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 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 dev_dbg(adapter
->dev
, "info: allocated ra_list %p\n", ra_list
);
115 /* This function returns random no between 16 and 32 to be used as threshold
116 * for no of packets after which BA setup is initiated.
118 static u8
mwifiex_get_random_ba_threshold(void)
121 struct timeval ba_tstamp
;
124 /* setup ba_packet_threshold here random number between
125 * [BA_SETUP_PACKET_OFFSET,
126 * BA_SETUP_PACKET_OFFSET+BA_SETUP_MAX_PACKET_THRESHOLD-1]
129 do_gettimeofday(&ba_tstamp
);
130 sec
= (ba_tstamp
.tv_sec
& 0xFFFF) + (ba_tstamp
.tv_sec
>> 16);
131 usec
= (ba_tstamp
.tv_usec
& 0xFFFF) + (ba_tstamp
.tv_usec
>> 16);
132 ba_threshold
= (((sec
<< 16) + usec
) % BA_SETUP_MAX_PACKET_THRESHOLD
)
133 + BA_SETUP_PACKET_OFFSET
;
139 * This function allocates and adds a RA list for all TIDs
142 void mwifiex_ralist_add(struct mwifiex_private
*priv
, const u8
*ra
)
145 struct mwifiex_ra_list_tbl
*ra_list
;
146 struct mwifiex_adapter
*adapter
= priv
->adapter
;
147 struct mwifiex_sta_node
*node
;
150 spin_lock_irqsave(&priv
->sta_list_spinlock
, flags
);
151 node
= mwifiex_get_sta_entry(priv
, ra
);
152 spin_unlock_irqrestore(&priv
->sta_list_spinlock
, flags
);
154 for (i
= 0; i
< MAX_NUM_TID
; ++i
) {
155 ra_list
= mwifiex_wmm_allocate_ralist_node(adapter
, ra
);
156 dev_dbg(adapter
->dev
, "info: created ra_list %p\n", ra_list
);
161 ra_list
->is_11n_enabled
= 0;
162 ra_list
->tdls_link
= false;
163 if (!mwifiex_queuing_ra_based(priv
)) {
164 if (mwifiex_get_tdls_link_status(priv
, ra
) ==
165 TDLS_SETUP_COMPLETE
) {
166 ra_list
->is_11n_enabled
=
167 mwifiex_tdls_peer_11n_enabled(priv
, ra
);
169 ra_list
->is_11n_enabled
= IS_11N_ENABLED(priv
);
172 ra_list
->is_11n_enabled
=
173 mwifiex_is_sta_11n_enabled(priv
, node
);
174 if (ra_list
->is_11n_enabled
)
175 ra_list
->max_amsdu
= node
->max_amsdu
;
178 dev_dbg(adapter
->dev
, "data: ralist %p: is_11n_enabled=%d\n",
179 ra_list
, ra_list
->is_11n_enabled
);
181 if (ra_list
->is_11n_enabled
) {
182 ra_list
->ba_pkt_count
= 0;
183 ra_list
->ba_packet_thr
=
184 mwifiex_get_random_ba_threshold();
186 list_add_tail(&ra_list
->list
,
187 &priv
->wmm
.tid_tbl_ptr
[i
].ra_list
);
192 * This function sets the WMM queue priorities to their default values.
194 static void mwifiex_wmm_default_queue_priorities(struct mwifiex_private
*priv
)
196 /* Default queue priorities: VO->VI->BE->BK */
197 priv
->wmm
.queue_priority
[0] = WMM_AC_VO
;
198 priv
->wmm
.queue_priority
[1] = WMM_AC_VI
;
199 priv
->wmm
.queue_priority
[2] = WMM_AC_BE
;
200 priv
->wmm
.queue_priority
[3] = WMM_AC_BK
;
204 * This function map ACs to TIDs.
207 mwifiex_wmm_queue_priorities_tid(struct mwifiex_private
*priv
)
209 struct mwifiex_wmm_desc
*wmm
= &priv
->wmm
;
210 u8
*queue_priority
= wmm
->queue_priority
;
213 for (i
= 0; i
< 4; ++i
) {
214 tos_to_tid
[7 - (i
* 2)] = ac_to_tid
[queue_priority
[i
]][1];
215 tos_to_tid
[6 - (i
* 2)] = ac_to_tid
[queue_priority
[i
]][0];
218 for (i
= 0; i
< MAX_NUM_TID
; ++i
)
219 priv
->tos_to_tid_inv
[tos_to_tid
[i
]] = (u8
)i
;
221 atomic_set(&wmm
->highest_queued_prio
, HIGH_PRIO_TID
);
225 * This function initializes WMM priority queues.
