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5e6e3a92 BZ |
1 | /* |
2 | * Marvell Wireless LAN device driver: WMM | |
3 | * | |
4 | * Copyright (C) 2011, Marvell International Ltd. | |
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 | ||
40 | /* WMM information IE */ | |
41 | static const u8 wmm_info_ie[] = { WLAN_EID_VENDOR_SPECIFIC, 0x07, | |
42 | 0x00, 0x50, 0xf2, 0x02, | |
43 | 0x00, 0x01, 0x00 | |
44 | }; | |
45 | ||
46 | static const u8 wmm_aci_to_qidx_map[] = { WMM_AC_BE, | |
47 | WMM_AC_BK, | |
48 | WMM_AC_VI, | |
49 | WMM_AC_VO | |
50 | }; | |
51 | ||
52 | static u8 tos_to_tid[] = { | |
53 | /* TID DSCP_P2 DSCP_P1 DSCP_P0 WMM_AC */ | |
54 | 0x01, /* 0 1 0 AC_BK */ | |
55 | 0x02, /* 0 0 0 AC_BK */ | |
56 | 0x00, /* 0 0 1 AC_BE */ | |
57 | 0x03, /* 0 1 1 AC_BE */ | |
58 | 0x04, /* 1 0 0 AC_VI */ | |
59 | 0x05, /* 1 0 1 AC_VI */ | |
60 | 0x06, /* 1 1 0 AC_VO */ | |
61 | 0x07 /* 1 1 1 AC_VO */ | |
62 | }; | |
63 | ||
64 | /* | |
65 | * This table inverses the tos_to_tid operation to get a priority | |
66 | * which is in sequential order, and can be compared. | |
67 | * Use this to compare the priority of two different TIDs. | |
68 | */ | |
69 | static u8 tos_to_tid_inv[] = { | |
70 | 0x02, /* from tos_to_tid[2] = 0 */ | |
71 | 0x00, /* from tos_to_tid[0] = 1 */ | |
72 | 0x01, /* from tos_to_tid[1] = 2 */ | |
73 | 0x03, | |
74 | 0x04, | |
75 | 0x05, | |
76 | 0x06, | |
77 | 0x07}; | |
78 | ||
79 | static u8 ac_to_tid[4][2] = { {1, 2}, {0, 3}, {4, 5}, {6, 7} }; | |
80 | ||
81 | /* | |
82 | * This function debug prints the priority parameters for a WMM AC. | |
83 | */ | |
84 | static void | |
85 | mwifiex_wmm_ac_debug_print(const struct ieee_types_wmm_ac_parameters *ac_param) | |
86 | { | |
87 | const char *ac_str[] = { "BK", "BE", "VI", "VO" }; | |
88 | ||
89 | pr_debug("info: WMM AC_%s: ACI=%d, ACM=%d, Aifsn=%d, " | |
90 | "EcwMin=%d, EcwMax=%d, TxopLimit=%d\n", | |
91 | ac_str[wmm_aci_to_qidx_map[(ac_param->aci_aifsn_bitmap | |
92 | & MWIFIEX_ACI) >> 5]], | |
93 | (ac_param->aci_aifsn_bitmap & MWIFIEX_ACI) >> 5, | |
94 | (ac_param->aci_aifsn_bitmap & MWIFIEX_ACM) >> 4, | |
95 | ac_param->aci_aifsn_bitmap & MWIFIEX_AIFSN, | |
96 | ac_param->ecw_bitmap & MWIFIEX_ECW_MIN, | |
97 | (ac_param->ecw_bitmap & MWIFIEX_ECW_MAX) >> 4, | |
98 | le16_to_cpu(ac_param->tx_op_limit)); | |
99 | } | |
100 | ||
101 | /* | |
102 | * This function allocates a route address list. | |
103 | * | |
104 | * The function also initializes the list with the provided RA. | |
105 | */ | |
106 | static struct mwifiex_ra_list_tbl * | |
107 | mwifiex_wmm_allocate_ralist_node(struct mwifiex_adapter *adapter, u8 *ra) | |
108 | { | |
109 | struct mwifiex_ra_list_tbl *ra_list; | |
110 | ||
111 | ra_list = kzalloc(sizeof(struct mwifiex_ra_list_tbl), GFP_ATOMIC); | |
112 | ||
113 | if (!ra_list) { | |
114 | dev_err(adapter->dev, "%s: failed to alloc ra_list\n", | |
115 | __func__); | |
116 | return NULL; | |
117 | } | |
118 | INIT_LIST_HEAD(&ra_list->list); | |
119 | skb_queue_head_init(&ra_list->skb_head); | |
120 | ||
121 | memcpy(ra_list->ra, ra, ETH_ALEN); | |
122 | ||
123 | ra_list->total_pkts_size = 0; | |
124 | ||
125 | dev_dbg(adapter->dev, "info: allocated ra_list %p\n", ra_list); | |
126 | ||
127 | return ra_list; | |
128 | } | |
129 | ||
130 | /* | |
131 | * This function allocates and adds a RA list for all TIDs | |
132 | * with the given RA. | |
133 | */ | |
134 | void | |
135 | mwifiex_ralist_add(struct mwifiex_private *priv, u8 *ra) | |
136 | { | |
137 | int i; | |
138 | struct mwifiex_ra_list_tbl *ra_list; | |
139 | struct mwifiex_adapter *adapter = priv->adapter; | |
140 | ||
141 | for (i = 0; i < MAX_NUM_TID; ++i) { | |
142 | ra_list = mwifiex_wmm_allocate_ralist_node(adapter, ra); | |
143 | dev_dbg(adapter->dev, "info: created ra_list %p\n", ra_list); | |
144 | ||
145 | if (!ra_list) | |
146 | break; | |
147 | ||
148 | if (!mwifiex_queuing_ra_based(priv)) | |
149 | ra_list->is_11n_enabled = IS_11N_ENABLED(priv); | |
150 | else | |
151 | ra_list->is_11n_enabled = false; | |
152 | ||
153 | dev_dbg(adapter->dev, "data: ralist %p: is_11n_enabled=%d\n", | |
154 | ra_list, ra_list->is_11n_enabled); | |
155 | ||
156 | list_add_tail(&ra_list->list, | |
157 | &priv->wmm.tid_tbl_ptr[i].ra_list); | |
158 | ||
159 | if (!priv->wmm.tid_tbl_ptr[i].ra_list_curr) | |
160 | priv->wmm.tid_tbl_ptr[i].ra_list_curr = ra_list; | |
161 | } | |
162 | } | |
163 | ||
164 | /* | |
165 | * This function sets the WMM queue priorities to their default values. | |
166 | */ | |
167 | static void mwifiex_wmm_default_queue_priorities(struct mwifiex_private *priv) | |
168 | { | |
169 | /* Default queue priorities: VO->VI->BE->BK */ | |
170 | priv->wmm.queue_priority[0] = WMM_AC_VO; | |
171 | priv->wmm.queue_priority[1] = WMM_AC_VI; | |
172 | priv->wmm.queue_priority[2] = WMM_AC_BE; | |
173 | priv->wmm.queue_priority[3] = WMM_AC_BK; | |
174 | } | |
175 | ||
176 | /* | |
177 | * This function map ACs to TIDs. | |
178 | */ | |
179 | static void | |
49729ff6 | 180 | mwifiex_wmm_queue_priorities_tid(struct mwifiex_wmm_desc *wmm) |
5e6e3a92 | 181 | { |
49729ff6 | 182 | u8 *queue_priority = wmm->queue_priority; |
5e6e3a92 BZ |
183 | int i; |
184 | ||
185 | for (i = 0; i < 4; ++i) { | |
186 | tos_to_tid[7 - (i * 2)] = ac_to_tid[queue_priority[i]][1]; | |
187 | tos_to_tid[6 - (i * 2)] = ac_to_tid[queue_priority[i]][0]; | |
188 | } | |
49729ff6 MY |
189 | |
190 | for (i = 0; i < MAX_NUM_TID; ++i) | |
191 | tos_to_tid_inv[tos_to_tid[i]] = (u8)i; | |
