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 priv
->wmm
.drv_pkt_delay_max
= MWIFIEX_WMM_DRV_DELAY_MAX
;
442 atomic_set(&priv
->wmm
.tx_pkts_queued
, 0);
443 atomic_set(&priv
->wmm
.highest_queued_prio
, HIGH_PRIO_TID
);
447 int mwifiex_bypass_txlist_empty(struct mwifiex_adapter
*adapter
)
449 struct mwifiex_private
*priv
;
452 for (i
= 0; i
< adapter
->priv_num
; i
++) {
453 priv
= adapter
->priv
[i
];
456 if (adapter
->if_ops
.is_port_ready
&&
457 !adapter
->if_ops
.is_port_ready(priv
))
459 if (!skb_queue_empty(&priv
->bypass_txq
))
467 * This function checks if WMM Tx queue is empty.
470 mwifiex_wmm_lists_empty(struct mwifiex_adapter
*adapter
)
473 struct mwifiex_private
*priv
;
475 for (i
= 0; i
< adapter
->priv_num
; ++i
) {
476 priv
= adapter
->priv
[i
];
479 if (!priv
->port_open
&&
480 (priv
->bss_mode
!= NL80211_IFTYPE_ADHOC
))
482 if (adapter
->if_ops
.is_port_ready
&&
483 !adapter
->if_ops
.is_port_ready(priv
))
485 if (atomic_read(&priv
->wmm
.tx_pkts_queued
))
493 * This function deletes all packets in an RA list node.
495 * The packet sent completion callback handler are called with
496 * status failure, after they are dequeued to ensure proper
497 * cleanup. The RA list node itself is freed at the end.
500 mwifiex_wmm_del_pkts_in_ralist_node(struct mwifiex_private
*priv
,
501 struct mwifiex_ra_list_tbl
*ra_list
)
503 struct mwifiex_adapter
*adapter
= priv
->adapter
;
504 struct sk_buff
*skb
, *tmp
;
506 skb_queue_walk_safe(&ra_list
->skb_head
, skb
, tmp
) {
507 skb_unlink(skb
, &ra_list
->skb_head
);
508 mwifiex_write_data_complete(adapter
, skb
, 0, -1);
513 * This function deletes all packets in an RA list.
515 * Each nodes in the RA list are freed individually first, and then
516 * the RA list itself is freed.
519 mwifiex_wmm_del_pkts_in_ralist(struct mwifiex_private
*priv
,
520 struct list_head
*ra_list_head
)
522 struct mwifiex_ra_list_tbl
*ra_list
;
524 list_for_each_entry(ra_list
, ra_list_head
, list
)
525 mwifiex_wmm_del_pkts_in_ralist_node(priv
, ra_list
);
529 * This function deletes all packets in all RA lists.
531 static void mwifiex_wmm_cleanup_queues(struct mwifiex_private
*priv
)
535 for (i
= 0; i
< MAX_NUM_TID
; i
++)
536 mwifiex_wmm_del_pkts_in_ralist(priv
, &priv
->wmm
.tid_tbl_ptr
[i
].
539 atomic_set(&priv
->wmm
.tx_pkts_queued
, 0);
540 atomic_set(&priv
->wmm
.highest_queued_prio
, HIGH_PRIO_TID
);
544 * This function deletes all route addresses from all RA lists.
546 static void mwifiex_wmm_delete_all_ralist(struct mwifiex_private
*priv
)
548 struct mwifiex_ra_list_tbl
*ra_list
, *tmp_node
;
551 for (i
= 0; i
< MAX_NUM_TID
; ++i
) {
552 mwifiex_dbg(priv
->adapter
, INFO
,
553 "info: ra_list: freeing buf for tid %d\n", i
);
554 list_for_each_entry_safe(ra_list
, tmp_node
,
555 &priv
->wmm
.tid_tbl_ptr
[i
].ra_list
,
557 list_del(&ra_list
->list
);
561 INIT_LIST_HEAD(&priv
->wmm
.tid_tbl_ptr
[i
].ra_list
);
565 static int mwifiex_free_ack_frame(int id
, void *p
, void *data
)
567 pr_warn("Have pending ack frames!\n");
573 * This function cleans up the Tx and Rx queues.
