
)
1218 * This function sends a single packet to firmware for transmission.
1221 mwifiex_send_single_packet(struct mwifiex_private
*priv
,
1222 struct mwifiex_ra_list_tbl
*ptr
, int ptr_index
,
1223 unsigned long ra_list_flags
)
1224 __releases(&priv
->wmm
.ra_list_spinlock
)
1226 struct sk_buff
*skb
, *skb_next
;
1227 struct mwifiex_tx_param tx_param
;
1228 struct mwifiex_adapter
*adapter
= priv
->adapter
;
1229 struct mwifiex_txinfo
*tx_info
;
1231 if (skb_queue_empty(&ptr
->skb_head
)) {
1232 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
,
1234 mwifiex_dbg(adapter
, DATA
, "data: nothing to send\n");
1238 skb
= skb_dequeue(&ptr
->skb_head
);
1240 tx_info
= MWIFIEX_SKB_TXCB(skb
);
1241 mwifiex_dbg(adapter
, DATA
,
1242 "data: dequeuing the packet %p %p\n", ptr
, skb
);
1244 ptr
->total_pkt_count
--;
1246 if (!skb_queue_empty(&ptr
->skb_head
))
1247 skb_next
= skb_peek(&ptr
->skb_head
);
1251 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
, ra_list_flags
);
1253 tx_param
.next_pkt_len
= ((skb_next
) ? skb_next
->len
+
1254 sizeof(struct txpd
) : 0);
1256 if (mwifiex_process_tx(priv
, skb
, &tx_param
) == -EBUSY
) {
1257 /* Queue the packet back at the head */
1258 spin_lock_irqsave(&priv
->wmm
.ra_list_spinlock
, ra_list_flags
);
1260 if (!mwifiex_is_ralist_valid(priv
, ptr
, ptr_index
)) {
1261 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
,
1263 mwifiex_write_data_complete(adapter
, skb
, 0, -1);
1267 skb_queue_tail(&ptr
->skb_head
, skb
);
1269 ptr
->total_pkt_count
++;
1270 ptr
->ba_pkt_count
++;
1271 tx_info
->flags
|= MWIFIEX_BUF_FLAG_REQUEUED_PKT
;
1272 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
,
1275 mwifiex_rotate_priolists(priv
, ptr
, ptr_index
);
1276 atomic_dec(&priv
->wmm
.tx_pkts_queued
);
1281 * This function checks if the first packet in the given RA list
1282 * is already processed or not.
1285 mwifiex_is_ptr_processed(struct mwifiex_private
*priv
,
1286 struct mwifiex_ra_list_tbl
*ptr
)
1288 struct sk_buff
*skb
;
1289 struct mwifiex_txinfo
*tx_info
;
1291 if (skb_queue_empty(&ptr
->skb_head
))
1294 skb
= skb_peek(&ptr
->skb_head
);
1296 tx_info
= MWIFIEX_SKB_TXCB(skb
);
1297 if (tx_info
->flags
& MWIFIEX_BUF_FLAG_REQUEUED_PKT
)
1304 * This function sends a single processed packet to firmware for
1308 mwifiex_send_processed_packet(struct mwifiex_private
*priv
,
1309 struct mwifiex_ra_list_tbl
*ptr
, int ptr_index
,
1310 unsigned long ra_list_flags
)
1311 __releases(&priv
->wmm
.ra_list_spinlock
)
1313 struct mwifiex_tx_param tx_param
;
1314 struct mwifiex_adapter
*adapter
= priv
->adapter
;
1316 struct sk_buff
*skb
, *skb_next
;
1317 struct mwifiex_txinfo
*tx_info
;
1319 if (skb_queue_empty(&ptr
->skb_head
)) {
1320 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
,
1325 skb
= skb_dequeue(&ptr
->skb_head
);
1327 if (adapter
->data_sent
|| adapter
->tx_lock_flag
) {
1328 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
,
1330 skb_queue_tail(&adapter
->tx_data_q
, skb
);
1331 atomic_inc(&adapter
->tx_queued
);
1335 if (!skb_queue_empty(&ptr
->skb_head
))
1336 skb_next
= skb_peek(&ptr
->skb_head
);
1340 tx_info
= MWIFIEX_SKB_TXCB(skb
);
1342 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
, ra_list_flags
);
1344 if (adapter
->iface_type
== MWIFIEX_USB
) {
1345 ret
= adapter
->if_ops
.host_to_card(adapter
, priv
->usb_port
,
1348 tx_param
.next_pkt_len
=
1349 ((skb_next
) ? skb_next
->len
+
1350 sizeof(struct txpd
) : 0);
1351 ret
= adapter
->if_ops
.host_to_card(adapter
, MWIFIEX_TYPE_DATA
,
1357 mwifiex_dbg(adapter
, ERROR
, "data: -EBUSY is returned\n");
1358 spin_lock_irqsave(&priv
->wmm
.ra_list_spinlock
, ra_list_flags
);
1360 if (!mwifiex_is_ralist_valid(priv
, ptr
, ptr_index
)) {
1361 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
,
1363 mwifiex_write_data_complete(adapter
, skb
, 0, -1);
1367 skb_queue_tail(&ptr
->skb_head
, skb
);
1369 tx_info
->flags
|= MWIFIEX_BUF_FLAG_REQUEUED_PKT
;
1370 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