228 mwifiex_wmm_setup_queue_priorities(struct mwifiex_private
*priv
,
229 struct ieee_types_wmm_parameter
*wmm_ie
)
231 u16 cw_min
, avg_back_off
, tmp
[4];
235 if (!wmm_ie
|| !priv
->wmm_enabled
) {
236 /* WMM is not enabled, just set the defaults and return */
237 mwifiex_wmm_default_queue_priorities(priv
);
241 dev_dbg(priv
->adapter
->dev
, "info: WMM Parameter IE: version=%d, "
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 dev_dbg(priv
->adapter
->dev
,
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 dev_dbg(priv
->adapter
->dev
, "info: WMM: AC Priorities:"
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 dev_dbg(priv
->adapter
->dev
,
347 "info: WMM: AC PRIO %d maps to %d\n",
348 ac_val
, priv
->wmm
.ac_down_graded_vals
[ac_val
]);
354 * This function converts the IP TOS field to an WMM AC
357 static enum mwifiex_wmm_ac_e
358 mwifiex_wmm_convert_tos_to_ac(struct mwifiex_adapter
*adapter
, u32 tos
)
360 /* Map of TOS UP values to WMM AC */
361 const enum mwifiex_wmm_ac_e tos_to_ac
[] = { WMM_AC_BE
,
371 if (tos
>= ARRAY_SIZE(tos_to_ac
))
374 return tos_to_ac
[tos
];
378 * This function evaluates a given TID and downgrades it to a lower
379 * TID if the WMM Parameter IE received from the AP indicates that the
380 * AP is disabled (due to call admission control (ACM bit). Mapping
381 * of TID to AC is taken care of internally.
383 u8
mwifiex_wmm_downgrade_tid(struct mwifiex_private
*priv
, u32 tid
)
385 enum mwifiex_wmm_ac_e ac
, ac_down
;
388 ac
= mwifiex_wmm_convert_tos_to_ac(priv
->adapter
, tid
);
389 ac_down
= priv
->wmm
.ac_down_graded_vals
[ac
];
391 /* Send the index to tid array, picking from the array will be
392 * taken care by dequeuing function
394 new_tid
= ac_to_tid
[ac_down
][tid
% 2];
400 * This function initializes the WMM state information and the
401 * WMM data path queues.
404 mwifiex_wmm_init(struct mwifiex_adapter
*adapter
)
407 struct mwifiex_private
*priv
;
409 for (j
= 0; j
< adapter
->priv_num
; ++j
) {
410 priv
= adapter
->priv
[j
];
414 for (i
= 0; i
< MAX_NUM_TID
; ++i
) {
415 if (!disable_tx_amsdu
&&
416 adapter
->tx_buf_size
> MWIFIEX_TX_DATA_BUF_SIZE_2K
)
417 priv
->aggr_prio_tbl
[i
].amsdu
=
418 priv
->tos_to_tid_inv
[i
];
420 priv
->aggr_prio_tbl
[i
].amsdu
=
421 BA_STREAM_NOT_ALLOWED
;
422 priv
->aggr_prio_tbl
[i
].ampdu_ap
=
423 priv
->tos_to_tid_inv
[i
];
424 priv
->aggr_prio_tbl
[i
].ampdu_user
=
425 priv
->tos_to_tid_inv
[i
];
428 priv
->aggr_prio_tbl
[6].amsdu
429 = priv
->aggr_prio_tbl
[6].ampdu_ap
430 = priv
->aggr_prio_tbl
[6].ampdu_user
431 = BA_STREAM_NOT_ALLOWED
;
433 priv
->aggr_prio_tbl
[7].amsdu
= priv
->aggr_prio_tbl
[7].ampdu_ap
434 = priv
->aggr_prio_tbl
[7].ampdu_user
435 = BA_STREAM_NOT_ALLOWED
;
437 mwifiex_set_ba_params(priv
);
438 mwifiex_reset_11n_rx_seq_num(priv
);
440 atomic_set(&priv
->wmm
.tx_pkts_queued
, 0);
441 atomic_set(&priv
->wmm
.highest_queued_prio
, HIGH_PRIO_TID
);
446 * This function checks if WMM Tx queue is empty.
449 mwifiex_wmm_lists_empty(struct mwifiex_adapter
*adapter
)
452 struct mwifiex_private
*priv
;
454 for (i
= 0; i
< adapter
->priv_num
; ++i
) {
455 priv
= adapter
->priv
[i
];
456 if (priv
&& atomic_read(&priv
->wmm
.tx_pkts_queued
))
464 * This function deletes all packets in an RA list node.
466 * The packet sent completion callback handler are called with
467 * status failure, after they are dequeued to ensure proper
468 * cleanup. The RA list node itself is freed at the end.
471 mwifiex_wmm_del_pkts_in_ralist_node(struct mwifiex_private
*priv
,
472 struct mwifiex_ra_list_tbl
*ra_list
)
474 struct mwifiex_adapter
*adapter
= priv
->adapter
;
475 struct sk_buff
*skb
, *tmp
;
477 skb_queue_walk_safe(&ra_list
->skb_head
, skb
, tmp
)
478 mwifiex_write_data_complete(adapter
, skb
, 0, -1);
482 * This function deletes all packets in an RA list.
484 * Each nodes in the RA list are freed individually first, and then
485 * the RA list itself is freed.
488 mwifiex_wmm_del_pkts_in_ralist(struct mwifiex_private
*priv
,
489 struct list_head
*ra_list_head
)
491 struct mwifiex_ra_list_tbl
*ra_list
;
493 list_for_each_entry(ra_list
, ra_list_head
, list
)
494 mwifiex_wmm_del_pkts_in_ralist_node(priv
, ra_list
);
498 * This function deletes all packets in all RA lists.
