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) vif functions
58 *9) ...
59 */
60
61 /*********************************************************
62 *
63 * mac80211 init functions
64 *
65 *********************************************************/
66 static struct ieee80211_channel rtl_channeltable_2g[] = {
67 {.center_freq = 2412, .hw_value = 1,},
68 {.center_freq = 2417, .hw_value = 2,},
69 {.center_freq = 2422, .hw_value = 3,},
70 {.center_freq = 2427, .hw_value = 4,},
71 {.center_freq = 2432, .hw_value = 5,},
72 {.center_freq = 2437, .hw_value = 6,},
73 {.center_freq = 2442, .hw_value = 7,},
74 {.center_freq = 2447, .hw_value = 8,},
75 {.center_freq = 2452, .hw_value = 9,},
76 {.center_freq = 2457, .hw_value = 10,},
77 {.center_freq = 2462, .hw_value = 11,},
78 {.center_freq = 2467, .hw_value = 12,},
79 {.center_freq = 2472, .hw_value = 13,},
80 {.center_freq = 2484, .hw_value = 14,},
81 };
82
83 static struct ieee80211_channel rtl_channeltable_5g[] = {
84 {.center_freq = 5180, .hw_value = 36,},
85 {.center_freq = 5200, .hw_value = 40,},
86 {.center_freq = 5220, .hw_value = 44,},
87 {.center_freq = 5240, .hw_value = 48,},
88 {.center_freq = 5260, .hw_value = 52,},
89 {.center_freq = 5280, .hw_value = 56,},
90 {.center_freq = 5300, .hw_value = 60,},
91 {.center_freq = 5320, .hw_value = 64,},
92 {.center_freq = 5500, .hw_value = 100,},
93 {.center_freq = 5520, .hw_value = 104,},
94 {.center_freq = 5540, .hw_value = 108,},
95 {.center_freq = 5560, .hw_value = 112,},
96 {.center_freq = 5580, .hw_value = 116,},
97 {.center_freq = 5600, .hw_value = 120,},
98 {.center_freq = 5620, .hw_value = 124,},
99 {.center_freq = 5640, .hw_value = 128,},
100 {.center_freq = 5660, .hw_value = 132,},
101 {.center_freq = 5680, .hw_value = 136,},
102 {.center_freq = 5700, .hw_value = 140,},
103 {.center_freq = 5745, .hw_value = 149,},
104 {.center_freq = 5765, .hw_value = 153,},
105 {.center_freq = 5785, .hw_value = 157,},
106 {.center_freq = 5805, .hw_value = 161,},
107 {.center_freq = 5825, .hw_value = 165,},
108 };
109
110 static struct ieee80211_rate rtl_ratetable_2g[] = {
111 {.bitrate = 10, .hw_value = 0x00,},
112 {.bitrate = 20, .hw_value = 0x01,},
113 {.bitrate = 55, .hw_value = 0x02,},
114 {.bitrate = 110, .hw_value = 0x03,},
115 {.bitrate = 60, .hw_value = 0x04,},
116 {.bitrate = 90, .hw_value = 0x05,},
117 {.bitrate = 120, .hw_value = 0x06,},
118 {.bitrate = 180, .hw_value = 0x07,},
119 {.bitrate = 240, .hw_value = 0x08,},
120 {.bitrate = 360, .hw_value = 0x09,},
121 {.bitrate = 480, .hw_value = 0x0a,},
122 {.bitrate = 540, .hw_value = 0x0b,},
123 };
124
125 static struct ieee80211_rate rtl_ratetable_5g[] = {
126 {.bitrate = 60, .hw_value = 0x04,},
127 {.bitrate = 90, .hw_value = 0x05,},
128 {.bitrate = 120, .hw_value = 0x06,},
129 {.bitrate = 180, .hw_value = 0x07,},
130 {.bitrate = 240, .hw_value = 0x08,},
131 {.bitrate = 360, .hw_value = 0x09,},
132 {.bitrate = 480, .hw_value = 0x0a,},
133 {.bitrate = 540, .hw_value = 0x0b,},
134 };
135
136 static const struct ieee80211_supported_band rtl_band_2ghz = {
137 .band = IEEE80211_BAND_2GHZ,
138
139 .channels = rtl_channeltable_2g,
140 .n_channels = ARRAY_SIZE(rtl_channeltable_2g),
141
142 .bitrates = rtl_ratetable_2g,
143 .n_bitrates = ARRAY_SIZE(rtl_ratetable_2g),
144
145 .ht_cap = {0},
146 };
147
148 static struct ieee80211_supported_band rtl_band_5ghz = {
149 .band = IEEE80211_BAND_5GHZ,
150
151 .channels = rtl_channeltable_5g,
152 .n_channels = ARRAY_SIZE(rtl_channeltable_5g),
153
154 .bitrates = rtl_ratetable_5g,
155 .n_bitrates = ARRAY_SIZE(rtl_ratetable_5g),
156
157 .ht_cap = {0},
158 };
159
160 static const u8 tid_to_ac[] = {
161 2, /* IEEE80211_AC_BE */
162 3, /* IEEE80211_AC_BK */
163 3, /* IEEE80211_AC_BK */
164 2, /* IEEE80211_AC_BE */
165 1, /* IEEE80211_AC_VI */
166 1, /* IEEE80211_AC_VI */
167 0, /* IEEE80211_AC_VO */
168 0, /* IEEE80211_AC_VO */
169 };
170
rtl_tid_to_ac(u8 tid)171 u8 rtl_tid_to_ac(u8 tid)
172 {
173 return tid_to_ac[tid];
174 }
175
_rtl_init_hw_ht_capab(struct ieee80211_hw * hw,struct ieee80211_sta_ht_cap * ht_cap)176 static void _rtl_init_hw_ht_capab(struct ieee80211_hw *hw,
177 struct ieee80211_sta_ht_cap *ht_cap)
178 {
179 struct rtl_priv *rtlpriv = rtl_priv(hw);
180 struct rtl_phy *rtlphy = &(rtlpriv->phy);
181
182 ht_cap->ht_supported = true;
183 ht_cap->cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
184 IEEE80211_HT_CAP_SGI_40 |
185 IEEE80211_HT_CAP_SGI_20 |
186 IEEE80211_HT_CAP_DSSSCCK40 | IEEE80211_HT_CAP_MAX_AMSDU;
187
188 if (rtlpriv->rtlhal.disable_amsdu_8k)
189 ht_cap->cap &= ~IEEE80211_HT_CAP_MAX_AMSDU;
190
191 /*
192 *Maximum length of AMPDU that the STA can receive.