576 * - All packets in RA lists
577 * - All entries in Rx reorder table
578 * - All entries in Tx BA stream table
579 * - MPA buffer (if required)
583 mwifiex_clean_txrx(struct mwifiex_private
*priv
)
586 struct sk_buff
*skb
, *tmp
;
588 mwifiex_11n_cleanup_reorder_tbl(priv
);
589 spin_lock_irqsave(&priv
->wmm
.ra_list_spinlock
, flags
);
591 mwifiex_wmm_cleanup_queues(priv
);
592 mwifiex_11n_delete_all_tx_ba_stream_tbl(priv
);
594 if (priv
->adapter
->if_ops
.cleanup_mpa_buf
)
595 priv
->adapter
->if_ops
.cleanup_mpa_buf(priv
->adapter
);
597 mwifiex_wmm_delete_all_ralist(priv
);
598 memcpy(tos_to_tid
, ac_to_tid
, sizeof(tos_to_tid
));
600 if (priv
->adapter
->if_ops
.clean_pcie_ring
&&
601 !priv
->adapter
->surprise_removed
)
602 priv
->adapter
->if_ops
.clean_pcie_ring(priv
->adapter
);
603 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
, flags
);
605 skb_queue_walk_safe(&priv
->tdls_txq
, skb
, tmp
) {
606 skb_unlink(skb
, &priv
->tdls_txq
);
607 mwifiex_write_data_complete(priv
->adapter
, skb
, 0, -1);
610 skb_queue_walk_safe(&priv
->bypass_txq
, skb
, tmp
) {
611 skb_unlink(skb
, &priv
->bypass_txq
);
612 mwifiex_write_data_complete(priv
->adapter
, skb
, 0, -1);
614 atomic_set(&priv
->adapter
->bypass_tx_pending
, 0);
616 idr_for_each(&priv
->ack_status_frames
, mwifiex_free_ack_frame
, NULL
);
617 idr_destroy(&priv
->ack_status_frames
);
621 * This function retrieves a particular RA list node, matching with the
622 * given TID and RA address.
624 struct mwifiex_ra_list_tbl
*
625 mwifiex_wmm_get_ralist_node(struct mwifiex_private
*priv
, u8 tid
,
628 struct mwifiex_ra_list_tbl
*ra_list
;
630 list_for_each_entry(ra_list
, &priv
->wmm
.tid_tbl_ptr
[tid
].ra_list
,
632 if (!memcmp(ra_list
->ra
, ra_addr
, ETH_ALEN
))
639 void mwifiex_update_ralist_tx_pause(struct mwifiex_private
*priv
, u8
*mac
,
642 struct mwifiex_ra_list_tbl
*ra_list
;
643 u32 pkt_cnt
= 0, tx_pkts_queued
;
647 spin_lock_irqsave(&priv
->wmm
.ra_list_spinlock
, flags
);
649 for (i
= 0; i
< MAX_NUM_TID
; ++i
) {
650 ra_list
= mwifiex_wmm_get_ralist_node(priv
, i
, mac
);
651 if (ra_list
&& ra_list
->tx_paused
!= tx_pause
) {
652 pkt_cnt
+= ra_list
->total_pkt_count
;
653 ra_list
->tx_paused
= tx_pause
;
655 priv
->wmm
.pkts_paused
[i
] +=
656 ra_list
->total_pkt_count
;
658 priv
->wmm
.pkts_paused
[i
] -=
659 ra_list
->total_pkt_count
;
664 tx_pkts_queued
= atomic_read(&priv
->wmm
.tx_pkts_queued
);
666 tx_pkts_queued
-= pkt_cnt
;
668 tx_pkts_queued
+= pkt_cnt
;
670 atomic_set(&priv
->wmm
.tx_pkts_queued
, tx_pkts_queued
);
671 atomic_set(&priv
->wmm
.highest_queued_prio
, HIGH_PRIO_TID
);
673 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
, flags
);
676 /* This function update non-tdls peer ralist tx_pause while
677 * tdls channel swithing
679 void mwifiex_update_ralist_tx_pause_in_tdls_cs(struct mwifiex_private
*priv
,
680 u8
*mac
, u8 tx_pause
)
682 struct mwifiex_ra_list_tbl
*ra_list
;
683 u32 pkt_cnt
= 0, tx_pkts_queued
;
687 spin_lock_irqsave(&priv
->wmm
.ra_list_spinlock
, flags
);
689 for (i
= 0; i
< MAX_NUM_TID
; ++i
) {
690 list_for_each_entry(ra_list
, &priv
->wmm
.tid_tbl_ptr
[i
].ra_list
,
692 if (!memcmp(ra_list
->ra
, mac
, ETH_ALEN
))
695 if (ra_list
->tx_paused
!= tx_pause
) {
696 pkt_cnt
+= ra_list
->total_pkt_count
;
697 ra_list
->tx_paused
= tx_pause
;
699 priv
->wmm
.pkts_paused
[i
] +=
700 ra_list
->total_pkt_count
;
702 priv
->wmm
.pkts_paused
[i
] -=
703 ra_list
->total_pkt_count
;
709 tx_pkts_queued
= atomic_read(&priv
->wmm
.tx_pkts_queued
);
711 tx_pkts_queued
-= pkt_cnt
;
713 tx_pkts_queued
+= pkt_cnt
;
715 atomic_set(&priv
->wmm
.tx_pkts_queued
, tx_pkts_queued
);
716 atomic_set(&priv
->wmm
.highest_queued_prio
, HIGH_PRIO_TID
);
718 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
, flags
);
722 * This function retrieves an RA list node for a given TID and
725 * If no such node is found, a new node is added first and then
728 struct mwifiex_ra_list_tbl
*
729 mwifiex_wmm_get_queue_raptr(struct mwifiex_private
*priv
, u8 tid
,
732 struct mwifiex_ra_list_tbl
*ra_list
;
734 ra_list
= mwifiex_wmm_get_ralist_node(priv
, tid
, ra_addr
);
737 mwifiex_ralist_add(priv
, ra_addr
);
739 return mwifiex_wmm_get_ralist_node(priv
, tid
, ra_addr
);
743 * This function deletes RA list nodes for given mac for all TIDs.