500 static void mwifiex_wmm_cleanup_queues(struct mwifiex_private
*priv
)
504 for (i
= 0; i
< MAX_NUM_TID
; i
++)
505 mwifiex_wmm_del_pkts_in_ralist(priv
, &priv
->wmm
.tid_tbl_ptr
[i
].
508 atomic_set(&priv
->wmm
.tx_pkts_queued
, 0);
509 atomic_set(&priv
->wmm
.highest_queued_prio
, HIGH_PRIO_TID
);
513 * This function deletes all route addresses from all RA lists.
515 static void mwifiex_wmm_delete_all_ralist(struct mwifiex_private
*priv
)
517 struct mwifiex_ra_list_tbl
*ra_list
, *tmp_node
;
520 for (i
= 0; i
< MAX_NUM_TID
; ++i
) {
521 dev_dbg(priv
->adapter
->dev
,
522 "info: ra_list: freeing buf for tid %d\n", i
);
523 list_for_each_entry_safe(ra_list
, tmp_node
,
524 &priv
->wmm
.tid_tbl_ptr
[i
].ra_list
,
526 list_del(&ra_list
->list
);
530 INIT_LIST_HEAD(&priv
->wmm
.tid_tbl_ptr
[i
].ra_list
);
535 * This function cleans up the Tx and Rx queues.
538 * - All packets in RA lists
539 * - All entries in Rx reorder table
540 * - All entries in Tx BA stream table
541 * - MPA buffer (if required)
545 mwifiex_clean_txrx(struct mwifiex_private
*priv
)
548 struct sk_buff
*skb
, *tmp
;
550 mwifiex_11n_cleanup_reorder_tbl(priv
);
551 spin_lock_irqsave(&priv
->wmm
.ra_list_spinlock
, flags
);
553 mwifiex_wmm_cleanup_queues(priv
);
554 mwifiex_11n_delete_all_tx_ba_stream_tbl(priv
);
556 if (priv
->adapter
->if_ops
.cleanup_mpa_buf
)
557 priv
->adapter
->if_ops
.cleanup_mpa_buf(priv
->adapter
);
559 mwifiex_wmm_delete_all_ralist(priv
);
560 memcpy(tos_to_tid
, ac_to_tid
, sizeof(tos_to_tid
));
562 if (priv
->adapter
->if_ops
.clean_pcie_ring
&&
563 !priv
->adapter
->surprise_removed
)
564 priv
->adapter
->if_ops
.clean_pcie_ring(priv
->adapter
);
565 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
, flags
);
567 skb_queue_walk_safe(&priv
->tdls_txq
, skb
, tmp
)
568 mwifiex_write_data_complete(priv
->adapter
, skb
, 0, -1);
572 * This function retrieves a particular RA list node, matching with the
573 * given TID and RA address.
575 static struct mwifiex_ra_list_tbl
*
576 mwifiex_wmm_get_ralist_node(struct mwifiex_private
*priv
, u8 tid
,
579 struct mwifiex_ra_list_tbl
*ra_list
;
581 list_for_each_entry(ra_list
, &priv
->wmm
.tid_tbl_ptr
[tid
].ra_list
,
583 if (!memcmp(ra_list
->ra
, ra_addr
, ETH_ALEN
))
591 * This function retrieves an RA list node for a given TID and
594 * If no such node is found, a new node is added first and then
597 struct mwifiex_ra_list_tbl
*
598 mwifiex_wmm_get_queue_raptr(struct mwifiex_private
*priv
, u8 tid
,
601 struct mwifiex_ra_list_tbl
*ra_list
;
603 ra_list
= mwifiex_wmm_get_ralist_node(priv
, tid
, ra_addr
);
606 mwifiex_ralist_add(priv
, ra_addr
);
608 return mwifiex_wmm_get_ralist_node(priv
, tid
, ra_addr
);
612 * This function checks if a particular RA list node exists in a given TID
616 mwifiex_is_ralist_valid(struct mwifiex_private
*priv
,
617 struct mwifiex_ra_list_tbl
*ra_list
, int ptr_index
)
619 struct mwifiex_ra_list_tbl
*rlist
;
621 list_for_each_entry(rlist
, &priv
->wmm
.tid_tbl_ptr
[ptr_index
].ra_list
,
623 if (rlist
== ra_list
)
631 * This function adds a packet to WMM queue.
633 * In disconnected state the packet is immediately dropped and the
634 * packet send completion callback is called with status failure.
636 * Otherwise, the correct RA list node is located and the packet
637 * is queued at the list tail.
