2 * Marvell Wireless LAN device driver: 802.11n RX Re-ordering
4 * Copyright (C) 2011-2014, Marvell International Ltd.
6 * This software file (the "File") is distributed by Marvell International
7 * Ltd. under the terms of the GNU General Public License Version 2, June 1991
8 * (the "License"). You may use, redistribute and/or modify this File in
9 * accordance with the terms and conditions of the License, a copy of which
10 * is available by writing to the Free Software Foundation, Inc.,
11 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or on the
12 * worldwide web at http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt.
14 * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE
16 * ARE EXPRESSLY DISCLAIMED. The License provides additional details about
17 * this warranty disclaimer.
27 #include "11n_rxreorder.h"
29 /* This function will dispatch amsdu packet and forward it to kernel/upper
32 static int mwifiex_11n_dispatch_amsdu_pkt(struct mwifiex_private
*priv
,
35 struct rxpd
*local_rx_pd
= (struct rxpd
*)(skb
->data
);
38 if (le16_to_cpu(local_rx_pd
->rx_pkt_type
) == PKT_TYPE_AMSDU
) {
39 struct sk_buff_head list
;
40 struct sk_buff
*rx_skb
;
42 __skb_queue_head_init(&list
);
44 skb_pull(skb
, le16_to_cpu(local_rx_pd
->rx_pkt_offset
));
45 skb_trim(skb
, le16_to_cpu(local_rx_pd
->rx_pkt_length
));
47 ieee80211_amsdu_to_8023s(skb
, &list
, priv
->curr_addr
,
48 priv
->wdev
.iftype
, 0, false);
50 while (!skb_queue_empty(&list
)) {
51 struct rx_packet_hdr
*rx_hdr
;
53 rx_skb
= __skb_dequeue(&list
);
54 rx_hdr
= (struct rx_packet_hdr
*)rx_skb
->data
;
55 if (ISSUPP_TDLS_ENABLED(priv
->adapter
->fw_cap_info
) &&
56 ntohs(rx_hdr
->eth803_hdr
.h_proto
) == ETH_P_TDLS
) {
57 mwifiex_process_tdls_action_frame(priv
,
62 if (priv
->bss_role
== MWIFIEX_BSS_ROLE_UAP
)
63 ret
= mwifiex_uap_recv_packet(priv
, rx_skb
);
65 ret
= mwifiex_recv_packet(priv
, rx_skb
);
67 mwifiex_dbg(priv
->adapter
, ERROR
,
68 "Rx of A-MSDU failed");
76 /* This function will process the rx packet and forward it to kernel/upper
79 static int mwifiex_11n_dispatch_pkt(struct mwifiex_private
*priv
, void *payload
)
81 int ret
= mwifiex_11n_dispatch_amsdu_pkt(priv
, payload
);
86 if (priv
->bss_role
== MWIFIEX_BSS_ROLE_UAP
)
87 return mwifiex_handle_uap_rx_forward(priv
, payload
);
89 return mwifiex_process_rx_packet(priv
, payload
);
93 * This function dispatches all packets in the Rx reorder table until the
96 * There could be holes in the buffer, which are skipped by the function.
97 * Since the buffer is linear, the function uses rotation to simulate
101 mwifiex_11n_dispatch_pkt_until_start_win(struct mwifiex_private
*priv
,
102 struct mwifiex_rx_reorder_tbl
*tbl
,
109 pkt_to_send
= (start_win
> tbl
->start_win
) ?
110 min((start_win
- tbl
->start_win
), tbl
->win_size
) :
113 for (i
= 0; i
< pkt_to_send
; ++i
) {
114 spin_lock_irqsave(&priv
->rx_pkt_lock
, flags
);
116 if (tbl
->rx_reorder_ptr
[i
]) {
117 rx_tmp_ptr
= tbl
->rx_reorder_ptr
[i
];
118 tbl
->rx_reorder_ptr
[i
] = NULL
;
120 spin_unlock_irqrestore(&priv
->rx_pkt_lock
, flags
);
122 mwifiex_11n_dispatch_pkt(priv
, rx_tmp_ptr
);
125 spin_lock_irqsave(&priv
->rx_pkt_lock
, flags
);
127 * We don't have a circular buffer, hence use rotation to simulate
130 for (i
= 0; i
< tbl
->win_size
- pkt_to_send
; ++i
) {
131 tbl
->rx_reorder_ptr
[i
] = tbl
->rx_reorder_ptr
[pkt_to_send
+ i
];
132 tbl
->rx_reorder_ptr
[pkt_to_send
+ i
] = NULL
;
135 tbl
->start_win
= start_win
;
136 spin_unlock_irqrestore(&priv
->rx_pkt_lock
, flags
);
140 * This function dispatches all packets in the Rx reorder table until
143 * The start window is adjusted automatically when a hole is located.