193 *Length = 2 ^ (13 + max_ampdu_length_exp) - 1 (octets)
194 */
195 ht_cap->ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
196
197 /*Minimum MPDU start spacing , */
198 ht_cap->ampdu_density = IEEE80211_HT_MPDU_DENSITY_16;
199
200 ht_cap->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
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 (rtlpriv->dm.supp_phymode_switch) {
212
213 RT_TRACE(rtlpriv, COMP_INIT, DBG_EMERG,
214 "Support phy mode switch\n");
215
216 ht_cap->mcs.rx_mask[0] = 0xFF;
217 ht_cap->mcs.rx_mask[1] = 0xFF;
218 ht_cap->mcs.rx_mask[4] = 0x01;
219
220 ht_cap->mcs.rx_highest = cpu_to_le16(MAX_BIT_RATE_40MHZ_MCS15);
221 } else {
222 if (get_rf_type(rtlphy) == RF_1T2R ||
223 get_rf_type(rtlphy) == RF_2T2R) {
224 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG,
225 "1T2R or 2T2R\n");
226 ht_cap->mcs.rx_mask[0] = 0xFF;
227 ht_cap->mcs.rx_mask[1] = 0xFF;
228 ht_cap->mcs.rx_mask[4] = 0x01;
229
230 ht_cap->mcs.rx_highest =
231 cpu_to_le16(MAX_BIT_RATE_40MHZ_MCS15);
232 } else if (get_rf_type(rtlphy) == RF_1T1R) {
233 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG, "1T1R\n");
234
235 ht_cap->mcs.rx_mask[0] = 0xFF;
236 ht_cap->mcs.rx_mask[1] = 0x00;
237 ht_cap->mcs.rx_mask[4] = 0x01;
238
239 ht_cap->mcs.rx_highest =
240 cpu_to_le16(MAX_BIT_RATE_40MHZ_MCS7);
241 }
242 }
243 }
244
_rtl_init_mac80211(struct ieee80211_hw * hw)245 static void _rtl_init_mac80211(struct ieee80211_hw *hw)
246 {
247 struct rtl_priv *rtlpriv = rtl_priv(hw);
248 struct rtl_hal *rtlhal = rtl_hal(rtlpriv);
249 struct rtl_mac *rtlmac = rtl_mac(rtl_priv(hw));
250 struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw));
251 struct ieee80211_supported_band *sband;
252
253
254 if (rtlhal->macphymode == SINGLEMAC_SINGLEPHY && rtlhal->bandset ==
255 BAND_ON_BOTH) {
256 /* 1: 2.4 G bands */
257 /* <1> use mac->bands as mem for hw->wiphy->bands */
258 sband = &(rtlmac->bands[IEEE80211_BAND_2GHZ]);
259
260 /* <2> set hw->wiphy->bands[IEEE80211_BAND_2GHZ]
261 * to default value(1T1R) */
262 memcpy(&(rtlmac->bands[IEEE80211_BAND_2GHZ]), &rtl_band_2ghz,
263 sizeof(struct ieee80211_supported_band));
264
265 /* <3> init ht cap base on ant_num */
266 _rtl_init_hw_ht_capab(hw, &sband->ht_cap);
267
268 /* <4> set mac->sband to wiphy->sband */
269 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = sband;
270
271 /* 2: 5 G bands */
272 /* <1> use mac->bands as mem for hw->wiphy->bands */
273 sband = &(rtlmac->bands[IEEE80211_BAND_5GHZ]);
274
275 /* <2> set hw->wiphy->bands[IEEE80211_BAND_5GHZ]
276 * to default value(1T1R) */
277 memcpy(&(rtlmac->bands[IEEE80211_BAND_5GHZ]), &rtl_band_5ghz,
278 sizeof(struct ieee80211_supported_band));
279
280 /* <3> init ht cap base on ant_num */
281 _rtl_init_hw_ht_capab(hw, &sband->ht_cap);
282
283 /* <4> set mac->sband to wiphy->sband */
284 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = sband;
285 } else {
286 if (rtlhal->current_bandtype == BAND_ON_2_4G) {
287 /* <1> use mac->bands as mem for hw->wiphy->bands */
288 sband = &(rtlmac->bands[IEEE80211_BAND_2GHZ]);
289
290 /* <2> set hw->wiphy->bands[IEEE80211_BAND_2GHZ]
291 * to default value(1T1R) */
292 memcpy(&(rtlmac->bands[IEEE80211_BAND_2GHZ]),
293 &rtl_band_2ghz,
294 sizeof(struct ieee80211_supported_band));
295
296 /* <3> init ht cap base on ant_num */
297 _rtl_init_hw_ht_capab(hw, &sband->ht_cap);
298
299 /* <4> set mac->sband to wiphy->sband */
300 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = sband;
301 } else if (rtlhal->current_bandtype == BAND_ON_5G) {
302 /* <1> use mac->bands as mem for hw->wiphy->bands */
303 sband = &(rtlmac->bands[IEEE80211_BAND_5GHZ]);