,
1374 mwifiex_dbg(adapter
, ERROR
, "host_to_card failed: %#x\n", ret
);
1375 adapter
->dbg
.num_tx_host_to_card_failure
++;
1376 mwifiex_write_data_complete(adapter
, skb
, 0, ret
);
1381 mwifiex_write_data_complete(adapter
, skb
, 0, ret
);
1385 if (ret
!= -EBUSY
) {
1386 mwifiex_rotate_priolists(priv
, ptr
, ptr_index
);
1387 atomic_dec(&priv
->wmm
.tx_pkts_queued
);
1392 * This function dequeues a packet from the highest priority list
1396 mwifiex_dequeue_tx_packet(struct mwifiex_adapter
*adapter
)
1398 struct mwifiex_ra_list_tbl
*ptr
;
1399 struct mwifiex_private
*priv
= NULL
;
1402 int tid_del
= 0, tid
= 0;
1403 unsigned long flags
;
1405 ptr
= mwifiex_wmm_get_highest_priolist_ptr(adapter
, &priv
, &ptr_index
);
1409 tid
= mwifiex_get_tid(ptr
);
1411 mwifiex_dbg(adapter
, DATA
, "data: tid=%d\n", tid
);
1413 spin_lock_irqsave(&priv
->wmm
.ra_list_spinlock
, flags
);
1414 if (!mwifiex_is_ralist_valid(priv
, ptr
, ptr_index
)) {
1415 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
, flags
);
1419 if (mwifiex_is_ptr_processed(priv
, ptr
)) {
1420 mwifiex_send_processed_packet(priv
, ptr
, ptr_index
, flags
);
1421 /* ra_list_spinlock has been freed in
1422 mwifiex_send_processed_packet() */
1426 if (!ptr
->is_11n_enabled
||
1428 priv
->wps
.session_enable
) {
1429 if (ptr
->is_11n_enabled
&&
1431 ptr
->amsdu_in_ampdu
&&
1432 mwifiex_is_amsdu_allowed(priv
, tid
) &&
1433 mwifiex_is_11n_aggragation_possible(priv
, ptr
,
1434 adapter
->tx_buf_size
))
1435 mwifiex_11n_aggregate_pkt(priv
, ptr
, ptr_index
, flags
);
1436 /* ra_list_spinlock has been freed in
1437 * mwifiex_11n_aggregate_pkt()
1440 mwifiex_send_single_packet(priv
, ptr
, ptr_index
, flags
);
1441 /* ra_list_spinlock has been freed in
1442 * mwifiex_send_single_packet()
1445 if (mwifiex_is_ampdu_allowed(priv
, ptr
, tid
) &&
1446 ptr
->ba_pkt_count
> ptr
->ba_packet_thr
) {
1447 if (mwifiex_space_avail_for_new_ba_stream(adapter
)) {
1448 mwifiex_create_ba_tbl(priv
, ptr
->ra
, tid
,
1449 BA_SETUP_INPROGRESS
);
1450 mwifiex_send_addba(priv
, tid
, ptr
->ra
);
1451 } else if (mwifiex_find_stream_to_delete
1452 (priv
, tid
, &tid_del
, ra
)) {
1453 mwifiex_create_ba_tbl(priv
, ptr
->ra
, tid
,
1454 BA_SETUP_INPROGRESS
);
1455 mwifiex_send_delba(priv
, tid_del
, ra
, 1);
1458 if (mwifiex_is_amsdu_allowed(priv
, tid
) &&
1459 mwifiex_is_11n_aggragation_possible(priv
, ptr
,
1460 adapter
->tx_buf_size
))
1461 mwifiex_11n_aggregate_pkt(priv
, ptr
, ptr_index
, flags
);
1462 /* ra_list_spinlock has been freed in
1463 mwifiex_11n_aggregate_pkt() */
1465 mwifiex_send_single_packet(priv
, ptr
, ptr_index
, flags
);
1466 /* ra_list_spinlock has been freed in
1467 mwifiex_send_single_packet() */
1472 void mwifiex_process_bypass_tx(struct mwifiex_adapter
*adapter
)
1474 struct mwifiex_tx_param tx_param
;
1475 struct sk_buff
*skb
;
1476 struct mwifiex_txinfo
*tx_info
;
1477 struct mwifiex_private
*priv
;
1480 if (adapter
->data_sent
|| adapter
->tx_lock_flag
)
1483 for (i
= 0; i
< adapter
->priv_num
; ++i
) {
1484 priv
= adapter
->priv
[i
];
1489 if (adapter
->if_ops
.is_port_ready
&&
1490 !adapter
->if_ops
.is_port_ready(priv
))
1493 if (skb_queue_empty(&priv
->bypass_txq
))
1496 skb
= skb_dequeue(&priv
->bypass_txq
);
1497 tx_info
= MWIFIEX_SKB_TXCB(skb
);
1499 /* no aggregation for bypass packets */
1500 tx_param
.next_pkt_len
= 0;
1502 if (mwifiex_process_tx(priv
, skb
, &tx_param
) == -EBUSY
) {
1503 skb_queue_head(&priv
->bypass_txq
, skb
);
1504 tx_info
->flags
|= MWIFIEX_BUF_FLAG_REQUEUED_PKT
;
1506 atomic_dec(&adapter
->bypass_tx_pending
);
1512 * This function transmits the highest priority packet awaiting in the
1516 mwifiex_wmm_process_tx(struct mwifiex_adapter
*adapter
)
1519 if (mwifiex_dequeue_tx_packet(adapter
))
1521 if (adapter
->iface_type
!= MWIFIEX_SDIO
) {
1522 if (adapter
->data_sent
||
1523 adapter
->tx_lock_flag
)
1526 if (atomic_read(&adapter
->tx_queued
) >=
1527 MWIFIEX_MAX_PKTS_TXQ
)
1530 } while (!mwifiex_wmm_lists_empty(adapter
));