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mac80211: stop toggling IEEE80211_HT_CAP_SUP_WIDTH_20_40
[deliverable/linux.git] / drivers / net / wireless / rtlwifi / base.c
1 /******************************************************************************
2 *
3 * Copyright(c) 2009-2012 Realtek Corporation.
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of version 2 of the GNU General Public License as
7 * published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
12 * more details.
13 *
14 * You should have received a copy of the GNU General Public License along with
15 * this program; if not, write to the Free Software Foundation, Inc.,
16 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
17 *
18 * The full GNU General Public License is included in this distribution in the
19 * file called LICENSE.
20 *
21 * Contact Information:
22 * wlanfae <wlanfae@realtek.com>
23 * Realtek Corporation, No. 2, Innovation Road II, Hsinchu Science Park,
24 * Hsinchu 300, Taiwan.
25 *
26 * Larry Finger <Larry.Finger@lwfinger.net>
27 *
28 *****************************************************************************/
29
30 #include "wifi.h"
31 #include "rc.h"
32 #include "base.h"
33 #include "efuse.h"
34 #include "cam.h"
35 #include "ps.h"
36 #include "regd.h"
37
38 #include <linux/ip.h>
39 #include <linux/module.h>
40
41 /*
42 *NOTICE!!!: This file will be very big, we should
43 *keep it clear under following roles:
44 *
45 *This file include following parts, so, if you add new
46 *functions into this file, please check which part it
47 *should includes. or check if you should add new part
48 *for this file:
49 *
50 *1) mac80211 init functions
51 *2) tx information functions
52 *3) functions called by core.c
53 *4) wq & timer callback functions
54 *5) frame process functions
55 *6) IOT functions
56 *7) sysfs functions
57 *8) ...
58 */
59
60 /*********************************************************
61 *
62 * mac80211 init functions
63 *
64 *********************************************************/
65 static struct ieee80211_channel rtl_channeltable_2g[] = {
66 {.center_freq = 2412, .hw_value = 1,},
67 {.center_freq = 2417, .hw_value = 2,},
68 {.center_freq = 2422, .hw_value = 3,},
69 {.center_freq = 2427, .hw_value = 4,},
70 {.center_freq = 2432, .hw_value = 5,},
71 {.center_freq = 2437, .hw_value = 6,},
72 {.center_freq = 2442, .hw_value = 7,},
73 {.center_freq = 2447, .hw_value = 8,},
74 {.center_freq = 2452, .hw_value = 9,},
75 {.center_freq = 2457, .hw_value = 10,},
76 {.center_freq = 2462, .hw_value = 11,},
77 {.center_freq = 2467, .hw_value = 12,},
78 {.center_freq = 2472, .hw_value = 13,},
79 {.center_freq = 2484, .hw_value = 14,},
80 };
81
82 static struct ieee80211_channel rtl_channeltable_5g[] = {
83 {.center_freq = 5180, .hw_value = 36,},
84 {.center_freq = 5200, .hw_value = 40,},
85 {.center_freq = 5220, .hw_value = 44,},
86 {.center_freq = 5240, .hw_value = 48,},
87 {.center_freq = 5260, .hw_value = 52,},
88 {.center_freq = 5280, .hw_value = 56,},
89 {.center_freq = 5300, .hw_value = 60,},
90 {.center_freq = 5320, .hw_value = 64,},
91 {.center_freq = 5500, .hw_value = 100,},
92 {.center_freq = 5520, .hw_value = 104,},
93 {.center_freq = 5540, .hw_value = 108,},
94 {.center_freq = 5560, .hw_value = 112,},
95 {.center_freq = 5580, .hw_value = 116,},
96 {.center_freq = 5600, .hw_value = 120,},
97 {.center_freq = 5620, .hw_value = 124,},
98 {.center_freq = 5640, .hw_value = 128,},
99 {.center_freq = 5660, .hw_value = 132,},
100 {.center_freq = 5680, .hw_value = 136,},
101 {.center_freq = 5700, .hw_value = 140,},
102 {.center_freq = 5745, .hw_value = 149,},
103 {.center_freq = 5765, .hw_value = 153,},
104 {.center_freq = 5785, .hw_value = 157,},
105 {.center_freq = 5805, .hw_value = 161,},
106 {.center_freq = 5825, .hw_value = 165,},
107 };
108
109 static struct ieee80211_rate rtl_ratetable_2g[] = {
110 {.bitrate = 10, .hw_value = 0x00,},
111 {.bitrate = 20, .hw_value = 0x01,},
112 {.bitrate = 55, .hw_value = 0x02,},
113 {.bitrate = 110, .hw_value = 0x03,},
114 {.bitrate = 60, .hw_value = 0x04,},
115 {.bitrate = 90, .hw_value = 0x05,},
116 {.bitrate = 120, .hw_value = 0x06,},
117 {.bitrate = 180, .hw_value = 0x07,},
118 {.bitrate = 240, .hw_value = 0x08,},
119 {.bitrate = 360, .hw_value = 0x09,},
120 {.bitrate = 480, .hw_value = 0x0a,},
121 {.bitrate = 540, .hw_value = 0x0b,},
122 };
123
124 static struct ieee80211_rate rtl_ratetable_5g[] = {
125 {.bitrate = 60, .hw_value = 0x04,},
126 {.bitrate = 90, .hw_value = 0x05,},
127 {.bitrate = 120, .hw_value = 0x06,},
128 {.bitrate = 180, .hw_value = 0x07,},
129 {.bitrate = 240, .hw_value = 0x08,},
130 {.bitrate = 360, .hw_value = 0x09,},
131 {.bitrate = 480, .hw_value = 0x0a,},
132 {.bitrate = 540, .hw_value = 0x0b,},
133 };
134
135 static const struct ieee80211_supported_band rtl_band_2ghz = {
136 .band = IEEE80211_BAND_2GHZ,
137
138 .channels = rtl_channeltable_2g,
139 .n_channels = ARRAY_SIZE(rtl_channeltable_2g),
140
141 .bitrates = rtl_ratetable_2g,
142 .n_bitrates = ARRAY_SIZE(rtl_ratetable_2g),
143
144 .ht_cap = {0},
145 };
146
147 static struct ieee80211_supported_band rtl_band_5ghz = {
148 .band = IEEE80211_BAND_5GHZ,
149
150 .channels = rtl_channeltable_5g,
151 .n_channels = ARRAY_SIZE(rtl_channeltable_5g),
152
153 .bitrates = rtl_ratetable_5g,
154 .n_bitrates = ARRAY_SIZE(rtl_ratetable_5g),
155
156 .ht_cap = {0},
157 };
158
159 static const u8 tid_to_ac[] = {
160 2, /* IEEE80211_AC_BE */
161 3, /* IEEE80211_AC_BK */
162 3, /* IEEE80211_AC_BK */
163 2, /* IEEE80211_AC_BE */
164 1, /* IEEE80211_AC_VI */
165 1, /* IEEE80211_AC_VI */
166 0, /* IEEE80211_AC_VO */
167 0, /* IEEE80211_AC_VO */
168 };
169
170 u8 rtl_tid_to_ac(u8 tid)
171 {
172 return tid_to_ac[tid];
173 }
174
175 static void _rtl_init_hw_ht_capab(struct ieee80211_hw *hw,
176 struct ieee80211_sta_ht_cap *ht_cap)
177 {
178 struct rtl_priv *rtlpriv = rtl_priv(hw);
179 struct rtl_phy *rtlphy = &(rtlpriv->phy);
180
181 ht_cap->ht_supported = true;
182 ht_cap->cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
183 IEEE80211_HT_CAP_SGI_40 |
184 IEEE80211_HT_CAP_SGI_20 |
185 IEEE80211_HT_CAP_DSSSCCK40 | IEEE80211_HT_CAP_MAX_AMSDU;
186
187 if (rtlpriv->rtlhal.disable_amsdu_8k)
188 ht_cap->cap &= ~IEEE80211_HT_CAP_MAX_AMSDU;
189
190 /*
191 *Maximum length of AMPDU that the STA can receive.
