2 * Marvell Wireless LAN device driver: WMM
4 * Copyright (C) 2011, 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 /* WMM information IE */
41 static const u8 wmm_info_ie
[] = { WLAN_EID_VENDOR_SPECIFIC
, 0x07,
42 0x00, 0x50, 0xf2, 0x02,
46 static const u8 wmm_aci_to_qidx_map
[] = { WMM_AC_BE
,
52 static u8 tos_to_tid
[] = {
53 /* TID DSCP_P2 DSCP_P1 DSCP_P0 WMM_AC */
54 0x01, /* 0 1 0 AC_BK */
55 0x02, /* 0 0 0 AC_BK */
56 0x00, /* 0 0 1 AC_BE */
57 0x03, /* 0 1 1 AC_BE */
58 0x04, /* 1 0 0 AC_VI */
59 0x05, /* 1 0 1 AC_VI */
60 0x06, /* 1 1 0 AC_VO */
61 0x07 /* 1 1 1 AC_VO */
65 * This table inverses the tos_to_tid operation to get a priority
66 * which is in sequential order, and can be compared.
67 * Use this to compare the priority of two different TIDs.
69 static u8 tos_to_tid_inv
[] = {
70 0x02, /* from tos_to_tid[2] = 0 */
71 0x00, /* from tos_to_tid[0] = 1 */
72 0x01, /* from tos_to_tid[1] = 2 */
79 static u8 ac_to_tid
[4][2] = { {1, 2}, {0, 3}, {4, 5}, {6, 7} };
82 * This function debug prints the priority parameters for a WMM AC.
85 mwifiex_wmm_ac_debug_print(const struct ieee_types_wmm_ac_parameters
*ac_param
)
87 const char *ac_str
[] = { "BK", "BE", "VI", "VO" };
89 pr_debug("info: WMM AC_%s: ACI=%d, ACM=%d, Aifsn=%d, "
90 "EcwMin=%d, EcwMax=%d, TxopLimit=%d\n",
91 ac_str
[wmm_aci_to_qidx_map
[(ac_param
->aci_aifsn_bitmap
92 & MWIFIEX_ACI
) >> 5]],
93 (ac_param
->aci_aifsn_bitmap
& MWIFIEX_ACI
) >> 5,
94 (ac_param
->aci_aifsn_bitmap
& MWIFIEX_ACM
) >> 4,
95 ac_param
->aci_aifsn_bitmap
& MWIFIEX_AIFSN
,
96 ac_param
->ecw_bitmap
& MWIFIEX_ECW_MIN
,
97 (ac_param
->ecw_bitmap
& MWIFIEX_ECW_MAX
) >> 4,
98 le16_to_cpu(ac_param
->tx_op_limit
));
102 * This function allocates a route address list.
104 * The function also initializes the list with the provided RA.
106 static struct mwifiex_ra_list_tbl
*
107 mwifiex_wmm_allocate_ralist_node(struct mwifiex_adapter
*adapter
, u8
*ra
)
109 struct mwifiex_ra_list_tbl
*ra_list
;
111 ra_list
= kzalloc(sizeof(struct mwifiex_ra_list_tbl
), GFP_ATOMIC
);
115 INIT_LIST_HEAD(&ra_list
->list
);
116 skb_queue_head_init(&ra_list
->skb_head
);
118 memcpy(ra_list
->ra
, ra
, ETH_ALEN
);
120 ra_list
->total_pkts_size
= 0;
122 dev_dbg(adapter
->dev
, "info: allocated ra_list %p\n", ra_list
);
127 /* This function returns random no between 16 and 32 to be used as threshold
128 * for no of packets after which BA setup is initiated.
130 static u8
mwifiex_get_random_ba_threshold(void)
133 struct timeval ba_tstamp
;
136 /* setup ba_packet_threshold here random number between
137 * [BA_SETUP_PACKET_OFFSET,
138 * BA_SETUP_PACKET_OFFSET+BA_SETUP_MAX_PACKET_THRESHOLD-1]
141 do_gettimeofday(&ba_tstamp
);
142 sec
= (ba_tstamp
.tv_sec
& 0xFFFF) + (ba_tstamp
.tv_sec
>> 16);
143 usec
= (ba_tstamp
.tv_usec
& 0xFFFF) + (ba_tstamp
.tv_usec
>> 16);
144 ba_threshold
= (((sec
<< 16) + usec
) % BA_SETUP_MAX_PACKET_THRESHOLD
)
145 + BA_SETUP_PACKET_OFFSET
;
151 * This function allocates and adds a RA list for all TIDs
155 mwifiex_ralist_add(struct mwifiex_private
*priv
, u8
*ra
)
158 struct mwifiex_ra_list_tbl
*ra_list
;
159 struct mwifiex_adapter
*adapter
= priv
->adapter
;
160 struct mwifiex_sta_node
*node
;
163 spin_lock_irqsave(&priv
->sta_list_spinlock
, flags
);
164 node
= mwifiex_get_sta_entry(priv
, ra
);
165 spin_unlock_irqrestore(&priv
->sta_list_spinlock
, flags
);
167 for (i
= 0; i
< MAX_NUM_TID
; ++i
) {
168 ra_list
= mwifiex_wmm_allocate_ralist_node(adapter
, ra
);
169 dev_dbg(adapter
->dev
, "info: created ra_list %p\n", ra_list
);
174 ra_list
->is_11n_enabled
= 0;
175 if (!mwifiex_queuing_ra_based(priv
)) {
176 ra_list
->is_11n_enabled
= IS_11N_ENABLED(priv
);
178 ra_list
->is_11n_enabled
=
179 mwifiex_is_sta_11n_enabled(priv
, node
);
180 if (ra_list
->is_11n_enabled
)
181 ra_list
->max_amsdu
= node
->max_amsdu
;
184 dev_dbg(adapter
->dev
, "data: ralist %p: is_11n_enabled=%d\n",
185 ra_list
, ra_list
->is_11n_enabled
);
187 if (ra_list
->is_11n_enabled
) {
188 ra_list
->pkt_count
= 0;
189 ra_list
->ba_packet_thr
=
190 mwifiex_get_random_ba_threshold();
192 list_add_tail(&ra_list
->list
,
193 &priv
->wmm
.tid_tbl_ptr
[i
].ra_list
);
195 if (!priv
->wmm
.tid_tbl_ptr
[i
].ra_list_curr
)
196 priv
->wmm
.tid_tbl_ptr
[i
].ra_list_curr
= ra_list
;
201 * This function sets the WMM queue priorities to their default values.