144 * Since the buffer is linear, the function uses rotation to simulate
148 mwifiex_11n_scan_and_dispatch(struct mwifiex_private
*priv
,
149 struct mwifiex_rx_reorder_tbl
*tbl
)
155 for (i
= 0; i
< tbl
->win_size
; ++i
) {
156 spin_lock_irqsave(&priv
->rx_pkt_lock
, flags
);
157 if (!tbl
->rx_reorder_ptr
[i
]) {
158 spin_unlock_irqrestore(&priv
->rx_pkt_lock
, flags
);
161 rx_tmp_ptr
= tbl
->rx_reorder_ptr
[i
];
162 tbl
->rx_reorder_ptr
[i
] = NULL
;
163 spin_unlock_irqrestore(&priv
->rx_pkt_lock
, flags
);
164 mwifiex_11n_dispatch_pkt(priv
, rx_tmp_ptr
);
167 spin_lock_irqsave(&priv
->rx_pkt_lock
, flags
);
169 * We don't have a circular buffer, hence use rotation to simulate
173 xchg
= tbl
->win_size
- i
;
174 for (j
= 0; j
< xchg
; ++j
) {
175 tbl
->rx_reorder_ptr
[j
] = tbl
->rx_reorder_ptr
[i
+ j
];
176 tbl
->rx_reorder_ptr
[i
+ j
] = NULL
;
179 tbl
->start_win
= (tbl
->start_win
+ i
) & (MAX_TID_VALUE
- 1);
180 spin_unlock_irqrestore(&priv
->rx_pkt_lock
, flags
);
184 * This function deletes the Rx reorder table and frees the memory.
186 * The function stops the associated timer and dispatches all the
187 * pending packets in the Rx reorder table before deletion.
190 mwifiex_del_rx_reorder_entry(struct mwifiex_private
*priv
,
191 struct mwifiex_rx_reorder_tbl
*tbl
)
199 spin_lock_irqsave(&priv
->adapter
->rx_proc_lock
, flags
);
200 priv
->adapter
->rx_locked
= true;
201 if (priv
->adapter
->rx_processing
) {
202 spin_unlock_irqrestore(&priv
->adapter
->rx_proc_lock
, flags
);
203 flush_workqueue(priv
->adapter
->rx_workqueue
);
205 spin_unlock_irqrestore(&priv
->adapter
->rx_proc_lock
, flags
);
208 start_win
= (tbl
->start_win
+ tbl
->win_size
) & (MAX_TID_VALUE
- 1);
209 mwifiex_11n_dispatch_pkt_until_start_win(priv
, tbl
, start_win
);
211 del_timer_sync(&tbl
->timer_context
.timer
);
212 tbl
->timer_context
.timer_is_set
= false;
214 spin_lock_irqsave(&priv
->rx_reorder_tbl_lock
, flags
);
215 list_del(&tbl
->list
);
216 spin_unlock_irqrestore(&priv
->rx_reorder_tbl_lock
, flags
);
218 kfree(tbl
->rx_reorder_ptr
);
221 spin_lock_irqsave(&priv
->adapter
->rx_proc_lock
, flags
);
222 priv
->adapter
->rx_locked
= false;
223 spin_unlock_irqrestore(&priv
->adapter
->rx_proc_lock
, flags
);
228 * This function returns the pointer to an entry in Rx reordering
229 * table which matches the given TA/TID pair.
231 struct mwifiex_rx_reorder_tbl
*
232 mwifiex_11n_get_rx_reorder_tbl(struct mwifiex_private
*priv
, int tid
, u8
*ta
)
234 struct mwifiex_rx_reorder_tbl
*tbl
;
237 spin_lock_irqsave(&priv
->rx_reorder_tbl_lock
, flags
);
238 list_for_each_entry(tbl
, &priv
->rx_reorder_tbl_ptr
, list
) {
239 if (!memcmp(tbl
->ta
, ta
, ETH_ALEN
) && tbl
->tid
== tid
) {
240 spin_unlock_irqrestore(&priv
->rx_reorder_tbl_lock
,
245 spin_unlock_irqrestore(&priv
->rx_reorder_tbl_lock
, flags
);
250 /* This function retrieves the pointer to an entry in Rx reordering
251 * table which matches the given TA and deletes it.
