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5e6e3a92 BZ |
1 | /* |
2 | * Marvell Wireless LAN device driver: WMM | |
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 | ||
28 | ||
29 | /* Maximum value FW can accept for driver delay in packet transmission */ | |
30 | #define DRV_PKT_DELAY_TO_FW_MAX 512 | |
31 | ||
32 | ||
33 | #define WMM_QUEUED_PACKET_LOWER_LIMIT 180 | |
34 | ||
35 | #define WMM_QUEUED_PACKET_UPPER_LIMIT 200 | |
36 | ||
37 | /* Offset for TOS field in the IP header */ | |
38 | #define IPTOS_OFFSET 5 | |
39 | ||
4c9f9fb2 AK |
40 | static bool disable_tx_amsdu; |
41 | module_param(disable_tx_amsdu, bool, 0644); | |
c9e2404c | 42 | |
5e6e3a92 BZ |
43 | /* WMM information IE */ |
44 | static const u8 wmm_info_ie[] = { WLAN_EID_VENDOR_SPECIFIC, 0x07, | |
45 | 0x00, 0x50, 0xf2, 0x02, | |
46 | 0x00, 0x01, 0x00 | |
47 | }; | |
48 | ||
49 | static const u8 wmm_aci_to_qidx_map[] = { WMM_AC_BE, | |
50 | WMM_AC_BK, | |
51 | WMM_AC_VI, | |
52 | WMM_AC_VO | |
53 | }; | |
54 | ||
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 */ | |
65 | }; | |
66 | ||
5e6e3a92 BZ |
67 | static u8 ac_to_tid[4][2] = { {1, 2}, {0, 3}, {4, 5}, {6, 7} }; |
68 | ||
69 | /* | |
70 | * This function debug prints the priority parameters for a WMM AC. | |
71 | */ | |
72 | static void | |
73 | mwifiex_wmm_ac_debug_print(const struct ieee_types_wmm_ac_parameters *ac_param) | |
74 | { | |
75 | const char *ac_str[] = { "BK", "BE", "VI", "VO" }; | |
76 | ||
77 | pr_debug("info: WMM AC_%s: ACI=%d, ACM=%d, Aifsn=%d, " | |
c65a30f3 YAP |
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)); | |
5e6e3a92 BZ |
87 | } |
88 | ||
89 | /* | |
90 | * This function allocates a route address list. | |
91 | * | |
92 | * The function also initializes the list with the provided RA. | |
93 | */ | |
94 | static struct mwifiex_ra_list_tbl * | |
3b3a0162 | 95 | mwifiex_wmm_allocate_ralist_node(struct mwifiex_adapter *adapter, const u8 *ra) |
5e6e3a92 BZ |
96 | { |
97 | struct mwifiex_ra_list_tbl *ra_list; | |
98 | ||
99 | ra_list = kzalloc(sizeof(struct mwifiex_ra_list_tbl), GFP_ATOMIC); | |
0d2e7a5c | 100 | if (!ra_list) |
5e6e3a92 | 101 | return NULL; |
0d2e7a5c | 102 | |
5e6e3a92 BZ |
103 | INIT_LIST_HEAD(&ra_list->list); |
104 | skb_queue_head_init(&ra_list->skb_head); | |
105 | ||
106 | memcpy(ra_list->ra, ra, ETH_ALEN); | |
107 | ||
c7d9ed9e | 108 | ra_list->total_pkt_count = 0; |
5e6e3a92 | 109 | |
acebe8c1 | 110 | mwifiex_dbg(adapter, INFO, "info: allocated ra_list %p\n", ra_list); |
5e6e3a92 BZ |
111 | |
112 | return ra_list; | |
113 | } | |
114 | ||
5a009adf AP |
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. | |
117 | */ | |
118 | static u8 mwifiex_get_random_ba_threshold(void) | |
119 | { | |
120 | u32 sec, usec; | |
121 | struct timeval ba_tstamp; | |
122 | u8 ba_threshold; | |
123 | ||
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] | |
127 | */ | |
128 | ||
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; | |
134 | ||
135 | return ba_threshold; | |
136 | } | |
137 | ||
5e6e3a92 BZ |
138 | /* |
139 | * This function allocates and adds a RA list for all TIDs | |
140 | * with the given RA. | |
141 | */ | |
3b3a0162 | 142 | void mwifiex_ralist_add(struct mwifiex_private *priv, const u8 *ra) |
5e6e3a92 BZ |
143 | { |
144 | int i; | |
145 | struct mwifiex_ra_list_tbl *ra_list; | |
146 | struct mwifiex_adapter *adapter = priv->adapter; | |
5a009adf AP |
147 | struct mwifiex_sta_node *node; |
148 | unsigned long flags; | |
149 | ||
5e6e3a92 BZ |
150 | |
151 | for (i = 0; i < MAX_NUM_TID; ++i) { | |
152 | ra_list = mwifiex_wmm_allocate_ralist_node(adapter, ra); | |
acebe8c1 ZL |
153 | mwifiex_dbg(adapter, INFO, |
154 | "info: created ra_list %p\n", ra_list); | |
5e6e3a92 BZ |
155 | |
156 | if (!ra_list) | |
157 | break; | |
158 | ||
5a009adf | 159 | ra_list->is_11n_enabled = 0; |
daeb5bb4 | 160 | ra_list->tdls_link = false; |
39df5e82 ZL |
161 | ra_list->ba_status = BA_SETUP_NONE; |
162 | ra_list->amsdu_in_ampdu = false; | |
4e6ee91b | 163 | ra_list->tx_paused = false; |
5a009adf | 164 | if (!mwifiex_queuing_ra_based(priv)) { |
daeb5bb4 AP |
165 | if (mwifiex_get_tdls_link_status(priv, ra) == |
166 | TDLS_SETUP_COMPLETE) { | |
a983e48b | 167 | ra_list->tdls_link = true; |
daeb5bb4 AP |
168 | ra_list->is_11n_enabled = |
169 | mwifiex_tdls_peer_11n_enabled(priv, ra); | |
170 | } else { | |
171 | ra_list->is_11n_enabled = IS_11N_ENABLED(priv); | |
172 | } | |
5a009adf | 173 | } else { |
c11fb985 AP |
174 | spin_lock_irqsave(&priv->sta_list_spinlock, flags); |
175 | node = mwifiex_get_sta_entry(priv, ra); | |
5a009adf AP |
176 | ra_list->is_11n_enabled = |
177 | mwifiex_is_sta_11n_enabled(priv, node); | |
178 | if (ra_list->is_11n_enabled) | |
179 | ra_list->max_amsdu = node->max_amsdu; | |
c11fb985 | 180 | spin_unlock_irqrestore(&priv->sta_list_spinlock, flags); |
5a009adf | 181 | } |
5e6e3a92 | 182 | |
acebe8c1 ZL |
183 | mwifiex_dbg(adapter, DATA, "data: ralist %p: is_11n_enabled=%d\n", |
184 | ra_list, ra_list->is_11n_enabled); | |
5e6e3a92 | 185 | |
5a009adf | 186 | if (ra_list->is_11n_enabled) { |
f0cb84f8 | 187 | ra_list->ba_pkt_count = 0; |
5a009adf AP |
188 | ra_list->ba_packet_thr = |
189 | mwifiex_get_random_ba_threshold(); | |
190 | } | |
5e6e3a92 | 191 | list_add_tail(&ra_list->list, |
c65a30f3 | 192 | &priv->wmm.tid_tbl_ptr[i].ra_list); |
5e6e3a92 BZ |
193 | } |
194 | } | |
195 | ||
196 | /* | |
197 | * This function sets the WMM queue priorities to their default values. | |
198 | */ | |
199 | static void mwifiex_wmm_default_queue_priorities(struct mwifiex_private *priv) | |
200 | { | |
201 | /* Default queue priorities: VO->VI->BE->BK */ | |
202 | priv->wmm.queue_priority[0] = WMM_AC_VO; | |
203 | priv->wmm.queue_priority[1] = WMM_AC_VI; | |
204 | priv->wmm.queue_priority[2] = WMM_AC_BE; | |
205 | priv->wmm.queue_priority[3] = WMM_AC_BK; | |
206 | } | |
207 | ||
208 | /* | |
209 | * This function map ACs to TIDs. | |
210 | */ | |
211 | static void | |
41a24a29 | 212 | mwifiex_wmm_queue_priorities_tid(struct mwifiex_private *priv) |
5e6e3a92 | 213 | { |
41a24a29 | 214 | struct mwifiex_wmm_desc *wmm = &priv->wmm; |
49729ff6 | 215 | u8 *queue_priority = wmm->queue_priority; |
5e6e3a92 BZ |
216 | int i; |
217 | ||
218 | for (i = 0; i < 4; ++i) { | |
219 | tos_to_tid[7 - (i * 2)] = ac_to_tid[queue_priority[i]][1]; | |
220 | tos_to_tid[6 - (i * 2)] = ac_to_tid[queue_priority[i]][0]; | |