203 static void mwifiex_wmm_default_queue_priorities(struct mwifiex_private
*priv
)
205 /* Default queue priorities: VO->VI->BE->BK */
206 priv
->wmm
.queue_priority
[0] = WMM_AC_VO
;
207 priv
->wmm
.queue_priority
[1] = WMM_AC_VI
;
208 priv
->wmm
.queue_priority
[2] = WMM_AC_BE
;
209 priv
->wmm
.queue_priority
[3] = WMM_AC_BK
;
213 * This function map ACs to TIDs.
216 mwifiex_wmm_queue_priorities_tid(struct mwifiex_wmm_desc
*wmm
)
218 u8
*queue_priority
= wmm
->queue_priority
;
221 for (i
= 0; i
< 4; ++i
) {
222 tos_to_tid
[7 - (i
* 2)] = ac_to_tid
[queue_priority
[i
]][1];
223 tos_to_tid
[6 - (i
* 2)] = ac_to_tid
[queue_priority
[i
]][0];
226 for (i
= 0; i
< MAX_NUM_TID
; ++i
)
227 tos_to_tid_inv
[tos_to_tid
[i
]] = (u8
)i
;
229 atomic_set(&wmm
->highest_queued_prio
, HIGH_PRIO_TID
);
233 * This function initializes WMM priority queues.
236 mwifiex_wmm_setup_queue_priorities(struct mwifiex_private
*priv
,
237 struct ieee_types_wmm_parameter
*wmm_ie
)
239 u16 cw_min
, avg_back_off
, tmp
[4];
243 if (!wmm_ie
|| !priv
->wmm_enabled
) {
244 /* WMM is not enabled, just set the defaults and return */
245 mwifiex_wmm_default_queue_priorities(priv
);
249 dev_dbg(priv
->adapter
->dev
, "info: WMM Parameter IE: version=%d, "
250 "qos_info Parameter Set Count=%d, Reserved=%#x\n",
251 wmm_ie
->vend_hdr
.version
, wmm_ie
->qos_info_bitmap
&
252 IEEE80211_WMM_IE_AP_QOSINFO_PARAM_SET_CNT_MASK
,
255 for (num_ac
= 0; num_ac
< ARRAY_SIZE(wmm_ie
->ac_params
); num_ac
++) {
256 u8 ecw
= wmm_ie
->ac_params
[num_ac
].ecw_bitmap
;
257 u8 aci_aifsn
= wmm_ie
->ac_params
[num_ac
].aci_aifsn_bitmap
;
258 cw_min
= (1 << (ecw
& MWIFIEX_ECW_MIN
)) - 1;
259 avg_back_off
= (cw_min
>> 1) + (aci_aifsn
& MWIFIEX_AIFSN
);
261 ac_idx
= wmm_aci_to_qidx_map
[(aci_aifsn
& MWIFIEX_ACI
) >> 5];
262 priv
->wmm
.queue_priority
[ac_idx
] = ac_idx
;
263 tmp
[ac_idx
] = avg_back_off
;
265 dev_dbg(priv
->adapter
->dev
,
266 "info: WMM: CWmax=%d CWmin=%d Avg Back-off=%d\n",
267 (1 << ((ecw
& MWIFIEX_ECW_MAX
) >> 4)) - 1,
268 cw_min
, avg_back_off
);
269 mwifiex_wmm_ac_debug_print(&wmm_ie
->ac_params
[num_ac
]);
273 for (i
= 0; i
< num_ac
; i
++) {
274 for (j
= 1; j
< num_ac
- i
; j
++) {
275 if (tmp
[j
- 1] > tmp
[j
]) {
276 swap(tmp
[j
- 1], tmp
[j
]);
277 swap(priv
->wmm
.queue_priority
[j
- 1],
278 priv
->wmm
.queue_priority
[j
]);
279 } else if (tmp
[j
- 1] == tmp
[j
]) {
280 if (priv
->wmm
.queue_priority
[j
- 1]
281 < priv
->wmm
.queue_priority
[j
])
282 swap(priv
->wmm
.queue_priority
[j
- 1],
283 priv
->wmm
.queue_priority
[j
]);
288 mwifiex_wmm_queue_priorities_tid(&priv
->wmm
);
292 * This function evaluates whether or not an AC is to be downgraded.
294 * In case the AC is not enabled, the highest AC is returned that is
295 * enabled and does not require admission control.
297 static enum mwifiex_wmm_ac_e
298 mwifiex_wmm_eval_downgrade_ac(struct mwifiex_private
*priv
,
299 enum mwifiex_wmm_ac_e eval_ac
)
302 enum mwifiex_wmm_ac_e ret_ac
;
303 struct mwifiex_wmm_ac_status
*ac_status
;
305 ac_status
= &priv
->wmm
.ac_status
[eval_ac
];
307 if (!ac_status
->disabled
)
308 /* Okay to use this AC, its enabled */
311 /* Setup a default return value of the lowest priority */
315 * Find the highest AC that is enabled and does not require
316 * admission control. The spec disallows downgrading to an AC,
317 * which is enabled due to a completed admission control.
318 * Unadmitted traffic is not to be sent on an AC with admitted
321 for (down_ac
= WMM_AC_BK
; down_ac
< eval_ac
; down_ac
++) {
322 ac_status
= &priv
->wmm
.ac_status
[down_ac
];
324 if (!ac_status
->disabled
&& !ac_status
->flow_required
)
325 /* AC is enabled and does not require admission
327 ret_ac
= (enum mwifiex_wmm_ac_e
) down_ac
;
334 * This function downgrades WMM priority queue.