253 void mwifiex_11n_del_rx_reorder_tbl_by_ta(struct mwifiex_private
*priv
, u8
*ta
)
255 struct mwifiex_rx_reorder_tbl
*tbl
, *tmp
;
261 spin_lock_irqsave(&priv
->rx_reorder_tbl_lock
, flags
);
262 list_for_each_entry_safe(tbl
, tmp
, &priv
->rx_reorder_tbl_ptr
, list
) {
263 if (!memcmp(tbl
->ta
, ta
, ETH_ALEN
)) {
264 spin_unlock_irqrestore(&priv
->rx_reorder_tbl_lock
,
266 mwifiex_del_rx_reorder_entry(priv
, tbl
);
267 spin_lock_irqsave(&priv
->rx_reorder_tbl_lock
, flags
);
270 spin_unlock_irqrestore(&priv
->rx_reorder_tbl_lock
, flags
);
276 * This function finds the last sequence number used in the packets
277 * buffered in Rx reordering table.
280 mwifiex_11n_find_last_seq_num(struct reorder_tmr_cnxt
*ctx
)
282 struct mwifiex_rx_reorder_tbl
*rx_reorder_tbl_ptr
= ctx
->ptr
;
283 struct mwifiex_private
*priv
= ctx
->priv
;
287 spin_lock_irqsave(&priv
->rx_reorder_tbl_lock
, flags
);
288 for (i
= rx_reorder_tbl_ptr
->win_size
- 1; i
>= 0; --i
) {
289 if (rx_reorder_tbl_ptr
->rx_reorder_ptr
[i
]) {
290 spin_unlock_irqrestore(&priv
->rx_reorder_tbl_lock
,
295 spin_unlock_irqrestore(&priv
->rx_reorder_tbl_lock
, flags
);
301 * This function flushes all the packets in Rx reordering table.
303 * The function checks if any packets are currently buffered in the
304 * table or not. In case there are packets available, it dispatches
305 * them and then dumps the Rx reordering table.
308 mwifiex_flush_data(unsigned long context
)
310 struct reorder_tmr_cnxt
*ctx
=
311 (struct reorder_tmr_cnxt
*) context
;
312 int start_win
, seq_num
;
314 ctx
->timer_is_set
= false;
315 seq_num
= mwifiex_11n_find_last_seq_num(ctx
);
320 mwifiex_dbg(ctx
->priv
->adapter
, INFO
, "info: flush data %d\n", seq_num
);
321 start_win
= (ctx
->ptr
->start_win
+ seq_num
+ 1) & (MAX_TID_VALUE
- 1);
322 mwifiex_11n_dispatch_pkt_until_start_win(ctx
->priv
, ctx
->ptr
,
327 * This function creates an entry in Rx reordering table for the
330 * The function also initializes the entry with sequence number, window
331 * size as well as initializes the timer.
333 * If the received TA/TID pair is already present, all the packets are
334 * dispatched and the window size is moved until the SSN.
337 mwifiex_11n_create_rx_reorder_tbl(struct mwifiex_private
*priv
, u8
*ta
,
338 int tid
, int win_size
, int seq_num
)
341 struct mwifiex_rx_reorder_tbl
*tbl
, *new_node
;
344 struct mwifiex_sta_node
*node
;
347 * If we get a TID, ta pair which is already present dispatch all the
348 * the packets and move the window size until the ssn
350 tbl
= mwifiex_11n_get_rx_reorder_tbl(priv
, tid
, ta
);
352 mwifiex_11n_dispatch_pkt_until_start_win(priv
, tbl
, seq_num
);
355 /* if !tbl then create one */
356 new_node
= kzalloc(sizeof(struct mwifiex_rx_reorder_tbl
), GFP_KERNEL
);
360 INIT_LIST_HEAD(&new_node
->list
);
362 memcpy(new_node
->ta
, ta
, ETH_ALEN
);
363 new_node
->start_win
= seq_num
;
364 new_node
->init_win
= seq_num
;
367 spin_lock_irqsave(&priv
->sta_list_spinlock
, flags
);
368 if (mwifiex_queuing_ra_based(priv
)) {
369 if (priv
->bss_role