640 mwifiex_wmm_add_buf_txqueue(struct mwifiex_private
*priv
,
643 struct mwifiex_adapter
*adapter
= priv
->adapter
;
645 struct mwifiex_ra_list_tbl
*ra_list
;
646 u8 ra
[ETH_ALEN
], tid_down
;
648 struct list_head list_head
;
649 int tdls_status
= TDLS_NOT_SETUP
;
650 struct ethhdr
*eth_hdr
= (struct ethhdr
*)skb
->data
;
651 struct mwifiex_txinfo
*tx_info
= MWIFIEX_SKB_TXCB(skb
);
653 memcpy(ra
, eth_hdr
->h_dest
, ETH_ALEN
);
655 if (GET_BSS_ROLE(priv
) == MWIFIEX_BSS_ROLE_STA
&&
656 ISSUPP_TDLS_ENABLED(adapter
->fw_cap_info
)) {
657 if (ntohs(eth_hdr
->h_proto
) == ETH_P_TDLS
)
658 dev_dbg(adapter
->dev
,
659 "TDLS setup packet for %pM. Don't block\n", ra
);
661 tdls_status
= mwifiex_get_tdls_link_status(priv
, ra
);
664 if (!priv
->media_connected
&& !mwifiex_is_skb_mgmt_frame(skb
)) {
665 dev_dbg(adapter
->dev
, "data: drop packet in disconnect\n");
666 mwifiex_write_data_complete(adapter
, skb
, 0, -1);
672 spin_lock_irqsave(&priv
->wmm
.ra_list_spinlock
, flags
);
674 tid_down
= mwifiex_wmm_downgrade_tid(priv
, tid
);
676 /* In case of infra as we have already created the list during
677 association we just don't have to call get_queue_raptr, we will
678 have only 1 raptr for a tid in case of infra */
679 if (!mwifiex_queuing_ra_based(priv
) &&
680 !mwifiex_is_skb_mgmt_frame(skb
)) {
681 switch (tdls_status
) {
682 case TDLS_SETUP_COMPLETE
:
683 ra_list
= mwifiex_wmm_get_queue_raptr(priv
, tid_down
,
685 tx_info
->flags
|= MWIFIEX_BUF_FLAG_TDLS_PKT
;
687 case TDLS_SETUP_INPROGRESS
:
688 skb_queue_tail(&priv
->tdls_txq
, skb
);
689 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
,
693 list_head
= priv
->wmm
.tid_tbl_ptr
[tid_down
].ra_list
;
694 if (!list_empty(&list_head
))
695 ra_list
= list_first_entry(
696 &list_head
, struct mwifiex_ra_list_tbl
,
703 memcpy(ra
, skb
->data
, ETH_ALEN
);
704 if (ra
[0] & 0x01 || mwifiex_is_skb_mgmt_frame(skb
))
705 memset(ra
, 0xff, ETH_ALEN
);
706 ra_list
= mwifiex_wmm_get_queue_raptr(priv
, tid_down
, ra
);
710 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
, flags
);
711 mwifiex_write_data_complete(adapter
, skb
, 0, -1);
715 skb_queue_tail(&ra_list
->skb_head
, skb
);
717 ra_list
->ba_pkt_count
++;
718 ra_list
->total_pkt_count
++;
720 if (atomic_read(&priv
->wmm
.highest_queued_prio
) <
721 priv
->tos_to_tid_inv
[tid_down
])
722 atomic_set(&priv
->wmm
.highest_queued_prio
,
723 priv
->tos_to_tid_inv
[tid_down
]);
725 atomic_inc(&priv
->wmm
.tx_pkts_queued
);
727 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
, flags
);
731 * This function processes the get WMM status command response from firmware.
733 * The response may contain multiple TLVs -
734 * - AC Queue status TLVs
735 * - Current WMM Parameter IE TLV
736 * - Admission Control action frame TLVs
738 * This function parses the TLVs and then calls further specific functions
739 * to process any changes in the queue prioritize or state.
741 int mwifiex_ret_wmm_get_status(struct mwifiex_private
*priv
,
742 const struct host_cmd_ds_command
*resp
)
744 u8
*curr
= (u8
*) &resp
->params
.get_wmm_status
;
745 uint16_t resp_len
= le16_to_cpu(resp
->size
), tlv_len
;
748 struct mwifiex_ie_types_data
*tlv_hdr
;
749 struct mwifiex_ie_types_wmm_queue_status
*tlv_wmm_qstatus
;
750 struct ieee_types_wmm_parameter
*wmm_param_ie
= NULL
;
751 struct mwifiex_wmm_ac_status
*ac_status
;
753 dev_dbg(priv
->adapter
->dev
, "info: WMM: WMM_GET_STATUS cmdresp received: %d\n",
756 while ((resp_len
>= sizeof(tlv_hdr
->header
)) && valid
) {
757 tlv_hdr
= (struct mwifiex_ie_types_data
*) curr
;
758 tlv_len
= le16_to_cpu(tlv_hdr
->header
.len
);
760 if (resp_len
< tlv_len
+ sizeof(tlv_hdr
->header
))
763 switch (le16_to_cpu(tlv_hdr
->header
.type
)) {
764 case TLV_TYPE_WMMQSTATUS
:
766 (struct mwifiex_ie_types_wmm_queue_status
*)
768 dev_dbg(priv
->adapter
->dev
,
769 "info: CMD_RESP: WMM_GET_STATUS:"
770 " QSTATUS TLV: %d, %d, %d\n",
771 tlv_wmm_qstatus
->queue_index
,
772 tlv_wmm_qstatus
->flow_required
,
773 tlv_wmm_qstatus
->disabled
);
775 ac_status
= &priv
->wmm
.ac_status
[tlv_wmm_qstatus
->
777 ac_status
->disabled
= tlv_wmm_qstatus
->disabled
;
778 ac_status
->flow_required
=
779 tlv_wmm_qstatus
->flow_required
;
780 ac_status
->flow_created
= tlv_wmm_qstatus
->flow_created
;
783 case WLAN_EID_VENDOR_SPECIFIC
:
785 * Point the regular IEEE IE 2 bytes into the Marvell IE
786 * and setup the IEEE IE type and length byte fields
790 (struct ieee_types_wmm_parameter
*) (curr
+
792 wmm_param_ie
->vend_hdr
.len
= (u8
) tlv_len
;
793 wmm_param_ie
->vend_hdr
.element_id
=
794 WLAN_EID_VENDOR_SPECIFIC
;
796 dev_dbg(priv
->adapter
->dev
,
797 "info: CMD_RESP: WMM_GET_STATUS:"
798 " WMM Parameter Set Count: %d\n",
799 wmm_param_ie
->qos_info_bitmap
&
800 IEEE80211_WMM_IE_AP_QOSINFO_PARAM_SET_CNT_MASK
);
802 memcpy((u8
*) &priv
->curr_bss_params
.bss_descriptor
.