337 mwifiex_wmm_setup_ac_downgrade(struct mwifiex_private
*priv
)
341 dev_dbg(priv
->adapter
->dev
, "info: WMM: AC Priorities:"
342 "BK(0), BE(1), VI(2), VO(3)\n");
344 if (!priv
->wmm_enabled
) {
345 /* WMM is not enabled, default priorities */
346 for (ac_val
= WMM_AC_BK
; ac_val
<= WMM_AC_VO
; ac_val
++)
347 priv
->wmm
.ac_down_graded_vals
[ac_val
] =
348 (enum mwifiex_wmm_ac_e
) ac_val
;
350 for (ac_val
= WMM_AC_BK
; ac_val
<= WMM_AC_VO
; ac_val
++) {
351 priv
->wmm
.ac_down_graded_vals
[ac_val
]
352 = mwifiex_wmm_eval_downgrade_ac(priv
,
353 (enum mwifiex_wmm_ac_e
) ac_val
);
354 dev_dbg(priv
->adapter
->dev
,
355 "info: WMM: AC PRIO %d maps to %d\n",
356 ac_val
, priv
->wmm
.ac_down_graded_vals
[ac_val
]);
362 * This function converts the IP TOS field to an WMM AC
365 static enum mwifiex_wmm_ac_e
366 mwifiex_wmm_convert_tos_to_ac(struct mwifiex_adapter
*adapter
, u32 tos
)
368 /* Map of TOS UP values to WMM AC */
369 const enum mwifiex_wmm_ac_e tos_to_ac
[] = { WMM_AC_BE
,
379 if (tos
>= ARRAY_SIZE(tos_to_ac
))
382 return tos_to_ac
[tos
];
386 * This function evaluates a given TID and downgrades it to a lower
387 * TID if the WMM Parameter IE received from the AP indicates that the
388 * AP is disabled (due to call admission control (ACM bit). Mapping
389 * of TID to AC is taken care of internally.
392 mwifiex_wmm_downgrade_tid(struct mwifiex_private
*priv
, u32 tid
)
394 enum mwifiex_wmm_ac_e ac
, ac_down
;
397 ac
= mwifiex_wmm_convert_tos_to_ac(priv
->adapter
, tid
);
398 ac_down
= priv
->wmm
.ac_down_graded_vals
[ac
];
400 /* Send the index to tid array, picking from the array will be
401 * taken care by dequeuing function
403 new_tid
= ac_to_tid
[ac_down
][tid
% 2];
409 * This function initializes the WMM state information and the
410 * WMM data path queues.
413 mwifiex_wmm_init(struct mwifiex_adapter
*adapter
)
416 struct mwifiex_private
*priv
;
418 for (j
= 0; j
< adapter
->priv_num
; ++j
) {
419 priv
= adapter
->priv
[j
];
423 for (i
= 0; i
< MAX_NUM_TID
; ++i
) {
424 priv
->aggr_prio_tbl
[i
].amsdu
= tos_to_tid_inv
[i
];
425 priv
->aggr_prio_tbl
[i
].ampdu_ap
= tos_to_tid_inv
[i
];
426 priv
->aggr_prio_tbl
[i
].ampdu_user
= tos_to_tid_inv
[i
];
427 priv
->wmm
.tid_tbl_ptr
[i
].ra_list_curr
= NULL
;
430 priv
->aggr_prio_tbl
[6].amsdu
431 = priv
->aggr_prio_tbl
[6].ampdu_ap
432 = priv
->aggr_prio_tbl
[6].ampdu_user
433 = BA_STREAM_NOT_ALLOWED
;
435 priv
->aggr_prio_tbl
[7].amsdu
= priv
->aggr_prio_tbl
[7].ampdu_ap
436 = priv
->aggr_prio_tbl
[7].ampdu_user
437 = BA_STREAM_NOT_ALLOWED
;
439 priv
->add_ba_param
.timeout
= MWIFIEX_DEFAULT_BLOCK_ACK_TIMEOUT
;
440 priv
->add_ba_param
.tx_win_size
= MWIFIEX_AMPDU_DEF_TXWINSIZE
;
441 priv
->add_ba_param
.rx_win_size
= MWIFIEX_AMPDU_DEF_RXWINSIZE
;
443 mwifiex_reset_11n_rx_seq_num(priv
);
445 atomic_set(&priv
->wmm
.tx_pkts_queued
, 0);
446 atomic_set(&priv
->wmm
.highest_queued_prio
, HIGH_PRIO_TID
);
451 * This function checks if WMM Tx queue is empty.
454 mwifiex_wmm_lists_empty(struct mwifiex_adapter
*adapter
)
457 struct mwifiex_private
*priv
;
459 for (i
= 0; i
< adapter
->priv_num
; ++i
) {
460 priv
= adapter
->priv
[i
];
461 if (priv
&& atomic_read(&priv
->wmm
.tx_pkts_queued
))
469 * This function deletes all packets in an RA list node.
471 * The packet sent completion callback handler are called with
472 * status failure, after they are dequeued to ensure proper
473 * cleanup. The RA list node itself is freed at the end.
476 mwifiex_wmm_del_pkts_in_ralist_node(struct mwifiex_private
*priv
,
477 struct mwifiex_ra_list_tbl
*ra_list
)
479 struct mwifiex_adapter
*adapter
= priv
->adapter
;
480 struct sk_buff
*skb
, *tmp
;
482 skb_queue_walk_safe(&ra_list
->skb_head
, skb
, tmp
)
483 mwifiex_write_data_complete(adapter
, skb
, 0, -1);
487 * This function deletes all packets in an RA list.
489 * Each nodes in the RA list are freed individually first, and then
490 * the RA list itself is freed.
