Commit | Line | Data |
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5e6e3a92 BZ |
1 | /* |
2 | * Marvell Wireless LAN device driver: 802.11n RX Re-ordering | |
3 | * | |
65da33f5 | 4 | * Copyright (C) 2011-2014, Marvell International Ltd. |
5e6e3a92 BZ |
5 | * |
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. | |
13 | * | |
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. | |
18 | */ | |
19 | ||
20 | #include "decl.h" | |
21 | #include "ioctl.h" | |
22 | #include "util.h" | |
23 | #include "fw.h" | |
24 | #include "main.h" | |
25 | #include "wmm.h" | |
26 | #include "11n.h" | |
27 | #include "11n_rxreorder.h" | |
28 | ||
4c9f9fb2 AK |
29 | /* This function will dispatch amsdu packet and forward it to kernel/upper |
30 | * layer. | |
31 | */ | |
32 | static int mwifiex_11n_dispatch_amsdu_pkt(struct mwifiex_private *priv, | |
33 | struct sk_buff *skb) | |
34 | { | |
35 | struct rxpd *local_rx_pd = (struct rxpd *)(skb->data); | |
36 | int ret; | |
37 | ||
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; | |
41 | ||
42 | __skb_queue_head_init(&list); | |
43 | ||
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)); | |
46 | ||
47 | ieee80211_amsdu_to_8023s(skb, &list, priv->curr_addr, | |
4facc34a | 48 | priv->wdev.iftype, 0, false); |
4c9f9fb2 AK |
49 | |
50 | while (!skb_queue_empty(&list)) { | |
51 | rx_skb = __skb_dequeue(&list); | |
52 | ret = mwifiex_recv_packet(priv, rx_skb); | |
53 | if (ret == -1) | |
acebe8c1 ZL |
54 | mwifiex_dbg(priv->adapter, ERROR, |
55 | "Rx of A-MSDU failed"); | |
4c9f9fb2 AK |
56 | } |
57 | return 0; | |
58 | } | |
59 | ||
60 | return -1; | |
61 | } | |
62 | ||
5e6e43eb AK |
63 | /* This function will process the rx packet and forward it to kernel/upper |
64 | * layer. | |
65 | */ | |
66 | static int mwifiex_11n_dispatch_pkt(struct mwifiex_private *priv, void *payload) | |
67 | { | |
4c9f9fb2 AK |
68 | int ret = mwifiex_11n_dispatch_amsdu_pkt(priv, payload); |
69 | ||
70 | if (!ret) | |
71 | return 0; | |
72 | ||
5e6e43eb AK |
73 | if (priv->bss_role == MWIFIEX_BSS_ROLE_UAP) |
74 | return mwifiex_handle_uap_rx_forward(priv, payload); | |
75 | ||
76 | return mwifiex_process_rx_packet(priv, payload); | |
77 | } | |
78 | ||
5e6e3a92 | 79 | /* |
8c00228e YAP |
80 | * This function dispatches all packets in the Rx reorder table until the |
81 | * start window. | |
5e6e3a92 BZ |
82 | * |
83 | * There could be holes in the buffer, which are skipped by the function. | |
84 | * Since the buffer is linear, the function uses rotation to simulate | |
85 | * circular buffer. | |
86 | */ | |
ab581472 | 87 | static void |
5e6e43eb AK |
88 | mwifiex_11n_dispatch_pkt_until_start_win(struct mwifiex_private *priv, |
89 | struct mwifiex_rx_reorder_tbl *tbl, | |
90 | int start_win) | |
5e6e3a92 | 91 | { |
8c00228e | 92 | int pkt_to_send, i; |
270e58e8 | 93 | void *rx_tmp_ptr; |
5e6e3a92 BZ |
94 | unsigned long flags; |
95 | ||
8c00228e YAP |
96 | pkt_to_send = (start_win > tbl->start_win) ? |
97 | min((start_win - tbl->start_win), tbl->win_size) : | |
98 | tbl->win_size; | |
5e6e3a92 | 99 | |
8c00228e | 100 | for (i = 0; i < pkt_to_send; ++i) { |
5e6e3a92 BZ |
101 | spin_lock_irqsave(&priv->rx_pkt_lock, flags); |
102 | rx_tmp_ptr = NULL; | |
8c00228e YAP |
103 | if (tbl->rx_reorder_ptr[i]) { |
104 | rx_tmp_ptr = tbl->rx_reorder_ptr[i]; | |
105 | tbl->rx_reorder_ptr[i] = NULL; | |
5e6e3a92 BZ |
106 | } |
107 | spin_unlock_irqrestore(&priv->rx_pkt_lock, flags); | |
5e6e43eb AK |
108 | if (rx_tmp_ptr) |
109 | mwifiex_11n_dispatch_pkt(priv, rx_tmp_ptr); | |
5e6e3a92 BZ |
110 | } |
111 | ||
112 | spin_lock_irqsave(&priv->rx_pkt_lock, flags); | |
113 | /* | |
114 | * We don't have a circular buffer, hence use rotation to simulate | |
115 | * circular buffer | |
116 | */ | |
8c00228e YAP |
117 | for (i = 0; i < tbl->win_size - pkt_to_send; ++i) { |
118 | tbl->rx_reorder_ptr[i] = tbl->rx_reorder_ptr[pkt_to_send + i]; | |
119 | tbl->rx_reorder_ptr[pkt_to_send + i] = NULL; | |
5e6e3a92 BZ |
120 | } |
121 | ||
8c00228e | 122 | tbl->start_win = start_win; |
5e6e3a92 | 123 | spin_unlock_irqrestore(&priv->rx_pkt_lock, flags); |
5e6e3a92 BZ |
124 | } |
125 | ||
126 | /* | |
127 | * This function dispatches all packets in the Rx reorder table until | |
128 | * a hole is found. | |
129 | * | |
130 | * The start window is adjusted automatically when a hole is located. | |
131 | * Since the buffer is linear, the function uses rotation to simulate | |
132 | * circular buffer. | |
133 | */ | |
ab581472 | 134 | static void |