221 | } | |
49729ff6 MY |
222 | |
223 | for (i = 0; i < MAX_NUM_TID; ++i) | |
41a24a29 | 224 | priv->tos_to_tid_inv[tos_to_tid[i]] = (u8)i; |
49729ff6 MY |
225 | |
226 | atomic_set(&wmm->highest_queued_prio, HIGH_PRIO_TID); | |
5e6e3a92 BZ |
227 | } |
228 | ||
229 | /* | |
230 | * This function initializes WMM priority queues. | |
231 | */ | |
232 | void | |
233 | mwifiex_wmm_setup_queue_priorities(struct mwifiex_private *priv, | |
234 | struct ieee_types_wmm_parameter *wmm_ie) | |
235 | { | |
236 | u16 cw_min, avg_back_off, tmp[4]; | |
237 | u32 i, j, num_ac; | |
238 | u8 ac_idx; | |
239 | ||
240 | if (!wmm_ie || !priv->wmm_enabled) { | |
241 | /* WMM is not enabled, just set the defaults and return */ | |
242 | mwifiex_wmm_default_queue_priorities(priv); | |
243 | return; | |
244 | } | |
245 | ||
acebe8c1 ZL |
246 | mwifiex_dbg(priv->adapter, INFO, |
247 | "info: WMM Parameter IE: version=%d,\t" | |
248 | "qos_info Parameter Set Count=%d, Reserved=%#x\n", | |
249 | wmm_ie->vend_hdr.version, wmm_ie->qos_info_bitmap & | |
250 | IEEE80211_WMM_IE_AP_QOSINFO_PARAM_SET_CNT_MASK, | |
251 | wmm_ie->reserved); | |
5e6e3a92 BZ |
252 | |
253 | for (num_ac = 0; num_ac < ARRAY_SIZE(wmm_ie->ac_params); num_ac++) { | |
c65a30f3 YAP |
254 | u8 ecw = wmm_ie->ac_params[num_ac].ecw_bitmap; |
255 | u8 aci_aifsn = wmm_ie->ac_params[num_ac].aci_aifsn_bitmap; | |
256 | cw_min = (1 << (ecw & MWIFIEX_ECW_MIN)) - 1; | |
257 | avg_back_off = (cw_min >> 1) + (aci_aifsn & MWIFIEX_AIFSN); | |
258 | ||
259 | ac_idx = wmm_aci_to_qidx_map[(aci_aifsn & MWIFIEX_ACI) >> 5]; | |
5e6e3a92 BZ |
260 | priv->wmm.queue_priority[ac_idx] = ac_idx; |
261 | tmp[ac_idx] = avg_back_off; | |
262 | ||
acebe8c1 ZL |
263 | mwifiex_dbg(priv->adapter, INFO, |
264 | "info: WMM: CWmax=%d CWmin=%d Avg Back-off=%d\n", | |
265 | (1 << ((ecw & MWIFIEX_ECW_MAX) >> 4)) - 1, | |
266 | cw_min, avg_back_off); | |
5e6e3a92 BZ |
267 | mwifiex_wmm_ac_debug_print(&wmm_ie->ac_params[num_ac]); |
268 | } | |
269 | ||
270 | /* Bubble sort */ | |
271 | for (i = 0; i < num_ac; i++) { | |
272 | for (j = 1; j < num_ac - i; j++) { | |
273 | if (tmp[j - 1] > tmp[j]) { | |
274 | swap(tmp[j - 1], tmp[j]); | |
275 | swap(priv->wmm.queue_priority[j - 1], | |
276 | priv->wmm.queue_priority[j]); | |
277 | } else if (tmp[j - 1] == tmp[j]) { | |
278 | if (priv->wmm.queue_priority[j - 1] | |
279 | < priv->wmm.queue_priority[j]) | |
280 | swap(priv->wmm.queue_priority[j - 1], | |
281 | priv->wmm.queue_priority[j]); | |
282 | } | |
283 | } | |
284 | } | |
285 | ||
41a24a29 | 286 | mwifiex_wmm_queue_priorities_tid(priv); |
5e6e3a92 BZ |
287 | } |
288 | ||
289 | /* | |
290 | * This function evaluates whether or not an AC is to be downgraded. | |
291 | * | |
292 | * In case the AC is not enabled, the highest AC is returned that is | |
293 | * enabled and does not require admission control. | |
294 | */ | |
295 | static enum mwifiex_wmm_ac_e | |
296 | mwifiex_wmm_eval_downgrade_ac(struct mwifiex_private *priv, | |
297 | enum mwifiex_wmm_ac_e eval_ac) | |
298 | { | |
299 | int down_ac; | |
300 | enum mwifiex_wmm_ac_e ret_ac; | |
301 | struct mwifiex_wmm_ac_status *ac_status; | |
302 | ||
303 | ac_status = &priv->wmm.ac_status[eval_ac]; | |
304 | ||
305 | if (!ac_status->disabled) | |
306 | /* Okay to use this AC, its enabled */ | |
307 | return eval_ac; | |
308 | ||
309 | /* Setup a default return value of the lowest priority */ | |
310 | ret_ac = WMM_AC_BK; | |
311 | ||
312 | /* | |
313 | * Find the highest AC that is enabled and does not require | |
314 | * admission control. The spec disallows downgrading to an AC, | |
315 | * which is enabled due to a completed admission control. | |
316 | * Unadmitted traffic is not to be sent on an AC with admitted | |
317 | * traffic. | |
318 | */ | |
319 | for (down_ac = WMM_AC_BK; down_ac < eval_ac; down_ac++) { | |
320 | ac_status = &priv->wmm.ac_status[down_ac]; | |
321 | ||
322 | if (!ac_status->disabled && !ac_status->flow_required) | |
323 | /* AC is enabled and does not require admission | |
324 | control */ | |
325 | ret_ac = (enum mwifiex_wmm_ac_e) down_ac; | |
326 | } | |
327 | ||
328 | return ret_ac; | |
329 | } | |
330 | ||
331 | /* | |
332 | * This function downgrades WMM priority queue. | |
333 | */ | |
334 | void | |
335 | mwifiex_wmm_setup_ac_downgrade(struct mwifiex_private *priv) | |
336 | { | |
337 | int ac_val; | |
338 | ||
acebe8c1 ZL |
339 | mwifiex_dbg(priv->adapter, INFO, "info: WMM: AC Priorities:\t" |
340 | "BK(0), BE(1), VI(2), VO(3)\n"); | |
5e6e3a92 BZ |
341 | |
342 | if (!priv->wmm_enabled) { | |
343 | /* WMM is not enabled, default priorities */ | |
344 | for (ac_val = WMM_AC_BK; ac_val <= WMM_AC_VO; ac_val++) | |
345 | priv->wmm.ac_down_graded_vals[ac_val] = | |
c65a30f3 | 346 | (enum mwifiex_wmm_ac_e) ac_val; |
5e6e3a92 BZ |
347 | } else { |
348 | for (ac_val = WMM_AC_BK; ac_val <= WMM_AC_VO; ac_val++) { | |
349 | priv->wmm.ac_down_graded_vals[ac_val] | |
350 | = mwifiex_wmm_eval_downgrade_ac(priv, | |
351 | (enum mwifiex_wmm_ac_e) ac_val); | |
acebe8c1 ZL |
352 | mwifiex_dbg(priv->adapter, INFO, |
353 | "info: WMM: AC PRIO %d maps to %d\n", | |
354 | ac_val, | |
355 | priv->wmm.ac_down_graded_vals[ac_val]); | |
5e6e3a92 BZ |
356 | } |
357 | } | |
358 | } | |
359 | ||
360 | /* | |
361 | * This function converts the IP TOS field to an WMM AC | |
362 | * Queue assignment. | |
363 | */ | |
364 | static enum mwifiex_wmm_ac_e | |
365 | mwifiex_wmm_convert_tos_to_ac(struct mwifiex_adapter *adapter, u32 tos) | |
366 | { | |
367 | /* Map of TOS UP values to WMM AC */ | |
368 | const enum mwifiex_wmm_ac_e tos_to_ac[] = { WMM_AC_BE, | |
369 | WMM_AC_BK, | |
370 | WMM_AC_BK, | |
371 | WMM_AC_BE, | |
372 | WMM_AC_VI, | |
373 | WMM_AC_VI, | |
374 | WMM_AC_VO, | |
375 | WMM_AC_VO | |
376 | }; | |
377 | ||
378 | if (tos >= ARRAY_SIZE(tos_to_ac)) | |
379 | return WMM_AC_BE; | |
380 | ||
381 | return tos_to_ac[tos]; | |
382 | } | |
383 | ||
384 | /* | |
385 | * This function evaluates a given TID and downgrades it to a lower | |
386 | * TID if the WMM Parameter IE received from the AP indicates that the | |
387 | * AP is disabled (due to call admission control (ACM bit). Mapping | |
388 | * of TID to AC is taken care of internally. | |
389 | */ | |
5f2caaf3 | 390 | u8 mwifiex_wmm_downgrade_tid(struct mwifiex_private *priv, u32 tid) |
5e6e3a92 BZ |
391 | { |
392 | enum mwifiex_wmm_ac_e ac, ac_down; | |
393 | u8 new_tid; | |
394 | ||
