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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 BZ |
109 | |
110 | dev_dbg(adapter->dev, "info: allocated ra_list %p\n", ra_list); | |
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); | |
153 | dev_dbg(adapter->dev, "info: created ra_list %p\n", ra_list); | |
154 | ||
155 | if (!ra_list) | |
156 | break; | |
157 | ||
5a009adf | 158 | ra_list->is_11n_enabled = 0; |
daeb5bb4 | 159 | ra_list->tdls_link = false; |
5a009adf | 160 | if (!mwifiex_queuing_ra_based(priv)) { |
daeb5bb4 AP |
161 | if (mwifiex_get_tdls_link_status(priv, ra) == |
162 | TDLS_SETUP_COMPLETE) { | |
a983e48b | 163 | ra_list->tdls_link = true; |
daeb5bb4 AP |
164 | ra_list->is_11n_enabled = |
165 | mwifiex_tdls_peer_11n_enabled(priv, ra); | |
166 | } else { | |
167 | ra_list->is_11n_enabled = IS_11N_ENABLED(priv); | |
168 | } | |
5a009adf | 169 | } else { |
c11fb985 AP |
170 | spin_lock_irqsave(&priv->sta_list_spinlock, flags); |
171 | node = mwifiex_get_sta_entry(priv, ra); | |
5a009adf AP |
172 | ra_list->is_11n_enabled = |
173 | mwifiex_is_sta_11n_enabled(priv, node); | |
174 | if (ra_list->is_11n_enabled) | |
175 | ra_list->max_amsdu = node->max_amsdu; | |
c11fb985 | 176 | spin_unlock_irqrestore(&priv->sta_list_spinlock, flags); |
5a009adf | 177 | } |
5e6e3a92 BZ |
178 | |
179 | dev_dbg(adapter->dev, "data: ralist %p: is_11n_enabled=%d\n", | |
180 | ra_list, ra_list->is_11n_enabled); | |
181 | ||
5a009adf | 182 | if (ra_list->is_11n_enabled) { |
f0cb84f8 | 183 | ra_list->ba_pkt_count = 0; |
5a009adf AP |
184 | ra_list->ba_packet_thr = |
185 | mwifiex_get_random_ba_threshold(); | |
186 | } | |
5e6e3a92 | 187 | list_add_tail(&ra_list->list, |
c65a30f3 | 188 | &priv->wmm.tid_tbl_ptr[i].ra_list); |
5e6e3a92 BZ |
189 | } |
190 | } | |
191 | ||
192 | /* | |
193 | * This function sets the WMM queue priorities to their default values. | |
194 | */ | |
195 | static void mwifiex_wmm_default_queue_priorities(struct mwifiex_private *priv) | |
196 | { | |
197 | /* Default queue priorities: VO->VI->BE->BK */ | |
198 | priv->wmm.queue_priority[0] = WMM_AC_VO; | |
199 | priv->wmm.queue_priority[1] = WMM_AC_VI; | |
200 | priv->wmm.queue_priority[2] = WMM_AC_BE; | |
201 | priv->wmm.queue_priority[3] = WMM_AC_BK; | |
202 | } | |
203 | ||
204 | /* | |
205 | * This function map ACs to TIDs. | |
206 | */ | |
207 | static void | |
41a24a29 | 208 | mwifiex_wmm_queue_priorities_tid(struct mwifiex_private *priv) |
5e6e3a92 | 209 | { |
41a24a29 | 210 | struct mwifiex_wmm_desc *wmm = &priv->wmm; |
49729ff6 | 211 | u8 *queue_priority = wmm->queue_priority; |
5e6e3a92 BZ |
212 | int i; |
213 | ||
214 | for (i = 0; i < 4; ++i) { | |
215 | tos_to_tid[7 - (i * 2)] = ac_to_tid[queue_priority[i]][1]; | |
216 | tos_to_tid[6 - (i * 2)] = ac_to_tid[queue_priority[i]][0]; | |
217 | } | |
49729ff6 MY |
218 | |
219 | for (i = 0; i < MAX_NUM_TID; ++i) | |
41a24a29 | 220 | priv->tos_to_tid_inv[tos_to_tid[i]] = (u8)i; |
49729ff6 MY |
221 | |
222 | atomic_set(&wmm->highest_queued_prio, HIGH_PRIO_TID); | |
5e6e3a92 BZ |
223 | } |
224 | ||
225 | /* | |
226 | * This function initializes WMM priority queues. | |
227 | */ | |
228 | void | |
229 | mwifiex_wmm_setup_queue_priorities(struct mwifiex_private *priv, | |
230 | struct ieee_types_wmm_parameter *wmm_ie) | |
231 | { | |
232 | u16 cw_min, avg_back_off, tmp[4]; | |
233 | u32 i, j, num_ac; | |
234 | u8 ac_idx; | |
235 | ||
236 | if (!wmm_ie || !priv->wmm_enabled) { | |
237 | /* WMM is not enabled, just set the defaults and return */ | |
238 | mwifiex_wmm_default_queue_priorities(priv); | |
239 | return; | |
240 | } | |
241 | ||
242 | dev_dbg(priv->adapter->dev, "info: WMM Parameter IE: version=%d, " | |
243 | "qos_info Parameter Set Count=%d, Reserved=%#x\n", | |
244 | wmm_ie->vend_hdr.version, wmm_ie->qos_info_bitmap & | |
245 | IEEE80211_WMM_IE_AP_QOSINFO_PARAM_SET_CNT_MASK, | |
246 | wmm_ie->reserved); | |
247 | ||
248 | for (num_ac = 0; num_ac < ARRAY_SIZE(wmm_ie->ac_params); num_ac++) { | |
c65a30f3 YAP |
249 | u8 ecw = wmm_ie->ac_params[num_ac].ecw_bitmap; |
250 | u8 aci_aifsn = wmm_ie->ac_params[num_ac].aci_aifsn_bitmap; | |
251 | cw_min = (1 << (ecw & MWIFIEX_ECW_MIN)) - 1; | |
252 | avg_back_off = (cw_min >> 1) + (aci_aifsn & MWIFIEX_AIFSN); | |
253 | ||
254 | ac_idx = wmm_aci_to_qidx_map[(aci_aifsn & MWIFIEX_ACI) >> 5]; | |
5e6e3a92 BZ |
255 | priv->wmm.queue_priority[ac_idx] = ac_idx; |
256 | tmp[ac_idx] = avg_back_off; | |
257 | ||
c65a30f3 YAP |
258 | dev_dbg(priv->adapter->dev, |
259 | "info: WMM: CWmax=%d CWmin=%d Avg Back-off=%d\n", | |
260 | (1 << ((ecw & MWIFIEX_ECW_MAX) >> 4)) - 1, | |
261 | cw_min, avg_back_off); | |
5e6e3a92 BZ |
262 | mwifiex_wmm_ac_debug_print(&wmm_ie->ac_params[num_ac]); |
263 | } | |
264 | ||
265 | /* Bubble sort */ | |
266 | for (i = 0; i < num_ac; i++) { | |
267 | for (j = 1; j < num_ac - i; j++) { | |
268 | if (tmp[j - 1] > tmp[j]) { | |
269 | swap(tmp[j - 1], tmp[j]); | |
270 | swap(priv->wmm.queue_priority[j - 1], | |
271 | priv->wmm.queue_priority[j]); | |
272 | } else if (tmp[j - 1] == tmp[j]) { | |
273 | if (priv->wmm.queue_priority[j - 1] | |
274 | < priv->wmm.queue_priority[j]) | |
275 | swap(priv->wmm.queue_priority[j - 1], | |
276 | priv->wmm.queue_priority[j]); | |
277 | } | |
278 | } | |
279 | } | |
280 | ||
41a24a29 | 281 | mwifiex_wmm_queue_priorities_tid(priv); |
5e6e3a92 BZ |
282 | } |
283 | ||
284 | /* | |
285 | * This function evaluates whether or not an AC is to be downgraded. | |
286 | * | |
287 | * In case the AC is not enabled, the highest AC is returned that is | |
288 | * enabled and does not require admission control. | |
289 | */ | |
290 | static enum mwifiex_wmm_ac_e | |