304
305 /* <2> set hw->wiphy->bands[IEEE80211_BAND_5GHZ]
306 * to default value(1T1R) */
307 memcpy(&(rtlmac->bands[IEEE80211_BAND_5GHZ]),
308 &rtl_band_5ghz,
309 sizeof(struct ieee80211_supported_band));
310
311 /* <3> init ht cap base on ant_num */
312 _rtl_init_hw_ht_capab(hw, &sband->ht_cap);
313
314 /* <4> set mac->sband to wiphy->sband */
315 hw->wiphy->bands[IEEE80211_BAND_5GHZ] = sband;
316 } else {
317 RT_TRACE(rtlpriv, COMP_INIT, DBG_EMERG, "Err BAND %d\n",
318 rtlhal->current_bandtype);
319 }
320 }
321 /* <5> set hw caps */
322 hw->flags = IEEE80211_HW_SIGNAL_DBM |
323 IEEE80211_HW_RX_INCLUDES_FCS |
324 IEEE80211_HW_AMPDU_AGGREGATION |
325 IEEE80211_HW_CONNECTION_MONITOR |
326 /* IEEE80211_HW_SUPPORTS_CQM_RSSI | */
327 IEEE80211_HW_CONNECTION_MONITOR |
328 IEEE80211_HW_MFP_CAPABLE |
329 IEEE80211_HW_REPORTS_TX_ACK_STATUS | 0;
330
331 /* swlps or hwlps has been set in diff chip in init_sw_vars */
332 if (rtlpriv->psc.swctrl_lps)
333 hw->flags |= IEEE80211_HW_SUPPORTS_PS |
334 IEEE80211_HW_PS_NULLFUNC_STACK |
335 /* IEEE80211_HW_SUPPORTS_DYNAMIC_PS | */
336 0;
337
338 hw->wiphy->interface_modes =
339 BIT(NL80211_IFTYPE_AP) |
340 BIT(NL80211_IFTYPE_STATION) |
341 BIT(NL80211_IFTYPE_ADHOC) |
342 BIT(NL80211_IFTYPE_MESH_POINT) |
343 BIT(NL80211_IFTYPE_P2P_CLIENT) |
344 BIT(NL80211_IFTYPE_P2P_GO);
345
346 hw->wiphy->flags |= WIPHY_FLAG_IBSS_RSN;
347 hw->wiphy->rts_threshold = 2347;
348
349 hw->queues = AC_MAX;
350 hw->extra_tx_headroom = RTL_TX_HEADER_SIZE;
351
352 /* TODO: Correct this value for our hw */
353 /* TODO: define these hard code value */
354 hw->channel_change_time = 100;
355 hw->max_listen_interval = 10;
356 hw->max_rate_tries = 4;
357 /* hw->max_rates = 1; */
358 hw->sta_data_size = sizeof(struct rtl_sta_info);
359
360 /* <6> mac address */
361 if (is_valid_ether_addr(rtlefuse->dev_addr)) {
362 SET_IEEE80211_PERM_ADDR(hw, rtlefuse->dev_addr);
363 } else {
364 u8 rtlmac1[] = { 0x00, 0xe0, 0x4c, 0x81, 0x92, 0x00 };
365 get_random_bytes((rtlmac1 + (ETH_ALEN - 1)), 1);
366 SET_IEEE80211_PERM_ADDR(hw, rtlmac1);
367 }
368
369 }
370
_rtl_init_deferred_work(struct ieee80211_hw * hw)371 static void _rtl_init_deferred_work(struct ieee80211_hw *hw)
372 {
373 struct rtl_priv *rtlpriv = rtl_priv(hw);
374
375 /* <1> timer */
376 setup_timer(&rtlpriv->works.watchdog_timer,
377 rtl_watch_dog_timer_callback, (unsigned long)hw);
378 setup_timer(&rtlpriv->works.dualmac_easyconcurrent_retrytimer,
379 rtl_easy_concurrent_retrytimer_callback, (unsigned long)hw);
380
381 /* <2> work queue */
382 rtlpriv->works.hw = hw;
383 rtlpriv->works.rtl_wq = alloc_workqueue(rtlpriv->cfg->name, 0, 0);
384 INIT_DELAYED_WORK(&rtlpriv->works.watchdog_wq,
385 (void *)rtl_watchdog_wq_callback);
386 INIT_DELAYED_WORK(&rtlpriv->works.ips_nic_off_wq,
387 (void *)rtl_ips_nic_off_wq_callback);
388 INIT_DELAYED_WORK(&rtlpriv->works.ps_work,
389 (void *)rtl_swlps_wq_callback);
390 INIT_DELAYED_WORK(&rtlpriv->works.ps_rfon_wq,
391 (void *)rtl_swlps_rfon_wq_callback);
392 INIT_DELAYED_WORK(&rtlpriv->works.fwevt_wq,
393 (void *)rtl_fwevt_wq_callback);
394
395 }
396
rtl_deinit_deferred_work(struct ieee80211_hw * hw)397 void rtl_deinit_deferred_work(struct ieee80211_hw *hw)
398 {
399 struct rtl_priv *rtlpriv = rtl_priv(hw);
400
401 del_timer_sync(&rtlpriv->works.watchdog_timer);
402
403 cancel_delayed_work(&rtlpriv->works.watchdog_wq);
404 cancel_delayed_work(&rtlpriv->works.ips_nic_off_wq);
405 cancel_delayed_work(&rtlpriv->works.ps_work);
406 cancel_delayed_work(&rtlpriv->works.ps_rfon_wq);
407 cancel_delayed_work(&rtlpriv->works.fwevt_wq);
408 }
409