493 mwifiex_wmm_del_pkts_in_ralist(struct mwifiex_private
*priv
,
494 struct list_head
*ra_list_head
)
496 struct mwifiex_ra_list_tbl
*ra_list
;
498 list_for_each_entry(ra_list
, ra_list_head
, list
)
499 mwifiex_wmm_del_pkts_in_ralist_node(priv
, ra_list
);
503 * This function deletes all packets in all RA lists.
505 static void mwifiex_wmm_cleanup_queues(struct mwifiex_private
*priv
)
509 for (i
= 0; i
< MAX_NUM_TID
; i
++)
510 mwifiex_wmm_del_pkts_in_ralist(priv
, &priv
->wmm
.tid_tbl_ptr
[i
].
513 atomic_set(&priv
->wmm
.tx_pkts_queued
, 0);
514 atomic_set(&priv
->wmm
.highest_queued_prio
, HIGH_PRIO_TID
);
518 * This function deletes all route addresses from all RA lists.
520 static void mwifiex_wmm_delete_all_ralist(struct mwifiex_private
*priv
)
522 struct mwifiex_ra_list_tbl
*ra_list
, *tmp_node
;
525 for (i
= 0; i
< MAX_NUM_TID
; ++i
) {
526 dev_dbg(priv
->adapter
->dev
,
527 "info: ra_list: freeing buf for tid %d\n", i
);
528 list_for_each_entry_safe(ra_list
, tmp_node
,
529 &priv
->wmm
.tid_tbl_ptr
[i
].ra_list
,
531 list_del(&ra_list
->list
);
535 INIT_LIST_HEAD(&priv
->wmm
.tid_tbl_ptr
[i
].ra_list
);
537 priv
->wmm
.tid_tbl_ptr
[i
].ra_list_curr
= NULL
;
542 * This function cleans up the Tx and Rx queues.
545 * - All packets in RA lists
546 * - All entries in Rx reorder table
547 * - All entries in Tx BA stream table
548 * - MPA buffer (if required)
552 mwifiex_clean_txrx(struct mwifiex_private
*priv
)
556 mwifiex_11n_cleanup_reorder_tbl(priv
);
557 spin_lock_irqsave(&priv
->wmm
.ra_list_spinlock
, flags
);
559 mwifiex_wmm_cleanup_queues(priv
);
560 mwifiex_11n_delete_all_tx_ba_stream_tbl(priv
);
562 if (priv
->adapter
->if_ops
.cleanup_mpa_buf
)
563 priv
->adapter
->if_ops
.cleanup_mpa_buf(priv
->adapter
);
565 mwifiex_wmm_delete_all_ralist(priv
);
566 memcpy(tos_to_tid
, ac_to_tid
, sizeof(tos_to_tid
));
568 if (priv
->adapter
->if_ops
.clean_pcie_ring
)
569 priv
->adapter
->if_ops
.clean_pcie_ring(priv
->adapter
);
570 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
, flags
);
574 * This function retrieves a particular RA list node, matching with the
575 * given TID and RA address.
577 static struct mwifiex_ra_list_tbl
*
578 mwifiex_wmm_get_ralist_node(struct mwifiex_private
*priv
, u8 tid
,
581 struct mwifiex_ra_list_tbl
*ra_list
;
583 list_for_each_entry(ra_list
, &priv
->wmm
.tid_tbl_ptr
[tid
].ra_list
,
585 if (!memcmp(ra_list
->ra
, ra_addr
, ETH_ALEN
))
593 * This function retrieves an RA list node for a given TID and
596 * If no such node is found, a new node is added first and then
599 static struct mwifiex_ra_list_tbl
*
600 mwifiex_wmm_get_queue_raptr(struct mwifiex_private
*priv
, u8 tid
, u8
*ra_addr
)
602 struct mwifiex_ra_list_tbl
*ra_list
;
604 ra_list
= mwifiex_wmm_get_ralist_node(priv
, tid
, ra_addr
);
607 mwifiex_ralist_add(priv
, ra_addr
);
609 return mwifiex_wmm_get_ralist_node(priv
, tid
, ra_addr
);
613 * This function checks if a particular RA list node exists in a given TID
617 mwifiex_is_ralist_valid(struct mwifiex_private
*priv
,
618 struct mwifiex_ra_list_tbl
*ra_list
, int ptr_index
)
620 struct mwifiex_ra_list_tbl
*rlist
;
622 list_for_each_entry(rlist
, &priv
->wmm
.tid_tbl_ptr
[ptr_index
].ra_list
,
624 if (rlist
== ra_list
)
632 * This function adds a packet to WMM queue.
634 * In disconnected state the packet is immediately dropped and the
635 * packet send completion callback is called with status failure.
637 * Otherwise, the correct RA list node is located and the packet
638 * is queued at the list tail.
641 mwifiex_wmm_add_buf_txqueue(struct mwifiex_private
*priv
,
644 struct mwifiex_adapter
*adapter
= priv
->adapter
;
646 struct mwifiex_ra_list_tbl
*ra_list
;
647 u8 ra
[ETH_ALEN
], tid_down
;
650 if (!priv
->media_connected
&& !mwifiex_is_skb_mgmt_frame(skb
)) {
651 dev_dbg(adapter
->dev
, "data: drop packet in disconnect\n");
652 mwifiex_write_data_complete(adapter
, skb
, 0, -1);
658 spin_lock_irqsave(&priv
->wmm
.ra_list_spinlock
, flags
);
660 tid_down
= mwifiex_wmm_downgrade_tid(priv
, tid
);
662 /* In case of infra as we have already created the list during
663 association we just don't have to call get_queue_raptr, we will
664 have only 1 raptr for a tid in case of infra */
665 if (!mwifiex_queuing_ra_based(priv
) &&
666 !mwifiex_is_skb_mgmt_frame(skb
)) {
667 if (!list_empty(&priv
->wmm
.tid_tbl_ptr
[tid_down
].ra_list
))
668 ra_list
= list_first_entry(
669 &priv
->wmm
.tid_tbl_ptr
[tid_down
].ra_list
,
670 struct mwifiex_ra_list_tbl
, list
);
674 memcpy(ra
, skb
->data
, ETH_ALEN
);
675 if (ra
[0] & 0x01 || mwifiex_is_skb_mgmt_frame(skb
))
676 memset(ra
, 0xff, ETH_ALEN
);
677 ra_list
= mwifiex_wmm_get_queue_raptr(priv
, tid_down
, ra
);
681 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
, flags
);
682 mwifiex_write_data_complete(adapter
, skb
, 0, -1);
686 skb_queue_tail(&ra_list
->skb_head
, skb
);
688 ra_list
->total_pkts_size
+= skb
->len
;
689 ra_list
->pkt_count
++;
691 atomic_inc(&priv
->wmm
.tx_pkts_queued
);
693 if (atomic_read(&priv
->wmm
.highest_queued_prio
) <
694 tos_to_tid_inv
[tid_down
])
695 atomic_set(&priv
->wmm
.highest_queued_prio
,
696 tos_to_tid_inv
[tid_down
]);
698 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
, flags
);
702 * This function processes the get WMM status command response from firmware.