395 | ac = mwifiex_wmm_convert_tos_to_ac(priv->adapter, tid); | |
396 | ac_down = priv->wmm.ac_down_graded_vals[ac]; | |
397 | ||
398 | /* Send the index to tid array, picking from the array will be | |
399 | * taken care by dequeuing function | |
400 | */ | |
401 | new_tid = ac_to_tid[ac_down][tid % 2]; | |
402 | ||
403 | return new_tid; | |
404 | } | |
405 | ||
406 | /* | |
407 | * This function initializes the WMM state information and the | |
408 | * WMM data path queues. | |
409 | */ | |
410 | void | |
411 | mwifiex_wmm_init(struct mwifiex_adapter *adapter) | |
412 | { | |
413 | int i, j; | |
414 | struct mwifiex_private *priv; | |
415 | ||
416 | for (j = 0; j < adapter->priv_num; ++j) { | |
417 | priv = adapter->priv[j]; | |
418 | if (!priv) | |
419 | continue; | |
420 | ||
421 | for (i = 0; i < MAX_NUM_TID; ++i) { | |
4c9f9fb2 AK |
422 | if (!disable_tx_amsdu && |
423 | adapter->tx_buf_size > MWIFIEX_TX_DATA_BUF_SIZE_2K) | |
424 | priv->aggr_prio_tbl[i].amsdu = | |
425 | priv->tos_to_tid_inv[i]; | |
426 | else | |
427 | priv->aggr_prio_tbl[i].amsdu = | |
428 | BA_STREAM_NOT_ALLOWED; | |
41a24a29 AP |
429 | priv->aggr_prio_tbl[i].ampdu_ap = |
430 | priv->tos_to_tid_inv[i]; | |
431 | priv->aggr_prio_tbl[i].ampdu_user = | |
432 | priv->tos_to_tid_inv[i]; | |
5e6e3a92 BZ |
433 | } |
434 | ||
31a09a5d AP |
435 | priv->aggr_prio_tbl[6].amsdu |
436 | = priv->aggr_prio_tbl[6].ampdu_ap | |
437 | = priv->aggr_prio_tbl[6].ampdu_user | |
438 | = BA_STREAM_NOT_ALLOWED; | |
439 | ||
440 | priv->aggr_prio_tbl[7].amsdu = priv->aggr_prio_tbl[7].ampdu_ap | |
441 | = priv->aggr_prio_tbl[7].ampdu_user | |
442 | = BA_STREAM_NOT_ALLOWED; | |
443 | ||
04abc0a3 | 444 | mwifiex_set_ba_params(priv); |
92583924 SP |
445 | mwifiex_reset_11n_rx_seq_num(priv); |
446 | ||
f699254c | 447 | atomic_set(&priv->wmm.tx_pkts_queued, 0); |
49729ff6 | 448 | atomic_set(&priv->wmm.highest_queued_prio, HIGH_PRIO_TID); |
5e6e3a92 BZ |
449 | } |
450 | } | |
451 | ||
452 | /* | |
453 | * This function checks if WMM Tx queue is empty. | |
454 | */ | |
455 | int | |
456 | mwifiex_wmm_lists_empty(struct mwifiex_adapter *adapter) | |
457 | { | |
f699254c | 458 | int i; |
5e6e3a92 BZ |
459 | struct mwifiex_private *priv; |
460 | ||
f699254c MY |
461 | for (i = 0; i < adapter->priv_num; ++i) { |
462 | priv = adapter->priv[i]; | |
463 | if (priv && atomic_read(&priv->wmm.tx_pkts_queued)) | |
a8aa69dc | 464 | return false; |
5e6e3a92 BZ |
465 | } |
466 | ||
467 | return true; | |
468 | } | |
469 | ||
470 | /* | |
471 | * This function deletes all packets in an RA list node. | |
472 | * | |
473 | * The packet sent completion callback handler are called with | |
474 | * status failure, after they are dequeued to ensure proper | |
475 | * cleanup. The RA list node itself is freed at the end. | |
476 | */ | |
477 | static void | |
478 | mwifiex_wmm_del_pkts_in_ralist_node(struct mwifiex_private *priv, | |
479 | struct mwifiex_ra_list_tbl *ra_list) | |
480 | { | |
481 | struct mwifiex_adapter *adapter = priv->adapter; | |
482 | struct sk_buff *skb, *tmp; | |
483 | ||
484 | skb_queue_walk_safe(&ra_list->skb_head, skb, tmp) | |
47411a06 | 485 | mwifiex_write_data_complete(adapter, skb, 0, -1); |
5e6e3a92 BZ |
486 | } |
487 | ||
488 | /* | |
489 | * This function deletes all packets in an RA list. | |
490 | * | |
491 | * Each nodes in the RA list are freed individually first, and then | |
492 | * the RA list itself is freed. | |
493 | */ | |
494 | static void | |
495 | mwifiex_wmm_del_pkts_in_ralist(struct mwifiex_private *priv, | |
496 | struct list_head *ra_list_head) | |
497 | { | |
498 | struct mwifiex_ra_list_tbl *ra_list; | |
499 | ||
500 | list_for_each_entry(ra_list, ra_list_head, list) | |
501 | mwifiex_wmm_del_pkts_in_ralist_node(priv, ra_list); | |
502 | } | |
503 | ||
504 | /* | |
505 | * This function deletes all packets in all RA lists. | |
506 | */ | |
507 | static void mwifiex_wmm_cleanup_queues(struct mwifiex_private *priv) | |
508 | { | |
509 | int i; | |
510 | ||
511 | for (i = 0; i < MAX_NUM_TID; i++) | |
512 | mwifiex_wmm_del_pkts_in_ralist(priv, &priv->wmm.tid_tbl_ptr[i]. | |
c65a30f3 | 513 | ra_list); |
f699254c MY |
514 | |
515 | atomic_set(&priv->wmm.tx_pkts_queued, 0); | |
49729ff6 | 516 | atomic_set(&priv->wmm.highest_queued_prio, HIGH_PRIO_TID); |
5e6e3a92 BZ |
517 | } |
518 | ||
519 | /* | |
520 | * This function deletes all route addresses from all RA lists. | |
521 | */ | |
522 | static void mwifiex_wmm_delete_all_ralist(struct mwifiex_private *priv) | |
523 | { | |
524 | struct mwifiex_ra_list_tbl *ra_list, *tmp_node; | |
525 | int i; | |
526 | ||
527 | for (i = 0; i < MAX_NUM_TID; ++i) { | |
acebe8c1 ZL |
528 | mwifiex_dbg(priv->adapter, INFO, |
529 | "info: ra_list: freeing buf for tid %d\n", i); | |
5e6e3a92 | 530 | list_for_each_entry_safe(ra_list, tmp_node, |
c65a30f3 YAP |
531 | &priv->wmm.tid_tbl_ptr[i].ra_list, |
532 | list) { | |
5e6e3a92 BZ |
533 | list_del(&ra_list->list); |
534 | kfree(ra_list); | |
535 | } | |
536 | ||
537 | INIT_LIST_HEAD(&priv->wmm.tid_tbl_ptr[i].ra_list); | |
5e6e3a92 BZ |
538 | } |
539 | } | |
540 | ||
808bbebc AK |
541 | static int mwifiex_free_ack_frame(int id, void *p, void *data) |
542 | { | |
543 | pr_warn("Have pending ack frames!\n"); | |
544 | kfree_skb(p); | |
545 | return 0; | |
546 | } | |
547 | ||
5e6e3a92 BZ |
548 | /* |
549 | * This function cleans up the Tx and Rx queues. | |
550 | * | |
551 | * Cleanup includes - | |
552 | * - All packets in RA lists | |
553 | * - All entries in Rx reorder table | |
554 | * - All entries in Tx BA stream table | |
555 | * - MPA buffer (if required) | |
556 | * - All RA lists | |
557 | */ | |
558 | void | |
559 | mwifiex_clean_txrx(struct mwifiex_private *priv) | |
560 | { | |
561 | unsigned long flags; | |
56bd24a1 | 562 | struct sk_buff *skb, *tmp; |
5e6e3a92 BZ |
563 | |
564 | mwifiex_11n_cleanup_reorder_tbl(priv); | |
565 | spin_lock_irqsave(&priv->wmm.ra_list_spinlock, flags); | |
566 | ||
567 | mwifiex_wmm_cleanup_queues(priv); | |
568 | mwifiex_11n_delete_all_tx_ba_stream_tbl(priv); | |
569 | ||
570 | if (priv->adapter->if_ops.cleanup_mpa_buf) | |
571 | priv->adapter->if_ops.cleanup_mpa_buf(priv->adapter); | |
572 | ||
573 | mwifiex_wmm_delete_all_ralist(priv); | |
574 | memcpy(tos_to_tid, ac_to_tid, sizeof(tos_to_tid)); | |
575 | ||
4f7ba432 AP |
576 | if (priv->adapter->if_ops.clean_pcie_ring && |
577 | !priv->adapter->surprise_removed) | |
