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
);
114 dev_err(adapter
->dev
, "%s: failed to alloc ra_list\n",
118 INIT_LIST_HEAD(&ra_list
->list
);
119 skb_queue_head_init(&ra_list
->skb_head
);
121 memcpy(ra_list
->ra
, ra
, ETH_ALEN
);
123 ra_list
->total_pkts_size
= 0;
125 dev_dbg(adapter
->dev
, "info: allocated ra_list %p\n", ra_list
);
131 * This function allocates and adds a RA list for all TIDs
135 mwifiex_ralist_add(struct mwifiex_private
*priv
, u8
*ra
)
138 struct mwifiex_ra_list_tbl
*ra_list
;
139 struct mwifiex_adapter
*adapter
= priv
->adapter
;
141 for (i
= 0; i
< MAX_NUM_TID
; ++i
) {
142 ra_list
= mwifiex_wmm_allocate_ralist_node(adapter
, ra
);
143 dev_dbg(adapter
->dev
, "info: created ra_list %p\n", ra_list
);
148 if (!mwifiex_queuing_ra_based(priv
))
149 ra_list
->is_11n_enabled
= IS_11N_ENABLED(priv
);
151 ra_list
->is_11n_enabled
= false;
153 dev_dbg(adapter
->dev
, "data: ralist %p: is_11n_enabled=%d\n",
154 ra_list
, ra_list
->is_11n_enabled
);
156 list_add_tail(&ra_list
->list
,
157 &priv
->wmm
.tid_tbl_ptr
[i
].ra_list
);
159 if (!priv
->wmm
.tid_tbl_ptr
[i
].ra_list_curr
)
160 priv
->wmm
.tid_tbl_ptr
[i
].ra_list_curr
= ra_list
;
165 * This function sets the WMM queue priorities to their default values.
167 static void mwifiex_wmm_default_queue_priorities(struct mwifiex_private
*priv
)
169 /* Default queue priorities: VO->VI->BE->BK */
170 priv
->wmm
.queue_priority
[0] = WMM_AC_VO
;
171 priv
->wmm
.queue_priority
[1] = WMM_AC_VI
;
172 priv
->wmm
.queue_priority
[2] = WMM_AC_BE
;
173 priv
->wmm
.queue_priority
[3] = WMM_AC_BK
;
177 * This function map ACs to TIDs.
180 mwifiex_wmm_queue_priorities_tid(struct mwifiex_private
*priv
,
185 for (i
= 0; i
< 4; ++i
) {
186 tos_to_tid
[7 - (i
* 2)] = ac_to_tid
[queue_priority
[i
]][1];
187 tos_to_tid
[6 - (i
* 2)] = ac_to_tid
[queue_priority
[i
]][0];
192 * This function initializes WMM priority queues.
195 mwifiex_wmm_setup_queue_priorities(struct mwifiex_private
*priv
,
196 struct ieee_types_wmm_parameter
*wmm_ie
)
198 u16 cw_min
, avg_back_off
, tmp
[4];
202 if (!wmm_ie
|| !priv
->wmm_enabled
) {
203 /* WMM is not enabled, just set the defaults and return */
204 mwifiex_wmm_default_queue_priorities(priv
);
208 dev_dbg(priv
->adapter
->dev
, "info: WMM Parameter IE: version=%d, "
209 "qos_info Parameter Set Count=%d, Reserved=%#x\n",
210 wmm_ie
->vend_hdr
.version
, wmm_ie
->qos_info_bitmap
&
211 IEEE80211_WMM_IE_AP_QOSINFO_PARAM_SET_CNT_MASK
,
214 for (num_ac
= 0; num_ac
< ARRAY_SIZE(wmm_ie
->ac_params
); num_ac
++) {
215 cw_min
= (1 << (wmm_ie
->ac_params
[num_ac
].ecw_bitmap
&
216 MWIFIEX_ECW_MIN
)) - 1;
217 avg_back_off
= (cw_min
>> 1) +
218 (wmm_ie
->ac_params
[num_ac
].aci_aifsn_bitmap
&
221 ac_idx
= wmm_aci_to_qidx_map
[(wmm_ie
->ac_params
[num_ac
].
224 priv
->wmm
.queue_priority
[ac_idx
] = ac_idx
;
225 tmp
[ac_idx
] = avg_back_off
;
227 dev_dbg(priv
->adapter
->dev
, "info: WMM: CWmax=%d CWmin=%d Avg Back-off=%d\n",
228 (1 << ((wmm_ie
->ac_params
[num_ac
].ecw_bitmap
&
229 MWIFIEX_ECW_MAX
) >> 4)) - 1,
230 cw_min
, avg_back_off
);
231 mwifiex_wmm_ac_debug_print(&wmm_ie
->ac_params
[num_ac
]);
235 for (i
= 0; i
< num_ac
; i
++) {
236 for (j
= 1; j
< num_ac
- i
; j
++) {
237 if (tmp
[j
- 1] > tmp
[j
]) {
238 swap(tmp
[j
- 1], tmp
[j
]);
239 swap(priv
->wmm
.queue_priority
[j
- 1],
240 priv
->wmm
.queue_priority
[j
]);
241 } else if (tmp
[j
- 1] == tmp
[j
]) {
242 if (priv
->wmm
.queue_priority
[j
- 1]
243 < priv
->wmm
.queue_priority
[j
])
244 swap(priv
->wmm
.queue_priority
[j
- 1],
245 priv
->wmm
.queue_priority
[j
]);
250 mwifiex_wmm_queue_priorities_tid(priv
, priv
->wmm
.queue_priority
);
254 * This function evaluates whether or not an AC is to be downgraded.