744 * Function also decrements TX pending count accordingly.
747 mwifiex_wmm_del_peer_ra_list(struct mwifiex_private
*priv
, const u8
*ra_addr
)
749 struct mwifiex_ra_list_tbl
*ra_list
;
753 spin_lock_irqsave(&priv
->wmm
.ra_list_spinlock
, flags
);
755 for (i
= 0; i
< MAX_NUM_TID
; ++i
) {
756 ra_list
= mwifiex_wmm_get_ralist_node(priv
, i
, ra_addr
);
760 mwifiex_wmm_del_pkts_in_ralist_node(priv
, ra_list
);
761 if (ra_list
->tx_paused
)
762 priv
->wmm
.pkts_paused
[i
] -= ra_list
->total_pkt_count
;
764 atomic_sub(ra_list
->total_pkt_count
,
765 &priv
->wmm
.tx_pkts_queued
);
766 list_del(&ra_list
->list
);
769 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
, flags
);
773 * This function checks if a particular RA list node exists in a given TID
777 mwifiex_is_ralist_valid(struct mwifiex_private
*priv
,
778 struct mwifiex_ra_list_tbl
*ra_list
, int ptr_index
)
780 struct mwifiex_ra_list_tbl
*rlist
;
782 list_for_each_entry(rlist
, &priv
->wmm
.tid_tbl_ptr
[ptr_index
].ra_list
,
784 if (rlist
== ra_list
)
792 * This function adds a packet to bypass TX queue.
793 * This is special TX queue for packets which can be sent even when port_open
797 mwifiex_wmm_add_buf_bypass_txqueue(struct mwifiex_private
*priv
,
800 skb_queue_tail(&priv
->bypass_txq
, skb
);
804 * This function adds a packet to WMM queue.
806 * In disconnected state the packet is immediately dropped and the
807 * packet send completion callback is called with status failure.
809 * Otherwise, the correct RA list node is located and the packet
810 * is queued at the list tail.
813 mwifiex_wmm_add_buf_txqueue(struct mwifiex_private
*priv
,
816 struct mwifiex_adapter
*adapter
= priv
->adapter
;
818 struct mwifiex_ra_list_tbl
*ra_list
;
819 u8 ra
[ETH_ALEN
], tid_down
;
821 struct list_head list_head
;
822 int tdls_status
= TDLS_NOT_SETUP
;
823 struct ethhdr
*eth_hdr
= (struct ethhdr
*)skb
->data
;
824 struct mwifiex_txinfo
*tx_info
= MWIFIEX_SKB_TXCB(skb
);
826 memcpy(ra
, eth_hdr
->h_dest
, ETH_ALEN
);
828 if (GET_BSS_ROLE(priv
) == MWIFIEX_BSS_ROLE_STA
&&
829 ISSUPP_TDLS_ENABLED(adapter
->fw_cap_info
)) {
830 if (ntohs(eth_hdr
->h_proto
) == ETH_P_TDLS
)
831 mwifiex_dbg(adapter
, DATA
,
832 "TDLS setup packet for %pM.\t"
833 "Don't block\n", ra
);
834 else if (memcmp(priv
->cfg_bssid
, ra
, ETH_ALEN
))
835 tdls_status
= mwifiex_get_tdls_link_status(priv
, ra
);
838 if (!priv
->media_connected
&& !mwifiex_is_skb_mgmt_frame(skb
)) {
839 mwifiex_dbg(adapter
, DATA
, "data: drop packet in disconnect\n");
840 mwifiex_write_data_complete(adapter
, skb
, 0, -1);
846 spin_lock_irqsave(&priv
->wmm
.ra_list_spinlock
, flags
);
848 tid_down
= mwifiex_wmm_downgrade_tid(priv
, tid
);
850 /* In case of infra as we have already created the list during
851 association we just don't have to call get_queue_raptr, we will
852 have only 1 raptr for a tid in case of infra */
853 if (!mwifiex_queuing_ra_based(priv
) &&
854 !mwifiex_is_skb_mgmt_frame(skb
)) {
855 switch (tdls_status
) {
856 case TDLS_SETUP_COMPLETE
:
857 case TDLS_CHAN_SWITCHING
:
858 case TDLS_IN_BASE_CHAN
:
859 case TDLS_IN_OFF_CHAN
:
860 ra_list
= mwifiex_wmm_get_queue_raptr(priv
, tid_down
,
862 tx_info
->flags
|= MWIFIEX_BUF_FLAG_TDLS_PKT
;
864 case TDLS_SETUP_INPROGRESS
:
865 skb_queue_tail(&priv
->tdls_txq
, skb
);
866 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
,
870 list_head
= priv
->wmm
.tid_tbl_ptr
[tid_down
].ra_list
;
871 if (!list_empty(&list_head
))
872 ra_list
= list_first_entry(
873 &list_head
, struct mwifiex_ra_list_tbl
,
880 memcpy(ra
, skb
->data
, ETH_ALEN
);
881 if (ra
[0] & 0x01 || mwifiex_is_skb_mgmt_frame(skb
))
882 eth_broadcast_addr(ra
);
883 ra_list
= mwifiex_wmm_get_queue_raptr(priv
, tid_down
, ra
);
887 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
, flags
);
888 mwifiex_write_data_complete(adapter
, skb
, 0, -1);
892 skb_queue_tail(&ra_list
->skb_head
, skb
);
894 ra_list
->ba_pkt_count
++;
895 ra_list
->total_pkt_count
++;
897 if (atomic_read(&priv
->wmm
.highest_queued_prio
) <
898 priv
->tos_to_tid_inv
[tid_down
])
899 atomic_set(&priv
->wmm
.highest_queued_prio
,
900 priv
->tos_to_tid_inv
[tid_down
]);
902 if (ra_list
->tx_paused
)
903 priv
->wmm
.pkts_paused
[tid_down
]++;
905 atomic_inc(&priv
->wmm
.tx_pkts_queued
);
907 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
, flags
);
911 * This function processes the get WMM status command response from firmware.