== MWIFIEX_BSS_ROLE_UAP
) {
370 node
= mwifiex_get_sta_entry(priv
, ta
);
372 last_seq
= node
->rx_seq
[tid
];
375 node
= mwifiex_get_sta_entry(priv
, ta
);
377 last_seq
= node
->rx_seq
[tid
];
379 last_seq
= priv
->rx_seq
[tid
];
381 spin_unlock_irqrestore(&priv
->sta_list_spinlock
, flags
);
383 mwifiex_dbg(priv
->adapter
, INFO
,
384 "info: last_seq=%d start_win=%d\n",
385 last_seq
, new_node
->start_win
);
387 if (last_seq
!= MWIFIEX_DEF_11N_RX_SEQ_NUM
&&
388 last_seq
>= new_node
->start_win
) {
389 new_node
->start_win
= last_seq
+ 1;
390 new_node
->flags
|= RXREOR_INIT_WINDOW_SHIFT
;
393 new_node
->win_size
= win_size
;
395 new_node
->rx_reorder_ptr
= kzalloc(sizeof(void *) * win_size
,
397 if (!new_node
->rx_reorder_ptr
) {
398 kfree((u8
*) new_node
);
399 mwifiex_dbg(priv
->adapter
, ERROR
,
400 "%s: failed to alloc reorder_ptr\n", __func__
);
404 new_node
->timer_context
.ptr
= new_node
;
405 new_node
->timer_context
.priv
= priv
;
406 new_node
->timer_context
.timer_is_set
= false;
408 setup_timer(&new_node
->timer_context
.timer
, mwifiex_flush_data
,
409 (unsigned long)&new_node
->timer_context
);
411 for (i
= 0; i
< win_size
; ++i
)
412 new_node
->rx_reorder_ptr
[i
] = NULL
;
414 spin_lock_irqsave(&priv
->rx_reorder_tbl_lock
, flags
);
415 list_add_tail(&new_node
->list
, &priv
->rx_reorder_tbl_ptr
);
416 spin_unlock_irqrestore(&priv
->rx_reorder_tbl_lock
, flags
);
420 mwifiex_11n_rxreorder_timer_restart(struct mwifiex_rx_reorder_tbl
*tbl
)
424 if (tbl
->win_size
>= MWIFIEX_BA_WIN_SIZE_32
)
425 min_flush_time
= MIN_FLUSH_TIMER_15_MS
;
427 min_flush_time
= MIN_FLUSH_TIMER_MS
;
429 mod_timer(&tbl
->timer_context
.timer
,
430 jiffies
+ msecs_to_jiffies(min_flush_time
* tbl
->win_size
));
432 tbl
->timer_context
.timer_is_set
= true;
436 * This function prepares command for adding a BA request.
438 * Preparation includes -
439 * - Setting command ID and proper size
440 * - Setting add BA request buffer
441 * - Ensuring correct endian-ness
443 int mwifiex_cmd_11n_addba_req(struct host_cmd_ds_command
*cmd
, void *data_buf
)
445 struct host_cmd_ds_11n_addba_req
*add_ba_req
= &cmd
->params
.add_ba_req
;
447 cmd
->command
= cpu_to_le16(HostCmd_CMD_11N_ADDBA_REQ
);
448 cmd
->size
= cpu_to_le16(sizeof(*add_ba_req
) + S_DS_GEN
);
449 memcpy(add_ba_req
, data_buf
, sizeof(*add_ba_req
));
455 * This function prepares command for adding a BA response.
457 * Preparation includes -
458 * - Setting command ID and proper size
459 * - Setting add BA response buffer
460 * - Ensuring correct endian-ness
462 int mwifiex_cmd_11n_addba_rsp_gen(struct mwifiex_private
*priv
,
463 struct host_cmd_ds_command
*cmd
,
464 struct host_cmd_ds_11n_addba_req
467 struct host_cmd_ds_11n_addba_rsp
*add_ba_rsp
= &cmd
->params
.add_ba_rsp
;
468 struct mwifiex_sta_node
*sta_ptr
;
469 u32 rx_win_size
= priv
->add_ba_param
.rx_win_size
;
473 uint16_t block_ack_param_set
;
475 if ((GET_BSS_ROLE(priv
) == MWIFIEX_BSS_ROLE_STA
) &&
476 ISSUPP_TDLS_ENABLED(priv
->adapter
->fw_cap_info
) &&
477 priv
->adapter
->is_hw_11ac_capable
&&
478 memcmp(priv