5e6e3a92 | 135 | mwifiex_11n_scan_and_dispatch(struct mwifiex_private *priv, |
8c00228e | 136 | struct mwifiex_rx_reorder_tbl *tbl) |
5e6e3a92 BZ |
137 | { |
138 | int i, j, xchg; | |
270e58e8 | 139 | void *rx_tmp_ptr; |
5e6e3a92 BZ |
140 | unsigned long flags; |
141 | ||
8c00228e | 142 | for (i = 0; i < tbl->win_size; ++i) { |
5e6e3a92 | 143 | spin_lock_irqsave(&priv->rx_pkt_lock, flags); |
8c00228e | 144 | if (!tbl->rx_reorder_ptr[i]) { |
5e6e3a92 BZ |
145 | spin_unlock_irqrestore(&priv->rx_pkt_lock, flags); |
146 | break; | |
147 | } | |
8c00228e YAP |
148 | rx_tmp_ptr = tbl->rx_reorder_ptr[i]; |
149 | tbl->rx_reorder_ptr[i] = NULL; | |
5e6e3a92 | 150 | spin_unlock_irqrestore(&priv->rx_pkt_lock, flags); |
5e6e43eb | 151 | mwifiex_11n_dispatch_pkt(priv, rx_tmp_ptr); |
5e6e3a92 BZ |
152 | } |
153 | ||
154 | spin_lock_irqsave(&priv->rx_pkt_lock, flags); | |
155 | /* | |
156 | * We don't have a circular buffer, hence use rotation to simulate | |
157 | * circular buffer | |
158 | */ | |
159 | if (i > 0) { | |
8c00228e | 160 | xchg = tbl->win_size - i; |
5e6e3a92 | 161 | for (j = 0; j < xchg; ++j) { |
8c00228e YAP |
162 | tbl->rx_reorder_ptr[j] = tbl->rx_reorder_ptr[i + j]; |
163 | tbl->rx_reorder_ptr[i + j] = NULL; | |
5e6e3a92 BZ |
164 | } |
165 | } | |
8c00228e | 166 | tbl->start_win = (tbl->start_win + i) & (MAX_TID_VALUE - 1); |
5e6e3a92 | 167 | spin_unlock_irqrestore(&priv->rx_pkt_lock, flags); |
5e6e3a92 BZ |
168 | } |
169 | ||
170 | /* | |
171 | * This function deletes the Rx reorder table and frees the memory. | |
172 | * | |
173 | * The function stops the associated timer and dispatches all the | |
174 | * pending packets in the Rx reorder table before deletion. | |
175 | */ | |
176 | static void | |
8c00228e YAP |
177 | mwifiex_del_rx_reorder_entry(struct mwifiex_private *priv, |
178 | struct mwifiex_rx_reorder_tbl *tbl) | |
5e6e3a92 BZ |
179 | { |
180 | unsigned long flags; | |
63410c37 | 181 | int start_win; |
5e6e3a92 | 182 | |
8c00228e | 183 | if (!tbl) |
5e6e3a92 BZ |
184 | return; |
185 | ||
6e251174 AP |
186 | spin_lock_irqsave(&priv->adapter->rx_proc_lock, flags); |
187 | priv->adapter->rx_locked = true; | |
188 | if (priv->adapter->rx_processing) { | |
189 | spin_unlock_irqrestore(&priv->adapter->rx_proc_lock, flags); | |
190 | flush_workqueue(priv->adapter->rx_workqueue); | |
191 | } else { | |
192 | spin_unlock_irqrestore(&priv->adapter->rx_proc_lock, flags); | |
193 | } | |
194 | ||
63410c37 | 195 | start_win = (tbl->start_win + tbl->win_size) & (MAX_TID_VALUE - 1); |
5e6e43eb | 196 | mwifiex_11n_dispatch_pkt_until_start_win(priv, tbl, start_win); |
5e6e3a92 | 197 | |
629873f2 | 198 | del_timer_sync(&tbl->timer_context.timer); |
3a8fede1 | 199 | tbl->timer_context.timer_is_set = false; |
5e6e3a92 BZ |
200 | |
201 | spin_lock_irqsave(&priv->rx_reorder_tbl_lock, flags); | |
8c00228e | 202 | list_del(&tbl->list); |
5e6e3a92 BZ |
203 | spin_unlock_irqrestore(&priv->rx_reorder_tbl_lock, flags); |
204 | ||
8c00228e YAP |
205 | kfree(tbl->rx_reorder_ptr); |
206 | kfree(tbl); | |
6e251174 AP |
207 | |
208 | spin_lock_irqsave(&priv->adapter->rx_proc_lock, flags); | |
209 | priv->adapter->rx_locked = false; | |
210 | spin_unlock_irqrestore(&priv->adapter->rx_proc_lock, flags); | |
211 | ||
5e6e3a92 BZ |
212 | } |
213 | ||
214 | /* | |
215 | * This function returns the pointer to an entry in Rx reordering | |
216 | * table which matches the given TA/TID pair. | |
217 | */ | |
d1cf3b95 | 218 | struct mwifiex_rx_reorder_tbl * |
5e6e3a92 BZ |
219 | mwifiex_11n_get_rx_reorder_tbl(struct mwifiex_private *priv, int tid, u8 *ta) |
220 | { | |
8c00228e | 221 | struct mwifiex_rx_reorder_tbl *tbl; |
5e6e3a92 BZ |
222 | unsigned long flags; |
223 | ||
224 | spin_lock_irqsave(&priv->rx_reorder_tbl_lock, flags); | |
8c00228e YAP |
225 | list_for_each_entry(tbl, &priv->rx_reorder_tbl_ptr, list) { |
226 | if (!memcmp(tbl->ta, ta, ETH_ALEN) && tbl->tid == tid) { | |
5e6e3a92 BZ |
227 | spin_unlock_irqrestore(&priv->rx_reorder_tbl_lock, |
228 | flags); | |
8c00228e | 229 | return tbl; |
5e6e3a92 BZ |
230 | } |
231 | } | |
232 | spin_unlock_irqrestore(&priv->rx_reorder_tbl_lock, flags); | |
233 | ||
234 | return NULL; | |
235 | } | |
236 | ||
3e238a11 AP |
237 | /* This function retrieves the pointer to an entry in Rx reordering |
238 | * table which matches the given TA and deletes it. | |
239 | */ | |
240 | void mwifiex_11n_del_rx_reorder_tbl_by_ta(struct mwifiex_private *priv, u8 *ta) | |
241 | { | |
242 | struct mwifiex_rx_reorder_tbl *tbl, *tmp; | |