704 * The response may contain multiple TLVs -
705 * - AC Queue status TLVs
706 * - Current WMM Parameter IE TLV
707 * - Admission Control action frame TLVs
709 * This function parses the TLVs and then calls further specific functions
710 * to process any changes in the queue prioritize or state.
712 int mwifiex_ret_wmm_get_status(struct mwifiex_private
*priv
,
713 const struct host_cmd_ds_command
*resp
)
715 u8
*curr
= (u8
*) &resp
->params
.get_wmm_status
;
716 uint16_t resp_len
= le16_to_cpu(resp
->size
), tlv_len
;
719 struct mwifiex_ie_types_data
*tlv_hdr
;
720 struct mwifiex_ie_types_wmm_queue_status
*tlv_wmm_qstatus
;
721 struct ieee_types_wmm_parameter
*wmm_param_ie
= NULL
;
722 struct mwifiex_wmm_ac_status
*ac_status
;
724 dev_dbg(priv
->adapter
->dev
, "info: WMM: WMM_GET_STATUS cmdresp received: %d\n",
727 while ((resp_len
>= sizeof(tlv_hdr
->header
)) && valid
) {
728 tlv_hdr
= (struct mwifiex_ie_types_data
*) curr
;
729 tlv_len
= le16_to_cpu(tlv_hdr
->header
.len
);
731 switch (le16_to_cpu(tlv_hdr
->header
.type
)) {
732 case TLV_TYPE_WMMQSTATUS
:
734 (struct mwifiex_ie_types_wmm_queue_status
*)
736 dev_dbg(priv
->adapter
->dev
,
737 "info: CMD_RESP: WMM_GET_STATUS:"
738 " QSTATUS TLV: %d, %d, %d\n",
739 tlv_wmm_qstatus
->queue_index
,
740 tlv_wmm_qstatus
->flow_required
,
741 tlv_wmm_qstatus
->disabled
);
743 ac_status
= &priv
->wmm
.ac_status
[tlv_wmm_qstatus
->
745 ac_status
->disabled
= tlv_wmm_qstatus
->disabled
;
746 ac_status
->flow_required
=
747 tlv_wmm_qstatus
->flow_required
;
748 ac_status
->flow_created
= tlv_wmm_qstatus
->flow_created
;
751 case WLAN_EID_VENDOR_SPECIFIC
:
753 * Point the regular IEEE IE 2 bytes into the Marvell IE
754 * and setup the IEEE IE type and length byte fields
758 (struct ieee_types_wmm_parameter
*) (curr
+
760 wmm_param_ie
->vend_hdr
.len
= (u8
) tlv_len
;
761 wmm_param_ie
->vend_hdr
.element_id
=
762 WLAN_EID_VENDOR_SPECIFIC
;
764 dev_dbg(priv
->adapter
->dev
,
765 "info: CMD_RESP: WMM_GET_STATUS:"
766 " WMM Parameter Set Count: %d\n",
767 wmm_param_ie
->qos_info_bitmap
&
768 IEEE80211_WMM_IE_AP_QOSINFO_PARAM_SET_CNT_MASK
);
770 memcpy((u8
*) &priv
->curr_bss_params
.bss_descriptor
.
771 wmm_ie
, wmm_param_ie
,
772 wmm_param_ie
->vend_hdr
.len
+ 2);
781 curr
+= (tlv_len
+ sizeof(tlv_hdr
->header
));
782 resp_len
-= (tlv_len
+ sizeof(tlv_hdr
->header
));
785 mwifiex_wmm_setup_queue_priorities(priv
, wmm_param_ie
);
786 mwifiex_wmm_setup_ac_downgrade(priv
);
792 * Callback handler from the command module to allow insertion of a WMM TLV.
794 * If the BSS we are associating to supports WMM, this function adds the
795 * required WMM Information IE to the association request command buffer in
796 * the form of a Marvell extended IEEE IE.