256 * In case the AC is not enabled, the highest AC is returned that is
257 * enabled and does not require admission control.
259 static enum mwifiex_wmm_ac_e
260 mwifiex_wmm_eval_downgrade_ac(struct mwifiex_private
*priv
,
261 enum mwifiex_wmm_ac_e eval_ac
)
264 enum mwifiex_wmm_ac_e ret_ac
;
265 struct mwifiex_wmm_ac_status
*ac_status
;
267 ac_status
= &priv
->wmm
.ac_status
[eval_ac
];
269 if (!ac_status
->disabled
)
270 /* Okay to use this AC, its enabled */
273 /* Setup a default return value of the lowest priority */
277 * Find the highest AC that is enabled and does not require
278 * admission control. The spec disallows downgrading to an AC,
279 * which is enabled due to a completed admission control.
280 * Unadmitted traffic is not to be sent on an AC with admitted
283 for (down_ac
= WMM_AC_BK
; down_ac
< eval_ac
; down_ac
++) {
284 ac_status
= &priv
->wmm
.ac_status
[down_ac
];
286 if (!ac_status
->disabled
&& !ac_status
->flow_required
)
287 /* AC is enabled and does not require admission
289 ret_ac
= (enum mwifiex_wmm_ac_e
) down_ac
;
296 * This function downgrades WMM priority queue.
299 mwifiex_wmm_setup_ac_downgrade(struct mwifiex_private
*priv
)
303 dev_dbg(priv
->adapter
->dev
, "info: WMM: AC Priorities:"
304 "BK(0), BE(1), VI(2), VO(3)\n");
306 if (!priv
->wmm_enabled
) {
307 /* WMM is not enabled, default priorities */
308 for (ac_val
= WMM_AC_BK
; ac_val
<= WMM_AC_VO
; ac_val
++)
309 priv
->wmm
.ac_down_graded_vals
[ac_val
] =
310 (enum mwifiex_wmm_ac_e
) ac_val
;
312 for (ac_val
= WMM_AC_BK
; ac_val
<= WMM_AC_VO
; ac_val
++) {
313 priv
->wmm
.ac_down_graded_vals
[ac_val
]
314 = mwifiex_wmm_eval_downgrade_ac(priv
,
315 (enum mwifiex_wmm_ac_e
) ac_val
);
316 dev_dbg(priv
->adapter
->dev
, "info: WMM: AC PRIO %d maps to %d\n",
317 ac_val
, priv
->wmm
.ac_down_graded_vals
[ac_val
]);
323 * This function converts the IP TOS field to an WMM AC
326 static enum mwifiex_wmm_ac_e
327 mwifiex_wmm_convert_tos_to_ac(struct mwifiex_adapter
*adapter
, u32 tos
)
329 /* Map of TOS UP values to WMM AC */
330 const enum mwifiex_wmm_ac_e tos_to_ac
[] = { WMM_AC_BE
,
340 if (tos
>= ARRAY_SIZE(tos_to_ac
))
343 return tos_to_ac
[tos
];
347 * This function evaluates a given TID and downgrades it to a lower
348 * TID if the WMM Parameter IE received from the AP indicates that the
349 * AP is disabled (due to call admission control (ACM bit). Mapping
350 * of TID to AC is taken care of internally.
353 mwifiex_wmm_downgrade_tid(struct mwifiex_private
*priv
, u32 tid
)
355 enum mwifiex_wmm_ac_e ac
, ac_down
;
358 ac
= mwifiex_wmm_convert_tos_to_ac(priv
->adapter
, tid
);
359 ac_down
= priv
->wmm
.ac_down_graded_vals
[ac
];
361 /* Send the index to tid array, picking from the array will be
362 * taken care by dequeuing function
364 new_tid
= ac_to_tid
[ac_down
][tid
% 2];
370 * This function initializes the WMM state information and the
371 * WMM data path queues.