243 | unsigned long flags; | |
244 | ||
245 | if (!ta) | |
246 | return; | |
247 | ||
248 | spin_lock_irqsave(&priv->rx_reorder_tbl_lock, flags); | |
249 | list_for_each_entry_safe(tbl, tmp, &priv->rx_reorder_tbl_ptr, list) { | |
250 | if (!memcmp(tbl->ta, ta, ETH_ALEN)) { | |
251 | spin_unlock_irqrestore(&priv->rx_reorder_tbl_lock, | |
252 | flags); | |
253 | mwifiex_del_rx_reorder_entry(priv, tbl); | |
254 | spin_lock_irqsave(&priv->rx_reorder_tbl_lock, flags); | |
255 | } | |
256 | } | |
257 | spin_unlock_irqrestore(&priv->rx_reorder_tbl_lock, flags); | |
258 | ||
259 | return; | |
260 | } | |
261 | ||
5e6e3a92 BZ |
262 | /* |
263 | * This function finds the last sequence number used in the packets | |
264 | * buffered in Rx reordering table. | |
265 | */ | |
266 | static int | |
2d702830 | 267 | mwifiex_11n_find_last_seq_num(struct reorder_tmr_cnxt *ctx) |
5e6e3a92 | 268 | { |
2d702830 AK |
269 | struct mwifiex_rx_reorder_tbl *rx_reorder_tbl_ptr = ctx->ptr; |
270 | struct mwifiex_private *priv = ctx->priv; | |
271 | unsigned long flags; | |
5e6e3a92 BZ |
272 | int i; |
273 | ||
2d702830 AK |
274 | spin_lock_irqsave(&priv->rx_reorder_tbl_lock, flags); |
275 | for (i = rx_reorder_tbl_ptr->win_size - 1; i >= 0; --i) { | |
276 | if (rx_reorder_tbl_ptr->rx_reorder_ptr[i]) { | |
277 | spin_unlock_irqrestore(&priv->rx_reorder_tbl_lock, | |
278 | flags); | |
5e6e3a92 | 279 | return i; |
2d702830 AK |
280 | } |
281 | } | |
282 | spin_unlock_irqrestore(&priv->rx_reorder_tbl_lock, flags); | |
5e6e3a92 BZ |
283 | |
284 | return -1; | |
285 | } | |
286 | ||
287 | /* | |
288 | * This function flushes all the packets in Rx reordering table. | |
289 | * | |
290 | * The function checks if any packets are currently buffered in the | |
291 | * table or not. In case there are packets available, it dispatches | |
292 | * them and then dumps the Rx reordering table. | |
293 | */ | |
294 | static void | |
295 | mwifiex_flush_data(unsigned long context) | |
296 | { | |
8c00228e | 297 | struct reorder_tmr_cnxt *ctx = |
5e6e3a92 | 298 | (struct reorder_tmr_cnxt *) context; |
63410c37 | 299 | int start_win, seq_num; |
5e6e3a92 | 300 | |
3a8fede1 | 301 | ctx->timer_is_set = false; |
2d702830 | 302 | seq_num = mwifiex_11n_find_last_seq_num(ctx); |
bb7de2ba | 303 | |
63410c37 | 304 | if (seq_num < 0) |
bb7de2ba YAP |
305 | return; |
306 | ||
acebe8c1 | 307 | mwifiex_dbg(ctx->priv->adapter, INFO, "info: flush data %d\n", seq_num); |
63410c37 | 308 | start_win = (ctx->ptr->start_win + seq_num + 1) & (MAX_TID_VALUE - 1); |
5e6e43eb AK |
309 | mwifiex_11n_dispatch_pkt_until_start_win(ctx->priv, ctx->ptr, |
310 | start_win); | |
5e6e3a92 BZ |
311 | } |
312 | ||
313 | /* | |
314 | * This function creates an entry in Rx reordering table for the | |
315 | * given TA/TID. | |
316 | * | |
317 | * The function also initializes the entry with sequence number, window | |
318 | * size as well as initializes the timer. | |
319 | * | |
320 | * If the received TA/TID pair is already present, all the packets are | |
321 | * dispatched and the window size is moved until the SSN. | |
322 | */ | |
323 | static void | |
324 | mwifiex_11n_create_rx_reorder_tbl(struct mwifiex_private *priv, u8 *ta, | |
84266841 | 325 | int tid, int win_size, int seq_num) |
5e6e3a92 BZ |
326 | { |
327 | int i; | |
8c00228e | 328 | struct mwifiex_rx_reorder_tbl *tbl, *new_node; |
5e6e3a92 BZ |
329 | u16 last_seq = 0; |
330 | unsigned long flags; | |
5a009adf | 331 | struct mwifiex_sta_node *node; |
5e6e3a92 BZ |
332 | |
333 | /* | |
334 | * If we get a TID, ta pair which is already present dispatch all the | |
335 | * the packets and move the window size until the ssn | |
336 | */ | |
8c00228e YAP |
337 | tbl = mwifiex_11n_get_rx_reorder_tbl(priv, tid, ta); |
338 | if (tbl) { | |
5e6e43eb | 339 | mwifiex_11n_dispatch_pkt_until_start_win(priv, tbl, seq_num); |
5e6e3a92 BZ |
340 | return; |
341 | } | |
8c00228e | 342 | /* if !tbl then create one */ |
5e6e3a92 | 343 | new_node = kzalloc(sizeof(struct mwifiex_rx_reorder_tbl), GFP_KERNEL); |
0d2e7a5c | 344 | if (!new_node) |
5e6e3a92 | 345 | return; |
5e6e3a92 BZ |
346 | |
347 | INIT_LIST_HEAD(&new_node->list); | |
348 | new_node->tid = tid; | |
349 | memcpy(new_node->ta, ta, ETH_ALEN); | |
350 | new_node->start_win = seq_num; | |
8acbea61 PS |
351 | new_node->init_win = seq_num; |
352 | new_node->flags = 0; | |
5a009adf | 353 | |
c11fb985 | 354 | spin_lock_irqsave(&priv->sta_list_spinlock, flags); |
5a009adf | 355 | if (mwifiex_queuing_ra_based(priv)) { |