192 | ||
193 | atomic_set(&wmm->highest_queued_prio, HIGH_PRIO_TID); | |
5e6e3a92 BZ |
194 | } |
195 | ||
196 | /* | |
197 | * This function initializes WMM priority queues. | |
198 | */ | |
199 | void | |
200 | mwifiex_wmm_setup_queue_priorities(struct mwifiex_private *priv, | |
201 | struct ieee_types_wmm_parameter *wmm_ie) | |
202 | { | |
203 | u16 cw_min, avg_back_off, tmp[4]; | |
204 | u32 i, j, num_ac; | |
205 | u8 ac_idx; | |
206 | ||
207 | if (!wmm_ie || !priv->wmm_enabled) { | |
208 | /* WMM is not enabled, just set the defaults and return */ | |
209 | mwifiex_wmm_default_queue_priorities(priv); | |
210 | return; | |
211 | } | |
212 | ||
213 | dev_dbg(priv->adapter->dev, "info: WMM Parameter IE: version=%d, " | |
214 | "qos_info Parameter Set Count=%d, Reserved=%#x\n", | |
215 | wmm_ie->vend_hdr.version, wmm_ie->qos_info_bitmap & | |
216 | IEEE80211_WMM_IE_AP_QOSINFO_PARAM_SET_CNT_MASK, | |
217 | wmm_ie->reserved); | |
218 | ||
219 | for (num_ac = 0; num_ac < ARRAY_SIZE(wmm_ie->ac_params); num_ac++) { | |
220 | cw_min = (1 << (wmm_ie->ac_params[num_ac].ecw_bitmap & | |
221 | MWIFIEX_ECW_MIN)) - 1; | |
222 | avg_back_off = (cw_min >> 1) + | |
223 | (wmm_ie->ac_params[num_ac].aci_aifsn_bitmap & | |
224 | MWIFIEX_AIFSN); | |
225 | ||
226 | ac_idx = wmm_aci_to_qidx_map[(wmm_ie->ac_params[num_ac]. | |
227 | aci_aifsn_bitmap & | |
228 | MWIFIEX_ACI) >> 5]; | |
229 | priv->wmm.queue_priority[ac_idx] = ac_idx; | |
230 | tmp[ac_idx] = avg_back_off; | |
231 | ||
232 | dev_dbg(priv->adapter->dev, "info: WMM: CWmax=%d CWmin=%d Avg Back-off=%d\n", | |
233 | (1 << ((wmm_ie->ac_params[num_ac].ecw_bitmap & | |
234 | MWIFIEX_ECW_MAX) >> 4)) - 1, | |
235 | cw_min, avg_back_off); | |
236 | mwifiex_wmm_ac_debug_print(&wmm_ie->ac_params[num_ac]); | |
237 | } | |
238 | ||
239 | /* Bubble sort */ | |
240 | for (i = 0; i < num_ac; i++) { | |
241 | for (j = 1; j < num_ac - i; j++) { | |
242 | if (tmp[j - 1] > tmp[j]) { | |
243 | swap(tmp[j - 1], tmp[j]); | |
244 | swap(priv->wmm.queue_priority[j - 1], | |
245 | priv->wmm.queue_priority[j]); | |
246 | } else if (tmp[j - 1] == tmp[j]) { | |
247 | if (priv->wmm.queue_priority[j - 1] | |
248 | < priv->wmm.queue_priority[j]) | |
249 | swap(priv->wmm.queue_priority[j - 1], | |
250 | priv->wmm.queue_priority[j]); | |
251 | } | |
252 | } | |
253 | } | |
254 | ||
49729ff6 | 255 | mwifiex_wmm_queue_priorities_tid(&priv->wmm); |
5e6e3a92 BZ |
256 | } |
257 | ||
258 | /* | |
259 | * This function evaluates whether or not an AC is to be downgraded. | |
260 | * | |
261 | * In case the AC is not enabled, the highest AC is returned that is | |
262 | * enabled and does not require admission control. | |
263 | */ | |
264 | static enum mwifiex_wmm_ac_e | |
265 | mwifiex_wmm_eval_downgrade_ac(struct mwifiex_private *priv, | |
266 | enum mwifiex_wmm_ac_e eval_ac) | |
267 | { | |
268 | int down_ac; | |
269 | enum mwifiex_wmm_ac_e ret_ac; | |
270 | struct mwifiex_wmm_ac_status *ac_status; | |
271 | ||
272 | ac_status = &priv->wmm.ac_status[eval_ac]; | |
273 | ||
274 | if (!ac_status->disabled) | |
275 | /* Okay to use this AC, its enabled */ | |
276 | return eval_ac; | |
277 | ||
278 | /* Setup a default return value of the lowest priority */ | |
279 | ret_ac = WMM_AC_BK; | |
280 | ||
281 | /* | |
282 | * Find the highest AC that is enabled and does not require | |
283 | * admission control. The spec disallows downgrading to an AC, | |
284 | * which is enabled due to a completed admission control. | |
285 | * Unadmitted traffic is not to be sent on an AC with admitted | |
286 | * traffic. | |
287 | */ | |
288 | for (down_ac = WMM_AC_BK; down_ac < eval_ac; down_ac++) { | |
289 | ac_status = &priv->wmm.ac_status[down_ac]; | |
290 | ||
291 | if (!ac_status->disabled && !ac_status->flow_required) | |
292 | /* AC is enabled and does not require admission | |
293 | control */ | |
294 | ret_ac = (enum mwifiex_wmm_ac_e) down_ac; | |
295 | } | |
296 | ||
297 | return ret_ac; | |
298 | } | |
299 | ||
300 | /* | |
301 | * This function downgrades WMM priority queue. | |
302 | */ | |
303 | void | |
304 | mwifiex_wmm_setup_ac_downgrade(struct mwifiex_private *priv) | |
305 | { | |
306 | int ac_val; | |
307 | ||
308 | dev_dbg(priv->adapter->dev, "info: WMM: AC Priorities:" | |
309 | "BK(0), BE(1), VI(2), VO(3)\n"); | |
310 | ||
311 | if (!priv->wmm_enabled) { | |
312 | /* WMM is not enabled, default priorities */ | |
313 | for (ac_val = WMM_AC_BK; ac_val <= WMM_AC_VO; ac_val++) | |
314 | priv->wmm.ac_down_graded_vals[ac_val] = | |
315 | (enum mwifiex_wmm_ac_e) ac_val; | |
316 | } else { | |
317 | for (ac_val = WMM_AC_BK; ac_val <= WMM_AC_VO; ac_val++) { | |
318 | priv->wmm.ac_down_graded_vals[ac_val] | |
319 | = mwifiex_wmm_eval_downgrade_ac(priv, | |
320 | (enum mwifiex_wmm_ac_e) ac_val); | |
321 | dev_dbg(priv->adapter->dev, "info: WMM: AC PRIO %d maps to %d\n", | |
322 | ac_val, priv->wmm.ac_down_graded_vals[ac_val]); | |
323 | } | |
324 | } | |
325 | } | |
326 | ||
327 | /* | |
328 | * This function converts the IP TOS field to an WMM AC | |
329 | * Queue assignment. | |
330 | */ | |
331 | static enum mwifiex_wmm_ac_e | |
332 | mwifiex_wmm_convert_tos_to_ac(struct mwifiex_adapter *adapter, u32 tos) | |
333 | { | |
334 | /* Map of TOS UP values to WMM AC */ | |
335 | const enum mwifiex_wmm_ac_e tos_to_ac[] = { WMM_AC_BE, | |
336 | WMM_AC_BK, | |
337 | WMM_AC_BK, | |
338 | WMM_AC_BE, | |
339 | WMM_AC_VI, | |
340 | WMM_AC_VI, | |
341 | WMM_AC_VO, | |
342 | WMM_AC_VO | |
343 | }; | |
344 | ||