fbd7e7ac | 578 | priv->adapter->if_ops.clean_pcie_ring(priv->adapter); |
5e6e3a92 | 579 | spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, flags); |
56bd24a1 AP |
580 | |
581 | skb_queue_walk_safe(&priv->tdls_txq, skb, tmp) | |
582 | mwifiex_write_data_complete(priv->adapter, skb, 0, -1); | |
808bbebc AK |
583 | |
584 | idr_for_each(&priv->ack_status_frames, mwifiex_free_ack_frame, NULL); | |
585 | idr_destroy(&priv->ack_status_frames); | |
5e6e3a92 BZ |
586 | } |
587 | ||
588 | /* | |
589 | * This function retrieves a particular RA list node, matching with the | |
590 | * given TID and RA address. | |
591 | */ | |
39df5e82 | 592 | struct mwifiex_ra_list_tbl * |
5e6e3a92 | 593 | mwifiex_wmm_get_ralist_node(struct mwifiex_private *priv, u8 tid, |
3b3a0162 | 594 | const u8 *ra_addr) |
5e6e3a92 BZ |
595 | { |
596 | struct mwifiex_ra_list_tbl *ra_list; | |
597 | ||
598 | list_for_each_entry(ra_list, &priv->wmm.tid_tbl_ptr[tid].ra_list, | |
599 | list) { | |
600 | if (!memcmp(ra_list->ra, ra_addr, ETH_ALEN)) | |
601 | return ra_list; | |
602 | } | |
603 | ||
604 | return NULL; | |
605 | } | |
606 | ||
4e6ee91b AP |
607 | void mwifiex_update_ralist_tx_pause(struct mwifiex_private *priv, u8 *mac, |
608 | u8 tx_pause) | |
609 | { | |
610 | struct mwifiex_ra_list_tbl *ra_list; | |
611 | u32 pkt_cnt = 0, tx_pkts_queued; | |
612 | unsigned long flags; | |
613 | int i; | |
614 | ||
615 | spin_lock_irqsave(&priv->wmm.ra_list_spinlock, flags); | |
616 | ||
617 | for (i = 0; i < MAX_NUM_TID; ++i) { | |
618 | ra_list = mwifiex_wmm_get_ralist_node(priv, i, mac); | |
619 | if (ra_list && ra_list->tx_paused != tx_pause) { | |
620 | pkt_cnt += ra_list->total_pkt_count; | |
621 | ra_list->tx_paused = tx_pause; | |
622 | if (tx_pause) | |
623 | priv->wmm.pkts_paused[i] += | |
624 | ra_list->total_pkt_count; | |
625 | else | |
626 | priv->wmm.pkts_paused[i] -= | |
627 | ra_list->total_pkt_count; | |
628 | } | |
629 | } | |
630 | ||
631 | if (pkt_cnt) { | |
632 | tx_pkts_queued = atomic_read(&priv->wmm.tx_pkts_queued); | |
633 | if (tx_pause) | |
634 | tx_pkts_queued -= pkt_cnt; | |
635 | else | |
636 | tx_pkts_queued += pkt_cnt; | |
637 | ||
638 | atomic_set(&priv->wmm.tx_pkts_queued, tx_pkts_queued); | |
639 | atomic_set(&priv->wmm.highest_queued_prio, HIGH_PRIO_TID); | |
640 | } | |
641 | spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, flags); | |
642 | } | |
643 | ||
5e6e3a92 BZ |
644 | /* |
645 | * This function retrieves an RA list node for a given TID and | |
646 | * RA address pair. | |
647 | * | |
648 | * If no such node is found, a new node is added first and then | |
649 | * retrieved. | |
650 | */ | |
5f2caaf3 | 651 | struct mwifiex_ra_list_tbl * |
3b3a0162 JB |
652 | mwifiex_wmm_get_queue_raptr(struct mwifiex_private *priv, u8 tid, |
653 | const u8 *ra_addr) | |
5e6e3a92 BZ |
654 | { |
655 | struct mwifiex_ra_list_tbl *ra_list; | |
656 | ||
657 | ra_list = mwifiex_wmm_get_ralist_node(priv, tid, ra_addr); | |
658 | if (ra_list) | |
659 | return ra_list; | |
660 | mwifiex_ralist_add(priv, ra_addr); | |
661 | ||
662 | return mwifiex_wmm_get_ralist_node(priv, tid, ra_addr); | |
663 | } | |
664 | ||
9817fffb AP |
665 | /* |
666 | * This function deletes RA list nodes for given mac for all TIDs. | |
667 | * Function also decrements TX pending count accordingly. | |
668 | */ | |
669 | void | |
670 | mwifiex_wmm_del_peer_ra_list(struct mwifiex_private *priv, const u8 *ra_addr) | |
671 | { | |
672 | struct mwifiex_ra_list_tbl *ra_list; | |
673 | unsigned long flags; | |
674 | int i; | |
675 | ||
676 | spin_lock_irqsave(&priv->wmm.ra_list_spinlock, flags); | |
677 | ||
678 | for (i = 0; i < MAX_NUM_TID; ++i) { | |
679 | ra_list = mwifiex_wmm_get_ralist_node(priv, i, ra_addr); | |
680 | ||
681 | if (!ra_list) | |
682 | continue; | |
683 | mwifiex_wmm_del_pkts_in_ralist_node(priv, ra_list); | |
684 | atomic_sub(ra_list->total_pkt_count, &priv->wmm.tx_pkts_queued); | |
685 | list_del(&ra_list->list); | |
686 | kfree(ra_list); | |
687 | } | |
688 | spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, flags); | |
689 | } | |
690 | ||
5e6e3a92 BZ |
691 | /* |
692 | * This function checks if a particular RA list node exists in a given TID | |
693 | * table index. | |
694 | */ | |
695 | int | |
696 | mwifiex_is_ralist_valid(struct mwifiex_private *priv, | |
697 | struct mwifiex_ra_list_tbl *ra_list, int ptr_index) | |
698 | { | |
699 | struct mwifiex_ra_list_tbl *rlist; | |
700 | ||
701 | list_for_each_entry(rlist, &priv->wmm.tid_tbl_ptr[ptr_index].ra_list, | |
702 | list) { | |
703 | if (rlist == ra_list) | |
704 | return true; | |
705 | } | |
706 | ||
707 | return false; | |
708 | } | |
709 | ||
710 | /* | |
711 | * This function adds a packet to WMM queue. | |
712 | * | |
713 | * In disconnected state the packet is immediately dropped and the | |
714 | * packet send completion callback is called with status failure. | |
715 | * | |
716 | * Otherwise, the correct RA list node is located and the packet | |
717 | * is queued at the list tail. | |
718 | */ | |
719 | void | |
2690e1bb | 720 | mwifiex_wmm_add_buf_txqueue(struct mwifiex_private *priv, |
5e6e3a92 BZ |
721 | struct sk_buff *skb) |
722 | { | |
2690e1bb | 723 | struct mwifiex_adapter *adapter = priv->adapter; |
5e6e3a92 BZ |
724 | u32 tid; |
725 | struct mwifiex_ra_list_tbl *ra_list; | |
726 | u8 ra[ETH_ALEN], tid_down; | |
727 | unsigned long flags; | |
d63bf5e5 AP |
728 | struct list_head list_head; |
729 | int tdls_status = TDLS_NOT_SETUP; | |
730 | struct ethhdr *eth_hdr = (struct ethhdr *)skb->data; | |
731 | struct mwifiex_txinfo *tx_info = MWIFIEX_SKB_TXCB(skb); | |
732 | ||
733 | memcpy(ra, eth_hdr->h_dest, ETH_ALEN); | |
734 | ||
735 | if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA && | |
736 | ISSUPP_TDLS_ENABLED(adapter->fw_cap_info)) { | |
737 | if (ntohs(eth_hdr->h_proto) == ETH_P_TDLS) | |
acebe8c1 ZL |
738 | mwifiex_dbg(adapter, DATA, |
739 | "TDLS setup packet for %pM.\t" | |
740 | "Don't block\n", ra); | |
16e8552a | 741 | else if (memcmp(priv->cfg_bssid, ra, ETH_ALEN)) |
d63bf5e5 AP |
742 | tdls_status = mwifiex_get_tdls_link_status(priv, ra); |
743 | } | |
5e6e3a92 | 744 | |
e39faa73 | 745 | if (!priv->media_connected && !mwifiex_is_skb_mgmt_frame(skb)) { |
acebe8c1 | 746 | mwifiex_dbg(adapter, DATA, "data: drop packet in disconnect\n"); |
47411a06 | 747 | mwifiex_write_data_complete(adapter, skb, 0, -1); |