5a009adf AP |
356 | if (priv->bss_role == MWIFIEX_BSS_ROLE_UAP) { |
357 | node = mwifiex_get_sta_entry(priv, ta); | |
358 | if (node) | |
359 | last_seq = node->rx_seq[tid]; | |
360 | } | |
361 | } else { | |
daeb5bb4 AP |
362 | node = mwifiex_get_sta_entry(priv, ta); |
363 | if (node) | |
364 | last_seq = node->rx_seq[tid]; | |
365 | else | |
366 | last_seq = priv->rx_seq[tid]; | |
5a009adf | 367 | } |
c11fb985 | 368 | spin_unlock_irqrestore(&priv->sta_list_spinlock, flags); |
5e6e3a92 | 369 | |
acebe8c1 ZL |
370 | mwifiex_dbg(priv->adapter, INFO, |
371 | "info: last_seq=%d start_win=%d\n", | |
372 | last_seq, new_node->start_win); | |
09bd1976 | 373 | |
92583924 | 374 | if (last_seq != MWIFIEX_DEF_11N_RX_SEQ_NUM && |
8acbea61 | 375 | last_seq >= new_node->start_win) { |
5e6e3a92 | 376 | new_node->start_win = last_seq + 1; |
8acbea61 PS |
377 | new_node->flags |= RXREOR_INIT_WINDOW_SHIFT; |
378 | } | |
5e6e3a92 BZ |
379 | |
380 | new_node->win_size = win_size; | |
381 | ||
382 | new_node->rx_reorder_ptr = kzalloc(sizeof(void *) * win_size, | |
383 | GFP_KERNEL); | |
384 | if (!new_node->rx_reorder_ptr) { | |
385 | kfree((u8 *) new_node); | |
acebe8c1 ZL |
386 | mwifiex_dbg(priv->adapter, ERROR, |
387 | "%s: failed to alloc reorder_ptr\n", __func__); | |
5e6e3a92 BZ |
388 | return; |
389 | } | |
390 | ||
391 | new_node->timer_context.ptr = new_node; | |
392 | new_node->timer_context.priv = priv; | |
3a8fede1 | 393 | new_node->timer_context.timer_is_set = false; |
5e6e3a92 | 394 | |
e4a1c3f8 JL |
395 | setup_timer(&new_node->timer_context.timer, mwifiex_flush_data, |
396 | (unsigned long)&new_node->timer_context); | |
5e6e3a92 BZ |
397 | |
398 | for (i = 0; i < win_size; ++i) | |
399 | new_node->rx_reorder_ptr[i] = NULL; | |
400 | ||
401 | spin_lock_irqsave(&priv->rx_reorder_tbl_lock, flags); | |
402 | list_add_tail(&new_node->list, &priv->rx_reorder_tbl_ptr); | |
403 | spin_unlock_irqrestore(&priv->rx_reorder_tbl_lock, flags); | |
5e6e3a92 BZ |
404 | } |
405 | ||
3a8fede1 MY |
406 | static void |
407 | mwifiex_11n_rxreorder_timer_restart(struct mwifiex_rx_reorder_tbl *tbl) | |
408 | { | |
409 | u32 min_flush_time; | |
410 | ||
411 | if (tbl->win_size >= MWIFIEX_BA_WIN_SIZE_32) | |
412 | min_flush_time = MIN_FLUSH_TIMER_15_MS; | |
413 | else | |
414 | min_flush_time = MIN_FLUSH_TIMER_MS; | |
415 | ||
416 | mod_timer(&tbl->timer_context.timer, | |
417 | jiffies + msecs_to_jiffies(min_flush_time * tbl->win_size)); | |
418 | ||
419 | tbl->timer_context.timer_is_set = true; | |
420 | } | |
421 | ||
5e6e3a92 BZ |
422 | /* |
423 | * This function prepares command for adding a BA request. | |
424 | * | |
425 | * Preparation includes - | |
426 | * - Setting command ID and proper size | |
427 | * - Setting add BA request buffer | |
428 | * - Ensuring correct endian-ness | |
429 | */ | |
572e8f3e | 430 | int mwifiex_cmd_11n_addba_req(struct host_cmd_ds_command *cmd, void *data_buf) |
5e6e3a92 | 431 | { |
2c208890 | 432 | struct host_cmd_ds_11n_addba_req *add_ba_req = &cmd->params.add_ba_req; |
5e6e3a92 BZ |
433 | |
434 | cmd->command = cpu_to_le16(HostCmd_CMD_11N_ADDBA_REQ); | |
435 | cmd->size = cpu_to_le16(sizeof(*add_ba_req) + S_DS_GEN); | |
436 | memcpy(add_ba_req, data_buf, sizeof(*add_ba_req)); | |
437 | ||
438 | return 0; | |
439 | } | |
440 | ||
441 | /* | |
442 | * This function prepares command for adding a BA response. | |
443 | * | |
444 | * Preparation includes - | |
445 | * - Setting command ID and proper size | |
446 | * - Setting add BA response buffer | |
447 | * - Ensuring correct endian-ness | |
448 | */ | |
449 | int mwifiex_cmd_11n_addba_rsp_gen(struct mwifiex_private *priv, | |
450 | struct host_cmd_ds_command *cmd, | |
a5ffddb7 AK |
451 | struct host_cmd_ds_11n_addba_req |
452 | *cmd_addba_req) | |
5e6e3a92 | 453 | { |
2c208890 | 454 | struct host_cmd_ds_11n_addba_rsp *add_ba_rsp = &cmd->params.add_ba_rsp; |
b06c5321 AP |
455 | struct mwifiex_sta_node *sta_ptr; |
456 | u32 rx_win_size = priv->add_ba_param.rx_win_size; | |
270e58e8 YAP |
457 | u8 tid; |
458 | int win_size; | |
c11fb985 | 459 | unsigned long flags; |
5e6e3a92 BZ |
460 | uint16_t block_ack_param_set; |
461 | ||
b06c5321 AP |
462 | if ((GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA) && |
463 | ISSUPP_TDLS_ENABLED(priv->adapter->fw_cap_info) && | |
464 | priv->adapter->is_hw_11ac_capable && | |
465 | memcmp(priv->cfg_bssid, cmd_addba_req->peer_mac_addr, ETH_ALEN)) { | |
c11fb985 | 466 | spin_lock_irqsave(&priv->sta_list_spinlock, flags); |