803 wmm_ie
, wmm_param_ie
,
804 wmm_param_ie
->vend_hdr
.len
+ 2);
813 curr
+= (tlv_len
+ sizeof(tlv_hdr
->header
));
814 resp_len
-= (tlv_len
+ sizeof(tlv_hdr
->header
));
817 mwifiex_wmm_setup_queue_priorities(priv
, wmm_param_ie
);
818 mwifiex_wmm_setup_ac_downgrade(priv
);
824 * Callback handler from the command module to allow insertion of a WMM TLV.
826 * If the BSS we are associating to supports WMM, this function adds the
827 * required WMM Information IE to the association request command buffer in
828 * the form of a Marvell extended IEEE IE.
831 mwifiex_wmm_process_association_req(struct mwifiex_private
*priv
,
833 struct ieee_types_wmm_parameter
*wmm_ie
,
834 struct ieee80211_ht_cap
*ht_cap
)
836 struct mwifiex_ie_types_wmm_param_set
*wmm_tlv
;
848 dev_dbg(priv
->adapter
->dev
,
849 "info: WMM: process assoc req: bss->wmm_ie=%#x\n",
850 wmm_ie
->vend_hdr
.element_id
);
852 if ((priv
->wmm_required
||
853 (ht_cap
&& (priv
->adapter
->config_bands
& BAND_GN
||
854 priv
->adapter
->config_bands
& BAND_AN
))) &&
855 wmm_ie
->vend_hdr
.element_id
== WLAN_EID_VENDOR_SPECIFIC
) {
856 wmm_tlv
= (struct mwifiex_ie_types_wmm_param_set
*) *assoc_buf
;
857 wmm_tlv
->header
.type
= cpu_to_le16((u16
) wmm_info_ie
[0]);
858 wmm_tlv
->header
.len
= cpu_to_le16((u16
) wmm_info_ie
[1]);
859 memcpy(wmm_tlv
->wmm_ie
, &wmm_info_ie
[2],
860 le16_to_cpu(wmm_tlv
->header
.len
));
861 if (wmm_ie
->qos_info_bitmap
& IEEE80211_WMM_IE_AP_QOSINFO_UAPSD
)
862 memcpy((u8
*) (wmm_tlv
->wmm_ie
863 + le16_to_cpu(wmm_tlv
->header
.len
)
864 - sizeof(priv
->wmm_qosinfo
)),
865 &priv
->wmm_qosinfo
, sizeof(priv
->wmm_qosinfo
));
867 ret_len
= sizeof(wmm_tlv
->header
)
868 + le16_to_cpu(wmm_tlv
->header
.len
);
870 *assoc_buf
+= ret_len
;
877 * This function computes the time delay in the driver queues for a
880 * When the packet is received at the OS/Driver interface, the current
881 * time is set in the packet structure. The difference between the present
882 * time and that received time is computed in this function and limited
883 * based on pre-compiled limits in the driver.
886 mwifiex_wmm_compute_drv_pkt_delay(struct mwifiex_private
*priv
,
887 const struct sk_buff
*skb
)
890 struct timeval out_tstamp
, in_tstamp
;
893 do_gettimeofday(&out_tstamp
);
894 in_tstamp
= ktime_to_timeval(skb
->tstamp
);
896 queue_delay
= (out_tstamp
.tv_sec
- in_tstamp
.tv_sec
) * 1000;
897 queue_delay
+= (out_tstamp
.tv_usec
- in_tstamp
.tv_usec
) / 1000;
900 * Queue delay is passed as a uint8 in units of 2ms (ms shifted
901 * by 1). Min value (other than 0) is therefore 2ms, max is 510ms.