913 * The response may contain multiple TLVs -
914 * - AC Queue status TLVs
915 * - Current WMM Parameter IE TLV
916 * - Admission Control action frame TLVs
918 * This function parses the TLVs and then calls further specific functions
919 * to process any changes in the queue prioritize or state.
921 int mwifiex_ret_wmm_get_status(struct mwifiex_private
*priv
,
922 const struct host_cmd_ds_command
*resp
)
924 u8
*curr
= (u8
*) &resp
->params
.get_wmm_status
;
925 uint16_t resp_len
= le16_to_cpu(resp
->size
), tlv_len
;
926 int mask
= IEEE80211_WMM_IE_AP_QOSINFO_PARAM_SET_CNT_MASK
;
929 struct mwifiex_ie_types_data
*tlv_hdr
;
930 struct mwifiex_ie_types_wmm_queue_status
*tlv_wmm_qstatus
;
931 struct ieee_types_wmm_parameter
*wmm_param_ie
= NULL
;
932 struct mwifiex_wmm_ac_status
*ac_status
;
934 mwifiex_dbg(priv
->adapter
, INFO
,
935 "info: WMM: WMM_GET_STATUS cmdresp received: %d\n",
938 while ((resp_len
>= sizeof(tlv_hdr
->header
)) && valid
) {
939 tlv_hdr
= (struct mwifiex_ie_types_data
*) curr
;
940 tlv_len
= le16_to_cpu(tlv_hdr
->header
.len
);
942 if (resp_len
< tlv_len
+ sizeof(tlv_hdr
->header
))
945 switch (le16_to_cpu(tlv_hdr
->header
.type
)) {
946 case TLV_TYPE_WMMQSTATUS
:
948 (struct mwifiex_ie_types_wmm_queue_status
*)
950 mwifiex_dbg(priv
->adapter
, CMD
,
951 "info: CMD_RESP: WMM_GET_STATUS:\t"
952 "QSTATUS TLV: %d, %d, %d\n",
953 tlv_wmm_qstatus
->queue_index
,
954 tlv_wmm_qstatus
->flow_required
,
955 tlv_wmm_qstatus
->disabled
);
957 ac_status
= &priv
->wmm
.ac_status
[tlv_wmm_qstatus
->
959 ac_status
->disabled
= tlv_wmm_qstatus
->disabled
;
960 ac_status
->flow_required
=
961 tlv_wmm_qstatus
->flow_required
;
962 ac_status
->flow_created
= tlv_wmm_qstatus
->flow_created
;
965 case WLAN_EID_VENDOR_SPECIFIC
:
967 * Point the regular IEEE IE 2 bytes into the Marvell IE
968 * and setup the IEEE IE type and length byte fields
972 (struct ieee_types_wmm_parameter
*) (curr
+
974 wmm_param_ie
->vend_hdr
.len
= (u8
) tlv_len
;
975 wmm_param_ie
->vend_hdr
.element_id
=
976 WLAN_EID_VENDOR_SPECIFIC
;
978 mwifiex_dbg(priv
->adapter
, CMD
,
979 "info: CMD_RESP: WMM_GET_STATUS:\t"
980 "WMM Parameter Set Count: %d\n",
981 wmm_param_ie
->qos_info_bitmap
& mask
);
983 memcpy((u8
*) &priv
->curr_bss_params
.bss_descriptor
.
984 wmm_ie
, wmm_param_ie
,
985 wmm_param_ie
->vend_hdr
.len
+ 2);
994 curr
+= (tlv_len
+ sizeof(tlv_hdr
->header
));
995 resp_len
-= (tlv_len
+ sizeof(tlv_hdr
->header
));
998 mwifiex_wmm_setup_queue_priorities(priv
, wmm_param_ie
);
999 mwifiex_wmm_setup_ac_downgrade(priv
);
1005 * Callback handler from the command module to allow insertion of a WMM TLV.