b06c5321 AP |
467 | sta_ptr = mwifiex_get_sta_entry(priv, |
468 | cmd_addba_req->peer_mac_addr); | |
469 | if (!sta_ptr) { | |
09bd1976 | 470 | spin_unlock_irqrestore(&priv->sta_list_spinlock, flags); |
acebe8c1 ZL |
471 | mwifiex_dbg(priv->adapter, ERROR, |
472 | "BA setup with unknown TDLS peer %pM!\n", | |
473 | cmd_addba_req->peer_mac_addr); | |
b06c5321 AP |
474 | return -1; |
475 | } | |
476 | if (sta_ptr->is_11ac_enabled) | |
477 | rx_win_size = MWIFIEX_11AC_STA_AMPDU_DEF_RXWINSIZE; | |
c11fb985 | 478 | spin_unlock_irqrestore(&priv->sta_list_spinlock, flags); |
b06c5321 AP |
479 | } |
480 | ||
5e6e3a92 BZ |
481 | cmd->command = cpu_to_le16(HostCmd_CMD_11N_ADDBA_RSP); |
482 | cmd->size = cpu_to_le16(sizeof(*add_ba_rsp) + S_DS_GEN); | |
483 | ||
484 | memcpy(add_ba_rsp->peer_mac_addr, cmd_addba_req->peer_mac_addr, | |
485 | ETH_ALEN); | |
486 | add_ba_rsp->dialog_token = cmd_addba_req->dialog_token; | |
487 | add_ba_rsp->block_ack_tmo = cmd_addba_req->block_ack_tmo; | |
488 | add_ba_rsp->ssn = cmd_addba_req->ssn; | |
489 | ||
490 | block_ack_param_set = le16_to_cpu(cmd_addba_req->block_ack_param_set); | |
491 | tid = (block_ack_param_set & IEEE80211_ADDBA_PARAM_TID_MASK) | |
492 | >> BLOCKACKPARAM_TID_POS; | |
493 | add_ba_rsp->status_code = cpu_to_le16(ADDBA_RSP_STATUS_ACCEPT); | |
494 | block_ack_param_set &= ~IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK; | |
4c9f9fb2 AK |
495 | |
496 | /* If we don't support AMSDU inside AMPDU, reset the bit */ | |
497 | if (!priv->add_ba_param.rx_amsdu || | |
498 | (priv->aggr_prio_tbl[tid].amsdu == BA_STREAM_NOT_ALLOWED)) | |
499 | block_ack_param_set &= ~BLOCKACKPARAM_AMSDU_SUPP_MASK; | |
b06c5321 | 500 | block_ack_param_set |= rx_win_size << BLOCKACKPARAM_WINSIZE_POS; |
5e6e3a92 BZ |
501 | add_ba_rsp->block_ack_param_set = cpu_to_le16(block_ack_param_set); |
502 | win_size = (le16_to_cpu(add_ba_rsp->block_ack_param_set) | |
503 | & IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK) | |
504 | >> BLOCKACKPARAM_WINSIZE_POS; | |
505 | cmd_addba_req->block_ack_param_set = cpu_to_le16(block_ack_param_set); | |
506 | ||
507 | mwifiex_11n_create_rx_reorder_tbl(priv, cmd_addba_req->peer_mac_addr, | |
84266841 YAP |
508 | tid, win_size, |
509 | le16_to_cpu(cmd_addba_req->ssn)); | |
5e6e3a92 BZ |
510 | return 0; |
511 | } | |
512 | ||
513 | /* | |
514 | * This function prepares command for deleting a BA request. | |
515 | * | |
516 | * Preparation includes - | |
517 | * - Setting command ID and proper size | |
518 | * - Setting del BA request buffer | |
519 | * - Ensuring correct endian-ness | |
520 | */ | |
572e8f3e | 521 | int mwifiex_cmd_11n_delba(struct host_cmd_ds_command *cmd, void *data_buf) |
5e6e3a92 | 522 | { |
2c208890 | 523 | struct host_cmd_ds_11n_delba *del_ba = &cmd->params.del_ba; |
5e6e3a92 BZ |
524 | |
525 | cmd->command = cpu_to_le16(HostCmd_CMD_11N_DELBA); | |
526 | cmd->size = cpu_to_le16(sizeof(*del_ba) + S_DS_GEN); | |
527 | memcpy(del_ba, data_buf, sizeof(*del_ba)); | |
528 | ||
529 | return 0; | |
530 | } | |
531 | ||
532 | /* | |
533 | * This function identifies if Rx reordering is needed for a received packet. | |
534 | * | |
535 | * In case reordering is required, the function will do the reordering | |
536 | * before sending it to kernel. | |
537 | * | |
538 | * The Rx reorder table is checked first with the received TID/TA pair. If | |
539 | * not found, the received packet is dispatched immediately. But if found, | |
540 | * the packet is reordered and all the packets in the updated Rx reordering | |
541 | * table is dispatched until a hole is found. | |
542 | * | |
543 | * For sequence number less than the starting window, the packet is dropped. | |
544 | */ | |
545 | int mwifiex_11n_rx_reorder_pkt(struct mwifiex_private *priv, | |
546 | u16 seq_num, u16 tid, | |
547 | u8 *ta, u8 pkt_type, void *payload) | |
548 | { | |
8c00228e | 549 | struct mwifiex_rx_reorder_tbl *tbl; |
3a8fede1 | 550 | int prev_start_win, start_win, end_win, win_size; |
270e58e8 | 551 | u16 pkt_index; |
8acbea61 | 552 | bool init_window_shift = false; |
3a8fede1 | 553 | int ret = 0; |
5e6e3a92 | 554 | |
2c208890 | 555 | tbl = mwifiex_11n_get_rx_reorder_tbl(priv, tid, ta); |
8c00228e | 556 | if (!tbl) { |
5e6e43eb AK |
557 | if (pkt_type != PKT_TYPE_BAR) |
558 | mwifiex_11n_dispatch_pkt(priv, payload); | |
3a8fede1 | 559 | return ret; |
5e6e3a92 | 560 | } |
4c9f9fb2 AK |
561 | |
562 | if ((pkt_type == PKT_TYPE_AMSDU) && !tbl->amsdu) { | |
563 | mwifiex_11n_dispatch_pkt(priv, payload); | |