192 *Length = 2 ^ (13 + max_ampdu_length_exp) - 1 (octets)
193 */
194 ht_cap->ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
195
196 /*Minimum MPDU start spacing , */
197 ht_cap->ampdu_density = IEEE80211_HT_MPDU_DENSITY_16;
198
199 ht_cap->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
200
201 /*
202 *hw->wiphy->bands[IEEE80211_BAND_2GHZ]
203 *base on ant_num
204 *rx_mask: RX mask
205 *if rx_ant =1 rx_mask[0]=0xff;==>MCS0-MCS7
206 *if rx_ant =2 rx_mask[1]=0xff;==>MCS8-MCS15
207 *if rx_ant >=3 rx_mask[2]=0xff;
208 *if BW_40 rx_mask[4]=0x01;
209 *highest supported RX rate
210 */
211 if (get_rf_type(rtlphy) == RF_1T2R || get_rf_type(rtlphy) == RF_2T2R) {
212
213 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG, "1T2R or 2T2R\n");
214
215 ht_cap->mcs.rx_mask[0] = 0xFF;
216 ht_cap->mcs.rx_mask[1] = 0xFF;
217 ht_cap->mcs.rx_mask[4] = 0x01;
218
219 ht_cap->mcs.rx_highest = cpu_to_le16(MAX_BIT_RATE_40MHZ_MCS15);
220 } else if (get_rf_type(rtlphy) == RF_1T1R) {
221
222 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG, "1T1R\n");
223
224 ht_cap->mcs.rx_mask[0] = 0xFF;
225 ht_cap->mcs.rx_mask[1] = 0x00;
226 ht_cap->mcs.rx_mask[4] = 0x01;
227
228 ht_cap->mcs.rx_highest = cpu_to_le16(MAX_BIT_RATE_40MHZ_MCS7);
229 }
230 }
231
232 static void _rtl_init_mac80211(struct ieee80211_hw *hw)
233 {
234 struct rtl_priv *rtlpriv = rtl_priv(hw);
235 struct rtl_hal *rtlhal = rtl_hal(rtlpriv);
236 struct rtl_mac *rtlmac = rtl_mac(rtl_priv(hw));
237 struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw));
238 struct ieee80211_supported_band *sband;
239
240
241 if (rtlhal->macphymode == SINGLEMAC_SINGLEPHY && rtlhal->bandset ==
242 BAND_ON_BOTH) {
243 /* 1: 2.4 G bands */
244 /* <1> use mac->bands as mem for hw->wiphy->bands */
245 sband = &(rtlmac->bands[IEEE80211_BAND_2GHZ]);
246
247 /* <2> set hw->wiphy->bands[IEEE80211_BAND_2GHZ]
248 * to default value(1T1R) */
249 memcpy(&(rtlmac->bands[IEEE80211_BAND_2GHZ]), &rtl_band_2ghz,
250 sizeof(struct ieee80211_supported_band));
251
252 /* <3> init ht cap base on ant_num */
253 _rtl_init_hw_ht_capab(hw, &sband->ht_cap);
254
255 /* <4> set mac->sband to wiphy->sband */
256 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = sband;
257
258 /* 2: 5 G bands */
259 /* <1> use mac->bands as mem for hw->wiphy->bands */
260 sband = &(rtlmac->bands[IEEE80211_BAND_5GHZ]);
261
262 /* <2> set hw->wiphy->bands[IEEE80211_BAND_5GHZ]
263 * to default value(1T1R) */
264 memcpy(&(rtlmac->bands[IEEE80211_BAND_5GHZ]), &rtl_band_5ghz,
265 sizeof(struct ieee80211_supported_band));
266
267 /* <3> init ht cap base on ant_num */
268 _rtl_init_hw_ht_capab(hw, &sband->ht_cap);
269
270 /* <4> set mac->sband to wiphy->sband */
271 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = sband;
272 } else {
273 if (rtlhal->current_bandtype == BAND_ON_2_4G) {
274 /* <1> use mac->bands as mem for hw->wiphy->bands */
275 sband = &(rtlmac->bands[IEEE80211_BAND_2GHZ]);
276
277 /* <2> set hw->wiphy->bands[IEEE80211_BAND_2GHZ]
278 * to default value(1T1R) */
279 memcpy(&(rtlmac->bands[IEEE80211_BAND_2GHZ]),
280 &rtl_band_2ghz,
281 sizeof(struct ieee80211_supported_band));
282
283 /* <3> init ht cap base on ant_num */
284 _rtl_init_hw_ht_capab(hw, &sband->ht_cap);
285
286 /* <4> set mac->sband to wiphy->sband */
287 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = sband;
288 } else if (rtlhal->current_bandtype == BAND_ON_5G) {
289 /* <1> use mac->bands as mem for hw->wiphy->bands */
290 sband = &(rtlmac->bands[IEEE80211_BAND_5GHZ]);
291
292 /* <2> set hw->wiphy->bands[IEEE80211_BAND_5GHZ]
293 * to default value(1T1R) */
294 memcpy(&(rtlmac->bands[IEEE80211_BAND_5GHZ]),
295 &rtl_band_5ghz,
296 sizeof(struct ieee80211_supported_band));
297
298 /* <3> init ht cap base on ant_num */
299 _rtl_init_hw_ht_capab(hw, &sband->ht_cap);
300
301 /* <4> set mac->sband to wiphy->sband */
302 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = sband;
303 } else {
304 RT_TRACE(rtlpriv, COMP_INIT, DBG_EMERG, "Err BAND %d\n",
305 rtlhal->current_bandtype);
306 }
307 }
308 /* <5> set hw caps */
309 hw->flags = IEEE80211_HW_SIGNAL_DBM |
310 IEEE80211_HW_RX_INCLUDES_FCS |
311 IEEE80211_HW_AMPDU_AGGREGATION |
312 IEEE80211_HW_CONNECTION_MONITOR |
313 /* IEEE80211_HW_SUPPORTS_CQM_RSSI | */
314 IEEE80211_HW_REPORTS_TX_ACK_STATUS | 0;
315
316 /* swlps or hwlps has been set in diff chip in init_sw_vars */
317 if (rtlpriv->psc.swctrl_lps)
318 hw->flags |= IEEE80211_HW_SUPPORTS_PS |
319 IEEE80211_HW_PS_NULLFUNC_STACK |
320 /* IEEE80211_HW_SUPPORTS_DYNAMIC_PS | */
321 0;
322
323 hw->wiphy->interface_modes =
324 BIT(NL80211_IFTYPE_AP) |
325 BIT(NL80211_IFTYPE_STATION) |
326 BIT(NL80211_IFTYPE_ADHOC);
327
328 hw->wiphy->rts_threshold = 2347;
329
330 hw->queues = AC_MAX;
331 hw->extra_tx_headroom = RTL_TX_HEADER_SIZE;
332
333 /* TODO: Correct this value for our hw */
334 /* TODO: define these hard code value */
335 hw->channel_change_time = 100;
336 hw->max_listen_interval = 10;
337 hw->max_rate_tries = 4;
338 /* hw->max_rates = 1; */
339 hw->sta_data_size = sizeof(struct rtl_sta_info);
340
341 /* <6> mac address */
342 if (is_valid_ether_addr(rtlefuse->dev_addr)) {
343 SET_IEEE80211_PERM_ADDR(hw, rtlefuse->dev_addr);
344 } else {
345 u8 rtlmac1[] = { 0x00, 0xe0, 0x4c, 0x81, 0x92, 0x00 };
346 get_random_bytes((rtlmac1 + (ETH_ALEN - 1)), 1);
347 SET_IEEE80211_PERM_ADDR(hw, rtlmac1);
348 }
349
350 }
351
352 static void _rtl_init_deferred_work(struct ieee80211_hw *hw)
353 {
354 struct rtl_priv *rtlpriv = rtl_priv(hw);
355
356 /* <1> timer */
357 init_timer(&rtlpriv->works.watchdog_timer);
358 setup_timer(&rtlpriv->works.watchdog_timer,
359 rtl_watch_dog_timer_callback, (unsigned long)hw);
360
361 /* <2> work queue */
362 rtlpriv->works.hw = hw;
363 rtlpriv->works.rtl_wq = alloc_workqueue(rtlpriv->cfg->name, 0, 0);
364 INIT_DELAYED_WORK(&rtlpriv->works.watchdog_wq,
365 (void *)rtl_watchdog_wq_callback);
366 INIT_DELAYED_WORK(&rtlpriv->works.ips_nic_off_wq,
367 (void *)rtl_ips_nic_off_wq_callback);
368 INIT_DELAYED_WORK(&rtlpriv->works.ps_work,
369 (void *)rtl_swlps_wq_callback);
370 INIT_DELAYED_WORK(&rtlpriv->works.ps_rfon_wq,
371 (void *)rtl_swlps_rfon_wq_callback);
372
373 }
374
375 void rtl_deinit_deferred_work(struct ieee80211_hw *hw)
376 {
377 struct rtl_priv *rtlpriv = rtl_priv(hw);
378
379 del_timer_sync(&rtlpriv->works.watchdog_timer);
380
381 cancel_delayed_work(&rtlpriv->works.watchdog_wq);
382 cancel_delayed_work(&rtlpriv->works.ips_nic_off_wq);
383 cancel_delayed_work(&rtlpriv->works.ps_work);