1007 * If the BSS we are associating to supports WMM, this function adds the
1008 * required WMM Information IE to the association request command buffer in
1009 * the form of a Marvell extended IEEE IE.
1012 mwifiex_wmm_process_association_req(struct mwifiex_private
*priv
,
1014 struct ieee_types_wmm_parameter
*wmm_ie
,
1015 struct ieee80211_ht_cap
*ht_cap
)
1017 struct mwifiex_ie_types_wmm_param_set
*wmm_tlv
;
1029 mwifiex_dbg(priv
->adapter
, INFO
,
1030 "info: WMM: process assoc req: bss->wmm_ie=%#x\n",
1031 wmm_ie
->vend_hdr
.element_id
);
1033 if ((priv
->wmm_required
||
1034 (ht_cap
&& (priv
->adapter
->config_bands
& BAND_GN
||
1035 priv
->adapter
->config_bands
& BAND_AN
))) &&
1036 wmm_ie
->vend_hdr
.element_id
== WLAN_EID_VENDOR_SPECIFIC
) {
1037 wmm_tlv
= (struct mwifiex_ie_types_wmm_param_set
*) *assoc_buf
;
1038 wmm_tlv
->header
.type
= cpu_to_le16((u16
) wmm_info_ie
[0]);
1039 wmm_tlv
->header
.len
= cpu_to_le16((u16
) wmm_info_ie
[1]);
1040 memcpy(wmm_tlv
->wmm_ie
, &wmm_info_ie
[2],
1041 le16_to_cpu(wmm_tlv
->header
.len
));
1042 if (wmm_ie
->qos_info_bitmap
& IEEE80211_WMM_IE_AP_QOSINFO_UAPSD
)
1043 memcpy((u8
*) (wmm_tlv
->wmm_ie
1044 + le16_to_cpu(wmm_tlv
->header
.len
)
1045 - sizeof(priv
->wmm_qosinfo
)),
1046 &priv
->wmm_qosinfo
, sizeof(priv
->wmm_qosinfo
));
1048 ret_len
= sizeof(wmm_tlv
->header
)
1049 + le16_to_cpu(wmm_tlv
->header
.len
);
1051 *assoc_buf
+= ret_len
;
1058 * This function computes the time delay in the driver queues for a
1061 * When the packet is received at the OS/Driver interface, the current
1062 * time is set in the packet structure. The difference between the present
1063 * time and that received time is computed in this function and limited
1064 * based on pre-compiled limits in the driver.
1067 mwifiex_wmm_compute_drv_pkt_delay(struct mwifiex_private
*priv
,
1068 const struct sk_buff
*skb
)
1070 u32 queue_delay
= ktime_to_ms(net_timedelta(skb
->tstamp
));
1074 * Queue delay is passed as a uint8 in units of 2ms (ms shifted
1075 * by 1). Min value (other than 0) is therefore 2ms, max is 510ms.
1077 * Pass max value if queue_delay is beyond the uint8 range
1079 ret_val
= (u8
) (min(queue_delay
, priv
->wmm
.drv_pkt_delay_max
) >> 1);
1081 mwifiex_dbg(priv
->adapter
, DATA
, "data: WMM: Pkt Delay: %d ms,\t"
1082 "%d ms sent to FW\n", queue_delay
, ret_val
);
1088 * This function retrieves the highest priority RA list table pointer.
1090 static struct mwifiex_ra_list_tbl
*
1091 mwifiex_wmm_get_highest_priolist_ptr(struct mwifiex_adapter
*adapter
,
1092 struct mwifiex_private
**priv
, int *tid
)
1094 struct mwifiex_private
*priv_tmp
;
1095 struct mwifiex_ra_list_tbl
*ptr
;
1096 struct mwifiex_tid_tbl
*tid_ptr
;
1098 unsigned long flags_ra
;
1101 /* check the BSS with highest priority first */
1102 for (j
= adapter
->priv_num
- 1; j
>= 0; --j
) {
1103 /* iterate over BSS with the equal priority */
1104 list_for_each_entry(adapter
->bss_prio_tbl
[j
].bss_prio_cur
,
1105 &adapter
->bss_prio_tbl
[j
].bss_prio_head
,
1109 priv_tmp
= adapter
->bss_prio_tbl
[j
].bss_prio_cur
->priv
;
1111 if (((priv_tmp
->bss_mode
!= NL80211_IFTYPE_ADHOC
) &&
1112 !priv_tmp
->port_open
) ||
1113 (atomic_read(&priv_tmp
->wmm
.tx_pkts_queued
) == 0))
1116 if (adapter
->if_ops
.is_port_ready
&&
1117 !adapter
->if_ops
.is_port_ready(priv_tmp
))
1120 /* iterate over the WMM queues of the BSS */
1121 hqp
= &priv_tmp
->wmm
.highest_queued_prio
;
1122 for (i
= atomic_read(hqp
); i
>= LOW_PRIO_TID
; --i
) {
1124 spin_lock_irqsave(&priv_tmp
->wmm
.