374 mwifiex_wmm_init(struct mwifiex_adapter
*adapter
)
377 struct mwifiex_private
*priv
;
379 for (j
= 0; j
< adapter
->priv_num
; ++j
) {
380 priv
= adapter
->priv
[j
];
384 for (i
= 0; i
< MAX_NUM_TID
; ++i
) {
385 priv
->aggr_prio_tbl
[i
].amsdu
= tos_to_tid_inv
[i
];
386 priv
->aggr_prio_tbl
[i
].ampdu_ap
= tos_to_tid_inv
[i
];
387 priv
->aggr_prio_tbl
[i
].ampdu_user
= tos_to_tid_inv
[i
];
388 priv
->wmm
.tid_tbl_ptr
[i
].ra_list_curr
= NULL
;
391 priv
->aggr_prio_tbl
[6].amsdu
392 = priv
->aggr_prio_tbl
[6].ampdu_ap
393 = priv
->aggr_prio_tbl
[6].ampdu_user
394 = BA_STREAM_NOT_ALLOWED
;
396 priv
->aggr_prio_tbl
[7].amsdu
= priv
->aggr_prio_tbl
[7].ampdu_ap
397 = priv
->aggr_prio_tbl
[7].ampdu_user
398 = BA_STREAM_NOT_ALLOWED
;
400 priv
->add_ba_param
.timeout
= MWIFIEX_DEFAULT_BLOCK_ACK_TIMEOUT
;
401 priv
->add_ba_param
.tx_win_size
= MWIFIEX_AMPDU_DEF_TXWINSIZE
;
402 priv
->add_ba_param
.rx_win_size
= MWIFIEX_AMPDU_DEF_RXWINSIZE
;
407 * This function checks if WMM Tx queue is empty.
410 mwifiex_wmm_lists_empty(struct mwifiex_adapter
*adapter
)
413 struct mwifiex_private
*priv
;
415 for (j
= 0; j
< adapter
->priv_num
; ++j
) {
416 priv
= adapter
->priv
[j
];
418 for (i
= 0; i
< MAX_NUM_TID
; i
++)
419 if (!mwifiex_wmm_is_ra_list_empty(adapter
,
420 &priv
->wmm
.tid_tbl_ptr
[i
].ra_list
))
429 * This function deletes all packets in an RA list node.
431 * The packet sent completion callback handler are called with
432 * status failure, after they are dequeued to ensure proper
433 * cleanup. The RA list node itself is freed at the end.
436 mwifiex_wmm_del_pkts_in_ralist_node(struct mwifiex_private
*priv
,
437 struct mwifiex_ra_list_tbl
*ra_list
)
439 struct mwifiex_adapter
*adapter
= priv
->adapter
;
440 struct sk_buff
*skb
, *tmp
;
442 skb_queue_walk_safe(&ra_list
->skb_head
, skb
, tmp
)
443 mwifiex_write_data_complete(adapter
, skb
, -1);
447 * This function deletes all packets in an RA list.
449 * Each nodes in the RA list are freed individually first, and then
450 * the RA list itself is freed.
453 mwifiex_wmm_del_pkts_in_ralist(struct mwifiex_private
*priv
,
454 struct list_head
*ra_list_head
)
456 struct mwifiex_ra_list_tbl
*ra_list
;
458 list_for_each_entry(ra_list
, ra_list_head
, list
)
459 mwifiex_wmm_del_pkts_in_ralist_node(priv
, ra_list
);
463 * This function deletes all packets in all RA lists.
465 static void mwifiex_wmm_cleanup_queues(struct mwifiex_private
*priv
)
469 for (i
= 0; i
< MAX_NUM_TID
; i
++)
470 mwifiex_wmm_del_pkts_in_ralist(priv
, &priv
->wmm
.tid_tbl_ptr
[i
].
475 * This function deletes all route addresses from all RA lists.
477 static void mwifiex_wmm_delete_all_ralist(struct mwifiex_private
*priv
)
479 struct mwifiex_ra_list_tbl
*ra_list
, *tmp_node
;
482 for (i
= 0; i
< MAX_NUM_TID
; ++i
) {
483 dev_dbg(priv
->adapter
->dev
,
484 "info: ra_list: freeing buf for tid %d\n", i
);
485 list_for_each_entry_safe(ra_list
, tmp_node
,
486 &priv
->wmm
.tid_tbl_ptr
[i
].ra_list
, list
) {
487 list_del(&ra_list
->list
);
491 INIT_LIST_HEAD(&priv
->wmm
.tid_tbl_ptr
[i
].ra_list
);
493 priv
->wmm
.tid_tbl_ptr
[i
].ra_list_curr
= NULL
;
498 * This function cleans up the Tx and Rx queues.
501 * - All packets in RA lists
502 * - All entries in Rx reorder table
503 * - All entries in Tx BA stream table
504 * - MPA buffer (if required)
508 mwifiex_clean_txrx(struct mwifiex_private
*priv
)
512 mwifiex_11n_cleanup_reorder_tbl(priv
);
513 spin_lock_irqsave(&priv
->wmm
.ra_list_spinlock
, flags
);
515 mwifiex_wmm_cleanup_queues(priv
);
516 mwifiex_11n_delete_all_tx_ba_stream_tbl(priv
);
518 if (priv
->adapter
->if_ops
.cleanup_mpa_buf
)
519 priv
->adapter
->if_ops
.cleanup_mpa_buf(priv
->adapter
);
521 mwifiex_wmm_delete_all_ralist(priv
);
522 memcpy(tos_to_tid
, ac_to_tid
, sizeof(tos_to_tid
));
524 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
, flags
);
528 * This function retrieves a particular RA list node, matching with the
529 * given TID and RA address.