->cfg_bssid
, cmd_addba_req
->peer_mac_addr
, ETH_ALEN
)) {
479 spin_lock_irqsave(&priv
->sta_list_spinlock
, flags
);
480 sta_ptr
= mwifiex_get_sta_entry(priv
,
481 cmd_addba_req
->peer_mac_addr
);
483 spin_unlock_irqrestore(&priv
->sta_list_spinlock
, flags
);
484 mwifiex_dbg(priv
->adapter
, ERROR
,
485 "BA setup with unknown TDLS peer %pM!\n",
486 cmd_addba_req
->peer_mac_addr
);
489 if (sta_ptr
->is_11ac_enabled
)
490 rx_win_size
= MWIFIEX_11AC_STA_AMPDU_DEF_RXWINSIZE
;
491 spin_unlock_irqrestore(&priv
->sta_list_spinlock
, flags
);
494 cmd
->command
= cpu_to_le16(HostCmd_CMD_11N_ADDBA_RSP
);
495 cmd
->size
= cpu_to_le16(sizeof(*add_ba_rsp
) + S_DS_GEN
);
497 memcpy(add_ba_rsp
->peer_mac_addr
, cmd_addba_req
->peer_mac_addr
,
499 add_ba_rsp
->dialog_token
= cmd_addba_req
->dialog_token
;
500 add_ba_rsp
->block_ack_tmo
= cmd_addba_req
->block_ack_tmo
;
501 add_ba_rsp
->ssn
= cmd_addba_req
->ssn
;
503 block_ack_param_set
= le16_to_cpu(cmd_addba_req
->block_ack_param_set
);
504 tid
= (block_ack_param_set
& IEEE80211_ADDBA_PARAM_TID_MASK
)
505 >> BLOCKACKPARAM_TID_POS
;
506 add_ba_rsp
->status_code
= cpu_to_le16(ADDBA_RSP_STATUS_ACCEPT
);
507 block_ack_param_set
&= ~IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK
;
509 /* If we don't support AMSDU inside AMPDU, reset the bit */
510 if (!priv
->add_ba_param
.rx_amsdu
||
511 (priv
->aggr_prio_tbl
[tid
].amsdu
== BA_STREAM_NOT_ALLOWED
))
512 block_ack_param_set
&= ~BLOCKACKPARAM_AMSDU_SUPP_MASK
;
513 block_ack_param_set
|= rx_win_size
<< BLOCKACKPARAM_WINSIZE_POS
;
514 add_ba_rsp
->block_ack_param_set
= cpu_to_le16(block_ack_param_set
);
515 win_size
= (le16_to_cpu(add_ba_rsp
->block_ack_param_set
)
516 & IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK
)
517 >> BLOCKACKPARAM_WINSIZE_POS
;
518 cmd_addba_req
->block_ack_param_set
= cpu_to_le16(block_ack_param_set
);
520 mwifiex_11n_create_rx_reorder_tbl(priv
, cmd_addba_req
->peer_mac_addr
,
522 le16_to_cpu(cmd_addba_req
->ssn
));
527 * This function prepares command for deleting a BA request.
529 * Preparation includes -
530 * - Setting command ID and proper size
531 * - Setting del BA request buffer
532 * - Ensuring correct endian-ness
534 int mwifiex_cmd_11n_delba(struct host_cmd_ds_command
*cmd
, void *data_buf
)
536 struct host_cmd_ds_11n_delba
*del_ba
= &cmd
->params
.del_ba
;
538 cmd
->command
= cpu_to_le16(HostCmd_CMD_11N_DELBA
);
539 cmd
->size
= cpu_to_le16(sizeof(*del_ba
) + S_DS_GEN
);
540 memcpy(del_ba
, data_buf
, sizeof(*del_ba
));
546 * This function identifies if Rx reordering is needed for a received packet.
548 * In case reordering is required, the function will do the reordering
549 * before sending it to kernel.
551 * The Rx reorder table is checked first with the received TID/TA pair. If
552 * not found, the received packet is dispatched immediately. But if found,
553 * the packet is reordered and all the packets in the updated Rx reordering
554 * table is dispatched until a hole is found.
556 * For sequence number less than the starting window, the packet is dropped.