1125 ra_list_spinlock
, flags_ra
);
1127 tid_ptr
= &(priv_tmp
)->wmm
.
1128 tid_tbl_ptr
[tos_to_tid
[i
]];
1130 /* iterate over receiver addresses */
1131 list_for_each_entry(ptr
, &tid_ptr
->ra_list
,
1134 if (!ptr
->tx_paused
&&
1135 !skb_queue_empty(&ptr
->skb_head
))
1136 /* holds both locks */
1140 spin_unlock_irqrestore(&priv_tmp
->wmm
.
1145 if (atomic_read(&priv_tmp
->wmm
.tx_pkts_queued
) != 0) {
1146 atomic_set(&priv_tmp
->wmm
.highest_queued_prio
,
1148 /* Iterate current private once more, since
1149 * there still exist packets in data queue
1153 atomic_set(&priv_tmp
->wmm
.highest_queued_prio
,
1161 /* holds ra_list_spinlock */
1162 if (atomic_read(hqp
) > i
)
1164 spin_unlock_irqrestore(&priv_tmp
->wmm
.ra_list_spinlock
, flags_ra
);
1167 *tid
= tos_to_tid
[i
];
1172 /* This functions rotates ra and bss lists so packets are picked round robin.
1174 * After a packet is successfully transmitted, rotate the ra list, so the ra
1175 * next to the one transmitted, will come first in the list. This way we pick
1176 * the ra' in a round robin fashion. Same applies to bss nodes of equal
1179 * Function also increments wmm.packets_out counter.
1181 void mwifiex_rotate_priolists(struct mwifiex_private
*priv
,
1182 struct mwifiex_ra_list_tbl
*ra
,
1185 struct mwifiex_adapter
*adapter
= priv
->adapter
;
1186 struct mwifiex_bss_prio_tbl
*tbl
= adapter
->bss_prio_tbl
;
1187 struct mwifiex_tid_tbl
*tid_ptr
= &priv
->wmm
.tid_tbl_ptr
[tid
];
1188 unsigned long flags
;
1190 spin_lock_irqsave(&tbl
[priv
->bss_priority
].bss_prio_lock
, flags
);
1192 * dirty trick: we remove 'head' temporarily and reinsert it after
1193 * curr bss node. imagine list to stay fixed while head is moved
1195 list_move(&tbl
[priv
->bss_priority
].bss_prio_head
,
1196 &tbl
[priv
->bss_priority
].bss_prio_cur
->list
);
1197 spin_unlock_irqrestore(&tbl
[priv
->bss_priority
].bss_prio_lock
, flags
);
1199 spin_lock_irqsave(&priv
->wmm
.ra_list_spinlock
, flags
);
1200 if (mwifiex_is_ralist_valid(priv
, ra
, tid
)) {
1201 priv
->wmm
.packets_out
[tid
]++;
1203 list_move(&tid_ptr
->ra_list
, &ra
->list
);
1205 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
, flags
);
1209 * This function checks if 11n aggregation is possible.
1212 mwifiex_is_11n_aggragation_possible(struct mwifiex_private
*priv
,
1213 struct mwifiex_ra_list_tbl
*ptr
,
1216 int count
= 0, total_size
= 0;
1217 struct sk_buff
*skb
, *tmp
;
1220 if (priv
->bss_role
== MWIFIEX_BSS_ROLE_UAP
&& priv
->ap_11n_enabled
&&
1221 ptr
->is_11n_enabled
)
1222 max_amsdu_size
= min_t(int, ptr
->max_amsdu
, max_buf_size
);
1224 max_amsdu_size
= max_buf_size
;
1226 skb_queue_walk_safe(&ptr
->skb_head
, skb
, tmp
) {
1227 total_size
+= skb
->len
;
1228 if (total_size
>= max_amsdu_size
)
1230 if (++count
>= MIN_NUM_AMSDU
)
1238 * This function sends a single packet to firmware for transmission.