531 static struct mwifiex_ra_list_tbl
*
532 mwifiex_wmm_get_ralist_node(struct mwifiex_private
*priv
, u8 tid
,
535 struct mwifiex_ra_list_tbl
*ra_list
;
537 list_for_each_entry(ra_list
, &priv
->wmm
.tid_tbl_ptr
[tid
].ra_list
,
539 if (!memcmp(ra_list
->ra
, ra_addr
, ETH_ALEN
))
547 * This function retrieves an RA list node for a given TID and
550 * If no such node is found, a new node is added first and then
553 static struct mwifiex_ra_list_tbl
*
554 mwifiex_wmm_get_queue_raptr(struct mwifiex_private
*priv
, u8 tid
, u8
*ra_addr
)
556 struct mwifiex_ra_list_tbl
*ra_list
;
558 ra_list
= mwifiex_wmm_get_ralist_node(priv
, tid
, ra_addr
);
561 mwifiex_ralist_add(priv
, ra_addr
);
563 return mwifiex_wmm_get_ralist_node(priv
, tid
, ra_addr
);
567 * This function checks if a particular RA list node exists in a given TID
571 mwifiex_is_ralist_valid(struct mwifiex_private
*priv
,
572 struct mwifiex_ra_list_tbl
*ra_list
, int ptr_index
)
574 struct mwifiex_ra_list_tbl
*rlist
;
576 list_for_each_entry(rlist
, &priv
->wmm
.tid_tbl_ptr
[ptr_index
].ra_list
,
578 if (rlist
== ra_list
)
586 * This function adds a packet to WMM queue.
588 * In disconnected state the packet is immediately dropped and the
589 * packet send completion callback is called with status failure.
591 * Otherwise, the correct RA list node is located and the packet
592 * is queued at the list tail.
595 mwifiex_wmm_add_buf_txqueue(struct mwifiex_adapter
*adapter
,
598 struct mwifiex_txinfo
*tx_info
= MWIFIEX_SKB_TXCB(skb
);
599 struct mwifiex_private
*priv
= adapter
->priv
[tx_info
->bss_index
];
601 struct mwifiex_ra_list_tbl
*ra_list
;
602 u8 ra
[ETH_ALEN
], tid_down
;
605 if (!priv
->media_connected
) {
606 dev_dbg(adapter
->dev
, "data: drop packet in disconnect\n");
607 mwifiex_write_data_complete(adapter
, skb
, -1);
613 spin_lock_irqsave(&priv
->wmm
.ra_list_spinlock
, flags
);
615 tid_down
= mwifiex_wmm_downgrade_tid(priv
, tid
);
617 /* In case of infra as we have already created the list during
618 association we just don't have to call get_queue_raptr, we will
619 have only 1 raptr for a tid in case of infra */
620 if (!mwifiex_queuing_ra_based(priv
)) {
621 if (!list_empty(&priv
->wmm
.tid_tbl_ptr
[tid_down
].ra_list
))
622 ra_list
= list_first_entry(
623 &priv
->wmm
.tid_tbl_ptr
[tid_down
].ra_list
,
624 struct mwifiex_ra_list_tbl
, list
);
628 memcpy(ra
, skb
->data
, ETH_ALEN
);
629 ra_list
= mwifiex_wmm_get_queue_raptr(priv
, tid_down
, ra
);
633 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
, flags
);
634 mwifiex_write_data_complete(adapter
, skb
, -1);
638 skb_queue_tail(&ra_list
->skb_head
, skb
);
640 ra_list
->total_pkts_size
+= skb
->len
;
642 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
, flags
);
646 * This function processes the get WMM status command response from firmware.
648 * The response may contain multiple TLVs -
649 * - AC Queue status TLVs
650 * - Current WMM Parameter IE TLV
651 * - Admission Control action frame TLVs
653 * This function parses the TLVs and then calls further specific functions
654 * to process any changes in the queue prioritize or state.