291 | mwifiex_wmm_eval_downgrade_ac(struct mwifiex_private *priv, | |
292 | enum mwifiex_wmm_ac_e eval_ac) | |
293 | { | |
294 | int down_ac; | |
295 | enum mwifiex_wmm_ac_e ret_ac; | |
296 | struct mwifiex_wmm_ac_status *ac_status; | |
297 | ||
298 | ac_status = &priv->wmm.ac_status[eval_ac]; | |
299 | ||
300 | if (!ac_status->disabled) | |
301 | /* Okay to use this AC, its enabled */ | |
302 | return eval_ac; | |
303 | ||
304 | /* Setup a default return value of the lowest priority */ | |
305 | ret_ac = WMM_AC_BK; | |
306 | ||
307 | /* | |
308 | * Find the highest AC that is enabled and does not require | |
309 | * admission control. The spec disallows downgrading to an AC, | |
310 | * which is enabled due to a completed admission control. | |
311 | * Unadmitted traffic is not to be sent on an AC with admitted | |
312 | * traffic. | |
313 | */ | |
314 | for (down_ac = WMM_AC_BK; down_ac < eval_ac; down_ac++) { | |
315 | ac_status = &priv->wmm.ac_status[down_ac]; | |
316 | ||
317 | if (!ac_status->disabled && !ac_status->flow_required) | |
318 | /* AC is enabled and does not require admission | |
319 | control */ | |
320 | ret_ac = (enum mwifiex_wmm_ac_e) down_ac; | |
321 | } | |
322 | ||
323 | return ret_ac; | |
324 | } | |
325 | ||
326 | /* | |
327 | * This function downgrades WMM priority queue. | |
328 | */ | |
329 | void | |
330 | mwifiex_wmm_setup_ac_downgrade(struct mwifiex_private *priv) | |
331 | { | |
332 | int ac_val; | |
333 | ||
334 | dev_dbg(priv->adapter->dev, "info: WMM: AC Priorities:" | |
335 | "BK(0), BE(1), VI(2), VO(3)\n"); | |
336 | ||
337 | if (!priv->wmm_enabled) { | |
338 | /* WMM is not enabled, default priorities */ | |
339 | for (ac_val = WMM_AC_BK; ac_val <= WMM_AC_VO; ac_val++) | |
340 | priv->wmm.ac_down_graded_vals[ac_val] = | |
c65a30f3 | 341 | (enum mwifiex_wmm_ac_e) ac_val; |
5e6e3a92 BZ |
342 | } else { |
343 | for (ac_val = WMM_AC_BK; ac_val <= WMM_AC_VO; ac_val++) { | |
344 | priv->wmm.ac_down_graded_vals[ac_val] | |
345 | = mwifiex_wmm_eval_downgrade_ac(priv, | |
346 | (enum mwifiex_wmm_ac_e) ac_val); | |
c65a30f3 YAP |
347 | dev_dbg(priv->adapter->dev, |
348 | "info: WMM: AC PRIO %d maps to %d\n", | |
5e6e3a92 BZ |
349 | ac_val, priv->wmm.ac_down_graded_vals[ac_val]); |
350 | } | |
351 | } | |
352 | } | |
353 | ||
354 | /* | |
355 | * This function converts the IP TOS field to an WMM AC | |
356 | * Queue assignment. | |
357 | */ | |
358 | static enum mwifiex_wmm_ac_e | |
359 | mwifiex_wmm_convert_tos_to_ac(struct mwifiex_adapter *adapter, u32 tos) | |
360 | { | |
361 | /* Map of TOS UP values to WMM AC */ | |
362 | const enum mwifiex_wmm_ac_e tos_to_ac[] = { WMM_AC_BE, | |
363 | WMM_AC_BK, | |
364 | WMM_AC_BK, | |
365 | WMM_AC_BE, | |
366 | WMM_AC_VI, | |
367 | WMM_AC_VI, | |
368 | WMM_AC_VO, | |
369 | WMM_AC_VO | |
370 | }; | |
371 | ||
372 | if (tos >= ARRAY_SIZE(tos_to_ac)) | |
373 | return WMM_AC_BE; | |
374 | ||
375 | return tos_to_ac[tos]; | |
376 | } | |
377 | ||
378 | /* | |
379 | * This function evaluates a given TID and downgrades it to a lower | |
380 | * TID if the WMM Parameter IE received from the AP indicates that the | |
381 | * AP is disabled (due to call admission control (ACM bit). Mapping | |
382 | * of TID to AC is taken care of internally. | |
383 | */ | |
5f2caaf3 | 384 | u8 mwifiex_wmm_downgrade_tid(struct mwifiex_private *priv, u32 tid) |
5e6e3a92 BZ |
385 | { |
386 | enum mwifiex_wmm_ac_e ac, ac_down; | |
387 | u8 new_tid; | |
388 | ||
389 | ac = mwifiex_wmm_convert_tos_to_ac(priv->adapter, tid); | |
390 | ac_down = priv->wmm.ac_down_graded_vals[ac]; | |
391 | ||
392 | /* Send the index to tid array, picking from the array will be | |
393 | * taken care by dequeuing function | |
394 | */ | |
395 | new_tid = ac_to_tid[ac_down][tid % 2]; | |
396 | ||
397 | return new_tid; | |
398 | } | |
399 | ||
400 | /* | |
401 | * This function initializes the WMM state information and the | |
402 | * WMM data path queues. | |
403 | */ | |
404 | void | |
405 | mwifiex_wmm_init(struct mwifiex_adapter *adapter) | |
406 | { | |
407 | int i, j; | |
408 | struct mwifiex_private *priv; | |
409 | ||
410 | for (j = 0; j < adapter->priv_num; ++j) { | |
411 | priv = adapter->priv[j]; | |
412 | if (!priv) | |
413 | continue; | |
414 | ||
415 | for (i = 0; i < MAX_NUM_TID; ++i) { | |
4c9f9fb2 AK |
416 | if (!disable_tx_amsdu && |
417 | adapter->tx_buf_size > MWIFIEX_TX_DATA_BUF_SIZE_2K) | |
418 | priv->aggr_prio_tbl[i].amsdu = | |
419 | priv->tos_to_tid_inv[i]; | |
420 | else | |
421 | priv->aggr_prio_tbl[i].amsdu = | |
422 | BA_STREAM_NOT_ALLOWED; | |
41a24a29 AP |
423 | priv->aggr_prio_tbl[i].ampdu_ap = |
424 | priv->tos_to_tid_inv[i]; | |
425 | priv->aggr_prio_tbl[i].ampdu_user = | |
426 | priv->tos_to_tid_inv[i]; | |
5e6e3a92 BZ |
427 | } |
428 | ||
04abc0a3 | 429 | mwifiex_set_ba_params(priv); |
92583924 SP |
430 | mwifiex_reset_11n_rx_seq_num(priv); |
431 | ||
f699254c | 432 | atomic_set(&priv->wmm.tx_pkts_queued, 0); |
49729ff6 | 433 | atomic_set(&priv->wmm.highest_queued_prio, HIGH_PRIO_TID); |
5e6e3a92 BZ |
434 | } |
435 | } | |
436 | ||
437 | /* | |
438 | * This function checks if WMM Tx queue is empty. | |
439 | */ | |
440 | int | |
441 | mwifiex_wmm_lists_empty(struct mwifiex_adapter *adapter) | |
442 | { | |
f699254c | 443 | int i; |
5e6e3a92 BZ |
444 | struct mwifiex_private *priv; |
445 | ||
f699254c MY |
446 | for (i = 0; i < adapter->priv_num; ++i) { |
447 | priv = adapter->priv[i]; | |
448 | if (priv && atomic_read(&priv->wmm.tx_pkts_queued)) | |
a8aa69dc | 449 | return false; |
5e6e3a92 BZ |
450 | } |
451 | ||
452 | return true; | |
453 | } | |
454 | ||
455 | /* | |
456 | * This function deletes all packets in an RA list node. | |