1241 mwifiex_send_single_packet(struct mwifiex_private
*priv
,
1242 struct mwifiex_ra_list_tbl
*ptr
, int ptr_index
,
1243 unsigned long ra_list_flags
)
1244 __releases(&priv
->wmm
.ra_list_spinlock
)
1246 struct sk_buff
*skb
, *skb_next
;
1247 struct mwifiex_tx_param tx_param
;
1248 struct mwifiex_adapter
*adapter
= priv
->adapter
;
1249 struct mwifiex_txinfo
*tx_info
;
1251 if (skb_queue_empty(&ptr
->skb_head
)) {
1252 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
,
1254 mwifiex_dbg(adapter
, DATA
, "data: nothing to send\n");
1258 skb
= skb_dequeue(&ptr
->skb_head
);
1260 tx_info
= MWIFIEX_SKB_TXCB(skb
);
1261 mwifiex_dbg(adapter
, DATA
,
1262 "data: dequeuing the packet %p %p\n", ptr
, skb
);
1264 ptr
->total_pkt_count
--;
1266 if (!skb_queue_empty(&ptr
->skb_head
))
1267 skb_next
= skb_peek(&ptr
->skb_head
);
1271 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
, ra_list_flags
);
1273 tx_param
.next_pkt_len
= ((skb_next
) ? skb_next
->len
+
1274 sizeof(struct txpd
) : 0);
1276 if (mwifiex_process_tx(priv
, skb
, &tx_param
) == -EBUSY
) {
1277 /* Queue the packet back at the head */
1278 spin_lock_irqsave(&priv
->wmm
.ra_list_spinlock
, ra_list_flags
);
1280 if (!mwifiex_is_ralist_valid(priv
, ptr
, ptr_index
)) {
1281 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
,
1283 mwifiex_write_data_complete(adapter
, skb
, 0, -1);
1287 skb_queue_tail(&ptr
->skb_head
, skb
);
1289 ptr
->total_pkt_count
++;
1290 ptr
->ba_pkt_count
++;
1291 tx_info
->flags
|= MWIFIEX_BUF_FLAG_REQUEUED_PKT
;
1292 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
,
1295 mwifiex_rotate_priolists(priv
, ptr
, ptr_index
);
1296 atomic_dec(&priv
->wmm
.tx_pkts_queued
);
1301 * This function checks if the first packet in the given RA list
1302 * is already processed or not.
1305 mwifiex_is_ptr_processed(struct mwifiex_private
*priv
,
1306 struct mwifiex_ra_list_tbl
*ptr
)
1308 struct sk_buff
*skb
;
1309 struct mwifiex_txinfo
*tx_info
;
1311 if (skb_queue_empty(&ptr
->skb_head
))
1314 skb
= skb_peek(&ptr
->skb_head
);
1316 tx_info
= MWIFIEX_SKB_TXCB(skb
);
1317 if (tx_info
->flags
& MWIFIEX_BUF_FLAG_REQUEUED_PKT
)
1324 * This function sends a single processed packet to firmware for
1328 mwifiex_send_processed_packet(struct mwifiex_private
*priv
,
1329 struct mwifiex_ra_list_tbl
*ptr
, int ptr_index
,
1330 unsigned long ra_list_flags
)
1331 __releases(&priv
->wmm
.ra_list_spinlock
)
1333 struct mwifiex_tx_param tx_param
;
1334 struct mwifiex_adapter
*adapter
= priv
->adapter
;
1336 struct sk_buff
*skb
, *skb_next
;
1337 struct mwifiex_txinfo
*tx_info
;
1339 if (skb_queue_empty(&ptr
->skb_head
)) {
1340 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
,
1345 skb
= skb_dequeue(&ptr
->skb_head
);
1347 if (adapter
->data_sent
|| adapter
->tx_lock_flag
) {
1348 ptr
->total_pkt_count
--;
1349 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
,
1351 skb_queue_tail(&adapter
->tx_data_q
, skb
);
1352 atomic_dec(&priv
->wmm
.tx_pkts_queued
);
1353 atomic_inc(&adapter
->tx_queued
);
1357 if (!skb_queue_empty(&ptr
->skb_head
))
1358 skb_next
= skb_peek(&ptr
->skb_head
);
1362 tx_info
= MWIFIEX_SKB_TXCB(skb
);
1364 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
, ra_list_flags
);
1366 if (adapter
->iface_type
== MWIFIEX_USB
) {
1367 ret
= adapter
->if_ops
.host_to_card(adapter
, priv
->usb_port
,
1370 tx_param
.next_pkt_len
=
1371 ((skb_next
) ? skb_next
->len
+
1372 sizeof(struct txpd
) : 0);
1373 ret
= adapter
->if_ops
.host_to_card(adapter
, MWIFIEX_TYPE_DATA
,
1379 mwifiex_dbg(adapter
, ERROR
, "data: -EBUSY is returned\n");
1380 spin_lock_irqsave(&priv
->wmm
.ra_list_spinlock
, ra_list_flags
);
1382 if (!mwifiex_is_ralist_valid(priv
, ptr
, ptr_index
)) {
1383 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
,
1385 mwifiex_write_data_complete(adapter
, skb
, 0, -1);
1389 skb_queue_tail(&ptr
->skb_head
, skb
);
1391 tx_info
->flags
|= MWIFIEX_BUF_FLAG_REQUEUED_PKT
;