656 int mwifiex_ret_wmm_get_status(struct mwifiex_private
*priv
,
657 const struct host_cmd_ds_command
*resp
)
659 u8
*curr
= (u8
*) &resp
->params
.get_wmm_status
;
660 uint16_t resp_len
= le16_to_cpu(resp
->size
), tlv_len
;
663 struct mwifiex_ie_types_data
*tlv_hdr
;
664 struct mwifiex_ie_types_wmm_queue_status
*tlv_wmm_qstatus
;
665 struct ieee_types_wmm_parameter
*wmm_param_ie
= NULL
;
666 struct mwifiex_wmm_ac_status
*ac_status
;
668 dev_dbg(priv
->adapter
->dev
, "info: WMM: WMM_GET_STATUS cmdresp received: %d\n",
671 while ((resp_len
>= sizeof(tlv_hdr
->header
)) && valid
) {
672 tlv_hdr
= (struct mwifiex_ie_types_data
*) curr
;
673 tlv_len
= le16_to_cpu(tlv_hdr
->header
.len
);
675 switch (le16_to_cpu(tlv_hdr
->header
.type
)) {
676 case TLV_TYPE_WMMQSTATUS
:
678 (struct mwifiex_ie_types_wmm_queue_status
*)
680 dev_dbg(priv
->adapter
->dev
,
681 "info: CMD_RESP: WMM_GET_STATUS:"
682 " QSTATUS TLV: %d, %d, %d\n",
683 tlv_wmm_qstatus
->queue_index
,
684 tlv_wmm_qstatus
->flow_required
,
685 tlv_wmm_qstatus
->disabled
);
687 ac_status
= &priv
->wmm
.ac_status
[tlv_wmm_qstatus
->
689 ac_status
->disabled
= tlv_wmm_qstatus
->disabled
;
690 ac_status
->flow_required
=
691 tlv_wmm_qstatus
->flow_required
;
692 ac_status
->flow_created
= tlv_wmm_qstatus
->flow_created
;
695 case WLAN_EID_VENDOR_SPECIFIC
:
697 * Point the regular IEEE IE 2 bytes into the Marvell IE
698 * and setup the IEEE IE type and length byte fields
702 (struct ieee_types_wmm_parameter
*) (curr
+
704 wmm_param_ie
->vend_hdr
.len
= (u8
) tlv_len
;
705 wmm_param_ie
->vend_hdr
.element_id
=
706 WLAN_EID_VENDOR_SPECIFIC
;
708 dev_dbg(priv
->adapter
->dev
,
709 "info: CMD_RESP: WMM_GET_STATUS:"
710 " WMM Parameter Set Count: %d\n",
711 wmm_param_ie
->qos_info_bitmap
&
712 IEEE80211_WMM_IE_AP_QOSINFO_PARAM_SET_CNT_MASK
);
714 memcpy((u8
*) &priv
->curr_bss_params
.bss_descriptor
.
715 wmm_ie
, wmm_param_ie
,
716 wmm_param_ie
->vend_hdr
.len
+ 2);
725 curr
+= (tlv_len
+ sizeof(tlv_hdr
->header
));
726 resp_len
-= (tlv_len
+ sizeof(tlv_hdr
->header
));
729 mwifiex_wmm_setup_queue_priorities(priv
, wmm_param_ie
);
730 mwifiex_wmm_setup_ac_downgrade(priv
);
736 * Callback handler from the command module to allow insertion of a WMM TLV.
738 * If the BSS we are associating to supports WMM, this function adds the
739 * required WMM Information IE to the association request command buffer in
740 * the form of a Marvell extended IEEE IE.
743 mwifiex_wmm_process_association_req(struct mwifiex_private
*priv
,
745 struct ieee_types_wmm_parameter
*wmm_ie
,
746 struct ieee80211_ht_cap
*ht_cap
)
748 struct mwifiex_ie_types_wmm_param_set
*wmm_tlv
;
760 dev_dbg(priv
->adapter
->dev
, "info: WMM: process assoc req:"
762 wmm_ie
->vend_hdr
.element_id
);
764 if ((priv
->wmm_required
765 || (ht_cap
&& (priv
->adapter
->config_bands
& BAND_GN
766 || priv
->adapter
->config_bands
& BAND_AN
))
768 && wmm_ie
->vend_hdr
.element_id
== WLAN_EID_VENDOR_SPECIFIC
) {
769 wmm_tlv
= (struct mwifiex_ie_types_wmm_param_set
*) *assoc_buf
;
770 wmm_tlv
->header
.type
= cpu_to_le16((u16
) wmm_info_ie
[0]);
771 wmm_tlv
->header
.len
= cpu_to_le16((u16
) wmm_info_ie
[1]);
772 memcpy(wmm_tlv
->wmm_ie
, &wmm_info_ie
[2],
773 le16_to_cpu(wmm_tlv
->header
.len
));
774 if (wmm_ie
->qos_info_bitmap
& IEEE80211_WMM_IE_AP_QOSINFO_UAPSD
)
775 memcpy((u8
*) (wmm_tlv
->wmm_ie
776 + le16_to_cpu(wmm_tlv
->header
.len
)
777 - sizeof(priv
->wmm_qosinfo
)),
779 sizeof(priv
->wmm_qosinfo
));
781 ret_len
= sizeof(wmm_tlv
->header
)
782 + le16_to_cpu(wmm_tlv
->header
.len
);
784 *assoc_buf
+= ret_len
;
791 * This function computes the time delay in the driver queues for a
794 * When the packet is received at the OS/Driver interface, the current
795 * time is set in the packet structure. The difference between the present
796 * time and that received time is computed in this function and limited
797 * based on pre-compiled limits in the driver.