345 | if (tos >= ARRAY_SIZE(tos_to_ac)) | |
346 | return WMM_AC_BE; | |
347 | ||
348 | return tos_to_ac[tos]; | |
349 | } | |
350 | ||
351 | /* | |
352 | * This function evaluates a given TID and downgrades it to a lower | |
353 | * TID if the WMM Parameter IE received from the AP indicates that the | |
354 | * AP is disabled (due to call admission control (ACM bit). Mapping | |
355 | * of TID to AC is taken care of internally. | |
356 | */ | |
357 | static u8 | |
358 | mwifiex_wmm_downgrade_tid(struct mwifiex_private *priv, u32 tid) | |
359 | { | |
360 | enum mwifiex_wmm_ac_e ac, ac_down; | |
361 | u8 new_tid; | |
362 | ||
363 | ac = mwifiex_wmm_convert_tos_to_ac(priv->adapter, tid); | |
364 | ac_down = priv->wmm.ac_down_graded_vals[ac]; | |
365 | ||
366 | /* Send the index to tid array, picking from the array will be | |
367 | * taken care by dequeuing function | |
368 | */ | |
369 | new_tid = ac_to_tid[ac_down][tid % 2]; | |
370 | ||
371 | return new_tid; | |
372 | } | |
373 | ||
374 | /* | |
375 | * This function initializes the WMM state information and the | |
376 | * WMM data path queues. | |
377 | */ | |
378 | void | |
379 | mwifiex_wmm_init(struct mwifiex_adapter *adapter) | |
380 | { | |
381 | int i, j; | |
382 | struct mwifiex_private *priv; | |
383 | ||
384 | for (j = 0; j < adapter->priv_num; ++j) { | |
385 | priv = adapter->priv[j]; | |
386 | if (!priv) | |
387 | continue; | |
388 | ||
389 | for (i = 0; i < MAX_NUM_TID; ++i) { | |
390 | priv->aggr_prio_tbl[i].amsdu = tos_to_tid_inv[i]; | |
391 | priv->aggr_prio_tbl[i].ampdu_ap = tos_to_tid_inv[i]; | |
392 | priv->aggr_prio_tbl[i].ampdu_user = tos_to_tid_inv[i]; | |
393 | priv->wmm.tid_tbl_ptr[i].ra_list_curr = NULL; | |
394 | } | |
395 | ||
396 | priv->aggr_prio_tbl[6].amsdu | |
397 | = priv->aggr_prio_tbl[6].ampdu_ap | |
398 | = priv->aggr_prio_tbl[6].ampdu_user | |
399 | = BA_STREAM_NOT_ALLOWED; | |
400 | ||
401 | priv->aggr_prio_tbl[7].amsdu = priv->aggr_prio_tbl[7].ampdu_ap | |
402 | = priv->aggr_prio_tbl[7].ampdu_user | |
403 | = BA_STREAM_NOT_ALLOWED; | |
404 | ||
405 | priv->add_ba_param.timeout = MWIFIEX_DEFAULT_BLOCK_ACK_TIMEOUT; | |
406 | priv->add_ba_param.tx_win_size = MWIFIEX_AMPDU_DEF_TXWINSIZE; | |
407 | priv->add_ba_param.rx_win_size = MWIFIEX_AMPDU_DEF_RXWINSIZE; | |
f699254c MY |
408 | |
409 | atomic_set(&priv->wmm.tx_pkts_queued, 0); | |
49729ff6 | 410 | atomic_set(&priv->wmm.highest_queued_prio, HIGH_PRIO_TID); |
5e6e3a92 BZ |
411 | } |
412 | } | |
413 | ||
414 | /* | |
415 | * This function checks if WMM Tx queue is empty. | |
416 | */ | |
417 | int | |
418 | mwifiex_wmm_lists_empty(struct mwifiex_adapter *adapter) | |
419 | { | |
f699254c | 420 | int i; |
5e6e3a92 BZ |
421 | struct mwifiex_private *priv; |
422 | ||
f699254c MY |
423 | for (i = 0; i < adapter->priv_num; ++i) { |
424 | priv = adapter->priv[i]; | |
425 | if (priv && atomic_read(&priv->wmm.tx_pkts_queued)) | |
426 | return false; | |
5e6e3a92 BZ |
427 | } |
428 | ||
429 | return true; | |
430 | } | |
431 | ||
432 | /* | |
433 | * This function deletes all packets in an RA list node. | |
434 | * | |
435 | * The packet sent completion callback handler are called with | |
436 | * status failure, after they are dequeued to ensure proper | |
437 | * cleanup. The RA list node itself is freed at the end. | |
438 | */ | |
439 | static void | |
440 | mwifiex_wmm_del_pkts_in_ralist_node(struct mwifiex_private *priv, | |
441 | struct mwifiex_ra_list_tbl *ra_list) | |
442 | { | |
443 | struct mwifiex_adapter *adapter = priv->adapter; | |
444 | struct sk_buff *skb, *tmp; | |
445 | ||
446 | skb_queue_walk_safe(&ra_list->skb_head, skb, tmp) | |
447 | mwifiex_write_data_complete(adapter, skb, -1); | |
448 | } | |
449 | ||
450 | /* | |
451 | * This function deletes all packets in an RA list. | |
452 | * | |
453 | * Each nodes in the RA list are freed individually first, and then | |
454 | * the RA list itself is freed. | |
455 | */ | |
456 | static void | |
457 | mwifiex_wmm_del_pkts_in_ralist(struct mwifiex_private *priv, | |
458 | struct list_head *ra_list_head) | |
459 | { | |
460 | struct mwifiex_ra_list_tbl *ra_list; | |
461 | ||
462 | list_for_each_entry(ra_list, ra_list_head, list) | |
463 | mwifiex_wmm_del_pkts_in_ralist_node(priv, ra_list); | |
464 | } | |
465 | ||
466 | /* | |
467 | * This function deletes all packets in all RA lists. | |
468 | */ | |
469 | static void mwifiex_wmm_cleanup_queues(struct mwifiex_private *priv) | |
470 | { | |
471 | int i; | |
472 | ||
473 | for (i = 0; i < MAX_NUM_TID; i++) | |
474 | mwifiex_wmm_del_pkts_in_ralist(priv, &priv->wmm.tid_tbl_ptr[i]. | |
475 | ra_list); | |
f699254c MY |
476 | |
477 | atomic_set(&priv->wmm.tx_pkts_queued, 0); | |
49729ff6 | 478 | atomic_set(&priv->wmm.highest_queued_prio, HIGH_PRIO_TID); |
5e6e3a92 BZ |
479 | } |
480 | ||
481 | /* | |
482 | * This function deletes all route addresses from all RA lists. | |
483 | */ | |
484 | static void mwifiex_wmm_delete_all_ralist(struct mwifiex_private *priv) | |
485 | { | |
486 | struct mwifiex_ra_list_tbl *ra_list, *tmp_node; | |
487 | int i; | |
488 | ||
489 | for (i = 0; i < MAX_NUM_TID; ++i) { | |
490 | dev_dbg(priv->adapter->dev, | |
491 | "info: ra_list: freeing buf for tid %d\n", i); | |
492 | list_for_each_entry_safe(ra_list, tmp_node, | |
493 | &priv->wmm.tid_tbl_ptr[i].ra_list, list) { | |
494 | list_del(&ra_list->list); | |
495 | kfree(ra_list); | |
496 | } | |
497 | ||
498 | INIT_LIST_HEAD(&priv->wmm.tid_tbl_ptr[i].ra_list); | |
499 | ||