384 cancel_delayed_work(&rtlpriv->works.ps_rfon_wq);
385 }
386
387 void rtl_init_rfkill(struct ieee80211_hw *hw)
388 {
389 struct rtl_priv *rtlpriv = rtl_priv(hw);
390
391 bool radio_state;
392 bool blocked;
393 u8 valid = 0;
394
395 /*set init state to on */
396 rtlpriv->rfkill.rfkill_state = true;
397 wiphy_rfkill_set_hw_state(hw->wiphy, 0);
398
399 radio_state = rtlpriv->cfg->ops->radio_onoff_checking(hw, &valid);
400
401 if (valid) {
402 pr_info("wireless switch is %s\n",
403 rtlpriv->rfkill.rfkill_state ? "on" : "off");
404
405 rtlpriv->rfkill.rfkill_state = radio_state;
406
407 blocked = (rtlpriv->rfkill.rfkill_state == 1) ? 0 : 1;
408 wiphy_rfkill_set_hw_state(hw->wiphy, blocked);
409 }
410
411 wiphy_rfkill_start_polling(hw->wiphy);
412 }
413 EXPORT_SYMBOL(rtl_init_rfkill);
414
415 void rtl_deinit_rfkill(struct ieee80211_hw *hw)
416 {
417 wiphy_rfkill_stop_polling(hw->wiphy);
418 }
419
420 int rtl_init_core(struct ieee80211_hw *hw)
421 {
422 struct rtl_priv *rtlpriv = rtl_priv(hw);
423 struct rtl_mac *rtlmac = rtl_mac(rtl_priv(hw));
424
425 /* <1> init mac80211 */
426 _rtl_init_mac80211(hw);
427 rtlmac->hw = hw;
428
429 /* <2> rate control register */
430 hw->rate_control_algorithm = "rtl_rc";
431
432 /*
433 * <3> init CRDA must come after init
434 * mac80211 hw in _rtl_init_mac80211.
435 */
436 if (rtl_regd_init(hw, rtl_reg_notifier)) {
437 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, "REGD init failed\n");
438 return 1;
439 } else {
440 /* CRDA regd hint must after init CRDA */
441 if (regulatory_hint(hw->wiphy, rtlpriv->regd.alpha2)) {
442 RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING,
443 "regulatory_hint fail\n");
444 }
445 }
446
447 /* <4> locks */
448 mutex_init(&rtlpriv->locks.conf_mutex);
449 mutex_init(&rtlpriv->locks.ps_mutex);
450 spin_lock_init(&rtlpriv->locks.ips_lock);
451 spin_lock_init(&rtlpriv->locks.irq_th_lock);
452 spin_lock_init(&rtlpriv->locks.h2c_lock);
453 spin_lock_init(&rtlpriv->locks.rf_ps_lock);
454 spin_lock_init(&rtlpriv->locks.rf_lock);
455 spin_lock_init(&rtlpriv->locks.waitq_lock);
456 spin_lock_init(&rtlpriv->locks.cck_and_rw_pagea_lock);
457
458 rtlmac->link_state = MAC80211_NOLINK;
459
460 /* <5> init deferred work */
461 _rtl_init_deferred_work(hw);
462
463 return 0;
464 }
465
466 void rtl_deinit_core(struct ieee80211_hw *hw)
467 {
468 }
469
470 void rtl_init_rx_config(struct ieee80211_hw *hw)
471 {
472 struct rtl_priv *rtlpriv = rtl_priv(hw);
473 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
474
475 rtlpriv->cfg->ops->get_hw_reg(hw, HW_VAR_RCR, (u8 *) (&mac->rx_conf));
476 }
477
478 /*********************************************************
479 *
480 * tx information functions
481 *
482 *********************************************************/
483 static void _rtl_qurey_shortpreamble_mode(struct ieee80211_hw *hw,
484 struct rtl_tcb_desc *tcb_desc,
485 struct ieee80211_tx_info *info)
486 {
487 struct rtl_priv *rtlpriv = rtl_priv(hw);
488 u8 rate_flag = info->control.rates[0].flags;
489
490 tcb_desc->use_shortpreamble = false;
491
492 /* 1M can only use Long Preamble. 11B spec */
493 if (tcb_desc->hw_rate == rtlpriv->cfg->maps[RTL_RC_CCK_RATE1M])
494 return;
495 else if (rate_flag & IEEE80211_TX_RC_USE_SHORT_PREAMBLE)
496 tcb_desc->use_shortpreamble = true;
497
498 return;
499 }
500
501 static void _rtl_query_shortgi(struct ieee80211_hw *hw,
502 struct ieee80211_sta *sta,
503 struct rtl_tcb_desc *tcb_desc,
504 struct ieee80211_tx_info *info)
505 {
506 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
507 u8 rate_flag = info->control.rates[0].flags;
508 u8 sgi_40 = 0, sgi_20 = 0, bw_40 = 0;
509 tcb_desc->use_shortgi = false;
510
511 if (sta == NULL)
512 return;
513
514 sgi_40 = sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_40;
515 sgi_20 = sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_20;
516
517 if (!(sta->ht_cap.ht_supported))
518 return;
519
520 if (!sgi_40 && !sgi_20)
521 return;
522
523 if (mac->opmode == NL80211_IFTYPE_STATION)
524 bw_40 = mac->bw_40;
525 else if (mac->opmode == NL80211_IFTYPE_AP ||
526 mac->opmode == NL80211_IFTYPE_ADHOC)
527 bw_40 = sta->bandwidth >= IEEE80211_STA_RX_BW_40;
528
529 if (bw_40 && sgi_40)
530 tcb_desc->use_shortgi = true;
531 else if ((bw_40 == false) && sgi_20)
532 tcb_desc->use_shortgi = true;
533
534 if (!(rate_flag & IEEE80211_TX_RC_SHORT_GI))
535 tcb_desc->use_shortgi = false;
536 }
537
538 static void _rtl_query_protection_mode(struct ieee80211_hw *hw,
539 struct rtl_tcb_desc *tcb_desc,
540 struct ieee80211_tx_info *info)
541 {
542 struct rtl_priv *rtlpriv = rtl_priv(hw);
543 u8 rate_flag = info->control.rates[0].flags;
544
545 /* Common Settings */
546 tcb_desc->rts_stbc = false;
547 tcb_desc->cts_enable = false;
548 tcb_desc->rts_sc = 0;
549 tcb_desc->rts_bw = false;
550 tcb_desc->rts_use_shortpreamble = false;
551 tcb_desc->rts_use_shortgi = false;
552
553 if (rate_flag & IEEE80211_TX_RC_USE_CTS_PROTECT) {
554 /* Use CTS-to-SELF in protection mode. */
555 tcb_desc->rts_enable = true;
556 tcb_desc->cts_enable = true;
557 tcb_desc->rts_rate = rtlpriv->cfg->maps[RTL_RC_OFDM_RATE24M];
558 } else if (rate_flag & IEEE80211_TX_RC_USE_RTS_CTS) {
559 /* Use RTS-CTS in protection mode. */
560 tcb_desc->rts_enable = true;
561 tcb_desc->rts_rate = rtlpriv->cfg->maps[RTL_RC_OFDM_RATE24M];
562 }
563 }
564
565 static void _rtl_txrate_selectmode(struct ieee80211_hw *hw,
566 struct ieee80211_sta *sta,
567 struct rtl_tcb_desc *tcb_desc)
568 {
569 struct rtl_priv *rtlpriv = rtl_priv(hw);
570 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
571 struct rtl_sta_info *sta_entry = NULL;
572 u8 ratr_index = 7;
573
574 if (sta) {
575 sta_entry = (struct rtl_sta_info *) sta->drv_priv;
576 ratr_index = sta_entry->ratr_index;
577 }
578 if (!tcb_desc->disable_ratefallback || !tcb_desc->use_driver_rate) {
579 if (mac->opmode == NL80211_IFTYPE_STATION) {
580 tcb_desc->ratr_index = 0;
581 } else if (mac->opmode == NL80211_IFTYPE_ADHOC) {
582 if (tcb_desc->multicast || tcb_desc->broadcast) {
583 tcb_desc->hw_rate =
584 rtlpriv->cfg->maps[RTL_RC_CCK_RATE2M];
585 tcb_desc->use_driver_rate = 1;
586 } else {
587 /* TODO */
588 }
589 tcb_desc->ratr_index = ratr_index;
590 } else if (mac->opmode == NL80211_IFTYPE_AP) {
591 tcb_desc->ratr_index = ratr_index;
592 }
593 }
594
595 if (rtlpriv->dm.useramask) {
596 /* TODO we will differentiate adhoc and station futrue */
597 if (mac->opmode == NL80211_IFTYPE_STATION) {
598 tcb_desc->mac_id = 0;
599