rtl_init_rfkill(struct ieee80211_hw * hw)410 void rtl_init_rfkill(struct ieee80211_hw *hw)
411 {
412 struct rtl_priv *rtlpriv = rtl_priv(hw);
413
414 bool radio_state;
415 bool blocked;
416 u8 valid = 0;
417
418 /*set init state to on */
419 rtlpriv->rfkill.rfkill_state = true;
420 wiphy_rfkill_set_hw_state(hw->wiphy, 0);
421
422 radio_state = rtlpriv->cfg->ops->radio_onoff_checking(hw, &valid);
423
424 if (valid) {
425 pr_info("wireless switch is %s\n",
426 rtlpriv->rfkill.rfkill_state ? "on" : "off");
427
428 rtlpriv->rfkill.rfkill_state = radio_state;
429
430 blocked = (rtlpriv->rfkill.rfkill_state == 1) ? 0 : 1;
431 wiphy_rfkill_set_hw_state(hw->wiphy, blocked);
432 }
433
434 wiphy_rfkill_start_polling(hw->wiphy);
435 }
436 EXPORT_SYMBOL(rtl_init_rfkill);
437
rtl_deinit_rfkill(struct ieee80211_hw * hw)438 void rtl_deinit_rfkill(struct ieee80211_hw *hw)
439 {
440 wiphy_rfkill_stop_polling(hw->wiphy);
441 }
442
rtl_init_core(struct ieee80211_hw * hw)443 int rtl_init_core(struct ieee80211_hw *hw)
444 {
445 struct rtl_priv *rtlpriv = rtl_priv(hw);
446 struct rtl_mac *rtlmac = rtl_mac(rtl_priv(hw));
447
448 /* <1> init mac80211 */
449 _rtl_init_mac80211(hw);
450 rtlmac->hw = hw;
451
452 /* <2> rate control register */
453 hw->rate_control_algorithm = "rtl_rc";
454
455 /*
456 * <3> init CRDA must come after init
457 * mac80211 hw in _rtl_init_mac80211.
458 */
459 if (rtl_regd_init(hw, rtl_reg_notifier)) {
460 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, "REGD init failed\n");
461 return 1;
462 }
463
464 /* <4> locks */
465 mutex_init(&rtlpriv->locks.conf_mutex);
466 mutex_init(&rtlpriv->locks.ps_mutex);
467 spin_lock_init(&rtlpriv->locks.ips_lock);
468 spin_lock_init(&rtlpriv->locks.irq_th_lock);
469 spin_lock_init(&rtlpriv->locks.irq_pci_lock);
470 spin_lock_init(&rtlpriv->locks.tx_lock);
471 spin_lock_init(&rtlpriv->locks.h2c_lock);
472 spin_lock_init(&rtlpriv->locks.rf_ps_lock);
473 spin_lock_init(&rtlpriv->locks.rf_lock);
474 spin_lock_init(&rtlpriv->locks.waitq_lock);
475 spin_lock_init(&rtlpriv->locks.entry_list_lock);
476 spin_lock_init(&rtlpriv->locks.fw_ps_lock);
477 spin_lock_init(&rtlpriv->locks.cck_and_rw_pagea_lock);
478 spin_lock_init(&rtlpriv->locks.check_sendpkt_lock);
479 spin_lock_init(&rtlpriv->locks.fw_ps_lock);
480 spin_lock_init(&rtlpriv->locks.lps_lock);
481
482 /* <5> init list */
483 INIT_LIST_HEAD(&rtlpriv->entry_list);
484
485 rtlmac->link_state = MAC80211_NOLINK;
486
487 /* <6> init deferred work */
488 _rtl_init_deferred_work(hw);
489
490 return 0;
491 }
492
rtl_deinit_core(struct ieee80211_hw * hw)493 void rtl_deinit_core(struct ieee80211_hw *hw)
494 {
495 }
496
rtl_init_rx_config(struct ieee80211_hw * hw)497 void rtl_init_rx_config(struct ieee80211_hw *hw)
498 {
499 struct rtl_priv *rtlpriv = rtl_priv(hw);
500 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
501
502 rtlpriv->cfg->ops->get_hw_reg(hw, HW_VAR_RCR, (u8 *) (&mac->rx_conf));
503 }
504
505 /*********************************************************
506 *
507 * tx information functions
508 *
509 *********************************************************/
_rtl_qurey_shortpreamble_mode(struct ieee80211_hw * hw,struct rtl_tcb_desc * tcb_desc,struct ieee80211_tx_info * info)510 static void _rtl_qurey_shortpreamble_mode(struct ieee80211_hw *hw,
511 struct rtl_tcb_desc *tcb_desc,
512 struct ieee80211_tx_info *info)
513 {
514 struct rtl_priv *rtlpriv = rtl_priv(hw);
515 u8 rate_flag = info->control.rates[0].flags;
516
517 tcb_desc->use_shortpreamble = false;
518
519 /* 1M can only use Long Preamble. 11B spec */
520 if (tcb_desc->hw_rate == rtlpriv->cfg->maps[RTL_RC_CCK_RATE1M])