500 | priv->wmm.tid_tbl_ptr[i].ra_list_curr = NULL; | |
501 | } | |
502 | } | |
503 | ||
504 | /* | |
505 | * This function cleans up the Tx and Rx queues. | |
506 | * | |
507 | * Cleanup includes - | |
508 | * - All packets in RA lists | |
509 | * - All entries in Rx reorder table | |
510 | * - All entries in Tx BA stream table | |
511 | * - MPA buffer (if required) | |
512 | * - All RA lists | |
513 | */ | |
514 | void | |
515 | mwifiex_clean_txrx(struct mwifiex_private *priv) | |
516 | { | |
517 | unsigned long flags; | |
518 | ||
519 | mwifiex_11n_cleanup_reorder_tbl(priv); | |
520 | spin_lock_irqsave(&priv->wmm.ra_list_spinlock, flags); | |
521 | ||
522 | mwifiex_wmm_cleanup_queues(priv); | |
523 | mwifiex_11n_delete_all_tx_ba_stream_tbl(priv); | |
524 | ||
525 | if (priv->adapter->if_ops.cleanup_mpa_buf) | |
526 | priv->adapter->if_ops.cleanup_mpa_buf(priv->adapter); | |
527 | ||
528 | mwifiex_wmm_delete_all_ralist(priv); | |
529 | memcpy(tos_to_tid, ac_to_tid, sizeof(tos_to_tid)); | |
530 | ||
531 | spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, flags); | |
532 | } | |
533 | ||
534 | /* | |
535 | * This function retrieves a particular RA list node, matching with the | |
536 | * given TID and RA address. | |
537 | */ | |
538 | static struct mwifiex_ra_list_tbl * | |
539 | mwifiex_wmm_get_ralist_node(struct mwifiex_private *priv, u8 tid, | |
540 | u8 *ra_addr) | |
541 | { | |
542 | struct mwifiex_ra_list_tbl *ra_list; | |
543 | ||
544 | list_for_each_entry(ra_list, &priv->wmm.tid_tbl_ptr[tid].ra_list, | |
545 | list) { | |
546 | if (!memcmp(ra_list->ra, ra_addr, ETH_ALEN)) | |
547 | return ra_list; | |
548 | } | |
549 | ||
550 | return NULL; | |
551 | } | |
552 | ||
553 | /* | |
554 | * This function retrieves an RA list node for a given TID and | |
555 | * RA address pair. | |
556 | * | |
557 | * If no such node is found, a new node is added first and then | |
558 | * retrieved. | |
559 | */ | |
560 | static struct mwifiex_ra_list_tbl * | |
561 | mwifiex_wmm_get_queue_raptr(struct mwifiex_private *priv, u8 tid, u8 *ra_addr) | |
562 | { | |
563 | struct mwifiex_ra_list_tbl *ra_list; | |
564 | ||
565 | ra_list = mwifiex_wmm_get_ralist_node(priv, tid, ra_addr); | |
566 | if (ra_list) | |
567 | return ra_list; | |
568 | mwifiex_ralist_add(priv, ra_addr); | |
569 | ||
570 | return mwifiex_wmm_get_ralist_node(priv, tid, ra_addr); | |
571 | } | |
572 | ||
573 | /* | |
574 | * This function checks if a particular RA list node exists in a given TID | |
575 | * table index. | |
576 | */ | |
577 | int | |
578 | mwifiex_is_ralist_valid(struct mwifiex_private *priv, | |
579 | struct mwifiex_ra_list_tbl *ra_list, int ptr_index) | |
580 | { | |
581 | struct mwifiex_ra_list_tbl *rlist; | |
582 | ||
583 | list_for_each_entry(rlist, &priv->wmm.tid_tbl_ptr[ptr_index].ra_list, | |
584 | list) { | |
585 | if (rlist == ra_list) | |
586 | return true; | |
587 | } | |
588 | ||
589 | return false; | |
590 | } | |
591 | ||
592 | /* | |
593 | * This function adds a packet to WMM queue. | |
594 | * | |
595 | * In disconnected state the packet is immediately dropped and the | |
596 | * packet send completion callback is called with status failure. | |
597 | * | |
598 | * Otherwise, the correct RA list node is located and the packet | |
599 | * is queued at the list tail. | |
600 | */ | |
601 | void | |
2690e1bb | 602 | mwifiex_wmm_add_buf_txqueue(struct mwifiex_private *priv, |
5e6e3a92 BZ |
603 | struct sk_buff *skb) |
604 | { | |
2690e1bb | 605 | struct mwifiex_adapter *adapter = priv->adapter; |
5e6e3a92 BZ |
606 | u32 tid; |
607 | struct mwifiex_ra_list_tbl *ra_list; | |
608 | u8 ra[ETH_ALEN], tid_down; | |
609 | unsigned long flags; | |
610 | ||
611 | if (!priv->media_connected) { | |
612 | dev_dbg(adapter->dev, "data: drop packet in disconnect\n"); | |
613 | mwifiex_write_data_complete(adapter, skb, -1); | |
614 | return; | |
615 | } | |
616 | ||
617 | tid = skb->priority; | |
618 | ||
619 | spin_lock_irqsave(&priv->wmm.ra_list_spinlock, flags); | |
620 | ||
621 | tid_down = mwifiex_wmm_downgrade_tid(priv, tid); | |
622 | ||
623 | /* In case of infra as we have already created the list during | |
624 | association we just don't have to call get_queue_raptr, we will | |
625 | have only 1 raptr for a tid in case of infra */ | |
626 | if (!mwifiex_queuing_ra_based(priv)) { | |
627 | if (!list_empty(&priv->wmm.tid_tbl_ptr[tid_down].ra_list)) | |
628 | ra_list = list_first_entry( | |
629 | &priv->wmm.tid_tbl_ptr[tid_down].ra_list, | |
630 | struct mwifiex_ra_list_tbl, list); | |
631 | else | |
632 | ra_list = NULL; | |
633 | } else { | |
634 | memcpy(ra, skb->data, ETH_ALEN); | |
4e3c4420 AK |
635 | if (ra[0] & 0x01) |
636 | memset(ra, 0xff, ETH_ALEN); | |
5e6e3a92 BZ |
637 | ra_list = mwifiex_wmm_get_queue_raptr(priv, tid_down, ra); |
638 | } | |
639 | ||
640 | if (!ra_list) { | |
641 | spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, flags); | |
642 | mwifiex_write_data_complete(adapter, skb, -1); | |
643 | return; | |
644 | } | |
645 | ||
646 | skb_queue_tail(&ra_list->skb_head, skb); | |
647 | ||
648 | ra_list->total_pkts_size += skb->len; | |
649 | ||
f699254c MY |
650 | atomic_inc(&priv->wmm.tx_pkts_queued); |
651 | ||
49729ff6 MY |
652 | if (atomic_read(&priv->wmm.highest_queued_prio) < |
653 | tos_to_tid_inv[tid_down]) | |
654 | atomic_set(&priv->wmm.highest_queued_prio, | |
655 | tos_to_tid_inv[tid_down]); | |
656 | ||
5e6e3a92 BZ |
657 | spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, flags); |