799 mwifiex_wmm_process_association_req(struct mwifiex_private
*priv
,
801 struct ieee_types_wmm_parameter
*wmm_ie
,
802 struct ieee80211_ht_cap
*ht_cap
)
804 struct mwifiex_ie_types_wmm_param_set
*wmm_tlv
;
816 dev_dbg(priv
->adapter
->dev
,
817 "info: WMM: process assoc req: bss->wmm_ie=%#x\n",
818 wmm_ie
->vend_hdr
.element_id
);
820 if ((priv
->wmm_required
||
821 (ht_cap
&& (priv
->adapter
->config_bands
& BAND_GN
||
822 priv
->adapter
->config_bands
& BAND_AN
))) &&
823 wmm_ie
->vend_hdr
.element_id
== WLAN_EID_VENDOR_SPECIFIC
) {
824 wmm_tlv
= (struct mwifiex_ie_types_wmm_param_set
*) *assoc_buf
;
825 wmm_tlv
->header
.type
= cpu_to_le16((u16
) wmm_info_ie
[0]);
826 wmm_tlv
->header
.len
= cpu_to_le16((u16
) wmm_info_ie
[1]);
827 memcpy(wmm_tlv
->wmm_ie
, &wmm_info_ie
[2],
828 le16_to_cpu(wmm_tlv
->header
.len
));
829 if (wmm_ie
->qos_info_bitmap
& IEEE80211_WMM_IE_AP_QOSINFO_UAPSD
)
830 memcpy((u8
*) (wmm_tlv
->wmm_ie
831 + le16_to_cpu(wmm_tlv
->header
.len
)
832 - sizeof(priv
->wmm_qosinfo
)),
833 &priv
->wmm_qosinfo
, sizeof(priv
->wmm_qosinfo
));
835 ret_len
= sizeof(wmm_tlv
->header
)
836 + le16_to_cpu(wmm_tlv
->header
.len
);
838 *assoc_buf
+= ret_len
;
845 * This function computes the time delay in the driver queues for a
848 * When the packet is received at the OS/Driver interface, the current
849 * time is set in the packet structure. The difference between the present
850 * time and that received time is computed in this function and limited
851 * based on pre-compiled limits in the driver.
854 mwifiex_wmm_compute_drv_pkt_delay(struct mwifiex_private
*priv
,
855 const struct sk_buff
*skb
)
858 struct timeval out_tstamp
, in_tstamp
;
861 do_gettimeofday(&out_tstamp
);
862 in_tstamp
= ktime_to_timeval(skb
->tstamp
);
864 queue_delay
= (out_tstamp
.tv_sec
- in_tstamp
.tv_sec
) * 1000;
865 queue_delay
+= (out_tstamp
.tv_usec
- in_tstamp
.tv_usec
) / 1000;
868 * Queue delay is passed as a uint8 in units of 2ms (ms shifted
869 * by 1). Min value (other than 0) is therefore 2ms, max is 510ms.
871 * Pass max value if queue_delay is beyond the uint8 range
873 ret_val
= (u8
) (min(queue_delay
, priv
->wmm
.drv_pkt_delay_max
) >> 1);
875 dev_dbg(priv
->adapter
->dev
, "data: WMM: Pkt Delay: %d ms,"
876 " %d ms sent to FW\n", queue_delay
, ret_val
);
882 * This function retrieves the highest priority RA list table pointer.
884 static struct mwifiex_ra_list_tbl
*
885 mwifiex_wmm_get_highest_priolist_ptr(struct mwifiex_adapter
*adapter
,
886 struct mwifiex_private
**priv
, int *tid
)
888 struct mwifiex_private
*priv_tmp
;
889 struct mwifiex_ra_list_tbl
*ptr
, *head
;
890 struct mwifiex_bss_prio_node
*bssprio_node
, *bssprio_head
;
891 struct mwifiex_tid_tbl
*tid_ptr
;
897 for (j
= adapter
->priv_num
- 1; j
>= 0; --j
) {
898 spin_lock_irqsave(&adapter
->bss_prio_tbl
[j
].bss_prio_lock
,
900 is_list_empty
= list_empty(&adapter
->bss_prio_tbl
[j
]
902 spin_unlock_irqrestore(&adapter
->bss_prio_tbl
[j
].bss_prio_lock
,
907 if (adapter
->bss_prio_tbl
[j
].bss_prio_cur
==
908 (struct mwifiex_bss_prio_node
*)
909 &adapter
->bss_prio_tbl
[j
].bss_prio_head
) {
910 adapter
->bss_prio_tbl
[j
].bss_prio_cur
=
911 list_first_entry(&adapter
->bss_prio_tbl
[j
]
913 struct mwifiex_bss_prio_node
,
917 bssprio_node
= adapter
->bss_prio_tbl
[j
].bss_prio_cur
;
918 bssprio_head
= bssprio_node
;
921 priv_tmp
= bssprio_node
->priv
;
922 hqp
= &priv_tmp
->wmm
.highest_queued_prio
;
924 for (i
= atomic_read(hqp
); i
>= LOW_PRIO_TID
; --i
) {
926 tid_ptr
= &(priv_tmp
)->wmm
.
927 tid_tbl_ptr
[tos_to_tid
[i
]];
929 /* For non-STA ra_list_curr may be NULL */
930 if (!tid_ptr
->ra_list_curr
)
933 spin_lock_irqsave(&tid_ptr
->tid_tbl_lock
,
936 list_empty(&adapter
->bss_prio_tbl
[j
]
938 spin_unlock_irqrestore(&tid_ptr
->tid_tbl_lock
,
944 * Always choose the next ra we transmitted
945 * last time, this way we pick the ra's in
946 * round robin fashion.
948 ptr
= list_first_entry(
949 &tid_ptr
->ra_list_curr
->list
,
950 struct mwifiex_ra_list_tbl
,
954 if (ptr
== (struct mwifiex_ra_list_tbl
*)
957 ptr
= list_first_entry(&ptr
->list
,
958 struct mwifiex_ra_list_tbl
, list
);
964 skb_queue_empty(&ptr
->skb_head
);
970 ptr
= list_first_entry(&ptr
->list
,
971 struct mwifiex_ra_list_tbl
,
974 (struct mwifiex_ra_list_tbl
*)
976 ptr
= list_first_entry(
978 struct mwifiex_ra_list_tbl
,
980 } while (ptr
!= head
);
983 /* No packet at any TID for this priv. Mark as such
984 * to skip checking TIDs for this priv (until pkt is
987 atomic_set(hqp
, NO_PKT_PRIO_TID
);
989 /* Get next bss priority node */
990 bssprio_node
= list_first_entry(&bssprio_node
->list
,
991 struct mwifiex_bss_prio_node
,
995 (struct mwifiex_bss_prio_node
*)
996 &adapter
->bss_prio_tbl
[j
].bss_prio_head
)
997 /* Get next bss priority node */
998 bssprio_node
= list_first_entry(
1000 struct mwifiex_bss_prio_node
,
1002 } while (bssprio_node
!= bssprio_head
);
1007 spin_lock_irqsave(&priv_tmp
->wmm
.ra_list_spinlock
, flags
);
1008 if (atomic_read(hqp
) > i
)
1010 spin_unlock_irqrestore(&priv_tmp
->wmm
.ra_list_spinlock
, flags
);
1013 *tid
= tos_to_tid
[i
];
1019 * This function checks if 11n aggregation is possible.