558 int mwifiex_11n_rx_reorder_pkt(struct mwifiex_private
*priv
,
559 u16 seq_num
, u16 tid
,
560 u8
*ta
, u8 pkt_type
, void *payload
)
562 struct mwifiex_rx_reorder_tbl
*tbl
;
563 int prev_start_win
, start_win
, end_win
, win_size
;
565 bool init_window_shift
= false;
568 tbl
= mwifiex_11n_get_rx_reorder_tbl(priv
, tid
, ta
);
570 if (pkt_type
!= PKT_TYPE_BAR
)
571 mwifiex_11n_dispatch_pkt(priv
, payload
);
575 if ((pkt_type
== PKT_TYPE_AMSDU
) && !tbl
->amsdu
) {
576 mwifiex_11n_dispatch_pkt(priv
, payload
);
580 start_win
= tbl
->start_win
;
581 prev_start_win
= start_win
;
582 win_size
= tbl
->win_size
;
583 end_win
= ((start_win
+ win_size
) - 1) & (MAX_TID_VALUE
- 1);
584 if (tbl
->flags
& RXREOR_INIT_WINDOW_SHIFT
) {
585 init_window_shift
= true;
586 tbl
->flags
&= ~RXREOR_INIT_WINDOW_SHIFT
;
589 if (tbl
->flags
& RXREOR_FORCE_NO_DROP
) {
590 mwifiex_dbg(priv
->adapter
, INFO
,
591 "RXREOR_FORCE_NO_DROP when HS is activated\n");
592 tbl
->flags
&= ~RXREOR_FORCE_NO_DROP
;
593 } else if (init_window_shift
&& seq_num
< start_win
&&
594 seq_num
>= tbl
->init_win
) {
595 mwifiex_dbg(priv
->adapter
, INFO
,
596 "Sender TID sequence number reset %d->%d for SSN %d\n",
597 start_win
, seq_num
, tbl
->init_win
);
598 tbl
->start_win
= start_win
= seq_num
;
599 end_win
= ((start_win
+ win_size
) - 1) & (MAX_TID_VALUE
- 1);
602 * If seq_num is less then starting win then ignore and drop
605 if ((start_win
+ TWOPOW11
) > (MAX_TID_VALUE
- 1)) {
606 if (seq_num
>= ((start_win
+ TWOPOW11
) &
607 (MAX_TID_VALUE
- 1)) &&
608 seq_num
< start_win
) {
612 } else if ((seq_num
< start_win
) ||
613 (seq_num
>= (start_win
+ TWOPOW11
))) {
620 * If this packet is a BAR we adjust seq_num as
623 if (pkt_type
== PKT_TYPE_BAR
)
624 seq_num
= ((seq_num
+ win_size
) - 1) & (MAX_TID_VALUE
- 1);
626 if (((end_win
< start_win
) &&
627 (seq_num
< start_win
) && (seq_num
> end_win
)) ||
628 ((end_win
> start_win
) && ((seq_num
> end_win
) ||
629 (seq_num
< start_win
)))) {
631 if (((end_win
- win_size
) + 1) >= 0)
632 start_win
= (end_win
- win_size
) + 1;
634 start_win
= (MAX_TID_VALUE
- (win_size
- end_win
)) + 1;
635 mwifiex_11n_dispatch_pkt_until_start_win(priv
, tbl
, start_win
);
638 if (pkt_type
!= PKT_TYPE_BAR
) {
639 if (seq_num
>= start_win
)
640 pkt_index
= seq_num
- start_win
;
642 pkt_index
= (seq_num
+MAX_TID_VALUE
) - start_win
;
644 if (tbl
->rx_reorder_ptr
[pkt_index
]) {
649 tbl
->rx_reorder_ptr
[pkt_index
] = payload
;
653 * Dispatch all packets sequentially from start_win until a
654 * hole is found and adjust the start_win appropriately
656 mwifiex_11n_scan_and_dispatch(priv
, tbl
);
659 if (!tbl
->timer_context
.timer_is_set
||
660 prev_start_win
!= tbl
->start_win
)
661 mwifiex_11n_rxreorder_timer_restart(tbl
);
666 * This function deletes an entry for a given TID/TA pair.
668 * The TID/TA are taken from del BA event body.
671 mwifiex_del_ba_tbl(struct mwifiex_private
*priv
, int tid
, u8
*peer_mac
,
672 u8 type
, int initiator
)
674 struct mwifiex_rx_reorder_tbl
*tbl
;
675 struct mwifiex_tx_ba_stream_tbl
*ptx_tbl
;
676 struct mwifiex_ra_list_tbl
*ra_list
;
677 u8 cleanup_rx_reorder_tbl
;
681 if (type
== TYPE_DELBA_RECEIVE
)
682 cleanup_rx_reorder_tbl
= (initiator
) ? true : false;
684 cleanup_rx_reorder_tbl
= (initiator
) ? false : true;
686 mwifiex_dbg(priv
->adapter
, EVENT
, "event: DELBA: %pM tid=%d initiator=%d\n",
687 peer_mac
, tid
, initiator
);
689 if (cleanup_rx_reorder_tbl
) {
690 tbl
= mwifiex_11n_get_rx_reorder_tbl(priv
, tid
,
693 mwifiex_dbg(priv
->adapter
, EVENT
,
694 "event: TID, TA not found in table\n");
697 mwifiex_del_rx_reorder_entry(priv
, tbl
);
699 ptx_tbl
= mwifiex_get_ba_tbl(priv
, tid
, peer_mac
);
701 mwifiex_dbg(priv
->adapter
, EVENT
,
702 "event: TID, RA not found in table\n");
706 tid_down
= mwifiex_wmm_downgrade_tid(priv
, tid
);
707 ra_list
= mwifiex_wmm_get_ralist_node(priv
, tid_down
, peer_mac
);
709 ra_list
->amsdu_in_ampdu
= false;
710 ra_list
->ba_status
= BA_SETUP_NONE
;
712 spin_lock_irqsave(&priv
->tx_ba_stream_tbl_lock
, flags
);
713 mwifiex_11n_delete_tx_ba_stream_tbl_entry(priv
, ptx_tbl
);
714 spin_unlock_irqrestore(&priv
->tx_ba_stream_tbl_lock
, flags
);
719 * This function handles the command response of an add BA response.