457 | * | |
458 | * The packet sent completion callback handler are called with | |
459 | * status failure, after they are dequeued to ensure proper | |
460 | * cleanup. The RA list node itself is freed at the end. | |
461 | */ | |
462 | static void | |
463 | mwifiex_wmm_del_pkts_in_ralist_node(struct mwifiex_private *priv, | |
464 | struct mwifiex_ra_list_tbl *ra_list) | |
465 | { | |
466 | struct mwifiex_adapter *adapter = priv->adapter; | |
467 | struct sk_buff *skb, *tmp; | |
468 | ||
469 | skb_queue_walk_safe(&ra_list->skb_head, skb, tmp) | |
47411a06 | 470 | mwifiex_write_data_complete(adapter, skb, 0, -1); |
5e6e3a92 BZ |
471 | } |
472 | ||
473 | /* | |
474 | * This function deletes all packets in an RA list. | |
475 | * | |
476 | * Each nodes in the RA list are freed individually first, and then | |
477 | * the RA list itself is freed. | |
478 | */ | |
479 | static void | |
480 | mwifiex_wmm_del_pkts_in_ralist(struct mwifiex_private *priv, | |
481 | struct list_head *ra_list_head) | |
482 | { | |
483 | struct mwifiex_ra_list_tbl *ra_list; | |
484 | ||
485 | list_for_each_entry(ra_list, ra_list_head, list) | |
486 | mwifiex_wmm_del_pkts_in_ralist_node(priv, ra_list); | |
487 | } | |
488 | ||
489 | /* | |
490 | * This function deletes all packets in all RA lists. | |
491 | */ | |
492 | static void mwifiex_wmm_cleanup_queues(struct mwifiex_private *priv) | |
493 | { | |
494 | int i; | |
495 | ||
496 | for (i = 0; i < MAX_NUM_TID; i++) | |
497 | mwifiex_wmm_del_pkts_in_ralist(priv, &priv->wmm.tid_tbl_ptr[i]. | |
c65a30f3 | 498 | ra_list); |
f699254c MY |
499 | |
500 | atomic_set(&priv->wmm.tx_pkts_queued, 0); | |
49729ff6 | 501 | atomic_set(&priv->wmm.highest_queued_prio, HIGH_PRIO_TID); |
5e6e3a92 BZ |
502 | } |
503 | ||
504 | /* | |
505 | * This function deletes all route addresses from all RA lists. | |
506 | */ | |
507 | static void mwifiex_wmm_delete_all_ralist(struct mwifiex_private *priv) | |
508 | { | |
509 | struct mwifiex_ra_list_tbl *ra_list, *tmp_node; | |
510 | int i; | |
511 | ||
512 | for (i = 0; i < MAX_NUM_TID; ++i) { | |
513 | dev_dbg(priv->adapter->dev, | |
c65a30f3 | 514 | "info: ra_list: freeing buf for tid %d\n", i); |
5e6e3a92 | 515 | list_for_each_entry_safe(ra_list, tmp_node, |
c65a30f3 YAP |
516 | &priv->wmm.tid_tbl_ptr[i].ra_list, |
517 | list) { | |
5e6e3a92 BZ |
518 | list_del(&ra_list->list); |
519 | kfree(ra_list); | |
520 | } | |
521 | ||
522 | INIT_LIST_HEAD(&priv->wmm.tid_tbl_ptr[i].ra_list); | |
5e6e3a92 BZ |
523 | } |
524 | } | |
525 | ||
808bbebc AK |
526 | static int mwifiex_free_ack_frame(int id, void *p, void *data) |
527 | { | |
528 | pr_warn("Have pending ack frames!\n"); | |
529 | kfree_skb(p); | |
530 | return 0; | |
531 | } | |
532 | ||
5e6e3a92 BZ |
533 | /* |
534 | * This function cleans up the Tx and Rx queues. | |
535 | * | |
536 | * Cleanup includes - | |
537 | * - All packets in RA lists | |
538 | * - All entries in Rx reorder table | |
539 | * - All entries in Tx BA stream table | |
540 | * - MPA buffer (if required) | |
541 | * - All RA lists | |
542 | */ | |
543 | void | |
544 | mwifiex_clean_txrx(struct mwifiex_private *priv) | |
545 | { | |
546 | unsigned long flags; | |
56bd24a1 | 547 | struct sk_buff *skb, *tmp; |
5e6e3a92 BZ |
548 | |
549 | mwifiex_11n_cleanup_reorder_tbl(priv); | |
550 | spin_lock_irqsave(&priv->wmm.ra_list_spinlock, flags); | |
551 | ||
552 | mwifiex_wmm_cleanup_queues(priv); | |
553 | mwifiex_11n_delete_all_tx_ba_stream_tbl(priv); | |
554 | ||
555 | if (priv->adapter->if_ops.cleanup_mpa_buf) | |
556 | priv->adapter->if_ops.cleanup_mpa_buf(priv->adapter); | |
557 | ||
558 | mwifiex_wmm_delete_all_ralist(priv); | |
559 | memcpy(tos_to_tid, ac_to_tid, sizeof(tos_to_tid)); | |
560 | ||
4f7ba432 AP |
561 | if (priv->adapter->if_ops.clean_pcie_ring && |
562 | !priv->adapter->surprise_removed) | |
fbd7e7ac | 563 | priv->adapter->if_ops.clean_pcie_ring(priv->adapter); |
5e6e3a92 | 564 | spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, flags); |
56bd24a1 AP |
565 | |
566 | skb_queue_walk_safe(&priv->tdls_txq, skb, tmp) | |
567 | mwifiex_write_data_complete(priv->adapter, skb, 0, -1); | |
808bbebc AK |
568 | |
569 | idr_for_each(&priv->ack_status_frames, mwifiex_free_ack_frame, NULL); | |
570 | idr_destroy(&priv->ack_status_frames); | |
5e6e3a92 BZ |
571 | } |
572 | ||
573 | /* | |
574 | * This function retrieves a particular RA list node, matching with the | |
575 | * given TID and RA address. | |
576 | */ | |
577 | static struct mwifiex_ra_list_tbl * | |
578 | mwifiex_wmm_get_ralist_node(struct mwifiex_private *priv, u8 tid, | |
3b3a0162 | 579 | const u8 *ra_addr) |
5e6e3a92 BZ |
580 | { |
581 | struct mwifiex_ra_list_tbl *ra_list; | |
582 | ||
583 | list_for_each_entry(ra_list, &priv->wmm.tid_tbl_ptr[tid].ra_list, | |
584 | list) { | |
585 | if (!memcmp(ra_list->ra, ra_addr, ETH_ALEN)) | |
586 | return ra_list; | |
587 | } | |
588 | ||
589 | return NULL; | |
590 | } | |
591 | ||
592 | /* | |
593 | * This function retrieves an RA list node for a given TID and | |
594 | * RA address pair. | |
595 | * | |
596 | * If no such node is found, a new node is added first and then | |
597 | * retrieved. | |
598 | */ | |
5f2caaf3 | 599 | struct mwifiex_ra_list_tbl * |
3b3a0162 JB |
600 | mwifiex_wmm_get_queue_raptr(struct mwifiex_private *priv, u8 tid, |
601 | const u8 *ra_addr) | |
5e6e3a92 BZ |
602 | { |
603 | struct mwifiex_ra_list_tbl *ra_list; | |
604 | ||
605 | ra_list = mwifiex_wmm_get_ralist_node(priv, tid, ra_addr); | |
606 | if (ra_list) | |
607 | return ra_list; | |
608 | mwifiex_ralist_add(priv, ra_addr); | |
609 | ||
610 | return mwifiex_wmm_get_ralist_node(priv, tid, ra_addr); | |