1022 mwifiex_is_11n_aggragation_possible(struct mwifiex_private
*priv
,
1023 struct mwifiex_ra_list_tbl
*ptr
,
1026 int count
= 0, total_size
= 0;
1027 struct sk_buff
*skb
, *tmp
;
1030 if (priv
->bss_role
== MWIFIEX_BSS_ROLE_UAP
&& priv
->ap_11n_enabled
&&
1031 ptr
->is_11n_enabled
)
1032 max_amsdu_size
= min_t(int, ptr
->max_amsdu
, max_buf_size
);
1034 max_amsdu_size
= max_buf_size
;
1036 skb_queue_walk_safe(&ptr
->skb_head
, skb
, tmp
) {
1037 total_size
+= skb
->len
;
1038 if (total_size
>= max_amsdu_size
)
1040 if (++count
>= MIN_NUM_AMSDU
)
1048 * This function sends a single packet to firmware for transmission.
1051 mwifiex_send_single_packet(struct mwifiex_private
*priv
,
1052 struct mwifiex_ra_list_tbl
*ptr
, int ptr_index
,
1053 unsigned long ra_list_flags
)
1054 __releases(&priv
->wmm
.ra_list_spinlock
)
1056 struct sk_buff
*skb
, *skb_next
;
1057 struct mwifiex_tx_param tx_param
;
1058 struct mwifiex_adapter
*adapter
= priv
->adapter
;
1059 struct mwifiex_txinfo
*tx_info
;
1061 if (skb_queue_empty(&ptr
->skb_head
)) {
1062 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
,
1064 dev_dbg(adapter
->dev
, "data: nothing to send\n");
1068 skb
= skb_dequeue(&ptr
->skb_head
);
1070 tx_info
= MWIFIEX_SKB_TXCB(skb
);
1071 dev_dbg(adapter
->dev
, "data: dequeuing the packet %p %p\n", ptr
, skb
);
1073 ptr
->total_pkts_size
-= skb
->len
;
1075 if (!skb_queue_empty(&ptr
->skb_head
))
1076 skb_next
= skb_peek(&ptr
->skb_head
);
1080 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
, ra_list_flags
);
1082 tx_param
.next_pkt_len
= ((skb_next
) ? skb_next
->len
+
1083 sizeof(struct txpd
) : 0);
1085 if (mwifiex_process_tx(priv
, skb
, &tx_param
) == -EBUSY
) {
1086 /* Queue the packet back at the head */
1087 spin_lock_irqsave(&priv
->wmm
.ra_list_spinlock
, ra_list_flags
);
1089 if (!mwifiex_is_ralist_valid(priv
, ptr
, ptr_index
)) {
1090 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
,
1092 mwifiex_write_data_complete(adapter
, skb
, 0, -1);
1096 skb_queue_tail(&ptr
->skb_head
, skb
);
1098 ptr
->total_pkts_size
+= skb
->len
;
1100 tx_info
->flags
|= MWIFIEX_BUF_FLAG_REQUEUED_PKT
;
1101 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
,
1104 spin_lock_irqsave(&priv
->wmm
.ra_list_spinlock
, ra_list_flags
);
1105 if (mwifiex_is_ralist_valid(priv
, ptr
, ptr_index
)) {
1106 priv
->wmm
.packets_out
[ptr_index
]++;
1107 priv
->wmm
.tid_tbl_ptr
[ptr_index
].ra_list_curr
= ptr
;
1109 adapter
->bss_prio_tbl
[priv
->bss_priority
].bss_prio_cur
=
1111 &adapter
->bss_prio_tbl
[priv
->bss_priority
]
1112 .bss_prio_cur
->list
,
1113 struct mwifiex_bss_prio_node
,
1115 atomic_dec(&priv
->wmm
.tx_pkts_queued
);
1116 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
,
1122 * This function checks if the first packet in the given RA list
1123 * is already processed or not.