800 mwifiex_wmm_compute_drv_pkt_delay(struct mwifiex_private
*priv
,
801 const struct sk_buff
*skb
)
804 struct timeval out_tstamp
, in_tstamp
;
807 do_gettimeofday(&out_tstamp
);
808 in_tstamp
= ktime_to_timeval(skb
->tstamp
);
810 queue_delay
= (out_tstamp
.tv_sec
- in_tstamp
.tv_sec
) * 1000;
811 queue_delay
+= (out_tstamp
.tv_usec
- in_tstamp
.tv_usec
) / 1000;
814 * Queue delay is passed as a uint8 in units of 2ms (ms shifted
815 * by 1). Min value (other than 0) is therefore 2ms, max is 510ms.
817 * Pass max value if queue_delay is beyond the uint8 range
819 ret_val
= (u8
) (min(queue_delay
, priv
->wmm
.drv_pkt_delay_max
) >> 1);
821 dev_dbg(priv
->adapter
->dev
, "data: WMM: Pkt Delay: %d ms,"
822 " %d ms sent to FW\n", queue_delay
, ret_val
);
828 * This function retrieves the highest priority RA list table pointer.
830 static struct mwifiex_ra_list_tbl
*
831 mwifiex_wmm_get_highest_priolist_ptr(struct mwifiex_adapter
*adapter
,
832 struct mwifiex_private
**priv
, int *tid
)
834 struct mwifiex_private
*priv_tmp
;
835 struct mwifiex_ra_list_tbl
*ptr
, *head
;
836 struct mwifiex_bss_prio_node
*bssprio_node
, *bssprio_head
;
837 struct mwifiex_tid_tbl
*tid_ptr
;
842 for (j
= adapter
->priv_num
- 1; j
>= 0; --j
) {
843 spin_lock_irqsave(&adapter
->bss_prio_tbl
[j
].bss_prio_lock
,
845 is_list_empty
= list_empty(&adapter
->bss_prio_tbl
[j
]
847 spin_unlock_irqrestore(&adapter
->bss_prio_tbl
[j
].bss_prio_lock
,
852 if (adapter
->bss_prio_tbl
[j
].bss_prio_cur
==
853 (struct mwifiex_bss_prio_node
*)
854 &adapter
->bss_prio_tbl
[j
].bss_prio_head
) {
856 list_first_entry(&adapter
->bss_prio_tbl
[j
]
858 struct mwifiex_bss_prio_node
,
860 bssprio_head
= bssprio_node
;
862 bssprio_node
= adapter
->bss_prio_tbl
[j
].bss_prio_cur
;
863 bssprio_head
= bssprio_node
;
867 priv_tmp
= bssprio_node
->priv
;
869 for (i
= HIGH_PRIO_TID
; i
>= LOW_PRIO_TID
; --i
) {
871 tid_ptr
= &(priv_tmp
)->wmm
.
872 tid_tbl_ptr
[tos_to_tid
[i
]];
874 spin_lock_irqsave(&tid_ptr
->tid_tbl_lock
,
877 list_empty(&adapter
->bss_prio_tbl
[j
]
879 spin_unlock_irqrestore(&tid_ptr
->tid_tbl_lock
,
885 * Always choose the next ra we transmitted
886 * last time, this way we pick the ra's in
887 * round robin fashion.
889 ptr
= list_first_entry(
890 &tid_ptr
->ra_list_curr
->list
,
891 struct mwifiex_ra_list_tbl
,
895 if (ptr
== (struct mwifiex_ra_list_tbl
*)
898 ptr
= list_first_entry(&ptr
->list
,
899 struct mwifiex_ra_list_tbl
, list
);
905 skb_queue_empty(&ptr
->skb_head
);
906 if (!is_list_empty
) {
908 *tid
= tos_to_tid
[i
];
912 ptr
= list_first_entry(&ptr
->list
,
913 struct mwifiex_ra_list_tbl
,
916 (struct mwifiex_ra_list_tbl
*)
918 ptr
= list_first_entry(
920 struct mwifiex_ra_list_tbl
,
922 } while (ptr
!= head
);
925 /* Get next bss priority node */
926 bssprio_node
= list_first_entry(&bssprio_node
->list
,
927 struct mwifiex_bss_prio_node
,
931 (struct mwifiex_bss_prio_node
*)
932 &adapter
->bss_prio_tbl
[j
].bss_prio_head
)
933 /* Get next bss priority node */
934 bssprio_node
= list_first_entry(
936 struct mwifiex_bss_prio_node
,
938 } while (bssprio_node
!= bssprio_head
);
944 * This function gets the number of packets in the Tx queue of a
945 * particular RA list.
948 mwifiex_num_pkts_in_txq(struct mwifiex_private
*priv
,
949 struct mwifiex_ra_list_tbl
*ptr
, int max_buf_size
)
951 int count
= 0, total_size
= 0;
952 struct sk_buff
*skb
, *tmp
;
954 skb_queue_walk_safe(&ptr
->skb_head
, skb
, tmp
) {
955 total_size
+= skb
->len
;
956 if (total_size
< max_buf_size
)
966 * This function sends a single packet to firmware for transmission.