611 | } | |
612 | ||
9817fffb AP |
613 | /* |
614 | * This function deletes RA list nodes for given mac for all TIDs. | |
615 | * Function also decrements TX pending count accordingly. | |
616 | */ | |
617 | void | |
618 | mwifiex_wmm_del_peer_ra_list(struct mwifiex_private *priv, const u8 *ra_addr) | |
619 | { | |
620 | struct mwifiex_ra_list_tbl *ra_list; | |
621 | unsigned long flags; | |
622 | int i; | |
623 | ||
624 | spin_lock_irqsave(&priv->wmm.ra_list_spinlock, flags); | |
625 | ||
626 | for (i = 0; i < MAX_NUM_TID; ++i) { | |
627 | ra_list = mwifiex_wmm_get_ralist_node(priv, i, ra_addr); | |
628 | ||
629 | if (!ra_list) | |
630 | continue; | |
631 | mwifiex_wmm_del_pkts_in_ralist_node(priv, ra_list); | |
632 | atomic_sub(ra_list->total_pkt_count, &priv->wmm.tx_pkts_queued); | |
633 | list_del(&ra_list->list); | |
634 | kfree(ra_list); | |
635 | } | |
636 | spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, flags); | |
637 | } | |
638 | ||
5e6e3a92 BZ |
639 | /* |
640 | * This function checks if a particular RA list node exists in a given TID | |
641 | * table index. | |
642 | */ | |
643 | int | |
644 | mwifiex_is_ralist_valid(struct mwifiex_private *priv, | |
645 | struct mwifiex_ra_list_tbl *ra_list, int ptr_index) | |
646 | { | |
647 | struct mwifiex_ra_list_tbl *rlist; | |
648 | ||
649 | list_for_each_entry(rlist, &priv->wmm.tid_tbl_ptr[ptr_index].ra_list, | |
650 | list) { | |
651 | if (rlist == ra_list) | |
652 | return true; | |
653 | } | |
654 | ||
655 | return false; | |
656 | } | |
657 | ||
658 | /* | |
659 | * This function adds a packet to WMM queue. | |
660 | * | |
661 | * In disconnected state the packet is immediately dropped and the | |
662 | * packet send completion callback is called with status failure. | |
663 | * | |
664 | * Otherwise, the correct RA list node is located and the packet | |
665 | * is queued at the list tail. | |
666 | */ | |
667 | void | |
2690e1bb | 668 | mwifiex_wmm_add_buf_txqueue(struct mwifiex_private *priv, |
5e6e3a92 BZ |
669 | struct sk_buff *skb) |
670 | { | |
2690e1bb | 671 | struct mwifiex_adapter *adapter = priv->adapter; |
5e6e3a92 BZ |
672 | u32 tid; |
673 | struct mwifiex_ra_list_tbl *ra_list; | |
674 | u8 ra[ETH_ALEN], tid_down; | |
675 | unsigned long flags; | |
d63bf5e5 AP |
676 | struct list_head list_head; |
677 | int tdls_status = TDLS_NOT_SETUP; | |
678 | struct ethhdr *eth_hdr = (struct ethhdr *)skb->data; | |
679 | struct mwifiex_txinfo *tx_info = MWIFIEX_SKB_TXCB(skb); | |
680 | ||
681 | memcpy(ra, eth_hdr->h_dest, ETH_ALEN); | |
682 | ||
683 | if (GET_BSS_ROLE(priv) == MWIFIEX_BSS_ROLE_STA && | |
684 | ISSUPP_TDLS_ENABLED(adapter->fw_cap_info)) { | |
685 | if (ntohs(eth_hdr->h_proto) == ETH_P_TDLS) | |
686 | dev_dbg(adapter->dev, | |
687 | "TDLS setup packet for %pM. Don't block\n", ra); | |
16e8552a | 688 | else if (memcmp(priv->cfg_bssid, ra, ETH_ALEN)) |
d63bf5e5 AP |
689 | tdls_status = mwifiex_get_tdls_link_status(priv, ra); |
690 | } | |
5e6e3a92 | 691 | |
e39faa73 | 692 | if (!priv->media_connected && !mwifiex_is_skb_mgmt_frame(skb)) { |
5e6e3a92 | 693 | dev_dbg(adapter->dev, "data: drop packet in disconnect\n"); |
47411a06 | 694 | mwifiex_write_data_complete(adapter, skb, 0, -1); |
5e6e3a92 BZ |
695 | return; |
696 | } | |
697 | ||
698 | tid = skb->priority; | |
699 | ||
700 | spin_lock_irqsave(&priv->wmm.ra_list_spinlock, flags); | |
701 | ||
702 | tid_down = mwifiex_wmm_downgrade_tid(priv, tid); | |
703 | ||
704 | /* In case of infra as we have already created the list during | |
705 | association we just don't have to call get_queue_raptr, we will | |
706 | have only 1 raptr for a tid in case of infra */ | |
e39faa73 SP |
707 | if (!mwifiex_queuing_ra_based(priv) && |
708 | !mwifiex_is_skb_mgmt_frame(skb)) { | |
d63bf5e5 AP |
709 | switch (tdls_status) { |
710 | case TDLS_SETUP_COMPLETE: | |
711 | ra_list = mwifiex_wmm_get_queue_raptr(priv, tid_down, | |
712 | ra); | |
713 | tx_info->flags |= MWIFIEX_BUF_FLAG_TDLS_PKT; | |
714 | break; | |
715 | case TDLS_SETUP_INPROGRESS: | |
716 | skb_queue_tail(&priv->tdls_txq, skb); | |
717 | spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, | |
718 | flags); | |
719 | return; | |
720 | default: | |
721 | list_head = priv->wmm.tid_tbl_ptr[tid_down].ra_list; | |
722 | if (!list_empty(&list_head)) | |
723 | ra_list = list_first_entry( | |
724 | &list_head, struct mwifiex_ra_list_tbl, | |
725 | list); | |
726 | else | |
727 | ra_list = NULL; | |
728 | break; | |
729 | } | |
5e6e3a92 BZ |
730 | } else { |
731 | memcpy(ra, skb->data, ETH_ALEN); | |
e39faa73 | 732 | if (ra[0] & 0x01 || mwifiex_is_skb_mgmt_frame(skb)) |
4e3c4420 | 733 | memset(ra, 0xff, ETH_ALEN); |
5e6e3a92 BZ |
734 | ra_list = mwifiex_wmm_get_queue_raptr(priv, tid_down, ra); |
735 | } | |
736 | ||
737 | if (!ra_list) { | |
738 | spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, flags); | |
47411a06 | 739 | mwifiex_write_data_complete(adapter, skb, 0, -1); |
5e6e3a92 BZ |
740 | return; |
741 | } | |
742 | ||
743 | skb_queue_tail(&ra_list->skb_head, skb); | |
744 | ||
f0cb84f8 | 745 | ra_list->ba_pkt_count++; |
c7d9ed9e | 746 | ra_list->total_pkt_count++; |
5e6e3a92 | 747 | |
49729ff6 | 748 | if (atomic_read(&priv->wmm.highest_queued_prio) < |
41a24a29 | 749 | priv->tos_to_tid_inv[tid_down]) |
49729ff6 | 750 | atomic_set(&priv->wmm.highest_queued_prio, |
41a24a29 | 751 | priv->tos_to_tid_inv[tid_down]); |
49729ff6 | 752 | |
2716fd7d AF |
753 | atomic_inc(&priv->wmm.tx_pkts_queued); |
754 | ||
5e6e3a92 BZ |
755 | spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, flags); |
756 | } | |
757 | ||
758 | /* | |