3a8fede1 | 564 | return ret; |
4c9f9fb2 AK |
565 | } |
566 | ||
8c00228e | 567 | start_win = tbl->start_win; |
3a8fede1 | 568 | prev_start_win = start_win; |
8c00228e | 569 | win_size = tbl->win_size; |
5e6e3a92 | 570 | end_win = ((start_win + win_size) - 1) & (MAX_TID_VALUE - 1); |
8acbea61 PS |
571 | if (tbl->flags & RXREOR_INIT_WINDOW_SHIFT) { |
572 | init_window_shift = true; | |
573 | tbl->flags &= ~RXREOR_INIT_WINDOW_SHIFT; | |
574 | } | |
5e6e3a92 | 575 | |
2db96c3d | 576 | if (tbl->flags & RXREOR_FORCE_NO_DROP) { |
acebe8c1 ZL |
577 | mwifiex_dbg(priv->adapter, INFO, |
578 | "RXREOR_FORCE_NO_DROP when HS is activated\n"); | |
2db96c3d | 579 | tbl->flags &= ~RXREOR_FORCE_NO_DROP; |
8acbea61 PS |
580 | } else if (init_window_shift && seq_num < start_win && |
581 | seq_num >= tbl->init_win) { | |
acebe8c1 ZL |
582 | mwifiex_dbg(priv->adapter, INFO, |
583 | "Sender TID sequence number reset %d->%d for SSN %d\n", | |
584 | start_win, seq_num, tbl->init_win); | |
8acbea61 PS |
585 | tbl->start_win = start_win = seq_num; |
586 | end_win = ((start_win + win_size) - 1) & (MAX_TID_VALUE - 1); | |
2db96c3d | 587 | } else { |
8acbea61 PS |
588 | /* |
589 | * If seq_num is less then starting win then ignore and drop | |
590 | * the packet | |
591 | */ | |
2db96c3d AP |
592 | if ((start_win + TWOPOW11) > (MAX_TID_VALUE - 1)) { |
593 | if (seq_num >= ((start_win + TWOPOW11) & | |
594 | (MAX_TID_VALUE - 1)) && | |
3a8fede1 MY |
595 | seq_num < start_win) { |
596 | ret = -1; | |
597 | goto done; | |
598 | } | |
2db96c3d | 599 | } else if ((seq_num < start_win) || |
3a8fede1 MY |
600 | (seq_num >= (start_win + TWOPOW11))) { |
601 | ret = -1; | |
602 | goto done; | |
2db96c3d | 603 | } |
5e6e3a92 BZ |
604 | } |
605 | ||
606 | /* | |
607 | * If this packet is a BAR we adjust seq_num as | |
608 | * WinStart = seq_num | |
609 | */ | |
610 | if (pkt_type == PKT_TYPE_BAR) | |
611 | seq_num = ((seq_num + win_size) - 1) & (MAX_TID_VALUE - 1); | |
612 | ||
84266841 | 613 | if (((end_win < start_win) && |
2db96c3d | 614 | (seq_num < start_win) && (seq_num > end_win)) || |
84266841 YAP |
615 | ((end_win > start_win) && ((seq_num > end_win) || |
616 | (seq_num < start_win)))) { | |
5e6e3a92 | 617 | end_win = seq_num; |
cc751498 | 618 | if (((end_win - win_size) + 1) >= 0) |
5e6e3a92 BZ |
619 | start_win = (end_win - win_size) + 1; |
620 | else | |
cc751498 | 621 | start_win = (MAX_TID_VALUE - (win_size - end_win)) + 1; |
5e6e43eb | 622 | mwifiex_11n_dispatch_pkt_until_start_win(priv, tbl, start_win); |
5e6e3a92 BZ |
623 | } |
624 | ||
625 | if (pkt_type != PKT_TYPE_BAR) { | |
626 | if (seq_num >= start_win) | |
627 | pkt_index = seq_num - start_win; | |
628 | else | |
629 | pkt_index = (seq_num+MAX_TID_VALUE) - start_win; | |
630 | ||
3a8fede1 MY |
631 | if (tbl->rx_reorder_ptr[pkt_index]) { |
632 | ret = -1; | |
633 | goto done; | |
634 | } | |
5e6e3a92 | 635 | |
8c00228e | 636 | tbl->rx_reorder_ptr[pkt_index] = payload; |
5e6e3a92 BZ |
637 | } |
638 | ||
639 | /* | |
640 | * Dispatch all packets sequentially from start_win until a | |
641 | * hole is found and adjust the start_win appropriately | |
642 | */ | |
8c00228e | 643 | mwifiex_11n_scan_and_dispatch(priv, tbl); |
5e6e3a92 | 644 | |
3a8fede1 MY |
645 | done: |
646 | if (!tbl->timer_context.timer_is_set || | |
647 | prev_start_win != tbl->start_win) | |
648 | mwifiex_11n_rxreorder_timer_restart(tbl); | |
649 | return ret; | |
5e6e3a92 BZ |
650 | } |
651 | ||
652 | /* | |
653 | * This function deletes an entry for a given TID/TA pair. | |
654 | * | |
655 | * The TID/TA are taken from del BA event body. | |
656 | */ | |
657 | void | |
3e822635 YAP |
658 | mwifiex_del_ba_tbl(struct mwifiex_private *priv, int tid, u8 *peer_mac, |
659 | u8 type, int initiator) | |
5e6e3a92 | 660 | { |
8c00228e | 661 | struct mwifiex_rx_reorder_tbl *tbl; |
5e6e3a92 | 662 | struct mwifiex_tx_ba_stream_tbl *ptx_tbl; |
39df5e82 | 663 | struct mwifiex_ra_list_tbl *ra_list; |
5e6e3a92 BZ |
664 | u8 cleanup_rx_reorder_tbl; |
665 | unsigned long flags; | |
719a25e3 | 666 | int tid_down; |
5e6e3a92 BZ |
667 | |
668 | if (type == TYPE_DELBA_RECEIVE) | |
669 | cleanup_rx_reorder_tbl = (initiator) ? true : false; | |
670 | else | |
671 | cleanup_rx_reorder_tbl = (initiator) ? false : true; | |
672 | ||
acebe8c1 ZL |
673 | mwifiex_dbg(priv->adapter, EVENT, "event: DELBA: %pM tid=%d initiator=%d\n", |
674 | peer_mac, tid, initiator); | |
5e6e3a92 BZ |
675 | |
676 | if (cleanup_rx_reorder_tbl) { | |
8c00228e | 677 | tbl = mwifiex_11n_get_rx_reorder_tbl(priv, tid, |