5e6e3a92 BZ |
748 | return; |
749 | } | |
750 | ||
751 | tid = skb->priority; | |
752 | ||
753 | spin_lock_irqsave(&priv->wmm.ra_list_spinlock, flags); | |
754 | ||
755 | tid_down = mwifiex_wmm_downgrade_tid(priv, tid); | |
756 | ||
757 | /* In case of infra as we have already created the list during | |
758 | association we just don't have to call get_queue_raptr, we will | |
759 | have only 1 raptr for a tid in case of infra */ | |
e39faa73 SP |
760 | if (!mwifiex_queuing_ra_based(priv) && |
761 | !mwifiex_is_skb_mgmt_frame(skb)) { | |
d63bf5e5 AP |
762 | switch (tdls_status) { |
763 | case TDLS_SETUP_COMPLETE: | |
764 | ra_list = mwifiex_wmm_get_queue_raptr(priv, tid_down, | |
765 | ra); | |
766 | tx_info->flags |= MWIFIEX_BUF_FLAG_TDLS_PKT; | |
767 | break; | |
768 | case TDLS_SETUP_INPROGRESS: | |
769 | skb_queue_tail(&priv->tdls_txq, skb); | |
770 | spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, | |
771 | flags); | |
772 | return; | |
773 | default: | |
774 | list_head = priv->wmm.tid_tbl_ptr[tid_down].ra_list; | |
775 | if (!list_empty(&list_head)) | |
776 | ra_list = list_first_entry( | |
777 | &list_head, struct mwifiex_ra_list_tbl, | |
778 | list); | |
779 | else | |
780 | ra_list = NULL; | |
781 | break; | |
782 | } | |
5e6e3a92 BZ |
783 | } else { |
784 | memcpy(ra, skb->data, ETH_ALEN); | |
e39faa73 | 785 | if (ra[0] & 0x01 || mwifiex_is_skb_mgmt_frame(skb)) |
93803b33 | 786 | eth_broadcast_addr(ra); |
5e6e3a92 BZ |
787 | ra_list = mwifiex_wmm_get_queue_raptr(priv, tid_down, ra); |
788 | } | |
789 | ||
790 | if (!ra_list) { | |
791 | spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, flags); | |
47411a06 | 792 | mwifiex_write_data_complete(adapter, skb, 0, -1); |
5e6e3a92 BZ |
793 | return; |
794 | } | |
795 | ||
796 | skb_queue_tail(&ra_list->skb_head, skb); | |
797 | ||
f0cb84f8 | 798 | ra_list->ba_pkt_count++; |
c7d9ed9e | 799 | ra_list->total_pkt_count++; |
5e6e3a92 | 800 | |
49729ff6 | 801 | if (atomic_read(&priv->wmm.highest_queued_prio) < |
41a24a29 | 802 | priv->tos_to_tid_inv[tid_down]) |
49729ff6 | 803 | atomic_set(&priv->wmm.highest_queued_prio, |
41a24a29 | 804 | priv->tos_to_tid_inv[tid_down]); |
49729ff6 | 805 | |
9186a1f3 XH |
806 | if (ra_list->tx_paused) |
807 | priv->wmm.pkts_paused[tid_down]++; | |
808 | else | |
809 | atomic_inc(&priv->wmm.tx_pkts_queued); | |
2716fd7d | 810 | |
5e6e3a92 BZ |
811 | spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, flags); |
812 | } | |
813 | ||
814 | /* | |
815 | * This function processes the get WMM status command response from firmware. | |
816 | * | |
817 | * The response may contain multiple TLVs - | |
818 | * - AC Queue status TLVs | |
819 | * - Current WMM Parameter IE TLV | |
820 | * - Admission Control action frame TLVs | |
821 | * | |
822 | * This function parses the TLVs and then calls further specific functions | |
823 | * to process any changes in the queue prioritize or state. | |
824 | */ | |
825 | int mwifiex_ret_wmm_get_status(struct mwifiex_private *priv, | |
826 | const struct host_cmd_ds_command *resp) | |
827 | { | |
828 | u8 *curr = (u8 *) &resp->params.get_wmm_status; | |
829 | uint16_t resp_len = le16_to_cpu(resp->size), tlv_len; | |
acebe8c1 | 830 | int mask = IEEE80211_WMM_IE_AP_QOSINFO_PARAM_SET_CNT_MASK; |
c856197d | 831 | bool valid = true; |
5e6e3a92 BZ |
832 | |
833 | struct mwifiex_ie_types_data *tlv_hdr; | |
834 | struct mwifiex_ie_types_wmm_queue_status *tlv_wmm_qstatus; | |
835 | struct ieee_types_wmm_parameter *wmm_param_ie = NULL; | |
836 | struct mwifiex_wmm_ac_status *ac_status; | |
837 | ||
acebe8c1 ZL |
838 | mwifiex_dbg(priv->adapter, INFO, |
839 | "info: WMM: WMM_GET_STATUS cmdresp received: %d\n", | |
840 | resp_len); | |
5e6e3a92 BZ |
841 | |
842 | while ((resp_len >= sizeof(tlv_hdr->header)) && valid) { | |
843 | tlv_hdr = (struct mwifiex_ie_types_data *) curr; | |
844 | tlv_len = le16_to_cpu(tlv_hdr->header.len); | |
845 | ||
95edbc30 DC |
846 | if (resp_len < tlv_len + sizeof(tlv_hdr->header)) |
847 | break; | |
848 | ||
5e6e3a92 BZ |
849 | switch (le16_to_cpu(tlv_hdr->header.type)) { |
850 | case TLV_TYPE_WMMQSTATUS: | |
851 | tlv_wmm_qstatus = | |
852 | (struct mwifiex_ie_types_wmm_queue_status *) | |
853 | tlv_hdr; | |
acebe8c1 ZL |
854 | mwifiex_dbg(priv->adapter, CMD, |
855 | "info: CMD_RESP: WMM_GET_STATUS:\t" | |
856 | "QSTATUS TLV: %d, %d, %d\n", | |
857 | tlv_wmm_qstatus->queue_index, | |
858 | tlv_wmm_qstatus->flow_required, | |
859 | tlv_wmm_qstatus->disabled); | |
5e6e3a92 BZ |
860 | |
861 | ac_status = &priv->wmm.ac_status[tlv_wmm_qstatus-> | |
862 | queue_index]; | |
863 | ac_status->disabled = tlv_wmm_qstatus->disabled; | |
864 | ac_status->flow_required = | |
c65a30f3 | 865 | tlv_wmm_qstatus->flow_required; |
5e6e3a92 BZ |
866 | ac_status->flow_created = tlv_wmm_qstatus->flow_created; |
867 | break; | |
868 | ||
869 | case WLAN_EID_VENDOR_SPECIFIC: | |
870 | /* | |
871 | * Point the regular IEEE IE 2 bytes into the Marvell IE | |
872 | * and setup the IEEE IE type and length byte fields | |
873 | */ | |
874 | ||
875 | wmm_param_ie = | |
876 | (struct ieee_types_wmm_parameter *) (curr + | |
877 | 2); | |
878 | wmm_param_ie->vend_hdr.len = (u8) tlv_len; | |
879 | wmm_param_ie->vend_hdr.element_id = | |
880 | WLAN_EID_VENDOR_SPECIFIC; | |
881 | ||
acebe8c1 ZL |
882 | mwifiex_dbg(priv->adapter, CMD, |
883 | "info: CMD_RESP: WMM_GET_STATUS:\t" | |
884 | "WMM Parameter Set Count: %d\n", | |
885 | wmm_param_ie->qos_info_bitmap & mask); | |
5e6e3a92 BZ |
886 | |
887 | memcpy((u8 *) &priv->curr_bss_params.bss_descriptor. | |
888 | wmm_ie, wmm_param_ie, | |
889 | wmm_param_ie->vend_hdr.len + 2); | |
890 | ||
891 | break; | |
892 | ||
893 | default: | |
894 | valid = false; | |
895 | break; | |
896 | } | |
897 | ||
898 | curr += (tlv_len + sizeof(tlv_hdr->header)); | |
899 | resp_len -= (tlv_len + sizeof(tlv_hdr->header)); | |
900 | } | |
901 | ||
902 | mwifiex_wmm_setup_queue_priorities(priv, wmm_param_ie); | |
903 | mwifiex_wmm_setup_ac_downgrade(priv); | |
904 | ||
905 | return 0; | |
906 | } | |
907 | ||
908 | /* | |
909 | * Callback handler from the command module to allow insertion of a WMM TLV. | |
910 | * | |
911 | * If the BSS we are associating to supports WMM, this function adds the | |
912 | * required WMM Information IE to the association request command buffer in | |
913 | * the form of a Marvell extended IEEE IE. | |
914 | */ | |
915 | u32 | |