759 | * This function processes the get WMM status command response from firmware. | |
760 | * | |
761 | * The response may contain multiple TLVs - | |
762 | * - AC Queue status TLVs | |
763 | * - Current WMM Parameter IE TLV | |
764 | * - Admission Control action frame TLVs | |
765 | * | |
766 | * This function parses the TLVs and then calls further specific functions | |
767 | * to process any changes in the queue prioritize or state. | |
768 | */ | |
769 | int mwifiex_ret_wmm_get_status(struct mwifiex_private *priv, | |
770 | const struct host_cmd_ds_command *resp) | |
771 | { | |
772 | u8 *curr = (u8 *) &resp->params.get_wmm_status; | |
773 | uint16_t resp_len = le16_to_cpu(resp->size), tlv_len; | |
c856197d | 774 | bool valid = true; |
5e6e3a92 BZ |
775 | |
776 | struct mwifiex_ie_types_data *tlv_hdr; | |
777 | struct mwifiex_ie_types_wmm_queue_status *tlv_wmm_qstatus; | |
778 | struct ieee_types_wmm_parameter *wmm_param_ie = NULL; | |
779 | struct mwifiex_wmm_ac_status *ac_status; | |
780 | ||
781 | dev_dbg(priv->adapter->dev, "info: WMM: WMM_GET_STATUS cmdresp received: %d\n", | |
c65a30f3 | 782 | resp_len); |
5e6e3a92 BZ |
783 | |
784 | while ((resp_len >= sizeof(tlv_hdr->header)) && valid) { | |
785 | tlv_hdr = (struct mwifiex_ie_types_data *) curr; | |
786 | tlv_len = le16_to_cpu(tlv_hdr->header.len); | |
787 | ||
95edbc30 DC |
788 | if (resp_len < tlv_len + sizeof(tlv_hdr->header)) |
789 | break; | |
790 | ||
5e6e3a92 BZ |
791 | switch (le16_to_cpu(tlv_hdr->header.type)) { |
792 | case TLV_TYPE_WMMQSTATUS: | |
793 | tlv_wmm_qstatus = | |
794 | (struct mwifiex_ie_types_wmm_queue_status *) | |
795 | tlv_hdr; | |
796 | dev_dbg(priv->adapter->dev, | |
797 | "info: CMD_RESP: WMM_GET_STATUS:" | |
798 | " QSTATUS TLV: %d, %d, %d\n", | |
c65a30f3 YAP |
799 | tlv_wmm_qstatus->queue_index, |
800 | tlv_wmm_qstatus->flow_required, | |
801 | tlv_wmm_qstatus->disabled); | |
5e6e3a92 BZ |
802 | |
803 | ac_status = &priv->wmm.ac_status[tlv_wmm_qstatus-> | |
804 | queue_index]; | |
805 | ac_status->disabled = tlv_wmm_qstatus->disabled; | |
806 | ac_status->flow_required = | |
c65a30f3 | 807 | tlv_wmm_qstatus->flow_required; |
5e6e3a92 BZ |
808 | ac_status->flow_created = tlv_wmm_qstatus->flow_created; |
809 | break; | |
810 | ||
811 | case WLAN_EID_VENDOR_SPECIFIC: | |
812 | /* | |
813 | * Point the regular IEEE IE 2 bytes into the Marvell IE | |
814 | * and setup the IEEE IE type and length byte fields | |
815 | */ | |
816 | ||
817 | wmm_param_ie = | |
818 | (struct ieee_types_wmm_parameter *) (curr + | |
819 | 2); | |
820 | wmm_param_ie->vend_hdr.len = (u8) tlv_len; | |
821 | wmm_param_ie->vend_hdr.element_id = | |
822 | WLAN_EID_VENDOR_SPECIFIC; | |
823 | ||
824 | dev_dbg(priv->adapter->dev, | |
825 | "info: CMD_RESP: WMM_GET_STATUS:" | |
826 | " WMM Parameter Set Count: %d\n", | |
827 | wmm_param_ie->qos_info_bitmap & | |
828 | IEEE80211_WMM_IE_AP_QOSINFO_PARAM_SET_CNT_MASK); | |
829 | ||
830 | memcpy((u8 *) &priv->curr_bss_params.bss_descriptor. | |
831 | wmm_ie, wmm_param_ie, | |
832 | wmm_param_ie->vend_hdr.len + 2); | |
833 | ||
834 | break; | |
835 | ||
836 | default: | |
837 | valid = false; | |
838 | break; | |
839 | } | |
840 | ||
841 | curr += (tlv_len + sizeof(tlv_hdr->header)); | |
842 | resp_len -= (tlv_len + sizeof(tlv_hdr->header)); | |
843 | } | |
844 | ||
845 | mwifiex_wmm_setup_queue_priorities(priv, wmm_param_ie); | |
846 | mwifiex_wmm_setup_ac_downgrade(priv); | |
847 | ||
848 | return 0; | |
849 | } | |
850 | ||
851 | /* | |
852 | * Callback handler from the command module to allow insertion of a WMM TLV. | |
853 | * | |
854 | * If the BSS we are associating to supports WMM, this function adds the | |
855 | * required WMM Information IE to the association request command buffer in | |
856 | * the form of a Marvell extended IEEE IE. | |
857 | */ | |
858 | u32 | |
859 | mwifiex_wmm_process_association_req(struct mwifiex_private *priv, | |
860 | u8 **assoc_buf, | |
861 | struct ieee_types_wmm_parameter *wmm_ie, | |
862 | struct ieee80211_ht_cap *ht_cap) | |
863 | { | |
864 | struct mwifiex_ie_types_wmm_param_set *wmm_tlv; | |
865 | u32 ret_len = 0; | |
866 | ||
867 | /* Null checks */ | |
868 | if (!assoc_buf) | |
869 | return 0; | |
870 | if (!(*assoc_buf)) | |
871 | return 0; | |
872 | ||
873 | if (!wmm_ie) | |
874 | return 0; | |
875 | ||
c65a30f3 YAP |
876 | dev_dbg(priv->adapter->dev, |
877 | "info: WMM: process assoc req: bss->wmm_ie=%#x\n", | |
878 | wmm_ie->vend_hdr.element_id); | |
5e6e3a92 | 879 | |
c65a30f3 YAP |
880 | if ((priv->wmm_required || |
881 | (ht_cap && (priv->adapter->config_bands & BAND_GN || | |
882 | priv->adapter->config_bands & BAND_AN))) && | |
883 | wmm_ie->vend_hdr.element_id == WLAN_EID_VENDOR_SPECIFIC) { | |
5e6e3a92 BZ |
884 | wmm_tlv = (struct mwifiex_ie_types_wmm_param_set *) *assoc_buf; |
885 | wmm_tlv->header.type = cpu_to_le16((u16) wmm_info_ie[0]); | |
886 | wmm_tlv->header.len = cpu_to_le16((u16) wmm_info_ie[1]); | |
887 | memcpy(wmm_tlv->wmm_ie, &wmm_info_ie[2], | |
c65a30f3 | 888 | le16_to_cpu(wmm_tlv->header.len)); |
5e6e3a92 BZ |
889 | if (wmm_ie->qos_info_bitmap & IEEE80211_WMM_IE_AP_QOSINFO_UAPSD) |
890 | memcpy((u8 *) (wmm_tlv->wmm_ie | |
c65a30f3 YAP |
891 | + le16_to_cpu(wmm_tlv->header.len) |
892 | - sizeof(priv->wmm_qosinfo)), | |
893 | &priv->wmm_qosinfo, sizeof(priv->wmm_qosinfo)); | |
5e6e3a92 BZ |
894 | |
895 | ret_len = sizeof(wmm_tlv->header) | |
c65a30f3 | 896 | + le16_to_cpu(wmm_tlv->header.len); |
5e6e3a92 BZ |
897 | |
898 | *assoc_buf += ret_len; | |
899 | } | |
900 | ||
901 | return ret_len; | |
902 | } | |
903 | ||
904 | /* | |
905 | * This function computes the time delay in the driver queues for a | |
906 | * given packet. | |