903 * Pass max value if queue_delay is beyond the uint8 range
905 ret_val
= (u8
) (min(queue_delay
, priv
->wmm
.drv_pkt_delay_max
) >> 1);
907 dev_dbg(priv
->adapter
->dev
, "data: WMM: Pkt Delay: %d ms,"
908 " %d ms sent to FW\n", queue_delay
, ret_val
);
914 * This function retrieves the highest priority RA list table pointer.
916 static struct mwifiex_ra_list_tbl
*
917 mwifiex_wmm_get_highest_priolist_ptr(struct mwifiex_adapter
*adapter
,
918 struct mwifiex_private
**priv
, int *tid
)
920 struct mwifiex_private
*priv_tmp
;
921 struct mwifiex_ra_list_tbl
*ptr
;
922 struct mwifiex_tid_tbl
*tid_ptr
;
924 unsigned long flags_bss
, flags_ra
;
927 /* check the BSS with highest priority first */
928 for (j
= adapter
->priv_num
- 1; j
>= 0; --j
) {
929 spin_lock_irqsave(&adapter
->bss_prio_tbl
[j
].bss_prio_lock
,
932 /* iterate over BSS with the equal priority */
933 list_for_each_entry(adapter
->bss_prio_tbl
[j
].bss_prio_cur
,
934 &adapter
->bss_prio_tbl
[j
].bss_prio_head
,
937 priv_tmp
= adapter
->bss_prio_tbl
[j
].bss_prio_cur
->priv
;
939 if (atomic_read(&priv_tmp
->wmm
.tx_pkts_queued
) == 0)
942 /* iterate over the WMM queues of the BSS */
943 hqp
= &priv_tmp
->wmm
.highest_queued_prio
;
944 for (i
= atomic_read(hqp
); i
>= LOW_PRIO_TID
; --i
) {
946 spin_lock_irqsave(&priv_tmp
->wmm
.
947 ra_list_spinlock
, flags_ra
);
949 tid_ptr
= &(priv_tmp
)->wmm
.
950 tid_tbl_ptr
[tos_to_tid
[i
]];
952 /* iterate over receiver addresses */
953 list_for_each_entry(ptr
, &tid_ptr
->ra_list
,
956 if (!skb_queue_empty(&ptr
->skb_head
))
957 /* holds both locks */
961 spin_unlock_irqrestore(&priv_tmp
->wmm
.
967 spin_unlock_irqrestore(&adapter
->bss_prio_tbl
[j
].bss_prio_lock
,
974 /* holds bss_prio_lock / ra_list_spinlock */
975 if (atomic_read(hqp
) > i
)
977 spin_unlock_irqrestore(&priv_tmp
->wmm
.ra_list_spinlock
, flags_ra
);
978 spin_unlock_irqrestore(&adapter
->bss_prio_tbl
[j
].bss_prio_lock
,
982 *tid
= tos_to_tid
[i
];
987 /* This functions rotates ra and bss lists so packets are picked round robin.
989 * After a packet is successfully transmitted, rotate the ra list, so the ra
990 * next to the one transmitted, will come first in the list. This way we pick
991 * the ra' in a round robin fashion. Same applies to bss nodes of equal
994 * Function also increments wmm.packets_out counter.
996 void mwifiex_rotate_priolists(struct mwifiex_private
*priv
,
997 struct mwifiex_ra_list_tbl
*ra
,
1000 struct mwifiex_adapter
*adapter
= priv
->adapter
;
1001 struct mwifiex_bss_prio_tbl
*tbl
= adapter
->bss_prio_tbl
;
1002 struct mwifiex_tid_tbl
*tid_ptr
= &priv
->wmm
.tid_tbl_ptr
[tid
];
1003 unsigned long flags
;
1005 spin_lock_irqsave(&tbl
[priv
->bss_priority
].bss_prio_lock
, flags
);
1007 * dirty trick: we remove 'head' temporarily and reinsert it after
1008 * curr bss node. imagine list to stay fixed while head is moved
1010 list_move(&tbl
[priv
->bss_priority
].bss_prio_head
,
1011 &tbl
[priv
->bss_priority
].bss_prio_cur
->list
);
1012 spin_unlock_irqrestore(&tbl
[priv
->bss_priority
].bss_prio_lock
, flags
);
1014 spin_lock_irqsave(&priv
->wmm
.ra_list_spinlock
, flags
);
1015 if (mwifiex_is_ralist_valid(priv
, ra
, tid
)) {
1016 priv
->wmm
.packets_out
[tid
]++;
1018 list_move(&tid_ptr
->ra_list
, &ra
->list
);
1020 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
, flags
);
1024 * This function checks if 11n aggregation is possible.
1027 mwifiex_is_11n_aggragation_possible(struct mwifiex_private
*priv
,
1028 struct mwifiex_ra_list_tbl
*ptr
,
1031 int count
= 0, total_size
= 0;
1032 struct sk_buff
*skb
, *tmp
;
1035 if (priv
->bss_role
== MWIFIEX_BSS_ROLE_UAP
&& priv
->ap_11n_enabled
&&
1036 ptr
->is_11n_enabled
)
1037 max_amsdu_size
= min_t(int, ptr
->max_amsdu
, max_buf_size
);
1039 max_amsdu_size
= max_buf_size
;
1041 skb_queue_walk_safe(&ptr
->skb_head
, skb
, tmp
) {
1042 total_size
+= skb
->len
;
1043 if (total_size
>= max_amsdu_size
)
1045 if (++count
>= MIN_NUM_AMSDU
)
1053 * This function sends a single packet to firmware for transmission.