969 mwifiex_send_single_packet(struct mwifiex_private
*priv
,
970 struct mwifiex_ra_list_tbl
*ptr
, int ptr_index
,
971 unsigned long ra_list_flags
)
972 __releases(&priv
->wmm
.ra_list_spinlock
)
974 struct sk_buff
*skb
, *skb_next
;
975 struct mwifiex_tx_param tx_param
;
976 struct mwifiex_adapter
*adapter
= priv
->adapter
;
978 struct mwifiex_txinfo
*tx_info
;
980 if (skb_queue_empty(&ptr
->skb_head
)) {
981 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
,
983 dev_dbg(adapter
->dev
, "data: nothing to send\n");
987 skb
= skb_dequeue(&ptr
->skb_head
);
989 tx_info
= MWIFIEX_SKB_TXCB(skb
);
990 dev_dbg(adapter
->dev
, "data: dequeuing the packet %p %p\n", ptr
, skb
);
992 ptr
->total_pkts_size
-= skb
->len
;
994 if (!skb_queue_empty(&ptr
->skb_head
))
995 skb_next
= skb_peek(&ptr
->skb_head
);
999 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
, ra_list_flags
);
1001 tx_param
.next_pkt_len
= ((skb_next
) ? skb_next
->len
+
1002 sizeof(struct txpd
) : 0);
1004 status
= mwifiex_process_tx(priv
, skb
, &tx_param
);
1006 if (status
== -EBUSY
) {
1007 /* Queue the packet back at the head */
1008 spin_lock_irqsave(&priv
->wmm
.ra_list_spinlock
, ra_list_flags
);
1010 if (!mwifiex_is_ralist_valid(priv
, ptr
, ptr_index
)) {
1011 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
,
1013 mwifiex_write_data_complete(adapter
, skb
, -1);
1017 skb_queue_tail(&ptr
->skb_head
, skb
);
1019 ptr
->total_pkts_size
+= skb
->len
;
1020 tx_info
->flags
|= MWIFIEX_BUF_FLAG_REQUEUED_PKT
;
1021 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
,
1024 spin_lock_irqsave(&priv
->wmm
.ra_list_spinlock
, ra_list_flags
);
1025 if (mwifiex_is_ralist_valid(priv
, ptr
, ptr_index
)) {
1026 priv
->wmm
.packets_out
[ptr_index
]++;
1027 priv
->wmm
.tid_tbl_ptr
[ptr_index
].ra_list_curr
= ptr
;
1029 adapter
->bss_prio_tbl
[priv
->bss_priority
].bss_prio_cur
=
1031 &adapter
->bss_prio_tbl
[priv
->bss_priority
]
1032 .bss_prio_cur
->list
,
1033 struct mwifiex_bss_prio_node
,
1035 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
,
1041 * This function checks if the first packet in the given RA list
1042 * is already processed or not.
1045 mwifiex_is_ptr_processed(struct mwifiex_private
*priv
,
1046 struct mwifiex_ra_list_tbl
*ptr
)
1048 struct sk_buff
*skb
;
1049 struct mwifiex_txinfo
*tx_info
;
1051 if (skb_queue_empty(&ptr
->skb_head
))
1054 skb
= skb_peek(&ptr
->skb_head
);
1056 tx_info
= MWIFIEX_SKB_TXCB(skb
);
1057 if (tx_info
->flags
& MWIFIEX_BUF_FLAG_REQUEUED_PKT
)
1064 * This function sends a single processed packet to firmware for
1068 mwifiex_send_processed_packet(struct mwifiex_private
*priv
,
1069 struct mwifiex_ra_list_tbl
*ptr
, int ptr_index
,
1070 unsigned long ra_list_flags
)
1071 __releases(&priv
->wmm
.ra_list_spinlock
)
1073 struct mwifiex_tx_param tx_param
;
1074 struct mwifiex_adapter
*adapter
= priv
->adapter
;
1076 struct sk_buff
*skb
, *skb_next
;
1077 struct mwifiex_txinfo
*tx_info
;
1079 if (skb_queue_empty(&ptr
->skb_head
)) {
1080 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
,
1085 skb
= skb_dequeue(&ptr
->skb_head
);
1087 if (!skb_queue_empty(&ptr
->skb_head
))
1088 skb_next
= skb_peek(&ptr
->skb_head
);
1092 tx_info
= MWIFIEX_SKB_TXCB(skb
);
1094 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
, ra_list_flags
);
1095 tx_param
.next_pkt_len
=
1096 ((skb_next
) ? skb_next
->len
+
1097 sizeof(struct txpd
) : 0);
1098 ret
= adapter
->if_ops
.host_to_card(adapter
, MWIFIEX_TYPE_DATA
,
1099 skb
->data
, skb
->len
, &tx_param
);
1102 dev_dbg(adapter
->dev