521 return;
522 else if (rate_flag & IEEE80211_TX_RC_USE_SHORT_PREAMBLE)
523 tcb_desc->use_shortpreamble = true;
524
525 return;
526 }
527
_rtl_query_shortgi(struct ieee80211_hw * hw,struct ieee80211_sta * sta,struct rtl_tcb_desc * tcb_desc,struct ieee80211_tx_info * info)528 static void _rtl_query_shortgi(struct ieee80211_hw *hw,
529 struct ieee80211_sta *sta,
530 struct rtl_tcb_desc *tcb_desc,
531 struct ieee80211_tx_info *info)
532 {
533 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
534 u8 rate_flag = info->control.rates[0].flags;
535 u8 sgi_40 = 0, sgi_20 = 0, bw_40 = 0;
536 tcb_desc->use_shortgi = false;
537
538 if (sta == NULL)
539 return;
540
541 sgi_40 = sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_40;
542 sgi_20 = sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_20;
543
544 if (!(sta->ht_cap.ht_supported))
545 return;
546
547 if (!sgi_40 && !sgi_20)
548 return;
549
550 if (mac->opmode == NL80211_IFTYPE_STATION)
551 bw_40 = mac->bw_40;
552 else if (mac->opmode == NL80211_IFTYPE_AP ||
553 mac->opmode == NL80211_IFTYPE_ADHOC ||
554 mac->opmode == NL80211_IFTYPE_MESH_POINT)
555 bw_40 = sta->bandwidth >= IEEE80211_STA_RX_BW_40;
556
557 if (bw_40 && sgi_40)
558 tcb_desc->use_shortgi = true;
559 else if ((bw_40 == false) && sgi_20)
560 tcb_desc->use_shortgi = true;
561
562 if (!(rate_flag & IEEE80211_TX_RC_SHORT_GI))
563 tcb_desc->use_shortgi = false;
564 }
565
_rtl_query_protection_mode(struct ieee80211_hw * hw,struct rtl_tcb_desc * tcb_desc,struct ieee80211_tx_info * info)566 static void _rtl_query_protection_mode(struct ieee80211_hw *hw,
567 struct rtl_tcb_desc *tcb_desc,
568 struct ieee80211_tx_info *info)
569 {
570 struct rtl_priv *rtlpriv = rtl_priv(hw);
571 u8 rate_flag = info->control.rates[0].flags;
572
573 /* Common Settings */
574 tcb_desc->rts_stbc = false;
575 tcb_desc->cts_enable = false;
576 tcb_desc->rts_sc = 0;
577 tcb_desc->rts_bw = false;
578 tcb_desc->rts_use_shortpreamble = false;
579 tcb_desc->rts_use_shortgi = false;
580
581 if (rate_flag & IEEE80211_TX_RC_USE_CTS_PROTECT) {
582 /* Use CTS-to-SELF in protection mode. */
583 tcb_desc->rts_enable = true;
584 tcb_desc->cts_enable = true;
585 tcb_desc->rts_rate = rtlpriv->cfg->maps[RTL_RC_OFDM_RATE24M];
586 } else if (rate_flag & IEEE80211_TX_RC_USE_RTS_CTS) {
587 /* Use RTS-CTS in protection mode. */
588 tcb_desc->rts_enable = true;
589 tcb_desc->rts_rate = rtlpriv->cfg->maps[RTL_RC_OFDM_RATE24M];
590 }
591 }
592
_rtl_txrate_selectmode(struct ieee80211_hw * hw,struct ieee80211_sta * sta,struct rtl_tcb_desc * tcb_desc)593 static void _rtl_txrate_selectmode(struct ieee80211_hw *hw,
594 struct ieee80211_sta *sta,
595 struct rtl_tcb_desc *tcb_desc)
596 {
597 struct rtl_priv *rtlpriv = rtl_priv(hw);
598 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
599 struct rtl_sta_info *sta_entry = NULL;
600 u8 ratr_index = 7;
601
602 if (sta) {
603 sta_entry = (struct rtl_sta_info *) sta->drv_priv;
604 ratr_index = sta_entry->ratr_index;
605 }
606 if (!tcb_desc->disable_ratefallback || !tcb_desc->use_driver_rate) {
607 if (mac->opmode == NL80211_IFTYPE_STATION) {
608 tcb_desc->ratr_index = 0;
609 } else if (mac->opmode == NL80211_IFTYPE_ADHOC ||
610 mac->opmode == NL80211_IFTYPE_MESH_POINT) {
611 if (tcb_desc->multicast || tcb_desc->broadcast) {
612 tcb_desc->hw_rate =
613 rtlpriv->cfg->maps[RTL_RC_CCK_RATE2M];
614 tcb_desc->use_driver_rate = 1;
615 tcb_desc->ratr_index = RATR_INX_WIRELESS_MC;
616 } else {
617 tcb_desc->ratr_index = ratr_index;
618 }
619 } else if (mac->opmode == NL80211_IFTYPE_AP) {
620 tcb_desc->ratr_index = ratr_index;
621 }
622 }
623
624 if (rtlpriv->dm.useramask) {