916 | mwifiex_wmm_process_association_req(struct mwifiex_private *priv, | |
917 | u8 **assoc_buf, | |
918 | struct ieee_types_wmm_parameter *wmm_ie, | |
919 | struct ieee80211_ht_cap *ht_cap) | |
920 | { | |
921 | struct mwifiex_ie_types_wmm_param_set *wmm_tlv; | |
922 | u32 ret_len = 0; | |
923 | ||
924 | /* Null checks */ | |
925 | if (!assoc_buf) | |
926 | return 0; | |
927 | if (!(*assoc_buf)) | |
928 | return 0; | |
929 | ||
930 | if (!wmm_ie) | |
931 | return 0; | |
932 | ||
acebe8c1 ZL |
933 | mwifiex_dbg(priv->adapter, INFO, |
934 | "info: WMM: process assoc req: bss->wmm_ie=%#x\n", | |
935 | wmm_ie->vend_hdr.element_id); | |
5e6e3a92 | 936 | |
c65a30f3 YAP |
937 | if ((priv->wmm_required || |
938 | (ht_cap && (priv->adapter->config_bands & BAND_GN || | |
939 | priv->adapter->config_bands & BAND_AN))) && | |
940 | wmm_ie->vend_hdr.element_id == WLAN_EID_VENDOR_SPECIFIC) { | |
5e6e3a92 BZ |
941 | wmm_tlv = (struct mwifiex_ie_types_wmm_param_set *) *assoc_buf; |
942 | wmm_tlv->header.type = cpu_to_le16((u16) wmm_info_ie[0]); | |
943 | wmm_tlv->header.len = cpu_to_le16((u16) wmm_info_ie[1]); | |
944 | memcpy(wmm_tlv->wmm_ie, &wmm_info_ie[2], | |
c65a30f3 | 945 | le16_to_cpu(wmm_tlv->header.len)); |
5e6e3a92 BZ |
946 | if (wmm_ie->qos_info_bitmap & IEEE80211_WMM_IE_AP_QOSINFO_UAPSD) |
947 | memcpy((u8 *) (wmm_tlv->wmm_ie | |
c65a30f3 YAP |
948 | + le16_to_cpu(wmm_tlv->header.len) |
949 | - sizeof(priv->wmm_qosinfo)), | |
950 | &priv->wmm_qosinfo, sizeof(priv->wmm_qosinfo)); | |
5e6e3a92 BZ |
951 | |
952 | ret_len = sizeof(wmm_tlv->header) | |
c65a30f3 | 953 | + le16_to_cpu(wmm_tlv->header.len); |
5e6e3a92 BZ |
954 | |
955 | *assoc_buf += ret_len; | |
956 | } | |
957 | ||
958 | return ret_len; | |
959 | } | |
960 | ||
961 | /* | |
962 | * This function computes the time delay in the driver queues for a | |
963 | * given packet. | |
964 | * | |
965 | * When the packet is received at the OS/Driver interface, the current | |
966 | * time is set in the packet structure. The difference between the present | |
967 | * time and that received time is computed in this function and limited | |
968 | * based on pre-compiled limits in the driver. | |
969 | */ | |
970 | u8 | |
971 | mwifiex_wmm_compute_drv_pkt_delay(struct mwifiex_private *priv, | |
c65a30f3 | 972 | const struct sk_buff *skb) |
5e6e3a92 | 973 | { |
c64800e7 | 974 | u32 queue_delay = ktime_to_ms(net_timedelta(skb->tstamp)); |
270e58e8 | 975 | u8 ret_val; |
5e6e3a92 BZ |
976 | |
977 | /* | |
978 | * Queue delay is passed as a uint8 in units of 2ms (ms shifted | |
979 | * by 1). Min value (other than 0) is therefore 2ms, max is 510ms. | |
980 | * | |
981 | * Pass max value if queue_delay is beyond the uint8 range | |
982 | */ | |
983 | ret_val = (u8) (min(queue_delay, priv->wmm.drv_pkt_delay_max) >> 1); | |
984 | ||
acebe8c1 ZL |
985 | mwifiex_dbg(priv->adapter, DATA, "data: WMM: Pkt Delay: %d ms,\t" |
986 | "%d ms sent to FW\n", queue_delay, ret_val); | |
5e6e3a92 BZ |
987 | |
988 | return ret_val; | |
989 | } | |
990 | ||
991 | /* | |
992 | * This function retrieves the highest priority RA list table pointer. | |
993 | */ | |
994 | static struct mwifiex_ra_list_tbl * | |
995 | mwifiex_wmm_get_highest_priolist_ptr(struct mwifiex_adapter *adapter, | |
996 | struct mwifiex_private **priv, int *tid) | |
997 | { | |
998 | struct mwifiex_private *priv_tmp; | |
2e237319 | 999 | struct mwifiex_ra_list_tbl *ptr; |
5e6e3a92 | 1000 | struct mwifiex_tid_tbl *tid_ptr; |
bb7de2ba | 1001 | atomic_t *hqp; |
690e792c | 1002 | unsigned long flags_ra; |
5e6e3a92 BZ |
1003 | int i, j; |
1004 | ||
b006ed54 | 1005 | /* check the BSS with highest priority first */ |
5e6e3a92 | 1006 | for (j = adapter->priv_num - 1; j >= 0; --j) { |
b006ed54 AF |
1007 | /* iterate over BSS with the equal priority */ |
1008 | list_for_each_entry(adapter->bss_prio_tbl[j].bss_prio_cur, | |
1009 | &adapter->bss_prio_tbl[j].bss_prio_head, | |
1010 | list) { | |
16051b0e | 1011 | |
b006ed54 | 1012 | priv_tmp = adapter->bss_prio_tbl[j].bss_prio_cur->priv; |
5e6e3a92 | 1013 | |
333f6b22 | 1014 | if (atomic_read(&priv_tmp->wmm.tx_pkts_queued) == 0) |
b006ed54 | 1015 | continue; |
333f6b22 AF |
1016 | |
1017 | /* iterate over the WMM queues of the BSS */ | |
1018 | hqp = &priv_tmp->wmm.highest_queued_prio; | |
49729ff6 | 1019 | for (i = atomic_read(hqp); i >= LOW_PRIO_TID; --i) { |
5e6e3a92 | 1020 | |
2716fd7d AF |
1021 | spin_lock_irqsave(&priv_tmp->wmm. |
1022 | ra_list_spinlock, flags_ra); | |
1023 | ||
5e6e3a92 BZ |
1024 | tid_ptr = &(priv_tmp)->wmm. |
1025 | tid_tbl_ptr[tos_to_tid[i]]; | |
1026 | ||
2e237319 AF |
1027 | /* iterate over receiver addresses */ |
1028 | list_for_each_entry(ptr, &tid_ptr->ra_list, | |
1029 | list) { | |
5e6e3a92 | 1030 | |
b5b0f272 XH |
1031 | if (!ptr->tx_paused && |
1032 | !skb_queue_empty(&ptr->skb_head)) | |
2716fd7d | 1033 | /* holds both locks */ |
bb7de2ba | 1034 | goto found; |
2e237319 | 1035 | } |
bb7de2ba | 1036 | |
2716fd7d AF |
1037 | spin_unlock_irqrestore(&priv_tmp->wmm. |
1038 | ra_list_spinlock, | |
1039 | flags_ra); | |
5e6e3a92 | 1040 | } |
b006ed54 | 1041 | } |
5e6e3a92 | 1042 | |
5e6e3a92 | 1043 | } |
2716fd7d | 1044 | |
5e6e3a92 | 1045 | return NULL; |
bb7de2ba YAP |
1046 | |
1047 | found: | |
690e792c | 1048 | /* holds ra_list_spinlock */ |
bb7de2ba YAP |
1049 | if (atomic_read(hqp) > i) |
1050 | atomic_set(hqp, i); | |
2716fd7d | 1051 | spin_unlock_irqrestore(&priv_tmp->wmm.ra_list_spinlock, flags_ra); |
bb7de2ba YAP |
1052 | |
1053 | *priv = priv_tmp; | |
1054 | *tid = tos_to_tid[i]; | |
1055 | ||
1056 | return ptr; | |
5e6e3a92 BZ |
1057 | } |
1058 | ||
b006ed54 | 1059 | /* This functions rotates ra and bss lists so packets are picked round robin. |
2e237319 AF |
1060 | * |
1061 | * After a packet is successfully transmitted, rotate the ra list, so the ra | |
1062 | * next to the one transmitted, will come first in the list. This way we pick | |
b006ed54 AF |
1063 | * the ra' in a round robin fashion. Same applies to bss nodes of equal |
1064 | * priority. | |
2e237319 AF |
1065 | * |
1066 | * Function also increments wmm.packets_out counter. | |
1067 | */ | |
1068 | void mwifiex_rotate_priolists(struct mwifiex_private *priv, | |
1069 | struct mwifiex_ra_list_tbl *ra, | |
1070 | int tid) | |
1071 | { | |
b006ed54 AF |
1072 | struct mwifiex_adapter *adapter = priv->adapter; |
1073 | struct mwifiex_bss_prio_tbl *tbl = adapter->bss_prio_tbl; | |