600 if (mac->mode == WIRELESS_MODE_N_24G)
601 tcb_desc->ratr_index = RATR_INX_WIRELESS_NGB;
602 else if (mac->mode == WIRELESS_MODE_N_5G)
603 tcb_desc->ratr_index = RATR_INX_WIRELESS_NG;
604 else if (mac->mode & WIRELESS_MODE_G)
605 tcb_desc->ratr_index = RATR_INX_WIRELESS_GB;
606 else if (mac->mode & WIRELESS_MODE_B)
607 tcb_desc->ratr_index = RATR_INX_WIRELESS_B;
608 else if (mac->mode & WIRELESS_MODE_A)
609 tcb_desc->ratr_index = RATR_INX_WIRELESS_G;
610 } else if (mac->opmode == NL80211_IFTYPE_AP ||
611 mac->opmode == NL80211_IFTYPE_ADHOC) {
612 if (NULL != sta) {
613 if (sta->aid > 0)
614 tcb_desc->mac_id = sta->aid + 1;
615 else
616 tcb_desc->mac_id = 1;
617 } else {
618 tcb_desc->mac_id = 0;
619 }
620 }
621 }
622
623 }
624
625 static void _rtl_query_bandwidth_mode(struct ieee80211_hw *hw,
626 struct ieee80211_sta *sta,
627 struct rtl_tcb_desc *tcb_desc)
628 {
629 struct rtl_priv *rtlpriv = rtl_priv(hw);
630 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
631
632 tcb_desc->packet_bw = false;
633 if (!sta)
634 return;
635 if (mac->opmode == NL80211_IFTYPE_AP ||
636 mac->opmode == NL80211_IFTYPE_ADHOC) {
637 if (sta->bandwidth == IEEE80211_STA_RX_BW_20)
638 return;
639 } else if (mac->opmode == NL80211_IFTYPE_STATION) {
640 if (!mac->bw_40 || !(sta->ht_cap.ht_supported))
641 return;
642 }
643 if (tcb_desc->multicast || tcb_desc->broadcast)
644 return;
645
646 /*use legency rate, shall use 20MHz */
647 if (tcb_desc->hw_rate <= rtlpriv->cfg->maps[RTL_RC_OFDM_RATE54M])
648 return;
649
650 tcb_desc->packet_bw = true;
651 }
652
653 static u8 _rtl_get_highest_n_rate(struct ieee80211_hw *hw)
654 {
655 struct rtl_priv *rtlpriv = rtl_priv(hw);
656 struct rtl_phy *rtlphy = &(rtlpriv->phy);
657 u8 hw_rate;
658
659 if (get_rf_type(rtlphy) == RF_2T2R)
660 hw_rate = rtlpriv->cfg->maps[RTL_RC_HT_RATEMCS15];
661 else
662 hw_rate = rtlpriv->cfg->maps[RTL_RC_HT_RATEMCS7];
663
664 return hw_rate;
665 }
666
667 /* mac80211's rate_idx is like this:
668 *
669 * 2.4G band:rx_status->band == IEEE80211_BAND_2GHZ
670 *
671 * B/G rate:
672 * (rx_status->flag & RX_FLAG_HT) = 0,
673 * DESC92_RATE1M-->DESC92_RATE54M ==> idx is 0-->11,
674 *
675 * N rate:
676 * (rx_status->flag & RX_FLAG_HT) = 1,
677 * DESC92_RATEMCS0-->DESC92_RATEMCS15 ==> idx is 0-->15
678 *
679 * 5G band:rx_status->band == IEEE80211_BAND_5GHZ
680 * A rate:
681 * (rx_status->flag & RX_FLAG_HT) = 0,
682 * DESC92_RATE6M-->DESC92_RATE54M ==> idx is 0-->7,
683 *
684 * N rate:
685 * (rx_status->flag & RX_FLAG_HT) = 1,
686 * DESC92_RATEMCS0-->DESC92_RATEMCS15 ==> idx is 0-->15
687 */
688 int rtlwifi_rate_mapping(struct ieee80211_hw *hw,
689 bool isht, u8 desc_rate, bool first_ampdu)
690 {
691 int rate_idx;
692
693 if (false == isht) {
694 if (IEEE80211_BAND_2GHZ == hw->conf.channel->band) {
695 switch (desc_rate) {
696 case DESC92_RATE1M:
697 rate_idx = 0;
698 break;
699 case DESC92_RATE2M:
700 rate_idx = 1;
701 break;
702 case DESC92_RATE5_5M:
703 rate_idx = 2;
704 break;
705 case DESC92_RATE11M:
706 rate_idx = 3;
707 break;
708 case DESC92_RATE6M:
709 rate_idx = 4;
710 break;
711 case DESC92_RATE9M:
712 rate_idx = 5;
713 break;
714 case DESC92_RATE12M:
715 rate_idx = 6;
716 break;
717 case DESC92_RATE18M:
718 rate_idx = 7;
719 break;
720 case DESC92_RATE24M:
721 rate_idx = 8;
722 break;
723 case DESC92_RATE36M:
724 rate_idx = 9;
725 break;
726 case DESC92_RATE48M:
727 rate_idx = 10;
728 break;
729 case DESC92_RATE54M:
730 rate_idx = 11;
731 break;
732 default:
733 rate_idx = 0;
734 break;
735 }
736 } else {
737 switch (desc_rate) {
738 case DESC92_RATE6M:
739 rate_idx = 0;
740 break;
741 case DESC92_RATE9M:
742 rate_idx = 1;
743 break;
744 case DESC92_RATE12M:
745 rate_idx = 2;
746 break;
747 case DESC92_RATE18M:
748 rate_idx = 3;
749 break;
750 case DESC92_RATE24M:
751 rate_idx = 4;
752 break;
753 case DESC92_RATE36M:
754 rate_idx = 5;
755 break;
756 case DESC92_RATE48M:
757 rate_idx = 6;
758 break;
759 case DESC92_RATE54M:
760 rate_idx = 7;
761 break;
762 default:
763 rate_idx = 0;
764 break;
765 }
766 }
767
768 } else {
769
770 switch (desc_rate) {
771 case DESC92_RATEMCS0:
772 rate_idx = 0;
773 break;
774 case DESC92_RATEMCS1:
775 rate_idx = 1;
776 break;
777 case DESC92_RATEMCS2:
778 rate_idx = 2;
779 break;
780 case DESC92_RATEMCS3:
781 rate_idx = 3;
782 break;
783 case DESC92_RATEMCS4:
784 rate_idx = 4;
785 break;
786 case DESC92_RATEMCS5:
787 rate_idx = 5;
788 break;
789 case DESC92_RATEMCS6:
790 rate_idx = 6;
791 break;
792 case DESC92_RATEMCS7:
793 rate_idx = 7;
794 break;
795 case DESC92_RATEMCS8:
796 rate_idx = 8;
797 break;
798 case DESC92_RATEMCS9:
799 rate_idx = 9;
800 break;
801 case DESC92_RATEMCS10:
802 rate_idx = 10;
803 break;
804 case DESC92_RATEMCS11:
805 rate_idx = 11;
806 break;
807 case DESC92_RATEMCS12:
808 rate_idx = 12;
809 break;
810 case DESC92_RATEMCS13:
811 rate_idx = 13;
812 break;
813 case DESC92_RATEMCS14:
814 rate_idx = 14;
815 break;
816 case DESC92_RATEMCS15:
817 rate_idx = 15;
818 break;
819 default:
820 rate_idx = 0;
821 break;
822 }
823 }
824 return rate_idx;
825 }
826 EXPORT_SYMBOL(rtlwifi_rate_mapping);
827
828 bool rtl_tx_mgmt_proc(struct ieee80211_hw *hw, struct sk_buff *skb)
829 {
830 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
831 struct rtl_priv *rtlpriv = rtl_priv(hw);
832 __le16 fc = rtl_get_fc(skb);
833
834 if (rtlpriv->dm.supp_phymode_switch &&
835 mac->link_state < MAC80211_LINKED &&
836 (ieee80211_is_auth(fc) || ieee80211_is_probe_req(fc))) {
837 if (rtlpriv->cfg->ops->check_switch_to_dmdp)
838 rtlpriv->cfg->ops->check_switch_to_dmdp(hw);
839 }
840 if (ieee80211_is_auth(fc)) {
841 RT_TRACE(rtlpriv, COMP_SEND, DBG_DMESG, "MAC80211_LINKING\n");
842 rtl_ips_nic_on(hw);
843
844 mac->link_state = MAC80211_LINKING;
845 /* Dual mac */
846 rtlpriv->phy.need_iqk = true;
847 }
848
849 return true;
850 }
851
852 void rtl_get_tcb_desc(struct ieee80211_hw *hw,
853 struct ieee80211_tx_info *info,
854 struct ieee80211_sta *sta,
855 struct sk_buff *skb, struct rtl_tcb_desc *tcb_desc)
856 {
857 struct rtl_priv *rtlpriv = rtl_priv(hw);
858 struct rtl_mac *rtlmac = rtl_mac(rtl_priv(hw));
859 struct ieee80211_hdr *hdr = rtl_get_hdr(skb);
860 struct ieee80211_rate *txrate;
861 __le16 fc = hdr->frame_control;
862
863 txrate = ieee80211_get_tx_rate(hw, info);
864 if (txrate)
865 tcb_desc->hw_rate = txrate->hw_value;
866 else
867 tcb_desc->hw_rate = 0;
868
869 if (ieee80211_is_data(fc)) {
870 /*
871 *we set data rate INX 0
872 *in rtl_rc.c if skb is special data or
873 *mgt which need low data rate.