5e6e3a92 | 678 | peer_mac); |
8c00228e | 679 | if (!tbl) { |
acebe8c1 ZL |
680 | mwifiex_dbg(priv->adapter, EVENT, |
681 | "event: TID, TA not found in table\n"); | |
5e6e3a92 BZ |
682 | return; |
683 | } | |
8c00228e | 684 | mwifiex_del_rx_reorder_entry(priv, tbl); |
5e6e3a92 | 685 | } else { |
3e822635 | 686 | ptx_tbl = mwifiex_get_ba_tbl(priv, tid, peer_mac); |
5e6e3a92 | 687 | if (!ptx_tbl) { |
acebe8c1 ZL |
688 | mwifiex_dbg(priv->adapter, EVENT, |
689 | "event: TID, RA not found in table\n"); | |
5e6e3a92 BZ |
690 | return; |
691 | } | |
719a25e3 XH |
692 | |
693 | tid_down = mwifiex_wmm_downgrade_tid(priv, tid); | |
694 | ra_list = mwifiex_wmm_get_ralist_node(priv, tid_down, peer_mac); | |
39df5e82 ZL |
695 | if (ra_list) { |
696 | ra_list->amsdu_in_ampdu = false; | |
697 | ra_list->ba_status = BA_SETUP_NONE; | |
698 | } | |
5e6e3a92 BZ |
699 | spin_lock_irqsave(&priv->tx_ba_stream_tbl_lock, flags); |
700 | mwifiex_11n_delete_tx_ba_stream_tbl_entry(priv, ptx_tbl); | |
701 | spin_unlock_irqrestore(&priv->tx_ba_stream_tbl_lock, flags); | |
702 | } | |
703 | } | |
704 | ||
705 | /* | |
706 | * This function handles the command response of an add BA response. | |
707 | * | |
708 | * Handling includes changing the header fields into CPU format and | |
709 | * creating the stream, provided the add BA is accepted. | |
710 | */ | |
711 | int mwifiex_ret_11n_addba_resp(struct mwifiex_private *priv, | |
712 | struct host_cmd_ds_command *resp) | |
713 | { | |
2c208890 | 714 | struct host_cmd_ds_11n_addba_rsp *add_ba_rsp = &resp->params.add_ba_rsp; |
5e6e3a92 | 715 | int tid, win_size; |
8c00228e | 716 | struct mwifiex_rx_reorder_tbl *tbl; |
5e6e3a92 BZ |
717 | uint16_t block_ack_param_set; |
718 | ||
719 | block_ack_param_set = le16_to_cpu(add_ba_rsp->block_ack_param_set); | |
720 | ||
721 | tid = (block_ack_param_set & IEEE80211_ADDBA_PARAM_TID_MASK) | |
722 | >> BLOCKACKPARAM_TID_POS; | |
723 | /* | |
724 | * Check if we had rejected the ADDBA, if yes then do not create | |
725 | * the stream | |
726 | */ | |
63410c37 | 727 | if (le16_to_cpu(add_ba_rsp->status_code) != BA_RESULT_SUCCESS) { |
acebe8c1 ZL |
728 | mwifiex_dbg(priv->adapter, ERROR, "ADDBA RSP: failed %pM tid=%d)\n", |
729 | add_ba_rsp->peer_mac_addr, tid); | |
5e6e3a92 | 730 | |
8c00228e YAP |
731 | tbl = mwifiex_11n_get_rx_reorder_tbl(priv, tid, |
732 | add_ba_rsp->peer_mac_addr); | |
733 | if (tbl) | |
734 | mwifiex_del_rx_reorder_entry(priv, tbl); | |
63410c37 AK |
735 | |
736 | return 0; | |
5e6e3a92 BZ |
737 | } |
738 | ||
63410c37 AK |
739 | win_size = (block_ack_param_set & IEEE80211_ADDBA_PARAM_BUF_SIZE_MASK) |
740 | >> BLOCKACKPARAM_WINSIZE_POS; | |
741 | ||
4c9f9fb2 AK |
742 | tbl = mwifiex_11n_get_rx_reorder_tbl(priv, tid, |
743 | add_ba_rsp->peer_mac_addr); | |
744 | if (tbl) { | |
745 | if ((block_ack_param_set & BLOCKACKPARAM_AMSDU_SUPP_MASK) && | |
746 | priv->add_ba_param.rx_amsdu && | |
747 | (priv->aggr_prio_tbl[tid].amsdu != BA_STREAM_NOT_ALLOWED)) | |
748 | tbl->amsdu = true; | |
749 | else | |
750 | tbl->amsdu = false; | |
751 | } | |
752 | ||
acebe8c1 ZL |
753 | mwifiex_dbg(priv->adapter, CMD, |
754 | "cmd: ADDBA RSP: %pM tid=%d ssn=%d win_size=%d\n", | |
63410c37 AK |
755 | add_ba_rsp->peer_mac_addr, tid, add_ba_rsp->ssn, win_size); |
756 | ||
5e6e3a92 BZ |
757 | return 0; |
758 | } | |
759 | ||
760 | /* | |
761 | * This function handles BA stream timeout event by preparing and sending | |
762 | * a command to the firmware. | |
763 | */ | |
764 | void mwifiex_11n_ba_stream_timeout(struct mwifiex_private *priv, | |
765 | struct host_cmd_ds_11n_batimeout *event) | |
766 | { | |
767 | struct host_cmd_ds_11n_delba delba; | |
768 | ||
769 | memset(&delba, 0, sizeof(struct host_cmd_ds_11n_delba)); | |
770 | memcpy(delba.peer_mac_addr, event->peer_mac_addr, ETH_ALEN); | |
771 | ||
772 | delba.del_ba_param_set |= | |
773 | cpu_to_le16((u16) event->tid << DELBA_TID_POS); | |
774 | delba.del_ba_param_set |= cpu_to_le16( | |
775 | (u16) event->origninator << DELBA_INITIATOR_POS); | |
776 | delba.reason_code = cpu_to_le16(WLAN_REASON_QSTA_TIMEOUT); | |
fa0ecbb9 | 777 | mwifiex_send_cmd(priv, HostCmd_CMD_11N_DELBA, 0, 0, &delba, false); |
5e6e3a92 BZ |
778 | } |
779 | ||
780 | /* | |
781 | * This function cleans up the Rx reorder table by deleting all the entries | |
782 | * and re-initializing. | |
783 | */ | |
784 | void mwifiex_11n_cleanup_reorder_tbl(struct mwifiex_private *priv) | |
785 | { | |
786 | struct mwifiex_rx_reorder_tbl *del_tbl_ptr, *tmp_node; | |