2e237319 AF |
1074 | struct mwifiex_tid_tbl *tid_ptr = &priv->wmm.tid_tbl_ptr[tid]; |
1075 | unsigned long flags; | |
1076 | ||
b006ed54 AF |
1077 | spin_lock_irqsave(&tbl[priv->bss_priority].bss_prio_lock, flags); |
1078 | /* | |
1079 | * dirty trick: we remove 'head' temporarily and reinsert it after | |
1080 | * curr bss node. imagine list to stay fixed while head is moved | |
1081 | */ | |
1082 | list_move(&tbl[priv->bss_priority].bss_prio_head, | |
1083 | &tbl[priv->bss_priority].bss_prio_cur->list); | |
1084 | spin_unlock_irqrestore(&tbl[priv->bss_priority].bss_prio_lock, flags); | |
1085 | ||
2e237319 AF |
1086 | spin_lock_irqsave(&priv->wmm.ra_list_spinlock, flags); |
1087 | if (mwifiex_is_ralist_valid(priv, ra, tid)) { | |
1088 | priv->wmm.packets_out[tid]++; | |
b006ed54 | 1089 | /* same as above */ |
2e237319 AF |
1090 | list_move(&tid_ptr->ra_list, &ra->list); |
1091 | } | |
1092 | spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, flags); | |
1093 | } | |
1094 | ||
d85c5fe4 AK |
1095 | /* |
1096 | * This function checks if 11n aggregation is possible. | |
1097 | */ | |
1098 | static int | |
1099 | mwifiex_is_11n_aggragation_possible(struct mwifiex_private *priv, | |
1100 | struct mwifiex_ra_list_tbl *ptr, | |
1101 | int max_buf_size) | |
1102 | { | |
1103 | int count = 0, total_size = 0; | |
1104 | struct sk_buff *skb, *tmp; | |
5a009adf AP |
1105 | int max_amsdu_size; |
1106 | ||
1107 | if (priv->bss_role == MWIFIEX_BSS_ROLE_UAP && priv->ap_11n_enabled && | |
1108 | ptr->is_11n_enabled) | |
1109 | max_amsdu_size = min_t(int, ptr->max_amsdu, max_buf_size); | |
1110 | else | |
1111 | max_amsdu_size = max_buf_size; | |
d85c5fe4 AK |
1112 | |
1113 | skb_queue_walk_safe(&ptr->skb_head, skb, tmp) { | |
1114 | total_size += skb->len; | |
5a009adf | 1115 | if (total_size >= max_amsdu_size) |
d85c5fe4 AK |
1116 | break; |
1117 | if (++count >= MIN_NUM_AMSDU) | |
1118 | return true; | |
1119 | } | |
1120 | ||
1121 | return false; | |
1122 | } | |
1123 | ||
5e6e3a92 BZ |
1124 | /* |
1125 | * This function sends a single packet to firmware for transmission. | |
1126 | */ | |
1127 | static void | |
1128 | mwifiex_send_single_packet(struct mwifiex_private *priv, | |
1129 | struct mwifiex_ra_list_tbl *ptr, int ptr_index, | |
1130 | unsigned long ra_list_flags) | |
1131 | __releases(&priv->wmm.ra_list_spinlock) | |
1132 | { | |
1133 | struct sk_buff *skb, *skb_next; | |
1134 | struct mwifiex_tx_param tx_param; | |
1135 | struct mwifiex_adapter *adapter = priv->adapter; | |
5e6e3a92 BZ |
1136 | struct mwifiex_txinfo *tx_info; |
1137 | ||
1138 | if (skb_queue_empty(&ptr->skb_head)) { | |
1139 | spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, | |
1140 | ra_list_flags); | |
acebe8c1 | 1141 | mwifiex_dbg(adapter, DATA, "data: nothing to send\n"); |
5e6e3a92 BZ |
1142 | return; |
1143 | } | |
1144 | ||
1145 | skb = skb_dequeue(&ptr->skb_head); | |
1146 | ||
1147 | tx_info = MWIFIEX_SKB_TXCB(skb); | |
acebe8c1 ZL |
1148 | mwifiex_dbg(adapter, DATA, |
1149 | "data: dequeuing the packet %p %p\n", ptr, skb); | |
5e6e3a92 | 1150 | |
c7d9ed9e | 1151 | ptr->total_pkt_count--; |
5e6e3a92 BZ |
1152 | |
1153 | if (!skb_queue_empty(&ptr->skb_head)) | |
1154 | skb_next = skb_peek(&ptr->skb_head); | |
1155 | else | |
1156 | skb_next = NULL; | |
1157 | ||
1158 | spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, ra_list_flags); | |
1159 | ||
1160 | tx_param.next_pkt_len = ((skb_next) ? skb_next->len + | |
1161 | sizeof(struct txpd) : 0); | |
1162 | ||
636c4598 | 1163 | if (mwifiex_process_tx(priv, skb, &tx_param) == -EBUSY) { |
5e6e3a92 BZ |
1164 | /* Queue the packet back at the head */ |
1165 | spin_lock_irqsave(&priv->wmm.ra_list_spinlock, ra_list_flags); | |
1166 | ||
1167 | if (!mwifiex_is_ralist_valid(priv, ptr, ptr_index)) { | |
1168 | spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, | |
1169 | ra_list_flags); | |
47411a06 | 1170 | mwifiex_write_data_complete(adapter, skb, 0, -1); |
5e6e3a92 BZ |
1171 | return; |
1172 | } | |
1173 | ||
1174 | skb_queue_tail(&ptr->skb_head, skb); | |
1175 | ||
c7d9ed9e | 1176 | ptr->total_pkt_count++; |
f0cb84f8 | 1177 | ptr->ba_pkt_count++; |
5e6e3a92 BZ |
1178 | tx_info->flags |= MWIFIEX_BUF_FLAG_REQUEUED_PKT; |
1179 | spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, | |
1180 | ra_list_flags); | |
1181 | } else { | |
2e237319 | 1182 | mwifiex_rotate_priolists(priv, ptr, ptr_index); |
f699254c | 1183 | atomic_dec(&priv->wmm.tx_pkts_queued); |
5e6e3a92 BZ |
1184 | } |
1185 | } | |
1186 | ||
1187 | /* | |
1188 | * This function checks if the first packet in the given RA list | |
1189 | * is already processed or not. | |
1190 | */ | |
1191 | static int | |
1192 | mwifiex_is_ptr_processed(struct mwifiex_private *priv, | |
1193 | struct mwifiex_ra_list_tbl *ptr) | |
1194 | { | |
1195 | struct sk_buff *skb; | |
1196 | struct mwifiex_txinfo *tx_info; | |
1197 | ||
1198 | if (skb_queue_empty(&ptr->skb_head)) | |
1199 | return false; | |
1200 | ||
1201 | skb = skb_peek(&ptr->skb_head); | |
1202 | ||
1203 | tx_info = MWIFIEX_SKB_TXCB(skb); | |
1204 | if (tx_info->flags & MWIFIEX_BUF_FLAG_REQUEUED_PKT) | |
1205 | return true; | |
1206 | ||
1207 | return false; | |
1208 | } | |
1209 | ||
1210 | /* | |
1211 | * This function sends a single processed packet to firmware for | |
1212 | * transmission. | |
1213 | */ | |
1214 | static void | |
1215 | mwifiex_send_processed_packet(struct mwifiex_private *priv, | |
1216 | struct mwifiex_ra_list_tbl *ptr, int ptr_index, | |
1217 | unsigned long ra_list_flags) | |
1218 | __releases(&priv->wmm.ra_list_spinlock) | |
1219 | { | |
1220 | struct mwifiex_tx_param tx_param; | |
1221 | struct mwifiex_adapter *adapter = priv->adapter; | |
1222 | int ret = -1; | |
1223 | struct sk_buff *skb, *skb_next; | |
1224 | struct mwifiex_txinfo *tx_info; | |
1225 | ||
1226 | if (skb_queue_empty(&ptr->skb_head)) { | |
1227 | spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, | |
1228 | ra_list_flags); | |
1229 | return; | |
1230 | } | |
1231 | ||
1232 | skb = skb_dequeue(&ptr->skb_head); | |
1233 | ||
e35000ea ZL |
1234 | if (adapter->data_sent || adapter->tx_lock_flag) { |
1235 | spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, | |
1236 | ra_list_flags); | |
1237 | skb_queue_tail(&adapter->tx_data_q, skb); | |
1238 | atomic_inc(&adapter->tx_queued); | |
1239 | return; | |
1240 | } | |
1241 | ||
5e6e3a92 BZ |