874 */
875
876 /*
877 *So tcb_desc->hw_rate is just used for
878 *special data and mgt frames
879 */
880 if (info->control.rates[0].idx == 0 ||
881 ieee80211_is_nullfunc(fc)) {
882 tcb_desc->use_driver_rate = true;
883 tcb_desc->ratr_index = RATR_INX_WIRELESS_MC;
884
885 tcb_desc->disable_ratefallback = 1;
886 } else {
887 /*
888 *because hw will nerver use hw_rate
889 *when tcb_desc->use_driver_rate = false
890 *so we never set highest N rate here,
891 *and N rate will all be controlled by FW
892 *when tcb_desc->use_driver_rate = false
893 */
894 if (sta && (sta->ht_cap.ht_supported)) {
895 tcb_desc->hw_rate = _rtl_get_highest_n_rate(hw);
896 } else {
897 if (rtlmac->mode == WIRELESS_MODE_B) {
898 tcb_desc->hw_rate =
899 rtlpriv->cfg->maps[RTL_RC_CCK_RATE11M];
900 } else {
901 tcb_desc->hw_rate =
902 rtlpriv->cfg->maps[RTL_RC_OFDM_RATE54M];
903 }
904 }
905 }
906
907 if (is_multicast_ether_addr(ieee80211_get_DA(hdr)))
908 tcb_desc->multicast = 1;
909 else if (is_broadcast_ether_addr(ieee80211_get_DA(hdr)))
910 tcb_desc->broadcast = 1;
911
912 _rtl_txrate_selectmode(hw, sta, tcb_desc);
913 _rtl_query_bandwidth_mode(hw, sta, tcb_desc);
914 _rtl_qurey_shortpreamble_mode(hw, tcb_desc, info);
915 _rtl_query_shortgi(hw, sta, tcb_desc, info);
916 _rtl_query_protection_mode(hw, tcb_desc, info);
917 } else {
918 tcb_desc->use_driver_rate = true;
919 tcb_desc->ratr_index = RATR_INX_WIRELESS_MC;
920 tcb_desc->disable_ratefallback = 1;
921 tcb_desc->mac_id = 0;
922 tcb_desc->packet_bw = false;
923 }
924 }
925 EXPORT_SYMBOL(rtl_get_tcb_desc);
926
927 bool rtl_action_proc(struct ieee80211_hw *hw, struct sk_buff *skb, u8 is_tx)
928 {
929 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
930 struct ieee80211_hdr *hdr = rtl_get_hdr(skb);
931 struct rtl_priv *rtlpriv = rtl_priv(hw);
932 __le16 fc = hdr->frame_control;
933 u8 *act = (u8 *)skb->data + MAC80211_3ADDR_LEN;
934 u8 category;
935
936 if (!ieee80211_is_action(fc))
937 return true;
938
939 category = *act;
940 act++;
941 switch (category) {
942 case ACT_CAT_BA:
943 switch (*act) {
944 case ACT_ADDBAREQ:
945 if (mac->act_scanning)
946 return false;
947
948 RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV), DBG_DMESG,
949 "%s ACT_ADDBAREQ From :%pM\n",
950 is_tx ? "Tx" : "Rx", hdr->addr2);
951 break;
952 case ACT_ADDBARSP:
953 RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV), DBG_DMESG,
954 "%s ACT_ADDBARSP From :%pM\n",
955 is_tx ? "Tx" : "Rx", hdr->addr2);
956 break;
957 case ACT_DELBA:
958 RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV), DBG_DMESG,
959 "ACT_ADDBADEL From :%pM\n", hdr->addr2);
960 break;
961 }
962 break;
963 default:
964 break;
965 }
966
967 return true;
968 }
969
970 /*should call before software enc*/
971 u8 rtl_is_special_data(struct ieee80211_hw *hw, struct sk_buff *skb, u8 is_tx)
972 {
973 struct rtl_priv *rtlpriv = rtl_priv(hw);
974 struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
975 __le16 fc = rtl_get_fc(skb);
976 u16 ether_type;
977 u8 mac_hdr_len = ieee80211_get_hdrlen_from_skb(skb);
978 const struct iphdr *ip;
979
980 if (!ieee80211_is_data(fc))
981 return false;
982
983
984 ip = (struct iphdr *)((u8 *) skb->data + mac_hdr_len +
985 SNAP_SIZE + PROTOC_TYPE_SIZE);
986 ether_type = *(u16 *) ((u8 *) skb->data + mac_hdr_len + SNAP_SIZE);
987 /* ether_type = ntohs(ether_type); */
988
989 if (ETH_P_IP == ether_type) {
990 if (IPPROTO_UDP == ip->protocol) {
991 struct udphdr *udp = (struct udphdr *)((u8 *) ip +
992 (ip->ihl << 2));
993 if (((((u8 *) udp)[1] == 68) &&
994 (((u8 *) udp)[3] == 67)) ||
995 ((((u8 *) udp)[1] == 67) &&
996 (((u8 *) udp)[3] == 68))) {
997 /*
998 * 68 : UDP BOOTP client
999 * 67 : UDP BOOTP server
1000 */
1001 RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV),
1002 DBG_DMESG, "dhcp %s !!\n",
1003 is_tx ? "Tx" : "Rx");
1004
1005 if (is_tx) {
1006 rtl_lps_leave(hw);
1007 ppsc->last_delaylps_stamp_jiffies =
1008 jiffies;
1009 }
1010
1011 return true;
1012 }
1013 }
1014 } else if (ETH_P_ARP == ether_type) {
1015 if (is_tx) {
1016 rtl_lps_leave(hw);
1017 ppsc->last_delaylps_stamp_jiffies = jiffies;
1018 }
1019
1020 return true;
1021 } else if (ETH_P_PAE == ether_type) {
1022 RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV), DBG_DMESG,
1023 "802.1X %s EAPOL pkt!!\n", is_tx ? "Tx" : "Rx");
1024
1025 if (is_tx) {
1026 rtl_lps_leave(hw);
1027 ppsc->last_delaylps_stamp_jiffies = jiffies;
1028 }
1029
1030 return true;
1031 } else if (ETH_P_IPV6 == ether_type) {
1032 /* IPv6 */
1033 return true;
1034 }
1035
1036 return false;
1037 }
1038
1039 /*********************************************************
1040 *
1041 * functions called by core.c
1042 *
1043 *********************************************************/
1044 int rtl_tx_agg_start(struct ieee80211_hw *hw,
1045 struct ieee80211_sta *sta, u16 tid, u16 *ssn)
1046 {
1047 struct rtl_priv *rtlpriv = rtl_priv(hw);
1048 struct rtl_tid_data *tid_data;
1049 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
1050 struct rtl_sta_info *sta_entry = NULL;
1051
1052 if (sta == NULL)
1053 return -EINVAL;
1054
1055 if (unlikely(tid >= MAX_TID_COUNT))
1056 return -EINVAL;
1057
1058 sta_entry = (struct rtl_sta_info *)sta->drv_priv;
1059 if (!sta_entry)
1060 return -ENXIO;
1061 tid_data = &sta_entry->tids[tid];
1062
1063 RT_TRACE(rtlpriv, COMP_SEND, DBG_DMESG, "on ra = %pM tid = %d seq:%d\n",
1064 sta->addr, tid, tid_data->seq_number);
1065
1066 *ssn = tid_data->seq_number;
1067 tid_data->agg.agg_state = RTL_AGG_START;
1068
1069 ieee80211_start_tx_ba_cb_irqsafe(mac->vif, sta->addr, tid);
1070
1071 return 0;
1072 }
1073
1074 int rtl_tx_agg_stop(struct ieee80211_hw *hw,
1075 struct ieee80211_sta *sta, u16 tid)