658 | } | |
659 | ||
660 | /* | |
661 | * This function processes the get WMM status command response from firmware. | |
662 | * | |
663 | * The response may contain multiple TLVs - | |
664 | * - AC Queue status TLVs | |
665 | * - Current WMM Parameter IE TLV | |
666 | * - Admission Control action frame TLVs | |
667 | * | |
668 | * This function parses the TLVs and then calls further specific functions | |
669 | * to process any changes in the queue prioritize or state. | |
670 | */ | |
671 | int mwifiex_ret_wmm_get_status(struct mwifiex_private *priv, | |
672 | const struct host_cmd_ds_command *resp) | |
673 | { | |
674 | u8 *curr = (u8 *) &resp->params.get_wmm_status; | |
675 | uint16_t resp_len = le16_to_cpu(resp->size), tlv_len; | |
676 | int valid = true; | |
677 | ||
678 | struct mwifiex_ie_types_data *tlv_hdr; | |
679 | struct mwifiex_ie_types_wmm_queue_status *tlv_wmm_qstatus; | |
680 | struct ieee_types_wmm_parameter *wmm_param_ie = NULL; | |
681 | struct mwifiex_wmm_ac_status *ac_status; | |
682 | ||
683 | dev_dbg(priv->adapter->dev, "info: WMM: WMM_GET_STATUS cmdresp received: %d\n", | |
684 | resp_len); | |
685 | ||
686 | while ((resp_len >= sizeof(tlv_hdr->header)) && valid) { | |
687 | tlv_hdr = (struct mwifiex_ie_types_data *) curr; | |
688 | tlv_len = le16_to_cpu(tlv_hdr->header.len); | |
689 | ||
690 | switch (le16_to_cpu(tlv_hdr->header.type)) { | |
691 | case TLV_TYPE_WMMQSTATUS: | |
692 | tlv_wmm_qstatus = | |
693 | (struct mwifiex_ie_types_wmm_queue_status *) | |
694 | tlv_hdr; | |
695 | dev_dbg(priv->adapter->dev, | |
696 | "info: CMD_RESP: WMM_GET_STATUS:" | |
697 | " QSTATUS TLV: %d, %d, %d\n", | |
698 | tlv_wmm_qstatus->queue_index, | |
699 | tlv_wmm_qstatus->flow_required, | |
700 | tlv_wmm_qstatus->disabled); | |
701 | ||
702 | ac_status = &priv->wmm.ac_status[tlv_wmm_qstatus-> | |
703 | queue_index]; | |
704 | ac_status->disabled = tlv_wmm_qstatus->disabled; | |
705 | ac_status->flow_required = | |
706 | tlv_wmm_qstatus->flow_required; | |
707 | ac_status->flow_created = tlv_wmm_qstatus->flow_created; | |
708 | break; | |
709 | ||
710 | case WLAN_EID_VENDOR_SPECIFIC: | |
711 | /* | |
712 | * Point the regular IEEE IE 2 bytes into the Marvell IE | |
713 | * and setup the IEEE IE type and length byte fields | |
714 | */ | |
715 | ||
716 | wmm_param_ie = | |
717 | (struct ieee_types_wmm_parameter *) (curr + | |
718 | 2); | |
719 | wmm_param_ie->vend_hdr.len = (u8) tlv_len; | |
720 | wmm_param_ie->vend_hdr.element_id = | |
721 | WLAN_EID_VENDOR_SPECIFIC; | |
722 | ||
723 | dev_dbg(priv->adapter->dev, | |
724 | "info: CMD_RESP: WMM_GET_STATUS:" | |
725 | " WMM Parameter Set Count: %d\n", | |
726 | wmm_param_ie->qos_info_bitmap & | |
727 | IEEE80211_WMM_IE_AP_QOSINFO_PARAM_SET_CNT_MASK); | |
728 | ||
729 | memcpy((u8 *) &priv->curr_bss_params.bss_descriptor. | |
730 | wmm_ie, wmm_param_ie, | |
731 | wmm_param_ie->vend_hdr.len + 2); | |
732 | ||
733 | break; | |
734 | ||
735 | default: | |
736 | valid = false; | |
737 | break; | |
738 | } | |
739 | ||
740 | curr += (tlv_len + sizeof(tlv_hdr->header)); | |
741 | resp_len -= (tlv_len + sizeof(tlv_hdr->header)); | |
742 | } | |
743 | ||
744 | mwifiex_wmm_setup_queue_priorities(priv, wmm_param_ie); | |
745 | mwifiex_wmm_setup_ac_downgrade(priv); | |
746 | ||
747 | return 0; | |
748 | } | |
749 | ||
750 | /* | |
751 | * Callback handler from the command module to allow insertion of a WMM TLV. | |
752 | * | |
753 | * If the BSS we are associating to supports WMM, this function adds the | |
754 | * required WMM Information IE to the association request command buffer in | |
755 | * the form of a Marvell extended IEEE IE. | |
756 | */ | |
757 | u32 | |
758 | mwifiex_wmm_process_association_req(struct mwifiex_private *priv, | |
759 | u8 **assoc_buf, | |
760 | struct ieee_types_wmm_parameter *wmm_ie, | |
761 | struct ieee80211_ht_cap *ht_cap) | |
762 | { | |
763 | struct mwifiex_ie_types_wmm_param_set *wmm_tlv; | |
764 | u32 ret_len = 0; | |
765 | ||
766 | /* Null checks */ | |
767 | if (!assoc_buf) | |
768 | return 0; | |
769 | if (!(*assoc_buf)) | |
770 | return 0; | |
771 | ||
772 | if (!wmm_ie) | |
773 | return 0; | |
774 | ||
775 | dev_dbg(priv->adapter->dev, "info: WMM: process assoc req:" | |
776 | "bss->wmmIe=0x%x\n", | |
777 | wmm_ie->vend_hdr.element_id); | |
778 | ||
779 | if ((priv->wmm_required | |
780 | || (ht_cap && (priv->adapter->config_bands & BAND_GN | |
781 | || priv->adapter->config_bands & BAND_AN)) | |
782 | ) | |
783 | && wmm_ie->vend_hdr.element_id == WLAN_EID_VENDOR_SPECIFIC) { | |
784 | wmm_tlv = (struct mwifiex_ie_types_wmm_param_set *) *assoc_buf; | |
785 | wmm_tlv->header.type = cpu_to_le16((u16) wmm_info_ie[0]); | |
786 | wmm_tlv->header.len = cpu_to_le16((u16) wmm_info_ie[1]); | |
787 | memcpy(wmm_tlv->wmm_ie, &wmm_info_ie[2], | |
788 | le16_to_cpu(wmm_tlv->header.len)); | |
789 | if (wmm_ie->qos_info_bitmap & IEEE80211_WMM_IE_AP_QOSINFO_UAPSD) | |
790 | memcpy((u8 *) (wmm_tlv->wmm_ie | |
791 | + le16_to_cpu(wmm_tlv->header.len) | |
792 | - sizeof(priv->wmm_qosinfo)), | |
793 | &priv->wmm_qosinfo, | |
794 | sizeof(priv->wmm_qosinfo)); | |
795 | ||
796 | ret_len = sizeof(wmm_tlv->header) | |
797 | + le16_to_cpu(wmm_tlv->header.len); | |
798 | ||
799 | *assoc_buf += ret_len; | |
800 | } | |
801 | ||
802 | return ret_len; | |
803 | } | |
804 | ||
805 | /* | |
806 | * This function computes the time delay in the driver queues for a | |
807 | * given packet. | |
808 | * | |