907 | * | |
908 | * When the packet is received at the OS/Driver interface, the current | |
909 | * time is set in the packet structure. The difference between the present | |
910 | * time and that received time is computed in this function and limited | |
911 | * based on pre-compiled limits in the driver. | |
912 | */ | |
913 | u8 | |
914 | mwifiex_wmm_compute_drv_pkt_delay(struct mwifiex_private *priv, | |
c65a30f3 | 915 | const struct sk_buff *skb) |
5e6e3a92 | 916 | { |
c64800e7 | 917 | u32 queue_delay = ktime_to_ms(net_timedelta(skb->tstamp)); |
270e58e8 | 918 | u8 ret_val; |
5e6e3a92 BZ |
919 | |
920 | /* | |
921 | * Queue delay is passed as a uint8 in units of 2ms (ms shifted | |
922 | * by 1). Min value (other than 0) is therefore 2ms, max is 510ms. | |
923 | * | |
924 | * Pass max value if queue_delay is beyond the uint8 range | |
925 | */ | |
926 | ret_val = (u8) (min(queue_delay, priv->wmm.drv_pkt_delay_max) >> 1); | |
927 | ||
928 | dev_dbg(priv->adapter->dev, "data: WMM: Pkt Delay: %d ms," | |
929 | " %d ms sent to FW\n", queue_delay, ret_val); | |
930 | ||
931 | return ret_val; | |
932 | } | |
933 | ||
934 | /* | |
935 | * This function retrieves the highest priority RA list table pointer. | |
936 | */ | |
937 | static struct mwifiex_ra_list_tbl * | |
938 | mwifiex_wmm_get_highest_priolist_ptr(struct mwifiex_adapter *adapter, | |
939 | struct mwifiex_private **priv, int *tid) | |
940 | { | |
941 | struct mwifiex_private *priv_tmp; | |
2e237319 | 942 | struct mwifiex_ra_list_tbl *ptr; |
5e6e3a92 | 943 | struct mwifiex_tid_tbl *tid_ptr; |
bb7de2ba | 944 | atomic_t *hqp; |
2716fd7d | 945 | unsigned long flags_bss, flags_ra; |
5e6e3a92 BZ |
946 | int i, j; |
947 | ||
b006ed54 | 948 | /* check the BSS with highest priority first */ |
5e6e3a92 BZ |
949 | for (j = adapter->priv_num - 1; j >= 0; --j) { |
950 | spin_lock_irqsave(&adapter->bss_prio_tbl[j].bss_prio_lock, | |
2716fd7d AF |
951 | flags_bss); |
952 | ||
b006ed54 AF |
953 | /* iterate over BSS with the equal priority */ |
954 | list_for_each_entry(adapter->bss_prio_tbl[j].bss_prio_cur, | |
955 | &adapter->bss_prio_tbl[j].bss_prio_head, | |
956 | list) { | |
16051b0e | 957 | |
b006ed54 | 958 | priv_tmp = adapter->bss_prio_tbl[j].bss_prio_cur->priv; |
5e6e3a92 | 959 | |
333f6b22 | 960 | if (atomic_read(&priv_tmp->wmm.tx_pkts_queued) == 0) |
b006ed54 | 961 | continue; |
333f6b22 AF |
962 | |
963 | /* iterate over the WMM queues of the BSS */ | |
964 | hqp = &priv_tmp->wmm.highest_queued_prio; | |
49729ff6 | 965 | for (i = atomic_read(hqp); i >= LOW_PRIO_TID; --i) { |
5e6e3a92 | 966 | |
2716fd7d AF |
967 | spin_lock_irqsave(&priv_tmp->wmm. |
968 | ra_list_spinlock, flags_ra); | |
969 | ||
5e6e3a92 BZ |
970 | tid_ptr = &(priv_tmp)->wmm. |
971 | tid_tbl_ptr[tos_to_tid[i]]; | |
972 | ||
2e237319 AF |
973 | /* iterate over receiver addresses */ |
974 | list_for_each_entry(ptr, &tid_ptr->ra_list, | |
975 | list) { | |
5e6e3a92 | 976 | |
2716fd7d AF |
977 | if (!skb_queue_empty(&ptr->skb_head)) |
978 | /* holds both locks */ | |
bb7de2ba | 979 | goto found; |
2e237319 | 980 | } |
bb7de2ba | 981 | |
2716fd7d AF |
982 | spin_unlock_irqrestore(&priv_tmp->wmm. |
983 | ra_list_spinlock, | |
984 | flags_ra); | |
5e6e3a92 | 985 | } |
b006ed54 | 986 | } |
5e6e3a92 | 987 | |
2716fd7d AF |
988 | spin_unlock_irqrestore(&adapter->bss_prio_tbl[j].bss_prio_lock, |
989 | flags_bss); | |
5e6e3a92 | 990 | } |
2716fd7d | 991 | |
5e6e3a92 | 992 | return NULL; |
bb7de2ba YAP |
993 | |
994 | found: | |
2716fd7d | 995 | /* holds bss_prio_lock / ra_list_spinlock */ |
bb7de2ba YAP |
996 | if (atomic_read(hqp) > i) |
997 | atomic_set(hqp, i); | |
2716fd7d AF |
998 | spin_unlock_irqrestore(&priv_tmp->wmm.ra_list_spinlock, flags_ra); |
999 | spin_unlock_irqrestore(&adapter->bss_prio_tbl[j].bss_prio_lock, | |
1000 | flags_bss); | |
bb7de2ba YAP |
1001 | |
1002 | *priv = priv_tmp; | |
1003 | *tid = tos_to_tid[i]; | |
1004 | ||
1005 | return ptr; | |
5e6e3a92 BZ |
1006 | } |
1007 | ||
b006ed54 | 1008 | /* This functions rotates ra and bss lists so packets are picked round robin. |
2e237319 AF |
1009 | * |
1010 | * After a packet is successfully transmitted, rotate the ra list, so the ra | |
1011 | * next to the one transmitted, will come first in the list. This way we pick | |
b006ed54 AF |
1012 | * the ra' in a round robin fashion. Same applies to bss nodes of equal |
1013 | * priority. | |
2e237319 AF |
1014 | * |
1015 | * Function also increments wmm.packets_out counter. | |
1016 | */ | |
1017 | void mwifiex_rotate_priolists(struct mwifiex_private *priv, | |
1018 | struct mwifiex_ra_list_tbl *ra, | |
1019 | int tid) | |
1020 | { | |
b006ed54 AF |
1021 | struct mwifiex_adapter *adapter = priv->adapter; |
1022 | struct mwifiex_bss_prio_tbl *tbl = adapter->bss_prio_tbl; | |
2e237319 AF |
1023 | struct mwifiex_tid_tbl *tid_ptr = &priv->wmm.tid_tbl_ptr[tid]; |
1024 | unsigned long flags; | |
1025 | ||
b006ed54 AF |
1026 | spin_lock_irqsave(&tbl[priv->bss_priority].bss_prio_lock, flags); |
1027 | /* | |
1028 | * dirty trick: we remove 'head' temporarily and reinsert it after | |
1029 | * curr bss node. imagine list to stay fixed while head is moved | |
1030 | */ | |
1031 | list_move(&tbl[priv->bss_priority].bss_prio_head, | |
1032 | &tbl[priv->bss_priority].bss_prio_cur->list); | |
1033 | spin_unlock_irqrestore(&tbl[priv->bss_priority].bss_prio_lock, flags); | |
1034 | ||
2e237319 AF |
1035 | spin_lock_irqsave(&priv->wmm.ra_list_spinlock, flags); |
1036 | if (mwifiex_is_ralist_valid(priv, ra, tid)) { | |
1037 | priv->wmm.packets_out[tid]++; | |
b006ed54 | 1038 | /* same as above */ |
2e237319 AF |
1039 | list_move(&tid_ptr->ra_list, &ra->list); |