1056 mwifiex_send_single_packet(struct mwifiex_private
*priv
,
1057 struct mwifiex_ra_list_tbl
*ptr
, int ptr_index
,
1058 unsigned long ra_list_flags
)
1059 __releases(&priv
->wmm
.ra_list_spinlock
)
1061 struct sk_buff
*skb
, *skb_next
;
1062 struct mwifiex_tx_param tx_param
;
1063 struct mwifiex_adapter
*adapter
= priv
->adapter
;
1064 struct mwifiex_txinfo
*tx_info
;
1066 if (skb_queue_empty(&ptr
->skb_head
)) {
1067 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
,
1069 dev_dbg(adapter
->dev
, "data: nothing to send\n");
1073 skb
= skb_dequeue(&ptr
->skb_head
);
1075 tx_info
= MWIFIEX_SKB_TXCB(skb
);
1076 dev_dbg(adapter
->dev
, "data: dequeuing the packet %p %p\n", ptr
, skb
);
1078 ptr
->total_pkt_count
--;
1080 if (!skb_queue_empty(&ptr
->skb_head
))
1081 skb_next
= skb_peek(&ptr
->skb_head
);
1085 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
, ra_list_flags
);
1087 tx_param
.next_pkt_len
= ((skb_next
) ? skb_next
->len
+
1088 sizeof(struct txpd
) : 0);
1090 if (mwifiex_process_tx(priv
, skb
, &tx_param
) == -EBUSY
) {
1091 /* Queue the packet back at the head */
1092 spin_lock_irqsave(&priv
->wmm
.ra_list_spinlock
, ra_list_flags
);
1094 if (!mwifiex_is_ralist_valid(priv
, ptr
, ptr_index
)) {
1095 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
,
1097 mwifiex_write_data_complete(adapter
, skb
, 0, -1);
1101 skb_queue_tail(&ptr
->skb_head
, skb
);
1103 ptr
->total_pkt_count
++;
1104 ptr
->ba_pkt_count
++;
1105 tx_info
->flags
|= MWIFIEX_BUF_FLAG_REQUEUED_PKT
;
1106 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
,
1109 mwifiex_rotate_priolists(priv
, ptr
, ptr_index
);
1110 atomic_dec(&priv
->wmm
.tx_pkts_queued
);
1115 * This function checks if the first packet in the given RA list
1116 * is already processed or not.
1119 mwifiex_is_ptr_processed(struct mwifiex_private
*priv
,
1120 struct mwifiex_ra_list_tbl
*ptr
)
1122 struct sk_buff
*skb
;
1123 struct mwifiex_txinfo
*tx_info
;
1125 if (skb_queue_empty(&ptr
->skb_head
))
1128 skb
= skb_peek(&ptr
->skb_head
);
1130 tx_info
= MWIFIEX_SKB_TXCB(skb
);
1131 if (tx_info
->flags
& MWIFIEX_BUF_FLAG_REQUEUED_PKT
)
1138 * This function sends a single processed packet to firmware for
1142 mwifiex_send_processed_packet(struct mwifiex_private
*priv
,
1143 struct mwifiex_ra_list_tbl
*ptr
, int ptr_index
,
1144 unsigned long ra_list_flags
)
1145 __releases(&priv
->wmm
.ra_list_spinlock
)
1147 struct mwifiex_tx_param tx_param
;
1148 struct mwifiex_adapter
*adapter
= priv
->adapter
;
1150 struct sk_buff
*skb
, *skb_next
;
1151 struct mwifiex_txinfo
*tx_info
;
1153 if (skb_queue_empty(&ptr
->skb_head
)) {
1154 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
,
1159 skb
= skb_dequeue(&ptr
->skb_head
);
1161 if (!skb_queue_empty(&ptr
->skb_head
))
1162 skb_next
= skb_peek(&ptr
->skb_head
);
1166 tx_info
= MWIFIEX_SKB_TXCB(skb
);
1168 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
, ra_list_flags
);
1170 if (adapter
->iface_type
== MWIFIEX_USB
) {
1171 adapter
->data_sent
= true;
1172 ret
= adapter
->if_ops
.host_to_card(adapter
, MWIFIEX_USB_EP_DATA
,
1175 tx_param
.next_pkt_len
=
1176 ((skb_next
) ? skb_next
->len
+
1177 sizeof(struct txpd
) : 0);
1178 ret
= adapter
->if_ops
.host_to_card(adapter
, MWIFIEX_TYPE_DATA
,
1184 dev_dbg(adapter
->dev
, "data: -EBUSY is returned\n");
1185 spin_lock_irqsave(&priv
->wmm
.ra_list_spinlock
, ra_list_flags
);
1187 if (!mwifiex_is_ralist_valid(priv
, ptr
, ptr_index
)) {