1242 | if (!skb_queue_empty(&ptr->skb_head)) |
1243 | skb_next = skb_peek(&ptr->skb_head); | |
1244 | else | |
1245 | skb_next = NULL; | |
1246 | ||
1247 | tx_info = MWIFIEX_SKB_TXCB(skb); | |
1248 | ||
1249 | spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, ra_list_flags); | |
4daffe35 AK |
1250 | |
1251 | if (adapter->iface_type == MWIFIEX_USB) { | |
1252 | adapter->data_sent = true; | |
1253 | ret = adapter->if_ops.host_to_card(adapter, MWIFIEX_USB_EP_DATA, | |
1254 | skb, NULL); | |
1255 | } else { | |
1256 | tx_param.next_pkt_len = | |
1257 | ((skb_next) ? skb_next->len + | |
1258 | sizeof(struct txpd) : 0); | |
1259 | ret = adapter->if_ops.host_to_card(adapter, MWIFIEX_TYPE_DATA, | |
1260 | skb, &tx_param); | |
1261 | } | |
1262 | ||
5e6e3a92 BZ |
1263 | switch (ret) { |
1264 | case -EBUSY: | |
acebe8c1 | 1265 | mwifiex_dbg(adapter, ERROR, "data: -EBUSY is returned\n"); |
5e6e3a92 BZ |
1266 | spin_lock_irqsave(&priv->wmm.ra_list_spinlock, ra_list_flags); |
1267 | ||
1268 | if (!mwifiex_is_ralist_valid(priv, ptr, ptr_index)) { | |
1269 | spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, | |
1270 | ra_list_flags); | |
47411a06 | 1271 | mwifiex_write_data_complete(adapter, skb, 0, -1); |
5e6e3a92 BZ |
1272 | return; |
1273 | } | |
1274 | ||
1275 | skb_queue_tail(&ptr->skb_head, skb); | |
1276 | ||
1277 | tx_info->flags |= MWIFIEX_BUF_FLAG_REQUEUED_PKT; | |
1278 | spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, | |
1279 | ra_list_flags); | |
1280 | break; | |
1281 | case -1: | |
e7f767a7 AP |
1282 | if (adapter->iface_type != MWIFIEX_PCIE) |
1283 | adapter->data_sent = false; | |
acebe8c1 | 1284 | mwifiex_dbg(adapter, ERROR, "host_to_card failed: %#x\n", ret); |
5e6e3a92 | 1285 | adapter->dbg.num_tx_host_to_card_failure++; |
47411a06 | 1286 | mwifiex_write_data_complete(adapter, skb, 0, ret); |
5e6e3a92 BZ |
1287 | break; |
1288 | case -EINPROGRESS: | |
e7f767a7 AP |
1289 | if (adapter->iface_type != MWIFIEX_PCIE) |
1290 | adapter->data_sent = false; | |
7a1f4e61 AK |
1291 | break; |
1292 | case 0: | |
1293 | mwifiex_write_data_complete(adapter, skb, 0, ret); | |
5e6e3a92 BZ |
1294 | default: |
1295 | break; | |
1296 | } | |
1297 | if (ret != -EBUSY) { | |
2e237319 | 1298 | mwifiex_rotate_priolists(priv, ptr, ptr_index); |
f699254c | 1299 | atomic_dec(&priv->wmm.tx_pkts_queued); |
5e6e3a92 BZ |
1300 | } |
1301 | } | |
1302 | ||
1303 | /* | |
1304 | * This function dequeues a packet from the highest priority list | |
1305 | * and transmits it. | |
1306 | */ | |
1307 | static int | |
1308 | mwifiex_dequeue_tx_packet(struct mwifiex_adapter *adapter) | |
1309 | { | |
1310 | struct mwifiex_ra_list_tbl *ptr; | |
1311 | struct mwifiex_private *priv = NULL; | |
1312 | int ptr_index = 0; | |
1313 | u8 ra[ETH_ALEN]; | |
1314 | int tid_del = 0, tid = 0; | |
1315 | unsigned long flags; | |
1316 | ||
1317 | ptr = mwifiex_wmm_get_highest_priolist_ptr(adapter, &priv, &ptr_index); | |
1318 | if (!ptr) | |
1319 | return -1; | |
1320 | ||
572e8f3e | 1321 | tid = mwifiex_get_tid(ptr); |
5e6e3a92 | 1322 | |
acebe8c1 | 1323 | mwifiex_dbg(adapter, DATA, "data: tid=%d\n", tid); |
5e6e3a92 BZ |
1324 | |
1325 | spin_lock_irqsave(&priv->wmm.ra_list_spinlock, flags); | |
1326 | if (!mwifiex_is_ralist_valid(priv, ptr, ptr_index)) { | |
1327 | spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, flags); | |
1328 | return -1; | |
1329 | } | |
1330 | ||
1331 | if (mwifiex_is_ptr_processed(priv, ptr)) { | |
1332 | mwifiex_send_processed_packet(priv, ptr, ptr_index, flags); | |
1333 | /* ra_list_spinlock has been freed in | |
1334 | mwifiex_send_processed_packet() */ | |
1335 | return 0; | |
1336 | } | |
1337 | ||
c65a30f3 | 1338 | if (!ptr->is_11n_enabled || |
39df5e82 ZL |
1339 | ptr->ba_status || |
1340 | priv->wps.session_enable) { | |
4c9f9fb2 | 1341 | if (ptr->is_11n_enabled && |
39df5e82 ZL |
1342 | ptr->ba_status && |
1343 | ptr->amsdu_in_ampdu && | |
1344 | mwifiex_is_amsdu_allowed(priv, tid) && | |
1345 | mwifiex_is_11n_aggragation_possible(priv, ptr, | |
4c9f9fb2 AK |
1346 | adapter->tx_buf_size)) |
1347 | mwifiex_11n_aggregate_pkt(priv, ptr, ptr_index, flags); | |
1348 | /* ra_list_spinlock has been freed in | |
1349 | * mwifiex_11n_aggregate_pkt() | |
1350 | */ | |
1351 | else | |
1352 | mwifiex_send_single_packet(priv, ptr, ptr_index, flags); | |
1353 | /* ra_list_spinlock has been freed in | |
1354 | * mwifiex_send_single_packet() | |
1355 | */ | |
5e6e3a92 | 1356 | } else { |
eac43227 | 1357 | if (mwifiex_is_ampdu_allowed(priv, ptr, tid) && |
f0cb84f8 | 1358 | ptr->ba_pkt_count > ptr->ba_packet_thr) { |
53d7938e | 1359 | if (mwifiex_space_avail_for_new_ba_stream(adapter)) { |
3e822635 YAP |
1360 | mwifiex_create_ba_tbl(priv, ptr->ra, tid, |
1361 | BA_SETUP_INPROGRESS); | |
5e6e3a92 BZ |
1362 | mwifiex_send_addba(priv, tid, ptr->ra); |
1363 | } else if (mwifiex_find_stream_to_delete | |
572e8f3e | 1364 | (priv, tid, &tid_del, ra)) { |
3e822635 YAP |
1365 | mwifiex_create_ba_tbl(priv, ptr->ra, tid, |
1366 | BA_SETUP_INPROGRESS); | |
5e6e3a92 BZ |
1367 | mwifiex_send_delba(priv, tid_del, ra, 1); |
1368 | } | |
1369 | } | |
4c9f9fb2 | 1370 | if (mwifiex_is_amsdu_allowed(priv, tid) && |
d85c5fe4 AK |
1371 | mwifiex_is_11n_aggragation_possible(priv, ptr, |
1372 | adapter->tx_buf_size)) | |
bd1c6142 | 1373 | mwifiex_11n_aggregate_pkt(priv, ptr, ptr_index, flags); |
5e6e3a92 BZ |
1374 | /* ra_list_spinlock has been freed in |
1375 | mwifiex_11n_aggregate_pkt() */ | |
1376 | else | |
1377 | mwifiex_send_single_packet(priv, ptr, ptr_index, flags); | |
1378 | /* ra_list_spinlock has been freed in | |
1379 | mwifiex_send_single_packet() */ | |
1380 | } | |
1381 | return 0; | |
1382 | } | |
1383 | ||
1384 | /* | |
1385 | * This function transmits the highest priority packet awaiting in the | |
1386 | * WMM Queues. | |
1387 | */ | |
1388 | void | |
1389 | mwifiex_wmm_process_tx(struct mwifiex_adapter *adapter) | |
1390 | { | |
1391 | do { | |
5e6e3a92 BZ |
1392 | if (mwifiex_dequeue_tx_packet(adapter)) |
1393 | break; | |
e35000ea ZL |
1394 | if (adapter->iface_type != MWIFIEX_SDIO) { |
1395 | if (adapter->data_sent || | |
1396 | adapter->tx_lock_flag) | |
1397 | break; | |
1398 | } else { | |
1399 | if (atomic_read(&adapter->tx_queued) >= | |
1400 | MWIFIEX_MAX_PKTS_TXQ) | |
1401 | break; | |
1402 | } | |
93968147 | 1403 | } while (!mwifiex_wmm_lists_empty(adapter)); |
5e6e3a92 | 1404 | } |