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