721 * Handling includes changing the header fields into CPU format and
722 * creating the stream, provided the add BA is accepted.
724 int mwifiex_ret_11n_addba_resp(struct mwifiex_private
*priv
,
725 struct host_cmd_ds_command
*resp
)
727 struct host_cmd_ds_11n_addba_rsp
*add_ba_rsp
= &resp
->params
.add_ba_rsp
;
729 struct mwifiex_rx_reorder_tbl
*tbl
;
730 uint16_t block_ack_param_set
;
732 block_ack_param_set
= le16_to_cpu(add_ba_rsp
->block_ack_param_set
);
734 tid
= (block_ack_param_set
& IEEE80211_ADDBA_PARAM_TID_MASK
)
735 >> BLOCKACKPARAM_TID_POS
;
737 * Check if we had rejected the ADDBA, if yes then do not create
740 if (le16_to_cpu(add_ba_rsp
->status_code
) != BA_RESULT_SUCCESS
) {
741 mwifiex_dbg(priv
->adapter
, ERROR
, "ADDBA RSP: failed %pM tid=%d)\n",
742 add_ba_rsp
->peer_mac_addr
, tid
);
744 tbl
= mwifiex_11n_get_rx_reorder_tbl(priv
, tid
,
745 add_ba_rsp
->peer_mac_addr
);
747 mwifiex_del_rx_reorder_entry(priv
, tbl
);
752 win_size
= (block_ack_param_set
& IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK
)
753 >> BLOCKACKPARAM_WINSIZE_POS
;
755 tbl
= mwifiex_11n_get_rx_reorder_tbl(priv
, tid
,
756 add_ba_rsp
->peer_mac_addr
);
758 if ((block_ack_param_set
& BLOCKACKPARAM_AMSDU_SUPP_MASK
) &&
759 priv
->add_ba_param
.rx_amsdu
&&
760 (priv
->aggr_prio_tbl
[tid
].amsdu
!= BA_STREAM_NOT_ALLOWED
))
766 mwifiex_dbg(priv
->adapter
, CMD
,
767 "cmd: ADDBA RSP: %pM tid=%d ssn=%d win_size=%d\n",
768 add_ba_rsp
->peer_mac_addr
, tid
, add_ba_rsp
->ssn
, win_size
);
774 * This function handles BA stream timeout event by preparing and sending
775 * a command to the firmware.
777 void mwifiex_11n_ba_stream_timeout(struct mwifiex_private
*priv
,
778 struct host_cmd_ds_11n_batimeout
*event
)
780 struct host_cmd_ds_11n_delba delba
;
782 memset(&delba
, 0, sizeof(struct host_cmd_ds_11n_delba
));
783 memcpy(delba
.peer_mac_addr
, event
->peer_mac_addr
, ETH_ALEN
);
785 delba
.del_ba_param_set
|=
786 cpu_to_le16((u16
) event
->tid
<< DELBA_TID_POS
);
787 delba
.del_ba_param_set
|= cpu_to_le16(
788 (u16
) event
->origninator
<< DELBA_INITIATOR_POS
);
789 delba
.reason_code
= cpu_to_le16(WLAN_REASON_QSTA_TIMEOUT
);
790 mwifiex_send_cmd(priv
, HostCmd_CMD_11N_DELBA
, 0, 0, &delba
, false);
794 * This function cleans up the Rx reorder table by deleting all the entries
795 * and re-initializing.
797 void mwifiex_11n_cleanup_reorder_tbl(struct mwifiex_private
*priv
)
799 struct mwifiex_rx_reorder_tbl
*del_tbl_ptr
, *tmp_node
;
802 spin_lock_irqsave(&priv
->rx_reorder_tbl_lock
, flags
);
803 list_for_each_entry_safe(del_tbl_ptr
, tmp_node
,
804 &priv
->rx_reorder_tbl_ptr
, list
) {
805 spin_unlock_irqrestore(&priv
->rx_reorder_tbl_lock
, flags
);
806 mwifiex_del_rx_reorder_entry(priv
, del_tbl_ptr
);
807 spin_lock_irqsave(&priv
->rx_reorder_tbl_lock
, flags
);
809 INIT_LIST_HEAD(&priv
->rx_reorder_tbl_ptr
);
810 spin_unlock_irqrestore(&priv
->rx_reorder_tbl_lock
, flags
);
812 mwifiex_reset_11n_rx_seq_num(priv
);
816 * This function updates all rx_reorder_tbl's flags.