787 | unsigned long flags; | |
788 | ||
789 | spin_lock_irqsave(&priv->rx_reorder_tbl_lock, flags); | |
790 | list_for_each_entry_safe(del_tbl_ptr, tmp_node, | |
791 | &priv->rx_reorder_tbl_ptr, list) { | |
792 | spin_unlock_irqrestore(&priv->rx_reorder_tbl_lock, flags); | |
8c00228e | 793 | mwifiex_del_rx_reorder_entry(priv, del_tbl_ptr); |
5e6e3a92 BZ |
794 | spin_lock_irqsave(&priv->rx_reorder_tbl_lock, flags); |
795 | } | |
2d702830 | 796 | INIT_LIST_HEAD(&priv->rx_reorder_tbl_ptr); |
5e6e3a92 BZ |
797 | spin_unlock_irqrestore(&priv->rx_reorder_tbl_lock, flags); |
798 | ||
92583924 | 799 | mwifiex_reset_11n_rx_seq_num(priv); |
5e6e3a92 | 800 | } |
2db96c3d AP |
801 | |
802 | /* | |
803 | * This function updates all rx_reorder_tbl's flags. | |
804 | */ | |
805 | void mwifiex_update_rxreor_flags(struct mwifiex_adapter *adapter, u8 flags) | |
806 | { | |
807 | struct mwifiex_private *priv; | |
808 | struct mwifiex_rx_reorder_tbl *tbl; | |
809 | unsigned long lock_flags; | |
810 | int i; | |
811 | ||
812 | for (i = 0; i < adapter->priv_num; i++) { | |
813 | priv = adapter->priv[i]; | |
814 | if (!priv) | |
815 | continue; | |
2db96c3d AP |
816 | |
817 | spin_lock_irqsave(&priv->rx_reorder_tbl_lock, lock_flags); | |
2d702830 AK |
818 | if (list_empty(&priv->rx_reorder_tbl_ptr)) { |
819 | spin_unlock_irqrestore(&priv->rx_reorder_tbl_lock, | |
820 | lock_flags); | |
821 | continue; | |
822 | } | |
823 | ||
2db96c3d AP |
824 | list_for_each_entry(tbl, &priv->rx_reorder_tbl_ptr, list) |
825 | tbl->flags = flags; | |
826 | spin_unlock_irqrestore(&priv->rx_reorder_tbl_lock, lock_flags); | |
827 | } | |
828 | ||
829 | return; | |
830 | } | |
d219b7eb CC |
831 | |
832 | /* This function update all the rx_win_size based on coex flag | |
833 | */ | |
834 | static void mwifiex_update_ampdu_rxwinsize(struct mwifiex_adapter *adapter, | |
835 | bool coex_flag) | |
836 | { | |
837 | u8 i; | |
838 | u32 rx_win_size; | |
839 | struct mwifiex_private *priv; | |
840 | ||
841 | dev_dbg(adapter->dev, "Update rxwinsize %d\n", coex_flag); | |
842 | ||
843 | for (i = 0; i < adapter->priv_num; i++) { | |
844 | if (!adapter->priv[i]) | |
845 | continue; | |
846 | priv = adapter->priv[i]; | |
847 | rx_win_size = priv->add_ba_param.rx_win_size; | |
848 | if (coex_flag) { | |
849 | if (priv->bss_type == MWIFIEX_BSS_TYPE_STA) | |
850 | priv->add_ba_param.rx_win_size = | |
851 | MWIFIEX_STA_COEX_AMPDU_DEF_RXWINSIZE; | |
852 | if (priv->bss_type == MWIFIEX_BSS_TYPE_P2P) | |
853 | priv->add_ba_param.rx_win_size = | |
854 | MWIFIEX_STA_COEX_AMPDU_DEF_RXWINSIZE; | |
855 | if (priv->bss_type == MWIFIEX_BSS_TYPE_UAP) | |
856 | priv->add_ba_param.rx_win_size = | |
857 | MWIFIEX_UAP_COEX_AMPDU_DEF_RXWINSIZE; | |
858 | } else { | |
859 | if (priv->bss_type == MWIFIEX_BSS_TYPE_STA) | |
860 | priv->add_ba_param.rx_win_size = | |
861 | MWIFIEX_STA_AMPDU_DEF_RXWINSIZE; | |
862 | if (priv->bss_type == MWIFIEX_BSS_TYPE_P2P) | |
863 | priv->add_ba_param.rx_win_size = | |
864 | MWIFIEX_STA_AMPDU_DEF_RXWINSIZE; | |
865 | if (priv->bss_type == MWIFIEX_BSS_TYPE_UAP) | |
866 | priv->add_ba_param.rx_win_size = | |
867 | MWIFIEX_UAP_AMPDU_DEF_RXWINSIZE; | |
868 | } | |
869 | ||
870 | if (adapter->coex_win_size && adapter->coex_rx_win_size) | |
871 | priv->add_ba_param.rx_win_size = | |
872 | adapter->coex_rx_win_size; | |
873 | ||
874 | if (rx_win_size != priv->add_ba_param.rx_win_size) { | |
875 | if (!priv->media_connected) | |
876 | continue; | |
877 | for (i = 0; i < MAX_NUM_TID; i++) | |
878 | mwifiex_11n_delba(priv, i); | |
879 | } | |
880 | } | |
881 | } | |
882 | ||
883 | /* This function check coex for RX BA | |
884 | */ | |
885 | void mwifiex_coex_ampdu_rxwinsize(struct mwifiex_adapter *adapter) | |
886 | { | |
887 | u8 i; | |
888 | struct mwifiex_private *priv; | |
889 | u8 count = 0; | |
890 | ||
891 | for (i = 0; i < adapter->priv_num; i++) { | |
892 | if (adapter->priv[i]) { | |
893 | priv = adapter->priv[i]; | |
894 | if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA) { | |
895 | if (priv->media_connected) | |
896 | count++; | |
897 | } | |
898 | if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_UAP) { | |
899 | if (priv->bss_started) | |
900 | count++; | |
901 | } | |
902 | } | |
903 | if (count >= MWIFIEX_BSS_COEX_COUNT) | |
904 | break; | |
905 | } | |
906 | if (count >= MWIFIEX_BSS_COEX_COUNT) | |
907 | mwifiex_update_ampdu_rxwinsize(adapter, true); | |
908 | else | |
909 | mwifiex_update_ampdu_rxwinsize(adapter, false); | |
910 | } |