809 | * When the packet is received at the OS/Driver interface, the current | |
810 | * time is set in the packet structure. The difference between the present | |
811 | * time and that received time is computed in this function and limited | |
812 | * based on pre-compiled limits in the driver. | |
813 | */ | |
814 | u8 | |
815 | mwifiex_wmm_compute_drv_pkt_delay(struct mwifiex_private *priv, | |
816 | const struct sk_buff *skb) | |
817 | { | |
270e58e8 | 818 | u8 ret_val; |
5e6e3a92 BZ |
819 | struct timeval out_tstamp, in_tstamp; |
820 | u32 queue_delay; | |
821 | ||
822 | do_gettimeofday(&out_tstamp); | |
823 | in_tstamp = ktime_to_timeval(skb->tstamp); | |
824 | ||
825 | queue_delay = (out_tstamp.tv_sec - in_tstamp.tv_sec) * 1000; | |
826 | queue_delay += (out_tstamp.tv_usec - in_tstamp.tv_usec) / 1000; | |
827 | ||
828 | /* | |
829 | * Queue delay is passed as a uint8 in units of 2ms (ms shifted | |
830 | * by 1). Min value (other than 0) is therefore 2ms, max is 510ms. | |
831 | * | |
832 | * Pass max value if queue_delay is beyond the uint8 range | |
833 | */ | |
834 | ret_val = (u8) (min(queue_delay, priv->wmm.drv_pkt_delay_max) >> 1); | |
835 | ||
836 | dev_dbg(priv->adapter->dev, "data: WMM: Pkt Delay: %d ms," | |
837 | " %d ms sent to FW\n", queue_delay, ret_val); | |
838 | ||
839 | return ret_val; | |
840 | } | |
841 | ||
842 | /* | |
843 | * This function retrieves the highest priority RA list table pointer. | |
844 | */ | |
845 | static struct mwifiex_ra_list_tbl * | |
846 | mwifiex_wmm_get_highest_priolist_ptr(struct mwifiex_adapter *adapter, | |
847 | struct mwifiex_private **priv, int *tid) | |
848 | { | |
849 | struct mwifiex_private *priv_tmp; | |
850 | struct mwifiex_ra_list_tbl *ptr, *head; | |
851 | struct mwifiex_bss_prio_node *bssprio_node, *bssprio_head; | |
852 | struct mwifiex_tid_tbl *tid_ptr; | |
853 | int is_list_empty; | |
854 | unsigned long flags; | |
855 | int i, j; | |
856 | ||
857 | for (j = adapter->priv_num - 1; j >= 0; --j) { | |
858 | spin_lock_irqsave(&adapter->bss_prio_tbl[j].bss_prio_lock, | |
859 | flags); | |
860 | is_list_empty = list_empty(&adapter->bss_prio_tbl[j] | |
861 | .bss_prio_head); | |
862 | spin_unlock_irqrestore(&adapter->bss_prio_tbl[j].bss_prio_lock, | |
863 | flags); | |
864 | if (is_list_empty) | |
865 | continue; | |
866 | ||
867 | if (adapter->bss_prio_tbl[j].bss_prio_cur == | |
868 | (struct mwifiex_bss_prio_node *) | |
869 | &adapter->bss_prio_tbl[j].bss_prio_head) { | |
870 | bssprio_node = | |
871 | list_first_entry(&adapter->bss_prio_tbl[j] | |
872 | .bss_prio_head, | |
873 | struct mwifiex_bss_prio_node, | |
874 | list); | |
875 | bssprio_head = bssprio_node; | |
876 | } else { | |
877 | bssprio_node = adapter->bss_prio_tbl[j].bss_prio_cur; | |
878 | bssprio_head = bssprio_node; | |
879 | } | |
880 | ||
881 | do { | |
49729ff6 MY |
882 | atomic_t *hqp; |
883 | spinlock_t *lock; | |
884 | ||
5e6e3a92 | 885 | priv_tmp = bssprio_node->priv; |
49729ff6 MY |
886 | hqp = &priv_tmp->wmm.highest_queued_prio; |
887 | lock = &priv_tmp->wmm.ra_list_spinlock; | |
5e6e3a92 | 888 | |
49729ff6 | 889 | for (i = atomic_read(hqp); i >= LOW_PRIO_TID; --i) { |
5e6e3a92 BZ |
890 | |
891 | tid_ptr = &(priv_tmp)->wmm. | |
892 | tid_tbl_ptr[tos_to_tid[i]]; | |
893 | ||
894 | spin_lock_irqsave(&tid_ptr->tid_tbl_lock, | |
895 | flags); | |
896 | is_list_empty = | |
897 | list_empty(&adapter->bss_prio_tbl[j] | |
898 | .bss_prio_head); | |
899 | spin_unlock_irqrestore(&tid_ptr->tid_tbl_lock, | |
900 | flags); | |
901 | if (is_list_empty) | |
902 | continue; | |
903 | ||
904 | /* | |
905 | * Always choose the next ra we transmitted | |
906 | * last time, this way we pick the ra's in | |
907 | * round robin fashion. | |
908 | */ | |
909 | ptr = list_first_entry( | |
910 | &tid_ptr->ra_list_curr->list, | |
911 | struct mwifiex_ra_list_tbl, | |
912 | list); | |
913 | ||
914 | head = ptr; | |
915 | if (ptr == (struct mwifiex_ra_list_tbl *) | |
916 | &tid_ptr->ra_list) { | |
917 | /* Get next ra */ | |
918 | ptr = list_first_entry(&ptr->list, | |
919 | struct mwifiex_ra_list_tbl, list); | |
920 | head = ptr; | |
921 | } | |
922 | ||
923 | do { | |
924 | is_list_empty = | |
925 | skb_queue_empty(&ptr->skb_head); | |
926 | if (!is_list_empty) { | |
49729ff6 MY |
927 | spin_lock_irqsave(lock, flags); |
928 | if (atomic_read(hqp) > i) | |
929 | atomic_set(hqp, i); | |
930 | spin_unlock_irqrestore(lock, | |
931 | flags); | |
5e6e3a92 BZ |
932 | *priv = priv_tmp; |
933 | *tid = tos_to_tid[i]; | |
934 | return ptr; | |
935 | } | |
936 | /* Get next ra */ | |
937 | ptr = list_first_entry(&ptr->list, | |
938 | struct mwifiex_ra_list_tbl, | |
939 | list); | |
940 | if (ptr == | |
941 | (struct mwifiex_ra_list_tbl *) | |
942 | &tid_ptr->ra_list) | |
943 | ptr = list_first_entry( | |
944 | &ptr->list, | |
945 | struct mwifiex_ra_list_tbl, | |
946 | list); | |
947 | } while (ptr != head); | |
948 | } | |
949 | ||
17e8cec8 MY |
950 | /* No packet at any TID for this priv. Mark as such |
951 | * to skip checking TIDs for this priv (until pkt is | |
952 | * added). | |
953 | */ | |
954 | atomic_set(hqp, NO_PKT_PRIO_TID); | |
955 | ||
5e6e3a92 BZ |
956 | /* Get next bss priority node */ |
957 | bssprio_node = list_first_entry(&bssprio_node->list, | |
958 | struct mwifiex_bss_prio_node, | |
959 | list); | |
960 | ||
961 | if (bssprio_node == | |
962 | (struct mwifiex_bss_prio_node *) | |
963 | &adapter->bss_prio_tbl[j].bss_prio_head) | |
964 | /* Get next bss priority node */ | |
965 | bssprio_node = list_first_entry( | |