1126 mwifiex_is_ptr_processed(struct mwifiex_private
*priv
,
1127 struct mwifiex_ra_list_tbl
*ptr
)
1129 struct sk_buff
*skb
;
1130 struct mwifiex_txinfo
*tx_info
;
1132 if (skb_queue_empty(&ptr
->skb_head
))
1135 skb
= skb_peek(&ptr
->skb_head
);
1137 tx_info
= MWIFIEX_SKB_TXCB(skb
);
1138 if (tx_info
->flags
& MWIFIEX_BUF_FLAG_REQUEUED_PKT
)
1145 * This function sends a single processed packet to firmware for
1149 mwifiex_send_processed_packet(struct mwifiex_private
*priv
,
1150 struct mwifiex_ra_list_tbl
*ptr
, int ptr_index
,
1151 unsigned long ra_list_flags
)
1152 __releases(&priv
->wmm
.ra_list_spinlock
)
1154 struct mwifiex_tx_param tx_param
;
1155 struct mwifiex_adapter
*adapter
= priv
->adapter
;
1157 struct sk_buff
*skb
, *skb_next
;
1158 struct mwifiex_txinfo
*tx_info
;
1160 if (skb_queue_empty(&ptr
->skb_head
)) {
1161 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
,
1166 skb
= skb_dequeue(&ptr
->skb_head
);
1168 if (!skb_queue_empty(&ptr
->skb_head
))
1169 skb_next
= skb_peek(&ptr
->skb_head
);
1173 tx_info
= MWIFIEX_SKB_TXCB(skb
);
1175 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
, ra_list_flags
);
1177 if (adapter
->iface_type
== MWIFIEX_USB
) {
1178 adapter
->data_sent
= true;
1179 ret
= adapter
->if_ops
.host_to_card(adapter
, MWIFIEX_USB_EP_DATA
,
1182 tx_param
.next_pkt_len
=
1183 ((skb_next
) ? skb_next
->len
+
1184 sizeof(struct txpd
) : 0);
1185 ret
= adapter
->if_ops
.host_to_card(adapter
, MWIFIEX_TYPE_DATA
,
1191 dev_dbg(adapter
->dev
, "data: -EBUSY is returned\n");
1192 spin_lock_irqsave(&priv
->wmm
.ra_list_spinlock
, ra_list_flags
);
1194 if (!mwifiex_is_ralist_valid(priv
, ptr
, ptr_index
)) {
1195 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
,
1197 mwifiex_write_data_complete(adapter
, skb
, 0, -1);
1201 skb_queue_tail(&ptr
->skb_head
, skb
);
1203 tx_info
->flags
|= MWIFIEX_BUF_FLAG_REQUEUED_PKT
;
1204 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
,
1208 if (adapter
->iface_type
!= MWIFIEX_PCIE
)
1209 adapter
->data_sent
= false;
1210 dev_err(adapter
->dev
, "host_to_card failed: %#x\n", ret
);
1211 adapter
->dbg
.num_tx_host_to_card_failure
++;
1212 mwifiex_write_data_complete(adapter
, skb
, 0, ret
);
1215 if (adapter
->iface_type
!= MWIFIEX_PCIE
)
1216 adapter
->data_sent
= false;
1220 if (ret
!= -EBUSY
) {
1221 spin_lock_irqsave(&priv
->wmm
.ra_list_spinlock
, ra_list_flags
);
1222 if (mwifiex_is_ralist_valid(priv
, ptr
, ptr_index
)) {
1223 priv
->wmm
.packets_out
[ptr_index
]++;
1224 priv
->wmm
.tid_tbl_ptr
[ptr_index
].ra_list_curr
= ptr
;
1226 adapter
->bss_prio_tbl
[priv
->bss_priority
].bss_prio_cur
=
1228 &adapter
->bss_prio_tbl
[priv
->bss_priority
]
1229 .bss_prio_cur
->list
,
1230 struct mwifiex_bss_prio_node
,
1232 atomic_dec(&priv
->wmm
.tx_pkts_queued
);
1233 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
,
1239 * This function dequeues a packet from the highest priority list
1243 mwifiex_dequeue_tx_packet(struct mwifiex_adapter
*adapter
)
1245 struct mwifiex_ra_list_tbl
*ptr
;
1246 struct mwifiex_private
*priv
= NULL
;
1249 int tid_del
= 0, tid
= 0;
1250 unsigned long flags
;
1252 ptr
= mwifiex_wmm_get_highest_priolist_ptr(adapter
, &priv
, &ptr_index
);
1256 tid
= mwifiex_get_tid(ptr
);
1258 dev_dbg(adapter
->dev
, "data: tid=%d\n", tid
);
1260 spin_lock_irqsave(&priv
->wmm
.ra_list_spinlock
, flags
);
1261 if (!mwifiex_is_ralist_valid(priv
, ptr
, ptr_index
)) {
1262 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
, flags
);
1266 if (mwifiex_is_ptr_processed(priv
, ptr
)) {
1267 mwifiex_send_processed_packet(priv
, ptr
, ptr_index
, flags
);
1268 /* ra_list_spinlock has been freed in
1269 mwifiex_send_processed_packet() */
1273 if (!ptr
->is_11n_enabled
||
1274 mwifiex_is_ba_stream_setup(priv
, ptr
, tid
) ||
1275 priv
->wps
.session_enable
||
1276 ((priv
->sec_info
.wpa_enabled
||
1277 priv
->sec_info
.wpa2_enabled
) &&
1278 !priv
->wpa_is_gtk_set
)) {
1279 mwifiex_send_single_packet(priv
, ptr
, ptr_index
, flags
);
1280 /* ra_list_spinlock has been freed in
1281 mwifiex_send_single_packet() */
1283 if (mwifiex_is_ampdu_allowed(priv
, tid
) &&
1284 ptr
->pkt_count
> ptr
->ba_packet_thr
) {
1285 if (mwifiex_space_avail_for_new_ba_stream(adapter
)) {
1286 mwifiex_create_ba_tbl(priv
, ptr
->ra
, tid
,
1287 BA_SETUP_INPROGRESS
);
1288 mwifiex_send_addba(priv
, tid
, ptr
->ra
);
1289 } else if (mwifiex_find_stream_to_delete
1290 (priv
, tid
, &tid_del
, ra
)) {
1291 mwifiex_create_ba_tbl(priv
, ptr
->ra
, tid
,
1292 BA_SETUP_INPROGRESS
);
1293 mwifiex_send_delba(priv
, tid_del
, ra
, 1);
1296 if (mwifiex_is_amsdu_allowed(priv
, tid
) &&
1297 mwifiex_is_11n_aggragation_possible(priv
, ptr
,
1298 adapter
->tx_buf_size
))
1299 mwifiex_11n_aggregate_pkt(priv
, ptr
, INTF_HEADER_LEN
,
1301 /* ra_list_spinlock has been freed in
1302 mwifiex_11n_aggregate_pkt() */
1304 mwifiex_send_single_packet(priv
, ptr
, ptr_index
, flags
);
1305 /* ra_list_spinlock has been freed in
1306 mwifiex_send_single_packet() */
1312 * This function transmits the highest priority packet awaiting in the
1316 mwifiex_wmm_process_tx(struct mwifiex_adapter
*adapter
)
1320 if (adapter
->data_sent
|| adapter
->tx_lock_flag
)
1323 if (mwifiex_dequeue_tx_packet(adapter
))
1325 } while (!mwifiex_wmm_lists_empty(adapter
));