1076 {
1077 struct rtl_priv *rtlpriv = rtl_priv(hw);
1078 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
1079 struct rtl_sta_info *sta_entry = NULL;
1080
1081 if (sta == NULL)
1082 return -EINVAL;
1083
1084 if (!sta->addr) {
1085 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, "ra = NULL\n");
1086 return -EINVAL;
1087 }
1088
1089 RT_TRACE(rtlpriv, COMP_SEND, DBG_DMESG, "on ra = %pM tid = %d\n",
1090 sta->addr, tid);
1091
1092 if (unlikely(tid >= MAX_TID_COUNT))
1093 return -EINVAL;
1094
1095 sta_entry = (struct rtl_sta_info *)sta->drv_priv;
1096 sta_entry->tids[tid].agg.agg_state = RTL_AGG_STOP;
1097
1098 ieee80211_stop_tx_ba_cb_irqsafe(mac->vif, sta->addr, tid);
1099
1100 return 0;
1101 }
1102
1103 int rtl_tx_agg_oper(struct ieee80211_hw *hw,
1104 struct ieee80211_sta *sta, u16 tid)
1105 {
1106 struct rtl_priv *rtlpriv = rtl_priv(hw);
1107 struct rtl_sta_info *sta_entry = NULL;
1108
1109 if (sta == NULL)
1110 return -EINVAL;
1111
1112 if (!sta->addr) {
1113 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, "ra = NULL\n");
1114 return -EINVAL;
1115 }
1116
1117 RT_TRACE(rtlpriv, COMP_SEND, DBG_DMESG, "on ra = %pM tid = %d\n",
1118 sta->addr, tid);
1119
1120 if (unlikely(tid >= MAX_TID_COUNT))
1121 return -EINVAL;
1122
1123 sta_entry = (struct rtl_sta_info *)sta->drv_priv;
1124 sta_entry->tids[tid].agg.agg_state = RTL_AGG_OPERATIONAL;
1125
1126 return 0;
1127 }
1128
1129 /*********************************************************
1130 *
1131 * wq & timer callback functions
1132 *
1133 *********************************************************/
1134 void rtl_watchdog_wq_callback(void *data)
1135 {
1136 struct rtl_works *rtlworks = container_of_dwork_rtl(data,
1137 struct rtl_works,
1138 watchdog_wq);
1139 struct ieee80211_hw *hw = rtlworks->hw;
1140 struct rtl_priv *rtlpriv = rtl_priv(hw);
1141 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
1142 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
1143 bool busytraffic = false;
1144 bool higher_busytraffic = false;
1145 bool higher_busyrxtraffic = false;
1146 u8 idx, tid;
1147 u32 rx_cnt_inp4eriod = 0;
1148 u32 tx_cnt_inp4eriod = 0;
1149 u32 aver_rx_cnt_inperiod = 0;
1150 u32 aver_tx_cnt_inperiod = 0;
1151 u32 aver_tidtx_inperiod[MAX_TID_COUNT] = {0};
1152 u32 tidtx_inp4eriod[MAX_TID_COUNT] = {0};
1153 bool enter_ps = false;
1154
1155 if (is_hal_stop(rtlhal))
1156 return;
1157
1158 /* <1> Determine if action frame is allowed */
1159 if (mac->link_state > MAC80211_NOLINK) {
1160 if (mac->cnt_after_linked < 20)
1161 mac->cnt_after_linked++;
1162 } else {
1163 mac->cnt_after_linked = 0;
1164 }
1165
1166 /*
1167 *<2> to check if traffic busy, if
1168 * busytraffic we don't change channel
1169 */
1170 if (mac->link_state >= MAC80211_LINKED) {
1171
1172 /* (1) get aver_rx_cnt_inperiod & aver_tx_cnt_inperiod */
1173 for (idx = 0; idx <= 2; idx++) {
1174 rtlpriv->link_info.num_rx_in4period[idx] =
1175 rtlpriv->link_info.num_rx_in4period[idx + 1];
1176 rtlpriv->link_info.num_tx_in4period[idx] =
1177 rtlpriv->link_info.num_tx_in4period[idx + 1];
1178 }
1179 rtlpriv->link_info.num_rx_in4period[3] =
1180 rtlpriv->link_info.num_rx_inperiod;
1181 rtlpriv->link_info.num_tx_in4period[3] =
1182 rtlpriv->link_info.num_tx_inperiod;
1183 for (idx = 0; idx <= 3; idx++) {
1184 rx_cnt_inp4eriod +=
1185 rtlpriv->link_info.num_rx_in4period[idx];
1186 tx_cnt_inp4eriod +=
1187 rtlpriv->link_info.num_tx_in4period[idx];
1188 }
1189 aver_rx_cnt_inperiod = rx_cnt_inp4eriod / 4;
1190 aver_tx_cnt_inperiod = tx_cnt_inp4eriod / 4;
1191
1192 /* (2) check traffic busy */
1193 if (aver_rx_cnt_inperiod > 100 || aver_tx_cnt_inperiod > 100)
1194 busytraffic = true;
1195
1196 /* Higher Tx/Rx data. */
1197 if (aver_rx_cnt_inperiod > 4000 ||
1198 aver_tx_cnt_inperiod > 4000) {
1199 higher_busytraffic = true;
1200
1201 /* Extremely high Rx data. */
1202 if (aver_rx_cnt_inperiod > 5000)
1203 higher_busyrxtraffic = true;
1204 }
1205
1206 /* check every tid's tx traffic */
1207 for (tid = 0; tid <= 7; tid++) {
1208 for (idx = 0; idx <= 2; idx++)
1209 rtlpriv->link_info.tidtx_in4period[tid][idx] =
1210 rtlpriv->link_info.tidtx_in4period[tid]
1211 [idx + 1];
1212 rtlpriv->link_info.tidtx_in4period[tid][3] =
1213 rtlpriv->link_info.tidtx_inperiod[tid];
1214
1215 for (idx = 0; idx <= 3; idx++)
1216 tidtx_inp4eriod[tid] +=
1217 rtlpriv->link_info.tidtx_in4period[tid][idx];
1218 aver_tidtx_inperiod[tid] = tidtx_inp4eriod[tid] / 4;
1219 if (aver_tidtx_inperiod[tid] > 5000)
1220 rtlpriv->link_info.higher_busytxtraffic[tid] =
1221 true;
1222 else
1223 rtlpriv->link_info.higher_busytxtraffic[tid] =
1224 false;
1225 }
1226
1227 if (((rtlpriv->link_info.num_rx_inperiod +
1228 rtlpriv->link_info.num_tx_inperiod) > 8) ||
1229 (rtlpriv->link_info.num_rx_inperiod > 2))
1230 enter_ps = false;
1231 else
1232 enter_ps = true;
1233
1234 /* LeisurePS only work in infra mode. */
1235 if (enter_ps)
1236 rtl_lps_enter(hw);
1237 else
1238 rtl_lps_leave(hw);
1239 }
1240
1241 rtlpriv->link_info.num_rx_inperiod = 0;
1242 rtlpriv->link_info.num_tx_inperiod = 0;
1243 for (tid = 0; tid <= 7; tid++)
1244 rtlpriv->link_info.tidtx_inperiod[tid] = 0;
1245
1246 rtlpriv->link_info.busytraffic = busytraffic;
1247 rtlpriv->link_info.higher_busytraffic = higher_busytraffic;
1248 rtlpriv->link_info.higher_busyrxtraffic = higher_busyrxtraffic;
1249
1250 /* <3> DM */
1251 rtlpriv->cfg->ops->dm_watchdog(hw);
1252 }
1253
1254 void rtl_watch_dog_timer_callback(unsigned long data)
1255 {
1256 struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
1257 struct rtl_priv *rtlpriv = rtl_priv(hw);
1258
1259 queue_delayed_work(rtlpriv->works.rtl_wq,