966 | &bssprio_node->list, | |
967 | struct mwifiex_bss_prio_node, | |
968 | list); | |
969 | } while (bssprio_node != bssprio_head); | |
970 | } | |
971 | return NULL; | |
972 | } | |
973 | ||
d85c5fe4 AK |
974 | /* |
975 | * This function checks if 11n aggregation is possible. | |
976 | */ | |
977 | static int | |
978 | mwifiex_is_11n_aggragation_possible(struct mwifiex_private *priv, | |
979 | struct mwifiex_ra_list_tbl *ptr, | |
980 | int max_buf_size) | |
981 | { | |
982 | int count = 0, total_size = 0; | |
983 | struct sk_buff *skb, *tmp; | |
984 | ||
985 | skb_queue_walk_safe(&ptr->skb_head, skb, tmp) { | |
986 | total_size += skb->len; | |
987 | if (total_size >= max_buf_size) | |
988 | break; | |
989 | if (++count >= MIN_NUM_AMSDU) | |
990 | return true; | |
991 | } | |
992 | ||
993 | return false; | |
994 | } | |
995 | ||
5e6e3a92 BZ |
996 | /* |
997 | * This function sends a single packet to firmware for transmission. | |
998 | */ | |
999 | static void | |
1000 | mwifiex_send_single_packet(struct mwifiex_private *priv, | |
1001 | struct mwifiex_ra_list_tbl *ptr, int ptr_index, | |
1002 | unsigned long ra_list_flags) | |
1003 | __releases(&priv->wmm.ra_list_spinlock) | |
1004 | { | |
1005 | struct sk_buff *skb, *skb_next; | |
1006 | struct mwifiex_tx_param tx_param; | |
1007 | struct mwifiex_adapter *adapter = priv->adapter; | |
5e6e3a92 BZ |
1008 | struct mwifiex_txinfo *tx_info; |
1009 | ||
1010 | if (skb_queue_empty(&ptr->skb_head)) { | |
1011 | spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, | |
1012 | ra_list_flags); | |
1013 | dev_dbg(adapter->dev, "data: nothing to send\n"); | |
1014 | return; | |
1015 | } | |
1016 | ||
1017 | skb = skb_dequeue(&ptr->skb_head); | |
1018 | ||
1019 | tx_info = MWIFIEX_SKB_TXCB(skb); | |
1020 | dev_dbg(adapter->dev, "data: dequeuing the packet %p %p\n", ptr, skb); | |
1021 | ||
1022 | ptr->total_pkts_size -= skb->len; | |
1023 | ||
1024 | if (!skb_queue_empty(&ptr->skb_head)) | |
1025 | skb_next = skb_peek(&ptr->skb_head); | |
1026 | else | |
1027 | skb_next = NULL; | |
1028 | ||
1029 | spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, ra_list_flags); | |
1030 | ||
1031 | tx_param.next_pkt_len = ((skb_next) ? skb_next->len + | |
1032 | sizeof(struct txpd) : 0); | |
1033 | ||
636c4598 | 1034 | if (mwifiex_process_tx(priv, skb, &tx_param) == -EBUSY) { |
5e6e3a92 BZ |
1035 | /* Queue the packet back at the head */ |
1036 | spin_lock_irqsave(&priv->wmm.ra_list_spinlock, ra_list_flags); | |
1037 | ||
1038 | if (!mwifiex_is_ralist_valid(priv, ptr, ptr_index)) { | |
1039 | spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, | |
1040 | ra_list_flags); | |
1041 | mwifiex_write_data_complete(adapter, skb, -1); | |
1042 | return; | |
1043 | } | |
1044 | ||
1045 | skb_queue_tail(&ptr->skb_head, skb); | |
1046 | ||
1047 | ptr->total_pkts_size += skb->len; | |
1048 | tx_info->flags |= MWIFIEX_BUF_FLAG_REQUEUED_PKT; | |
1049 | spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, | |
1050 | ra_list_flags); | |
1051 | } else { | |
1052 | spin_lock_irqsave(&priv->wmm.ra_list_spinlock, ra_list_flags); | |
1053 | if (mwifiex_is_ralist_valid(priv, ptr, ptr_index)) { | |
1054 | priv->wmm.packets_out[ptr_index]++; | |
1055 | priv->wmm.tid_tbl_ptr[ptr_index].ra_list_curr = ptr; | |
1056 | } | |
1057 | adapter->bss_prio_tbl[priv->bss_priority].bss_prio_cur = | |
1058 | list_first_entry( | |
1059 | &adapter->bss_prio_tbl[priv->bss_priority] | |
1060 | .bss_prio_cur->list, | |
1061 | struct mwifiex_bss_prio_node, | |
1062 | list); | |
f699254c | 1063 | atomic_dec(&priv->wmm.tx_pkts_queued); |
5e6e3a92 BZ |
1064 | spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, |
1065 | ra_list_flags); | |
1066 | } | |
1067 | } | |
1068 | ||
1069 | /* | |
1070 | * This function checks if the first packet in the given RA list | |
1071 | * is already processed or not. | |
1072 | */ | |
1073 | static int | |
1074 | mwifiex_is_ptr_processed(struct mwifiex_private *priv, | |
1075 | struct mwifiex_ra_list_tbl *ptr) | |
1076 | { | |
1077 | struct sk_buff *skb; | |
1078 | struct mwifiex_txinfo *tx_info; | |
1079 | ||
1080 | if (skb_queue_empty(&ptr->skb_head)) | |
1081 | return false; | |
1082 | ||
1083 | skb = skb_peek(&ptr->skb_head); | |
1084 | ||
1085 | tx_info = MWIFIEX_SKB_TXCB(skb); | |
1086 | if (tx_info->flags & MWIFIEX_BUF_FLAG_REQUEUED_PKT) | |
1087 | return true; | |
1088 | ||
1089 | return false; | |
1090 | } | |
1091 | ||
1092 | /* | |
1093 | * This function sends a single processed packet to firmware for | |
1094 | * transmission. | |
1095 | */ | |
1096 | static void | |
1097 | mwifiex_send_processed_packet(struct mwifiex_private *priv, | |
1098 | struct mwifiex_ra_list_tbl *ptr, int ptr_index, | |
1099 | unsigned long ra_list_flags) | |
1100 | __releases(&priv->wmm.ra_list_spinlock) | |
1101 | { | |
1102 | struct mwifiex_tx_param tx_param; | |
1103 | struct mwifiex_adapter *adapter = priv->adapter; | |
1104 | int ret = -1; | |
1105 | struct sk_buff *skb, *skb_next; | |
1106 | struct mwifiex_txinfo *tx_info; | |
1107 | ||
1108 | if (skb_queue_empty(&ptr->skb_head)) { | |
1109 | spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, | |
1110 | ra_list_flags); | |
1111 | return; | |
1112 | } | |
1113 | ||
1114 | skb = skb_dequeue(&ptr->skb_head); | |
1115 | ||
1116 | if (!skb_queue_empty(&ptr->skb_head)) | |
1117 | skb_next = skb_peek(&ptr->skb_head); | |
1118 | else | |
1119 | skb_next = NULL; | |
1120 | ||
1121 | tx_info = MWIFIEX_SKB_TXCB(skb); | |