1188 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
,
1190 mwifiex_write_data_complete(adapter
, skb
, 0, -1);
1194 skb_queue_tail(&ptr
->skb_head
, skb
);
1196 tx_info
->flags
|= MWIFIEX_BUF_FLAG_REQUEUED_PKT
;
1197 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
,
1201 if (adapter
->iface_type
!= MWIFIEX_PCIE
)
1202 adapter
->data_sent
= false;
1203 dev_err(adapter
->dev
, "host_to_card failed: %#x\n", ret
);
1204 adapter
->dbg
.num_tx_host_to_card_failure
++;
1205 mwifiex_write_data_complete(adapter
, skb
, 0, ret
);
1208 if (adapter
->iface_type
!= MWIFIEX_PCIE
)
1209 adapter
->data_sent
= false;
1213 if (ret
!= -EBUSY
) {
1214 mwifiex_rotate_priolists(priv
, ptr
, ptr_index
);
1215 atomic_dec(&priv
->wmm
.tx_pkts_queued
);
1220 * This function dequeues a packet from the highest priority list
1224 mwifiex_dequeue_tx_packet(struct mwifiex_adapter
*adapter
)
1226 struct mwifiex_ra_list_tbl
*ptr
;
1227 struct mwifiex_private
*priv
= NULL
;
1230 int tid_del
= 0, tid
= 0;
1231 unsigned long flags
;
1233 ptr
= mwifiex_wmm_get_highest_priolist_ptr(adapter
, &priv
, &ptr_index
);
1237 tid
= mwifiex_get_tid(ptr
);
1239 dev_dbg(adapter
->dev
, "data: tid=%d\n", tid
);
1241 spin_lock_irqsave(&priv
->wmm
.ra_list_spinlock
, flags
);
1242 if (!mwifiex_is_ralist_valid(priv
, ptr
, ptr_index
)) {
1243 spin_unlock_irqrestore(&priv
->wmm
.ra_list_spinlock
, flags
);
1247 if (mwifiex_is_ptr_processed(priv
, ptr
)) {
1248 mwifiex_send_processed_packet(priv
, ptr
, ptr_index
, flags
);
1249 /* ra_list_spinlock has been freed in
1250 mwifiex_send_processed_packet() */
1254 if (!ptr
->is_11n_enabled
||
1255 mwifiex_is_ba_stream_setup(priv
, ptr
, tid
) ||
1256 priv
->wps
.session_enable
) {
1257 if (ptr
->is_11n_enabled
&&
1258 mwifiex_is_ba_stream_setup(priv
, ptr
, tid
) &&
1259 mwifiex_is_amsdu_in_ampdu_allowed(priv
, ptr
, tid
) &&
1260 mwifiex_is_amsdu_allowed(priv
, tid
) &&
1261 mwifiex_is_11n_aggragation_possible(priv
, ptr
,
1262 adapter
->tx_buf_size
))
1263 mwifiex_11n_aggregate_pkt(priv
, ptr
, ptr_index
, flags
);
1264 /* ra_list_spinlock has been freed in
1265 * mwifiex_11n_aggregate_pkt()
1268 mwifiex_send_single_packet(priv
, ptr
, ptr_index
, flags
);
1269 /* ra_list_spinlock has been freed in
1270 * mwifiex_send_single_packet()
1273 if (mwifiex_is_ampdu_allowed(priv
, ptr
, tid
) &&
1274 ptr
->ba_pkt_count
> ptr
->ba_packet_thr
) {
1275 if (mwifiex_space_avail_for_new_ba_stream(adapter
)) {
1276 mwifiex_create_ba_tbl(priv
, ptr
->ra
, tid
,
1277 BA_SETUP_INPROGRESS
);
1278 mwifiex_send_addba(priv
, tid
, ptr
->ra
);
1279 } else if (mwifiex_find_stream_to_delete
1280 (priv
, tid
, &tid_del
, ra
)) {
1281 mwifiex_create_ba_tbl(priv
, ptr
->ra
, tid
,
1282 BA_SETUP_INPROGRESS
);
1283 mwifiex_send_delba(priv
, tid_del
, ra
, 1);
1286 if (mwifiex_is_amsdu_allowed(priv
, tid
) &&
1287 mwifiex_is_11n_aggragation_possible(priv
, ptr
,
1288 adapter
->tx_buf_size
))
1289 mwifiex_11n_aggregate_pkt(priv
, ptr
, ptr_index
, flags
);
1290 /* ra_list_spinlock has been freed in
1291 mwifiex_11n_aggregate_pkt() */
1293 mwifiex_send_single_packet(priv
, ptr
, ptr_index
, flags
);
1294 /* ra_list_spinlock has been freed in
1295 mwifiex_send_single_packet() */
1301 * This function transmits the highest priority packet awaiting in the
1305 mwifiex_wmm_process_tx(struct mwifiex_adapter
*adapter
)
1309 if (adapter
->data_sent
|| adapter
->tx_lock_flag
)
1312 if (mwifiex_dequeue_tx_packet(adapter
))
1314 } while (!mwifiex_wmm_lists_empty(adapter
));