1260 &rtlpriv->works.watchdog_wq, 0);
1261
1262 mod_timer(&rtlpriv->works.watchdog_timer,
1263 jiffies + MSECS(RTL_WATCH_DOG_TIME));
1264 }
1265
1266 /*********************************************************
1267 *
1268 * frame process functions
1269 *
1270 *********************************************************/
1271 u8 *rtl_find_ie(u8 *data, unsigned int len, u8 ie)
1272 {
1273 struct ieee80211_mgmt *mgmt = (void *)data;
1274 u8 *pos, *end;
1275
1276 pos = (u8 *)mgmt->u.beacon.variable;
1277 end = data + len;
1278 while (pos < end) {
1279 if (pos + 2 + pos[1] > end)
1280 return NULL;
1281
1282 if (pos[0] == ie)
1283 return pos;
1284
1285 pos += 2 + pos[1];
1286 }
1287 return NULL;
1288 }
1289
1290 /* when we use 2 rx ants we send IEEE80211_SMPS_OFF */
1291 /* when we use 1 rx ant we send IEEE80211_SMPS_STATIC */
1292 static struct sk_buff *rtl_make_smps_action(struct ieee80211_hw *hw,
1293 enum ieee80211_smps_mode smps, u8 *da, u8 *bssid)
1294 {
1295 struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw));
1296 struct sk_buff *skb;
1297 struct ieee80211_mgmt *action_frame;
1298
1299 /* 27 = header + category + action + smps mode */
1300 skb = dev_alloc_skb(27 + hw->extra_tx_headroom);
1301 if (!skb)
1302 return NULL;
1303
1304 skb_reserve(skb, hw->extra_tx_headroom);
1305 action_frame = (void *)skb_put(skb, 27);
1306 memset(action_frame, 0, 27);
1307 memcpy(action_frame->da, da, ETH_ALEN);
1308 memcpy(action_frame->sa, rtlefuse->dev_addr, ETH_ALEN);
1309 memcpy(action_frame->bssid, bssid, ETH_ALEN);
1310 action_frame->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
1311 IEEE80211_STYPE_ACTION);
1312 action_frame->u.action.category = WLAN_CATEGORY_HT;
1313 action_frame->u.action.u.ht_smps.action = WLAN_HT_ACTION_SMPS;
1314 switch (smps) {
1315 case IEEE80211_SMPS_AUTOMATIC:/* 0 */
1316 case IEEE80211_SMPS_NUM_MODES:/* 4 */
1317 WARN_ON(1);
1318 case IEEE80211_SMPS_OFF:/* 1 */ /*MIMO_PS_NOLIMIT*/
1319 action_frame->u.action.u.ht_smps.smps_control =
1320 WLAN_HT_SMPS_CONTROL_DISABLED;/* 0 */
1321 break;
1322 case IEEE80211_SMPS_STATIC:/* 2 */ /*MIMO_PS_STATIC*/
1323 action_frame->u.action.u.ht_smps.smps_control =
1324 WLAN_HT_SMPS_CONTROL_STATIC;/* 1 */
1325 break;
1326 case IEEE80211_SMPS_DYNAMIC:/* 3 */ /*MIMO_PS_DYNAMIC*/
1327 action_frame->u.action.u.ht_smps.smps_control =
1328 WLAN_HT_SMPS_CONTROL_DYNAMIC;/* 3 */
1329 break;
1330 }
1331
1332 return skb;
1333 }
1334
1335 int rtl_send_smps_action(struct ieee80211_hw *hw,
1336 struct ieee80211_sta *sta, u8 *da, u8 *bssid,
1337 enum ieee80211_smps_mode smps)
1338 {
1339 struct rtl_priv *rtlpriv = rtl_priv(hw);
1340 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
1341 struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
1342 struct sk_buff *skb = rtl_make_smps_action(hw, smps, da, bssid);
1343 struct rtl_tcb_desc tcb_desc;
1344 memset(&tcb_desc, 0, sizeof(struct rtl_tcb_desc));
1345
1346 if (rtlpriv->mac80211.act_scanning)
1347 goto err_free;
1348
1349 if (!sta)
1350 goto err_free;
1351
1352 if (unlikely(is_hal_stop(rtlhal) || ppsc->rfpwr_state != ERFON))
1353 goto err_free;
1354
1355 if (!test_bit(RTL_STATUS_INTERFACE_START, &rtlpriv->status))
1356 goto err_free;
1357
1358 /* this is a type = mgmt * stype = action frame */
1359 if (skb) {
1360 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1361 struct rtl_sta_info *sta_entry =
1362 (struct rtl_sta_info *) sta->drv_priv;
1363 sta_entry->mimo_ps = smps;
1364 rtlpriv->cfg->ops->update_rate_tbl(hw, sta, 0);
1365
1366 info->control.rates[0].idx = 0;
1367 info->band = hw->conf.channel->band;
1368 rtlpriv->intf_ops->adapter_tx(hw, sta, skb, &tcb_desc);
1369 }
1370 err_free:
1371 return 0;
1372 }
1373
1374 /*********************************************************
1375 *
1376 * IOT functions
1377 *
1378 *********************************************************/
1379 static bool rtl_chk_vendor_ouisub(struct ieee80211_hw *hw,
1380 struct octet_string vendor_ie)
1381 {
1382 struct rtl_priv *rtlpriv = rtl_priv(hw);
1383 bool matched = false;
1384 static u8 athcap_1[] = { 0x00, 0x03, 0x7F };
1385 static u8 athcap_2[] = { 0x00, 0x13, 0x74 };
1386 static u8 broadcap_1[] = { 0x00, 0x10, 0x18 };
1387 static u8 broadcap_2[] = { 0x00, 0x0a, 0xf7 };
1388 static u8 broadcap_3[] = { 0x00, 0x05, 0xb5 };
1389 static u8 racap[] = { 0x00, 0x0c, 0x43 };
1390 static u8 ciscocap[] = { 0x00, 0x40, 0x96 };
1391 static u8 marvcap[] = { 0x00, 0x50, 0x43 };
1392
1393 if (memcmp(vendor_ie.octet, athcap_1, 3) == 0 ||
1394 memcmp(vendor_ie.octet, athcap_2, 3) == 0) {
1395 rtlpriv->mac80211.vendor = PEER_ATH;
1396 matched = true;
1397 } else if (memcmp(vendor_ie.octet, broadcap_1, 3) == 0 ||
1398 memcmp(vendor_ie.octet, broadcap_2, 3) == 0 ||
1399 memcmp(vendor_ie.octet, broadcap_3, 3) == 0) {
1400 rtlpriv->mac80211.vendor = PEER_BROAD;
1401 matched = true;
1402 } else if (memcmp(vendor_ie.octet, racap, 3) == 0) {
1403 rtlpriv->mac80211.vendor = PEER_RAL;
1404 matched = true;
1405 } else if (memcmp(vendor_ie.octet, ciscocap, 3) == 0) {
1406 rtlpriv->mac80211.vendor = PEER_CISCO;
1407 matched = true;
1408 } else if (memcmp(vendor_ie.octet, marvcap, 3) == 0) {
1409 rtlpriv->mac80211.vendor = PEER_MARV;
1410 matched = true;
1411 }
1412
1413 return matched;
1414 }
1415
1416 static bool rtl_find_221_ie(struct ieee80211_hw *hw, u8 *data,
1417 unsigned int len)
1418 {
1419 struct ieee80211_mgmt *mgmt = (void *)data;
1420 struct octet_string vendor_ie;
1421 u8 *pos, *end;
1422
1423 pos = (u8 *)mgmt->u.beacon.variable;
1424 end = data + len;
1425 while (pos < end) {
1426 if (pos[0] == 221) {
1427 vendor_ie.length = pos[1];
1428 vendor_ie.octet = &pos[2];
1429 if (rtl_chk_vendor_ouisub(hw, vendor_ie))