1122 | ||
1123 | spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, ra_list_flags); | |
1124 | tx_param.next_pkt_len = | |
1125 | ((skb_next) ? skb_next->len + | |
1126 | sizeof(struct txpd) : 0); | |
d930faee AK |
1127 | ret = adapter->if_ops.host_to_card(adapter, MWIFIEX_TYPE_DATA, skb, |
1128 | &tx_param); | |
5e6e3a92 BZ |
1129 | switch (ret) { |
1130 | case -EBUSY: | |
1131 | dev_dbg(adapter->dev, "data: -EBUSY is returned\n"); | |
1132 | spin_lock_irqsave(&priv->wmm.ra_list_spinlock, ra_list_flags); | |
1133 | ||
1134 | if (!mwifiex_is_ralist_valid(priv, ptr, ptr_index)) { | |
1135 | spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, | |
1136 | ra_list_flags); | |
1137 | mwifiex_write_data_complete(adapter, skb, -1); | |
1138 | return; | |
1139 | } | |
1140 | ||
1141 | skb_queue_tail(&ptr->skb_head, skb); | |
1142 | ||
1143 | tx_info->flags |= MWIFIEX_BUF_FLAG_REQUEUED_PKT; | |
1144 | spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, | |
1145 | ra_list_flags); | |
1146 | break; | |
1147 | case -1: | |
1148 | adapter->data_sent = false; | |
1149 | dev_err(adapter->dev, "host_to_card failed: %#x\n", ret); | |
1150 | adapter->dbg.num_tx_host_to_card_failure++; | |
1151 | mwifiex_write_data_complete(adapter, skb, ret); | |
1152 | break; | |
1153 | case -EINPROGRESS: | |
1154 | adapter->data_sent = false; | |
1155 | default: | |
1156 | break; | |
1157 | } | |
1158 | if (ret != -EBUSY) { | |
1159 | spin_lock_irqsave(&priv->wmm.ra_list_spinlock, ra_list_flags); | |
1160 | if (mwifiex_is_ralist_valid(priv, ptr, ptr_index)) { | |
1161 | priv->wmm.packets_out[ptr_index]++; | |
1162 | priv->wmm.tid_tbl_ptr[ptr_index].ra_list_curr = ptr; | |
1163 | } | |
1164 | adapter->bss_prio_tbl[priv->bss_priority].bss_prio_cur = | |
1165 | list_first_entry( | |
1166 | &adapter->bss_prio_tbl[priv->bss_priority] | |
1167 | .bss_prio_cur->list, | |
1168 | struct mwifiex_bss_prio_node, | |
1169 | list); | |
f699254c | 1170 | atomic_dec(&priv->wmm.tx_pkts_queued); |
5e6e3a92 BZ |
1171 | spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, |
1172 | ra_list_flags); | |
1173 | } | |
1174 | } | |
1175 | ||
1176 | /* | |
1177 | * This function dequeues a packet from the highest priority list | |
1178 | * and transmits it. | |
1179 | */ | |
1180 | static int | |
1181 | mwifiex_dequeue_tx_packet(struct mwifiex_adapter *adapter) | |
1182 | { | |
1183 | struct mwifiex_ra_list_tbl *ptr; | |
1184 | struct mwifiex_private *priv = NULL; | |
1185 | int ptr_index = 0; | |
1186 | u8 ra[ETH_ALEN]; | |
1187 | int tid_del = 0, tid = 0; | |
1188 | unsigned long flags; | |
1189 | ||
1190 | ptr = mwifiex_wmm_get_highest_priolist_ptr(adapter, &priv, &ptr_index); | |
1191 | if (!ptr) | |
1192 | return -1; | |
1193 | ||
572e8f3e | 1194 | tid = mwifiex_get_tid(ptr); |
5e6e3a92 BZ |
1195 | |
1196 | dev_dbg(adapter->dev, "data: tid=%d\n", tid); | |
1197 | ||
1198 | spin_lock_irqsave(&priv->wmm.ra_list_spinlock, flags); | |
1199 | if (!mwifiex_is_ralist_valid(priv, ptr, ptr_index)) { | |
1200 | spin_unlock_irqrestore(&priv->wmm.ra_list_spinlock, flags); | |
1201 | return -1; | |
1202 | } | |
1203 | ||
1204 | if (mwifiex_is_ptr_processed(priv, ptr)) { | |
1205 | mwifiex_send_processed_packet(priv, ptr, ptr_index, flags); | |
1206 | /* ra_list_spinlock has been freed in | |
1207 | mwifiex_send_processed_packet() */ | |
1208 | return 0; | |
1209 | } | |
1210 | ||
1211 | if (!ptr->is_11n_enabled || mwifiex_is_ba_stream_setup(priv, ptr, tid) | |
1212 | || ((priv->sec_info.wpa_enabled | |
1213 | || priv->sec_info.wpa2_enabled) && !priv->wpa_is_gtk_set) | |
1214 | ) { | |
1215 | mwifiex_send_single_packet(priv, ptr, ptr_index, flags); | |
1216 | /* ra_list_spinlock has been freed in | |
1217 | mwifiex_send_single_packet() */ | |
1218 | } else { | |
572e8f3e | 1219 | if (mwifiex_is_ampdu_allowed(priv, tid)) { |
53d7938e | 1220 | if (mwifiex_space_avail_for_new_ba_stream(adapter)) { |
3e822635 YAP |
1221 | mwifiex_create_ba_tbl(priv, ptr->ra, tid, |
1222 | BA_SETUP_INPROGRESS); | |
5e6e3a92 BZ |
1223 | mwifiex_send_addba(priv, tid, ptr->ra); |
1224 | } else if (mwifiex_find_stream_to_delete | |
572e8f3e | 1225 | (priv, tid, &tid_del, ra)) { |
3e822635 YAP |
1226 | mwifiex_create_ba_tbl(priv, ptr->ra, tid, |
1227 | BA_SETUP_INPROGRESS); | |
5e6e3a92 BZ |
1228 | mwifiex_send_delba(priv, tid_del, ra, 1); |
1229 | } | |
1230 | } | |
572e8f3e | 1231 | if (mwifiex_is_amsdu_allowed(priv, tid) && |
d85c5fe4 AK |
1232 | mwifiex_is_11n_aggragation_possible(priv, ptr, |
1233 | adapter->tx_buf_size)) | |
5e6e3a92 BZ |
1234 | mwifiex_11n_aggregate_pkt(priv, ptr, INTF_HEADER_LEN, |
1235 | ptr_index, flags); | |
1236 | /* ra_list_spinlock has been freed in | |
1237 | mwifiex_11n_aggregate_pkt() */ | |
1238 | else | |
1239 | mwifiex_send_single_packet(priv, ptr, ptr_index, flags); | |
1240 | /* ra_list_spinlock has been freed in | |
1241 | mwifiex_send_single_packet() */ | |
1242 | } | |
1243 | return 0; | |
1244 | } | |
1245 | ||
1246 | /* | |
1247 | * This function transmits the highest priority packet awaiting in the | |
1248 | * WMM Queues. | |
1249 | */ | |
1250 | void | |
1251 | mwifiex_wmm_process_tx(struct mwifiex_adapter *adapter) | |
1252 | { | |
1253 | do { | |
1254 | /* Check if busy */ | |
1255 | if (adapter->data_sent || adapter->tx_lock_flag) | |
1256 | break; | |
1257 | ||
1258 | if (mwifiex_dequeue_tx_packet(adapter)) | |
1259 | break; | |
93968147 | 1260 | } while (!mwifiex_wmm_lists_empty(adapter)); |
5e6e3a92 | 1261 | } |