818 void mwifiex_update_rxreor_flags(struct mwifiex_adapter
*adapter
, u8 flags
)
820 struct mwifiex_private
*priv
;
821 struct mwifiex_rx_reorder_tbl
*tbl
;
822 unsigned long lock_flags
;
825 for (i
= 0; i
< adapter
->priv_num
; i
++) {
826 priv
= adapter
->priv
[i
];
830 spin_lock_irqsave(&priv
->rx_reorder_tbl_lock
, lock_flags
);
831 if (list_empty(&priv
->rx_reorder_tbl_ptr
)) {
832 spin_unlock_irqrestore(&priv
->rx_reorder_tbl_lock
,
837 list_for_each_entry(tbl
, &priv
->rx_reorder_tbl_ptr
, list
)
839 spin_unlock_irqrestore(&priv
->rx_reorder_tbl_lock
, lock_flags
);
845 /* This function update all the rx_win_size based on coex flag
847 static void mwifiex_update_ampdu_rxwinsize(struct mwifiex_adapter
*adapter
,
852 struct mwifiex_private
*priv
;
854 dev_dbg(adapter
->dev
, "Update rxwinsize %d\n", coex_flag
);
856 for (i
= 0; i
< adapter
->priv_num
; i
++) {
857 if (!adapter
->priv
[i
])
859 priv
= adapter
->priv
[i
];
860 rx_win_size
= priv
->add_ba_param
.rx_win_size
;
862 if (priv
->bss_type
== MWIFIEX_BSS_TYPE_STA
)
863 priv
->add_ba_param
.rx_win_size
=
864 MWIFIEX_STA_COEX_AMPDU_DEF_RXWINSIZE
;
865 if (priv
->bss_type
== MWIFIEX_BSS_TYPE_P2P
)
866 priv
->add_ba_param
.rx_win_size
=
867 MWIFIEX_STA_COEX_AMPDU_DEF_RXWINSIZE
;
868 if (priv
->bss_type
== MWIFIEX_BSS_TYPE_UAP
)
869 priv
->add_ba_param
.rx_win_size
=
870 MWIFIEX_UAP_COEX_AMPDU_DEF_RXWINSIZE
;
872 if (priv
->bss_type
== MWIFIEX_BSS_TYPE_STA
)
873 priv
->add_ba_param
.rx_win_size
=
874 MWIFIEX_STA_AMPDU_DEF_RXWINSIZE
;
875 if (priv
->bss_type
== MWIFIEX_BSS_TYPE_P2P
)
876 priv
->add_ba_param
.rx_win_size
=
877 MWIFIEX_STA_AMPDU_DEF_RXWINSIZE
;
878 if (priv
->bss_type
== MWIFIEX_BSS_TYPE_UAP
)
879 priv
->add_ba_param
.rx_win_size
=
880 MWIFIEX_UAP_AMPDU_DEF_RXWINSIZE
;
883 if (adapter
->coex_win_size
&& adapter
->coex_rx_win_size
)
884 priv
->add_ba_param
.rx_win_size
=
885 adapter
->coex_rx_win_size
;
887 if (rx_win_size
!= priv
->add_ba_param
.rx_win_size
) {
888 if (!priv
->media_connected
)
890 for (i
= 0; i
< MAX_NUM_TID
; i
++)
891 mwifiex_11n_delba(priv
, i
);
896 /* This function check coex for RX BA
898 void mwifiex_coex_ampdu_rxwinsize(struct mwifiex_adapter
*adapter
)
901 struct mwifiex_private
*priv
;
904 for (i
= 0; i
< adapter
->priv_num
; i
++) {
905 if (adapter
->priv
[i
]) {
906 priv
= adapter
->priv
[i
];
907 if (GET_BSS_ROLE(priv
) == MWIFIEX_BSS_ROLE_STA
) {
908 if (priv
->media_connected
)
911 if (GET_BSS_ROLE(priv
) == MWIFIEX_BSS_ROLE_UAP
) {
912 if (priv
->bss_started
)
916 if (count
>= MWIFIEX_BSS_COEX_COUNT
)
919 if (count
>= MWIFIEX_BSS_COEX_COUNT
)
920 mwifiex_update_ampdu_rxwinsize(adapter
, true);
922 mwifiex_update_ampdu_rxwinsize(adapter
, false);