1392 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
,
1396 mwifiex_dbg(adapter
, ERROR
, "host_to_card failed: %#x\n", ret
);
1397 adapter
->dbg
.num_tx_host_to_card_failure
++;
1398 mwifiex_write_data_complete(adapter
, skb
, 0, ret
);
1403 mwifiex_write_data_complete(adapter
, skb
, 0, ret
);
1407 if (ret
!= -EBUSY
) {
1408 mwifiex_rotate_priolists(priv
, ptr
, ptr_index
);
1409 atomic_dec(&priv
->wmm
.tx_pkts_queued
);
1410 spin_lock_irqsave(&priv
->wmm
.ra_list_spinlock
, ra_list_flags
);
1411 ptr
->total_pkt_count
--;
1412 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
,
1418 * This function dequeues a packet from the highest priority list
1422 mwifiex_dequeue_tx_packet(struct mwifiex_adapter
*adapter
)
1424 struct mwifiex_ra_list_tbl
*ptr
;
1425 struct mwifiex_private
*priv
= NULL
;
1428 int tid_del
= 0, tid
= 0;
1429 unsigned long flags
;
1431 ptr
= mwifiex_wmm_get_highest_priolist_ptr(adapter
, &priv
, &ptr_index
);
1435 tid
= mwifiex_get_tid(ptr
);
1437 mwifiex_dbg(adapter
, DATA
, "data: tid=%d\n", tid
);
1439 spin_lock_irqsave(&priv
->wmm
.ra_list_spinlock
, flags
);
1440 if (!mwifiex_is_ralist_valid(priv
, ptr
, ptr_index
)) {
1441 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
, flags
);
1445 if (mwifiex_is_ptr_processed(priv
, ptr
)) {
1446 mwifiex_send_processed_packet(priv
, ptr
, ptr_index
, flags
);
1447 /* ra_list_spinlock has been freed in
1448 mwifiex_send_processed_packet() */
1452 if (!ptr
->is_11n_enabled
||
1454 priv
->wps
.session_enable
) {
1455 if (ptr
->is_11n_enabled
&&
1457 ptr
->amsdu_in_ampdu
&&
1458 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()
1466 mwifiex_send_single_packet(priv
, ptr
, ptr_index
, flags
);
1467 /* ra_list_spinlock has been freed in
1468 * mwifiex_send_single_packet()
1471 if (mwifiex_is_ampdu_allowed(priv
, ptr
, tid
) &&
1472 ptr
->ba_pkt_count
> ptr
->ba_packet_thr
) {
1473 if (mwifiex_space_avail_for_new_ba_stream(adapter
)) {
1474 mwifiex_create_ba_tbl(priv
, ptr
->ra
, tid
,
1475 BA_SETUP_INPROGRESS
);
1476 mwifiex_send_addba(priv
, tid
, ptr
->ra
);
1477 } else if (mwifiex_find_stream_to_delete
1478 (priv
, tid
, &tid_del
, ra
)) {
1479 mwifiex_create_ba_tbl(priv
, ptr
->ra
, tid
,
1480 BA_SETUP_INPROGRESS
);
1481 mwifiex_send_delba(priv
, tid_del
, ra
, 1);
1484 if (mwifiex_is_amsdu_allowed(priv
, tid
) &&
1485 mwifiex_is_11n_aggragation_possible(priv
, ptr
,
1486 adapter
->tx_buf_size
))
1487 mwifiex_11n_aggregate_pkt(priv
, ptr
, ptr_index
, flags
);
1488 /* ra_list_spinlock has been freed in
1489 mwifiex_11n_aggregate_pkt() */
1491 mwifiex_send_single_packet(priv
, ptr
, ptr_index
, flags
);
1492 /* ra_list_spinlock has been freed in
1493 mwifiex_send_single_packet() */
1498 void mwifiex_process_bypass_tx(struct mwifiex_adapter
*adapter
)
1500 struct mwifiex_tx_param tx_param
;
1501 struct sk_buff
*skb
;
1502 struct mwifiex_txinfo
*tx_info
;
1503 struct mwifiex_private
*priv
;
1506 if (adapter
->data_sent
|| adapter
->tx_lock_flag
)
1509 for (i
= 0; i
< adapter
->priv_num
; ++i
) {
1510 priv
= adapter
->priv
[i
];
1515 if (adapter
->if_ops
.is_port_ready
&&
1516 !adapter
->if_ops
.is_port_ready(priv
))
1519 if (skb_queue_empty(&priv
->bypass_txq
))
1522 skb
= skb_dequeue(&priv
->bypass_txq
);
1523 tx_info
= MWIFIEX_SKB_TXCB(skb
);
1525 /* no aggregation for bypass packets */
1526 tx_param
.next_pkt_len
= 0;
1528 if (mwifiex_process_tx(priv
, skb
, &tx_param
) == -EBUSY
) {
1529 skb_queue_head(&priv
->bypass_txq
, skb
);
1530 tx_info
->flags
|= MWIFIEX_BUF_FLAG_REQUEUED_PKT
;
1532 atomic_dec(&adapter
->bypass_tx_pending
);
1538 * This function transmits the highest priority packet awaiting in the
1542 mwifiex_wmm_process_tx(struct mwifiex_adapter
*adapter
)
1545 if (mwifiex_dequeue_tx_packet(adapter
))
1547 if (adapter
->iface_type
!= MWIFIEX_SDIO
) {
1548 if (adapter
->data_sent
||
1549 adapter
->tx_lock_flag
)
1552 if (atomic_read(&adapter
->tx_queued
) >=
1553 MWIFIEX_MAX_PKTS_TXQ
)
1556 } while (!mwifiex_wmm_lists_empty(adapter
));