1040 | } | |
1041 | spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, flags); | |
1042 | } | |
1043 | ||
d85c5fe4 AK |
1044 | /* |
1045 | * This function checks if 11n aggregation is possible. | |
1046 | */ | |
1047 | static int | |
1048 | mwifiex_is_11n_aggragation_possible(struct mwifiex_private *priv, | |
1049 | struct mwifiex_ra_list_tbl *ptr, | |
1050 | int max_buf_size) | |
1051 | { | |
1052 | int count = 0, total_size = 0; | |
1053 | struct sk_buff *skb, *tmp; | |
5a009adf AP |
1054 | int max_amsdu_size; |
1055 | ||
1056 | if (priv->bss_role == MWIFIEX_BSS_ROLE_UAP && priv->ap_11n_enabled && | |
1057 | ptr->is_11n_enabled) | |
1058 | max_amsdu_size = min_t(int, ptr->max_amsdu, max_buf_size); | |
1059 | else | |
1060 | max_amsdu_size = max_buf_size; | |
d85c5fe4 AK |
1061 | |
1062 | skb_queue_walk_safe(&ptr->skb_head, skb, tmp) { | |
1063 | total_size += skb->len; | |
5a009adf | 1064 | if (total_size >= max_amsdu_size) |
d85c5fe4 AK |
1065 | break; |
1066 | if (++count >= MIN_NUM_AMSDU) | |
1067 | return true; | |
1068 | } | |
1069 | ||
1070 | return false; | |
1071 | } | |
1072 | ||
5e6e3a92 BZ |
1073 | /* |
1074 | * This function sends a single packet to firmware for transmission. | |
1075 | */ | |
1076 | static void | |
1077 | mwifiex_send_single_packet(struct mwifiex_private *priv, | |
1078 | struct mwifiex_ra_list_tbl *ptr, int ptr_index, | |
1079 | unsigned long ra_list_flags) | |
1080 | __releases(&priv->wmm.ra_list_spinlock) | |
1081 | { | |
1082 | struct sk_buff *skb, *skb_next; | |
1083 | struct mwifiex_tx_param tx_param; | |
1084 | struct mwifiex_adapter *adapter = priv->adapter; | |
5e6e3a92 BZ |
1085 | struct mwifiex_txinfo *tx_info; |
1086 | ||
1087 | if (skb_queue_empty(&ptr->skb_head)) { | |
1088 | spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, | |
1089 | ra_list_flags); | |
1090 | dev_dbg(adapter->dev, "data: nothing to send\n"); | |
1091 | return; | |
1092 | } | |
1093 | ||
1094 | skb = skb_dequeue(&ptr->skb_head); | |
1095 | ||
1096 | tx_info = MWIFIEX_SKB_TXCB(skb); | |
1097 | dev_dbg(adapter->dev, "data: dequeuing the packet %p %p\n", ptr, skb); | |
1098 | ||
c7d9ed9e | 1099 | ptr->total_pkt_count--; |
5e6e3a92 BZ |
1100 | |
1101 | if (!skb_queue_empty(&ptr->skb_head)) | |
1102 | skb_next = skb_peek(&ptr->skb_head); | |
1103 | else | |
1104 | skb_next = NULL; | |
1105 | ||
1106 | spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, ra_list_flags); | |
1107 | ||
1108 | tx_param.next_pkt_len = ((skb_next) ? skb_next->len + | |
1109 | sizeof(struct txpd) : 0); | |
1110 | ||
636c4598 | 1111 | if (mwifiex_process_tx(priv, skb, &tx_param) == -EBUSY) { |
5e6e3a92 BZ |
1112 | /* Queue the packet back at the head */ |
1113 | spin_lock_irqsave(&priv->wmm.ra_list_spinlock, ra_list_flags); | |
1114 | ||
1115 | if (!mwifiex_is_ralist_valid(priv, ptr, ptr_index)) { | |
1116 | spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, | |
1117 | ra_list_flags); | |
47411a06 | 1118 | mwifiex_write_data_complete(adapter, skb, 0, -1); |
5e6e3a92 BZ |
1119 | return; |
1120 | } | |
1121 | ||
1122 | skb_queue_tail(&ptr->skb_head, skb); | |
1123 | ||
c7d9ed9e | 1124 | ptr->total_pkt_count++; |
f0cb84f8 | 1125 | ptr->ba_pkt_count++; |
5e6e3a92 BZ |
1126 | tx_info->flags |= MWIFIEX_BUF_FLAG_REQUEUED_PKT; |
1127 | spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, | |
1128 | ra_list_flags); | |
1129 | } else { | |
2e237319 | 1130 | mwifiex_rotate_priolists(priv, ptr, ptr_index); |
f699254c | 1131 | atomic_dec(&priv->wmm.tx_pkts_queued); |
5e6e3a92 BZ |
1132 | } |
1133 | } | |
1134 | ||
1135 | /* | |
1136 | * This function checks if the first packet in the given RA list | |
1137 | * is already processed or not. | |
1138 | */ | |
1139 | static int | |
1140 | mwifiex_is_ptr_processed(struct mwifiex_private *priv, | |
1141 | struct mwifiex_ra_list_tbl *ptr) | |
1142 | { | |
1143 | struct sk_buff *skb; | |
1144 | struct mwifiex_txinfo *tx_info; | |
1145 | ||
1146 | if (skb_queue_empty(&ptr->skb_head)) | |
1147 | return false; | |
1148 | ||
1149 | skb = skb_peek(&ptr->skb_head); | |
1150 | ||
1151 | tx_info = MWIFIEX_SKB_TXCB(skb); | |
1152 | if (tx_info->flags & MWIFIEX_BUF_FLAG_REQUEUED_PKT) | |
1153 | return true; | |
1154 | ||
1155 | return false; | |
1156 | } | |
1157 | ||
1158 | /* | |
1159 | * This function sends a single processed packet to firmware for | |
1160 | * transmission. | |
1161 | */ | |
1162 | static void | |
1163 | mwifiex_send_processed_packet(struct mwifiex_private *priv, | |
1164 | struct mwifiex_ra_list_tbl *ptr, int ptr_index, | |
1165 | unsigned long ra_list_flags) | |
1166 | __releases(&priv->wmm.ra_list_spinlock) | |
1167 | { | |
1168 | struct mwifiex_tx_param tx_param; | |
1169 | struct mwifiex_adapter *adapter = priv->adapter; | |
1170 | int ret = -1; | |
1171 | struct sk_buff *skb, *skb_next; | |
1172 | struct mwifiex_txinfo *tx_info; | |
1173 | ||
1174 | if (skb_queue_empty(&ptr->skb_head)) { | |
1175 | spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, | |
1176 | ra_list_flags); | |
1177 | return; | |
1178 | } | |
1179 | ||
1180 | skb = skb_dequeue(&ptr->skb_head); | |
1181 | ||
1182 | if (!skb_queue_empty(&ptr->skb_head)) | |
1183 | skb_next = skb_peek(&ptr->skb_head); | |
1184 | else | |
1185 | skb_next = NULL; | |
1186 | ||
1187 | tx_info = MWIFIEX_SKB_TXCB(skb); | |
1188 | ||
1189 | spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, ra_list_flags); | |
4daffe35 AK |
1190 | |
1191 | if (adapter->iface_type == MWIFIEX_USB) { | |
1192 | adapter->data_sent = true; | |
1193 | ret = adapter->if_ops.host_to_card(adapter, MWIFIEX_USB_EP_DATA, | |
1194 | skb, NULL); | |
1195 | } else { | |
1196 | tx_param.next_pkt_len = | |