1430 return true;
1431 }
1432
1433 if (pos + 2 + pos[1] > end)
1434 return false;
1435
1436 pos += 2 + pos[1];
1437 }
1438 return false;
1439 }
1440
1441 void rtl_recognize_peer(struct ieee80211_hw *hw, u8 *data, unsigned int len)
1442 {
1443 struct rtl_priv *rtlpriv = rtl_priv(hw);
1444 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
1445 struct ieee80211_hdr *hdr = (void *)data;
1446 u32 vendor = PEER_UNKNOWN;
1447
1448 static u8 ap3_1[3] = { 0x00, 0x14, 0xbf };
1449 static u8 ap3_2[3] = { 0x00, 0x1a, 0x70 };
1450 static u8 ap3_3[3] = { 0x00, 0x1d, 0x7e };
1451 static u8 ap4_1[3] = { 0x00, 0x90, 0xcc };
1452 static u8 ap4_2[3] = { 0x00, 0x0e, 0x2e };
1453 static u8 ap4_3[3] = { 0x00, 0x18, 0x02 };
1454 static u8 ap4_4[3] = { 0x00, 0x17, 0x3f };
1455 static u8 ap4_5[3] = { 0x00, 0x1c, 0xdf };
1456 static u8 ap5_1[3] = { 0x00, 0x1c, 0xf0 };
1457 static u8 ap5_2[3] = { 0x00, 0x21, 0x91 };
1458 static u8 ap5_3[3] = { 0x00, 0x24, 0x01 };
1459 static u8 ap5_4[3] = { 0x00, 0x15, 0xe9 };
1460 static u8 ap5_5[3] = { 0x00, 0x17, 0x9A };
1461 static u8 ap5_6[3] = { 0x00, 0x18, 0xE7 };
1462 static u8 ap6_1[3] = { 0x00, 0x17, 0x94 };
1463 static u8 ap7_1[3] = { 0x00, 0x14, 0xa4 };
1464
1465 if (mac->opmode != NL80211_IFTYPE_STATION)
1466 return;
1467
1468 if (mac->link_state == MAC80211_NOLINK) {
1469 mac->vendor = PEER_UNKNOWN;
1470 return;
1471 }
1472
1473 if (mac->cnt_after_linked > 2)
1474 return;
1475
1476 /* check if this really is a beacon */
1477 if (!ieee80211_is_beacon(hdr->frame_control))
1478 return;
1479
1480 /* min. beacon length + FCS_LEN */
1481 if (len <= 40 + FCS_LEN)
1482 return;
1483
1484 /* and only beacons from the associated BSSID, please */
1485 if (!ether_addr_equal(hdr->addr3, rtlpriv->mac80211.bssid))
1486 return;
1487
1488 if (rtl_find_221_ie(hw, data, len))
1489 vendor = mac->vendor;
1490
1491 if ((memcmp(mac->bssid, ap5_1, 3) == 0) ||
1492 (memcmp(mac->bssid, ap5_2, 3) == 0) ||
1493 (memcmp(mac->bssid, ap5_3, 3) == 0) ||
1494 (memcmp(mac->bssid, ap5_4, 3) == 0) ||
1495 (memcmp(mac->bssid, ap5_5, 3) == 0) ||
1496 (memcmp(mac->bssid, ap5_6, 3) == 0) ||
1497 vendor == PEER_ATH) {
1498 vendor = PEER_ATH;
1499 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD, "=>ath find\n");
1500 } else if ((memcmp(mac->bssid, ap4_4, 3) == 0) ||
1501 (memcmp(mac->bssid, ap4_5, 3) == 0) ||
1502 (memcmp(mac->bssid, ap4_1, 3) == 0) ||
1503 (memcmp(mac->bssid, ap4_2, 3) == 0) ||
1504 (memcmp(mac->bssid, ap4_3, 3) == 0) ||
1505 vendor == PEER_RAL) {
1506 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD, "=>ral find\n");
1507 vendor = PEER_RAL;
1508 } else if (memcmp(mac->bssid, ap6_1, 3) == 0 ||
1509 vendor == PEER_CISCO) {
1510 vendor = PEER_CISCO;
1511 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD, "=>cisco find\n");
1512 } else if ((memcmp(mac->bssid, ap3_1, 3) == 0) ||
1513 (memcmp(mac->bssid, ap3_2, 3) == 0) ||
1514 (memcmp(mac->bssid, ap3_3, 3) == 0) ||
1515 vendor == PEER_BROAD) {
1516 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD, "=>broad find\n");
1517 vendor = PEER_BROAD;
1518 } else if (memcmp(mac->bssid, ap7_1, 3) == 0 ||
1519 vendor == PEER_MARV) {
1520 vendor = PEER_MARV;
1521 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD, "=>marv find\n");
1522 }
1523
1524 mac->vendor = vendor;
1525 }
1526
1527 /*********************************************************
1528 *
1529 * sysfs functions
1530 *
1531 *********************************************************/
1532 static ssize_t rtl_show_debug_level(struct device *d,
1533 struct device_attribute *attr, char *buf)
1534 {
1535 struct ieee80211_hw *hw = dev_get_drvdata(d);
1536 struct rtl_priv *rtlpriv = rtl_priv(hw);
1537
1538 return sprintf(buf, "0x%08X\n", rtlpriv->dbg.global_debuglevel);
1539 }
1540
1541 static ssize_t rtl_store_debug_level(struct device *d,
1542 struct device_attribute *attr,
1543 const char *buf, size_t count)
1544 {
1545 struct ieee80211_hw *hw = dev_get_drvdata(d);
1546 struct rtl_priv *rtlpriv = rtl_priv(hw);
1547 unsigned long val;
1548 int ret;
1549
1550 ret = strict_strtoul(buf, 0, &val);
1551 if (ret) {
1552 printk(KERN_DEBUG "%s is not in hex or decimal form.\n", buf);
1553 } else {
1554 rtlpriv->dbg.global_debuglevel = val;
1555 printk(KERN_DEBUG "debuglevel:%x\n",
1556 rtlpriv->dbg.global_debuglevel);
1557 }
1558
1559 return strnlen(buf, count);
1560 }
1561
1562 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
1563 rtl_show_debug_level, rtl_store_debug_level);
1564
1565 static struct attribute *rtl_sysfs_entries[] = {
1566
1567 &dev_attr_debug_level.attr,
1568
1569 NULL
1570 };
1571
1572 /*
1573 * "name" is folder name witch will be
1574 * put in device directory like :
1575 * sys/devices/pci0000:00/0000:00:1c.4/
1576 * 0000:06:00.0/rtl_sysfs
1577 */
1578 struct attribute_group rtl_attribute_group = {
1579 .name = "rtlsysfs",
1580 .attrs = rtl_sysfs_entries,
1581 };
1582
1583 MODULE_AUTHOR("lizhaoming <chaoming_li@realsil.com.cn>");
1584 MODULE_AUTHOR("Realtek WlanFAE <wlanfae@realtek.com>");
1585 MODULE_AUTHOR("Larry Finger <Larry.FInger@lwfinger.net>");
1586 MODULE_LICENSE("GPL");
1587 MODULE_DESCRIPTION("Realtek 802.11n PCI wireless core");
1588
1589 static int __init rtl_core_module_init(void)
1590 {
1591 if (rtl_rate_control_register())
1592 pr_err("Unable to register rtl_rc, use default RC !!\n");
1593
1594 return 0;
1595 }
1596
1597 static void __exit rtl_core_module_exit(void)
1598 {
1599 /*RC*/
1600 rtl_rate_control_unregister();
1601 }
1602
1603 module_init(rtl_core_module_init);
1604 module_exit(rtl_core_module_exit);
Linux kernel - Deliverables
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