, "data: -EBUSY is returned\n");
1103 spin_lock_irqsave(&priv
->wmm
.ra_list_spinlock
, ra_list_flags
);
1105 if (!mwifiex_is_ralist_valid(priv
, ptr
, ptr_index
)) {
1106 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
,
1108 mwifiex_write_data_complete(adapter
, skb
, -1);
1112 skb_queue_tail(&ptr
->skb_head
, skb
);
1114 tx_info
->flags
|= MWIFIEX_BUF_FLAG_REQUEUED_PKT
;
1115 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
,
1119 adapter
->data_sent
= false;
1120 dev_err(adapter
->dev
, "host_to_card failed: %#x\n", ret
);
1121 adapter
->dbg
.num_tx_host_to_card_failure
++;
1122 mwifiex_write_data_complete(adapter
, skb
, ret
);
1125 adapter
->data_sent
= false;
1129 if (ret
!= -EBUSY
) {
1130 spin_lock_irqsave(&priv
->wmm
.ra_list_spinlock
, ra_list_flags
);
1131 if (mwifiex_is_ralist_valid(priv
, ptr
, ptr_index
)) {
1132 priv
->wmm
.packets_out
[ptr_index
]++;
1133 priv
->wmm
.tid_tbl_ptr
[ptr_index
].ra_list_curr
= ptr
;
1135 adapter
->bss_prio_tbl
[priv
->bss_priority
].bss_prio_cur
=
1137 &adapter
->bss_prio_tbl
[priv
->bss_priority
]
1138 .bss_prio_cur
->list
,
1139 struct mwifiex_bss_prio_node
,
1141 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
,
1147 * This function dequeues a packet from the highest priority list
1151 mwifiex_dequeue_tx_packet(struct mwifiex_adapter
*adapter
)
1153 struct mwifiex_ra_list_tbl
*ptr
;
1154 struct mwifiex_private
*priv
= NULL
;
1157 int tid_del
= 0, tid
= 0;
1158 unsigned long flags
;
1160 ptr
= mwifiex_wmm_get_highest_priolist_ptr(adapter
, &priv
, &ptr_index
);
1164 tid
= mwifiex_get_tid(priv
->adapter
, ptr
);
1166 dev_dbg(adapter
->dev
, "data: tid=%d\n", tid
);
1168 spin_lock_irqsave(&priv
->wmm
.ra_list_spinlock
, flags
);
1169 if (!mwifiex_is_ralist_valid(priv
, ptr
, ptr_index
)) {
1170 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
, flags
);
1174 if (mwifiex_is_ptr_processed(priv
, ptr
)) {
1175 mwifiex_send_processed_packet(priv
, ptr
, ptr_index
, flags
);
1176 /* ra_list_spinlock has been freed in
1177 mwifiex_send_processed_packet() */
1181 if (!ptr
->is_11n_enabled
|| mwifiex_is_ba_stream_setup(priv
, ptr
, tid
)
1182 || ((priv
->sec_info
.wpa_enabled
1183 || priv
->sec_info
.wpa2_enabled
) && !priv
->wpa_is_gtk_set
)
1185 mwifiex_send_single_packet(priv
, ptr
, ptr_index
, flags
);
1186 /* ra_list_spinlock has been freed in
1187 mwifiex_send_single_packet() */
1189 if (mwifiex_is_ampdu_allowed(priv
, ptr
, tid
)) {
1190 if (mwifiex_is_ba_stream_avail(priv
)) {
1191 mwifiex_11n_create_tx_ba_stream_tbl(priv
,
1193 BA_STREAM_SETUP_INPROGRESS
);
1194 mwifiex_send_addba(priv
, tid
, ptr
->ra
);
1195 } else if (mwifiex_find_stream_to_delete
1196 (priv
, ptr
, tid
, &tid_del
, ra
)) {
1197 mwifiex_11n_create_tx_ba_stream_tbl(priv
,
1199 BA_STREAM_SETUP_INPROGRESS
);
1200 mwifiex_send_delba(priv
, tid_del
, ra
, 1);
1203 /* Minimum number of AMSDU */
1204 #define MIN_NUM_AMSDU 2
1205 if (mwifiex_is_amsdu_allowed(priv
, ptr
, tid
) &&
1206 (mwifiex_num_pkts_in_txq(priv
, ptr
, adapter
->tx_buf_size
) >=
1208 mwifiex_11n_aggregate_pkt(priv
, ptr
, INTF_HEADER_LEN
,
1210 /* ra_list_spinlock has been freed in
1211 mwifiex_11n_aggregate_pkt() */
1213 mwifiex_send_single_packet(priv
, ptr
, ptr_index
, flags
);
1214 /* ra_list_spinlock has been freed in
1215 mwifiex_send_single_packet() */
1221 * This function transmits the highest priority packet awaiting in the
1225 mwifiex_wmm_process_tx(struct mwifiex_adapter
*adapter
)
1229 if (adapter
->data_sent
|| adapter
->tx_lock_flag
)
1232 if (mwifiex_dequeue_tx_packet(adapter
))