1197 | ((skb_next) ? skb_next->len + | |
1198 | sizeof(struct txpd) : 0); | |
1199 | ret = adapter->if_ops.host_to_card(adapter, MWIFIEX_TYPE_DATA, | |
1200 | skb, &tx_param); | |
1201 | } | |
1202 | ||
5e6e3a92 BZ |
1203 | switch (ret) { |
1204 | case -EBUSY: | |
1205 | dev_dbg(adapter->dev, "data: -EBUSY is returned\n"); | |
1206 | spin_lock_irqsave(&priv->wmm.ra_list_spinlock, ra_list_flags); | |
1207 | ||
1208 | if (!mwifiex_is_ralist_valid(priv, ptr, ptr_index)) { | |
1209 | spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, | |
1210 | ra_list_flags); | |
47411a06 | 1211 | mwifiex_write_data_complete(adapter, skb, 0, -1); |
5e6e3a92 BZ |
1212 | return; |
1213 | } | |
1214 | ||
1215 | skb_queue_tail(&ptr->skb_head, skb); | |
1216 | ||
1217 | tx_info->flags |= MWIFIEX_BUF_FLAG_REQUEUED_PKT; | |
1218 | spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, | |
1219 | ra_list_flags); | |
1220 | break; | |
1221 | case -1: | |
e7f767a7 AP |
1222 | if (adapter->iface_type != MWIFIEX_PCIE) |
1223 | adapter->data_sent = false; | |
5e6e3a92 BZ |
1224 | dev_err(adapter->dev, "host_to_card failed: %#x\n", ret); |
1225 | adapter->dbg.num_tx_host_to_card_failure++; | |
47411a06 | 1226 | mwifiex_write_data_complete(adapter, skb, 0, ret); |
5e6e3a92 BZ |
1227 | break; |
1228 | case -EINPROGRESS: | |
e7f767a7 AP |
1229 | if (adapter->iface_type != MWIFIEX_PCIE) |
1230 | adapter->data_sent = false; | |
7a1f4e61 AK |
1231 | break; |
1232 | case 0: | |
1233 | mwifiex_write_data_complete(adapter, skb, 0, ret); | |
5e6e3a92 BZ |
1234 | default: |
1235 | break; | |
1236 | } | |
1237 | if (ret != -EBUSY) { | |
2e237319 | 1238 | mwifiex_rotate_priolists(priv, ptr, ptr_index); |
f699254c | 1239 | atomic_dec(&priv->wmm.tx_pkts_queued); |
5e6e3a92 BZ |
1240 | } |
1241 | } | |
1242 | ||
1243 | /* | |
1244 | * This function dequeues a packet from the highest priority list | |
1245 | * and transmits it. | |
1246 | */ | |
1247 | static int | |
1248 | mwifiex_dequeue_tx_packet(struct mwifiex_adapter *adapter) | |
1249 | { | |
1250 | struct mwifiex_ra_list_tbl *ptr; | |
1251 | struct mwifiex_private *priv = NULL; | |
1252 | int ptr_index = 0; | |
1253 | u8 ra[ETH_ALEN]; | |
1254 | int tid_del = 0, tid = 0; | |
1255 | unsigned long flags; | |
1256 | ||
1257 | ptr = mwifiex_wmm_get_highest_priolist_ptr(adapter, &priv, &ptr_index); | |
1258 | if (!ptr) | |
1259 | return -1; | |
1260 | ||
572e8f3e | 1261 | tid = mwifiex_get_tid(ptr); |
5e6e3a92 BZ |
1262 | |
1263 | dev_dbg(adapter->dev, "data: tid=%d\n", tid); | |
1264 | ||
1265 | spin_lock_irqsave(&priv->wmm.ra_list_spinlock, flags); | |
1266 | if (!mwifiex_is_ralist_valid(priv, ptr, ptr_index)) { | |
1267 | spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, flags); | |
1268 | return -1; | |
1269 | } | |
1270 | ||
1271 | if (mwifiex_is_ptr_processed(priv, ptr)) { | |
1272 | mwifiex_send_processed_packet(priv, ptr, ptr_index, flags); | |
1273 | /* ra_list_spinlock has been freed in | |
1274 | mwifiex_send_processed_packet() */ | |
1275 | return 0; | |
1276 | } | |
1277 | ||
c65a30f3 YAP |
1278 | if (!ptr->is_11n_enabled || |
1279 | mwifiex_is_ba_stream_setup(priv, ptr, tid) || | |
4c9f9fb2 AK |
1280 | priv->wps.session_enable) { |
1281 | if (ptr->is_11n_enabled && | |
1282 | mwifiex_is_ba_stream_setup(priv, ptr, tid) && | |
1283 | mwifiex_is_amsdu_in_ampdu_allowed(priv, ptr, tid) && | |
1284 | mwifiex_is_amsdu_allowed(priv, tid) && | |
1285 | mwifiex_is_11n_aggragation_possible(priv, ptr, | |
1286 | adapter->tx_buf_size)) | |
1287 | mwifiex_11n_aggregate_pkt(priv, ptr, ptr_index, flags); | |
1288 | /* ra_list_spinlock has been freed in | |
1289 | * mwifiex_11n_aggregate_pkt() | |
1290 | */ | |
1291 | else | |
1292 | mwifiex_send_single_packet(priv, ptr, ptr_index, flags); | |
1293 | /* ra_list_spinlock has been freed in | |
1294 | * mwifiex_send_single_packet() | |
1295 | */ | |
5e6e3a92 | 1296 | } else { |
eac43227 | 1297 | if (mwifiex_is_ampdu_allowed(priv, ptr, tid) && |
f0cb84f8 | 1298 | ptr->ba_pkt_count > ptr->ba_packet_thr) { |
53d7938e | 1299 | if (mwifiex_space_avail_for_new_ba_stream(adapter)) { |
3e822635 YAP |
1300 | mwifiex_create_ba_tbl(priv, ptr->ra, tid, |
1301 | BA_SETUP_INPROGRESS); | |
5e6e3a92 BZ |
1302 | mwifiex_send_addba(priv, tid, ptr->ra); |
1303 | } else if (mwifiex_find_stream_to_delete | |
572e8f3e | 1304 | (priv, tid, &tid_del, ra)) { |
3e822635 YAP |
1305 | mwifiex_create_ba_tbl(priv, ptr->ra, tid, |
1306 | BA_SETUP_INPROGRESS); | |
5e6e3a92 BZ |
1307 | mwifiex_send_delba(priv, tid_del, ra, 1); |
1308 | } | |
1309 | } | |
4c9f9fb2 | 1310 | if (mwifiex_is_amsdu_allowed(priv, tid) && |
d85c5fe4 AK |
1311 | mwifiex_is_11n_aggragation_possible(priv, ptr, |
1312 | adapter->tx_buf_size)) | |
bd1c6142 | 1313 | mwifiex_11n_aggregate_pkt(priv, ptr, ptr_index, flags); |
5e6e3a92 BZ |
1314 | /* ra_list_spinlock has been freed in |
1315 | mwifiex_11n_aggregate_pkt() */ | |
1316 | else | |
1317 | mwifiex_send_single_packet(priv, ptr, ptr_index, flags); | |
1318 | /* ra_list_spinlock has been freed in | |
1319 | mwifiex_send_single_packet() */ | |
1320 | } | |
1321 | return 0; | |
1322 | } | |
1323 | ||
1324 | /* | |
1325 | * This function transmits the highest priority packet awaiting in the | |
1326 | * WMM Queues. | |
1327 | */ | |
1328 | void | |
1329 | mwifiex_wmm_process_tx(struct mwifiex_adapter *adapter) | |
1330 | { | |
1331 | do { | |
1332 | /* Check if busy */ | |
1333 | if (adapter->data_sent || adapter->tx_lock_flag) | |
1334 | break; | |
1335 | ||
1336 | if (mwifiex_dequeue_tx_packet(adapter)) | |
1337 | break; | |
93968147 | 1338 | } while (!mwifiex_wmm_lists_empty(adapter)); |
5e6e3a92 | 1339 | } |