625 tcb_desc->ratr_index = ratr_index;
626 /* TODO we will differentiate adhoc and station future */
627 if (mac->opmode == NL80211_IFTYPE_STATION ||
628 mac->opmode == NL80211_IFTYPE_MESH_POINT) {
629 tcb_desc->mac_id = 0;
630
631 if (mac->mode == WIRELESS_MODE_N_24G)
632 tcb_desc->ratr_index = RATR_INX_WIRELESS_NGB;
633 else if (mac->mode == WIRELESS_MODE_N_5G)
634 tcb_desc->ratr_index = RATR_INX_WIRELESS_NG;
635 else if (mac->mode & WIRELESS_MODE_G)
636 tcb_desc->ratr_index = RATR_INX_WIRELESS_GB;
637 else if (mac->mode & WIRELESS_MODE_B)
638 tcb_desc->ratr_index = RATR_INX_WIRELESS_B;
639 else if (mac->mode & WIRELESS_MODE_A)
640 tcb_desc->ratr_index = RATR_INX_WIRELESS_G;
641 } else if (mac->opmode == NL80211_IFTYPE_AP ||
642 mac->opmode == NL80211_IFTYPE_ADHOC) {
643 if (NULL != sta) {
644 if (sta->aid > 0)
645 tcb_desc->mac_id = sta->aid + 1;
646 else
647 tcb_desc->mac_id = 1;
648 } else {
649 tcb_desc->mac_id = 0;
650 }
651 }
652 }
653 }
654
_rtl_query_bandwidth_mode(struct ieee80211_hw * hw,struct ieee80211_sta * sta,struct rtl_tcb_desc * tcb_desc)655 static void _rtl_query_bandwidth_mode(struct ieee80211_hw *hw,
656 struct ieee80211_sta *sta,
657 struct rtl_tcb_desc *tcb_desc)
658 {
659 struct rtl_priv *rtlpriv = rtl_priv(hw);
660 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
661
662 tcb_desc->packet_bw = false;
663 if (!sta)
664 return;
665 if (mac->opmode == NL80211_IFTYPE_AP ||
666 mac->opmode == NL80211_IFTYPE_ADHOC ||
667 mac->opmode == NL80211_IFTYPE_MESH_POINT) {
668 if (sta->bandwidth == IEEE80211_STA_RX_BW_20)
669 return;
670 } else if (mac->opmode == NL80211_IFTYPE_STATION) {
671 if (!mac->bw_40 || !(sta->ht_cap.ht_supported))
672 return;
673 }
674 if (tcb_desc->multicast || tcb_desc->broadcast)
675 return;
676
677 /*use legency rate, shall use 20MHz */
678 if (tcb_desc->hw_rate <= rtlpriv->cfg->maps[RTL_RC_OFDM_RATE54M])
679 return;
680
681 tcb_desc->packet_bw = true;
682 }
683
_rtl_get_highest_n_rate(struct ieee80211_hw * hw)684 static u8 _rtl_get_highest_n_rate(struct ieee80211_hw *hw)
685 {
686 struct rtl_priv *rtlpriv = rtl_priv(hw);
687 struct rtl_phy *rtlphy = &(rtlpriv->phy);
688 u8 hw_rate;
689
690 if (get_rf_type(rtlphy) == RF_2T2R)
691 hw_rate = rtlpriv->cfg->maps[RTL_RC_HT_RATEMCS15];
692 else
693 hw_rate = rtlpriv->cfg->maps[RTL_RC_HT_RATEMCS7];
694
695 return hw_rate;
696 }
697
698 /* mac80211's rate_idx is like this:
699 *
700 * 2.4G band:rx_status->band == IEEE80211_BAND_2GHZ
701 *
702 * B/G rate:
703 * (rx_status->flag & RX_FLAG_HT) = 0,
704 * DESC92_RATE1M-->DESC92_RATE54M ==> idx is 0-->11,
705 *
706 * N rate:
707 * (rx_status->flag & RX_FLAG_HT) = 1,
708 * DESC92_RATEMCS0-->DESC92_RATEMCS15 ==> idx is 0-->15
709 *
710 * 5G band:rx_status->band == IEEE80211_BAND_5GHZ
711 * A rate:
712 * (rx_status->flag & RX_FLAG_HT) = 0,
713 * DESC92_RATE6M-->DESC92_RATE54M ==> idx is 0-->7,
714 *
715 * N rate:
716 * (rx_status->flag & RX_FLAG_HT) = 1,
717 * DESC92_RATEMCS0-->DESC92_RATEMCS15 ==> idx is 0-->15
718 */
rtlwifi_rate_mapping(struct ieee80211_hw * hw,bool isht,u8 desc_rate,bool first_ampdu)719 int rtlwifi_rate_mapping(struct ieee80211_hw *hw,
720 bool isht, u8 desc_rate, bool first_ampdu)
721 {
722 int rate_idx;
723
724 if (false == isht) {
725 if (IEEE80211_BAND_2GHZ == hw->conf.chandef.chan->band) {
726 switch (desc_rate) {
727 case DESC92_RATE1M:
728 rate_idx = 0;
729 break;
730 case DESC92_RATE2M:
731 rate_idx = 1;
732 break;
733 case DESC92_RATE5_5M:
734 rate_idx = 2;
735 break;
736 case DESC92_RATE11M:
737 rate_idx = 3;
738 break;
739 case DESC92_RATE6M:
740 rate_idx = 4;
741 break;
742 case DESC92_RATE9M:
743 rate_idx = 5;
744 break;
745 case DESC92_RATE12M:
746 rate_idx = 6;
747 break;
748 case DESC92_RATE18M:
749 rate_idx = 7;
750 break;
751 case DESC92_RATE24M:
752 rate_idx = 8;
753 break;
754 case DESC92_RATE36M:
755 rate_idx = 9;
756 break;
757 case DESC92_RATE48M:
758 rate_idx = 10;
759 break;
760 case DESC92_RATE54M:
761 rate_idx = 11;
762 break;
763 default:
764 rate_idx = 0;
765 break;
766 }
767 } else {
768 switch (desc_rate) {
769 case DESC92_RATE6M:
770 rate_idx = 0;
771 break;
772 case DESC92_RATE9M:
773 rate_idx = 1;
774 break;
775 case DESC92_RATE12M:
776 rate_idx = 2;
777 break;
778 case DESC92_RATE18M:
779 rate_idx = 3;
780 break;
781 case DESC92_RATE24M:
782 rate_idx = 4;
783 break;
784 case DESC92_RATE36M:
785 rate_idx = 5;
786 break;
787 case DESC92_RATE48M:
788 rate_idx = 6;
789 break;
790 case DESC92_RATE54M:
791 rate_idx = 7;
792 break;
793 default:
794 rate_idx = 0;
795 break;
796 }
797 }
798
799 } else {
800
801 switch (desc_rate) {
802 case DESC92_RATEMCS0:
803 rate_idx = 0;
804 break;
805 case DESC92_RATEMCS1:
806 rate_idx = 1;
807 break;
808 case DESC92_RATEMCS2:
809 rate_idx = 2;
810 break;
811 case DESC92_RATEMCS3:
812 rate_idx = 3;
813 break;
814 case DESC92_RATEMCS4:
815 rate_idx = 4;
816 break;
817 case DESC92_RATEMCS5:
818 rate_idx = 5;
819 break;
820 case DESC92_RATEMCS6:
821 rate_idx = 6;
822 break;
823 case DESC92_RATEMCS7:
824 rate_idx = 7;
825 break;
826 case DESC92_RATEMCS8:
827 rate_idx = 8;
828 break;
829 case DESC92_RATEMCS9:
830 rate_idx = 9;
831 break;
832 case DESC92_RATEMCS10:
833 rate_idx = 10;
834 break;
835 case DESC92_RATEMCS11:
836 rate_idx = 11;
837 break;
838 case DESC92_RATEMCS12:
839 rate_idx = 12;
840 break;
841 case DESC92_RATEMCS13:
842 rate_idx = 13;
843 break;
844 case DESC92_RATEMCS14:
845 rate_idx = 14;
846 break;
847 case DESC92_RATEMCS15:
848 rate_idx = 15;
849 break;
850 default:
851 rate_idx = 0;
852 break;
853 }
854 }
855 return rate_idx;
856 }
857 EXPORT_SYMBOL(rtlwifi_rate_mapping);
858
rtl_tx_mgmt_proc(struct ieee80211_hw * hw,struct sk_buff * skb)859 bool rtl_tx_mgmt_proc(struct ieee80211_hw *hw, struct sk_buff *skb)
860 {
861 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
862 struct rtl_priv *rtlpriv = rtl_priv(hw);
863 __le16 fc = rtl_get_fc(skb);
864
865 if (rtlpriv->dm.supp_phymode_switch &&
866 mac->link_state < MAC80211_LINKED &&
867 (ieee80211_is_auth(fc) || ieee80211_is_probe_req(fc))) {
868 if (rtlpriv->cfg->ops->chk_switch_dmdp)
869 rtlpriv->cfg->ops->chk_switch_dmdp(hw);
870 }
871 if (ieee80211_is_auth(fc)) {
872 RT_TRACE(rtlpriv, COMP_SEND, DBG_DMESG, "MAC80211_LINKING\n");
873 rtl_ips_nic_on(hw);
874
875 mac->link_state = MAC80211_LINKING;
876 /* Dual mac */
877 rtlpriv->phy.need_iqk = true;
878 }
879
880 return true;
881 }
882
rtl_get_tcb_desc(struct ieee80211_hw * hw,struct ieee80211_tx_info * info,struct ieee80211_sta * sta,struct sk_buff * skb,struct rtl_tcb_desc * tcb_desc)883 void rtl_get_tcb_desc(struct ieee80211_hw *hw,
884 struct ieee80211_tx_info *info,
885 struct ieee80211_sta *sta,
886 struct sk_buff *skb, struct rtl_tcb_desc *tcb_desc)
887 {
888 struct rtl_priv *rtlpriv = rtl_priv(hw);
889 struct rtl_mac *rtlmac = rtl_mac(rtl_priv(hw));
890 struct ieee80211_hdr *hdr = rtl_get_hdr(skb);
891 struct ieee80211_rate *txrate;
892 __le16 fc = hdr->frame_control;
893
894 txrate = ieee80211_get_tx_rate(hw, info);
895 if (txrate)
896 tcb_desc->hw_rate = txrate->hw_value;
897 else
898 tcb_desc->hw_rate = 0;
899
900 if (ieee80211_is_data(fc)) {
901 /*
902 *we set data rate INX 0
903 *in rtl_rc.c if skb is special data or
904 *mgt which need low data rate.
905 */
906
907 /*
908 *So tcb_desc->hw_rate is just used for
909 *special data and mgt frames
910 */
911 if (info->control.rates[0].idx == 0 ||
912 ieee80211_is_nullfunc(fc)) {
913 tcb_desc->use_driver_rate = true;
914 tcb_desc->ratr_index = RATR_INX_WIRELESS_MC;
915
916 tcb_desc->disable_ratefallback = 1;
917 } else {
918 /*
919 *because hw will nerver use hw_rate
920 *when tcb_desc->use_driver_rate = false
921 *so we never set highest N rate here,
922 *and N rate will all be controlled by FW
923 *when tcb_desc->use_driver_rate = false
924 */
925 if (sta && (sta->ht_cap.ht_supported)) {
926 tcb_desc->hw_rate = _rtl_get_highest_n_rate(hw);
927 } else {
928 if (rtlmac->mode == WIRELESS_MODE_B) {
929 tcb_desc->hw_rate =
930 rtlpriv->cfg->maps[RTL_RC_CCK_RATE11M];
931 } else {
932 tcb_desc->hw_rate =
933 rtlpriv->cfg->maps[RTL_RC_OFDM_RATE54M];
934 }
935 }
936 }
937
938 if (is_multicast_ether_addr(ieee80211_get_DA(hdr)))
939 tcb_desc->multicast = 1;
940 else if (is_broadcast_ether_addr(ieee80211_get_DA(hdr)))
941 tcb_desc->broadcast = 1;
942
943 _rtl_txrate_selectmode(hw, sta, tcb_desc);
944 _rtl_query_bandwidth_mode(hw, sta, tcb_desc);
945 _rtl_qurey_shortpreamble_mode(hw, tcb_desc, info);
946 _rtl_query_shortgi(hw, sta, tcb_desc, info);
947 _rtl_query_protection_mode(hw, tcb_desc, info);
948 } else {
949 tcb_desc->use_driver_rate = true;
950 tcb_desc->ratr_index = RATR_INX_WIRELESS_MC;
951 tcb_desc->disable_ratefallback = 1;
952 tcb_desc->mac_id = 0;
953 tcb_desc->packet_bw = false;
954 }
955 }
956 EXPORT_SYMBOL(rtl_get_tcb_desc);
957
addbareq_rx(struct ieee80211_hw * hw,struct sk_buff * skb)958 static bool addbareq_rx(struct ieee80211_hw *hw, struct sk_buff *skb)
959 {
960 struct rtl_priv *rtlpriv = rtl_priv(hw);
961 struct ieee80211_sta *sta = NULL;
962 struct ieee80211_hdr *hdr = rtl_get_hdr(skb);
963 struct rtl_sta_info *sta_entry = NULL;
964 struct ieee80211_mgmt *mgmt = (void *)skb->data;
965 u16 capab = 0, tid = 0;
966 struct rtl_tid_data *tid_data;
967 struct sk_buff *skb_delba = NULL;
968 struct ieee80211_rx_status rx_status = { 0 };
969
970 rcu_read_lock();
971 sta = rtl_find_sta(hw, hdr->addr3);
972 if (sta == NULL) {
973 RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV), DBG_EMERG,
974 "sta is NULL\n");
975 rcu_read_unlock();
976 return true;
977 }
978
979 sta_entry = (struct rtl_sta_info *)sta->drv_priv;
980 if (!sta_entry) {
981 rcu_read_unlock();
982 return true;
983 }
984 capab = le16_to_cpu(mgmt->u.action.u.addba_req.capab);
985 tid = (capab & IEEE80211_ADDBA_PARAM_TID_MASK) >> 2;
986 tid_data = &sta_entry->tids[tid];
987 if (tid_data->agg.rx_agg_state == RTL_RX_AGG_START) {
988 skb_delba = rtl_make_del_ba(hw, hdr->addr2, hdr->addr3, tid);
989 if (skb_delba) {
990 rx_status.freq = hw->conf.chandef.chan->center_freq;
991 rx_status.band = hw->conf.chandef.chan->band;
992 rx_status.flag |= RX_FLAG_DECRYPTED;
993 rx_status.flag |= RX_FLAG_MACTIME_END;
994 rx_status.rate_idx = 0;
995 rx_status.signal = 50 + 10;
996 memcpy(IEEE80211_SKB_RXCB(skb_delba), &rx_status,
997 sizeof(rx_status));
998 RT_PRINT_DATA(rtlpriv, COMP_INIT, DBG_DMESG,
999 "fake del\n", skb_delba->data,
1000 skb_delba->len);
1001 ieee80211_rx_irqsafe(hw, skb_delba);
1002 }
1003 }
1004 rcu_read_unlock();
1005 return false;
1006 }
1007
rtl_action_proc(struct ieee80211_hw * hw,struct sk_buff * skb,u8 is_tx)1008 bool rtl_action_proc(struct ieee80211_hw *hw, struct sk_buff *skb, u8 is_tx)
1009 {
1010 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
1011 struct ieee80211_hdr *hdr = rtl_get_hdr(skb);
1012 struct rtl_priv *rtlpriv = rtl_priv(hw);
1013 __le16 fc = hdr->frame_control;
1014 u8 *act = (u8 *)skb->data + MAC80211_3ADDR_LEN;
1015 u8 category;
1016
1017 if (!ieee80211_is_action(fc))
1018 return true;
1019
1020 category = *act;
1021 act++;
1022 switch (category) {
1023 case ACT_CAT_BA:
1024 switch (*act) {
1025 case ACT_ADDBAREQ:
1026 if (mac->act_scanning)
1027 return false;
1028
1029 RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV), DBG_DMESG,
1030 "%s ACT_ADDBAREQ From :%pM\n",
1031 is_tx ? "Tx" : "Rx", hdr->addr2);
1032 RT_PRINT_DATA(rtlpriv, COMP_INIT, DBG_DMESG, "req\n",
1033 skb->data, skb->len);
1034 if (!is_tx)
1035 if (addbareq_rx(hw, skb))
1036 return true;
1037 break;
1038 case ACT_ADDBARSP:
1039 RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV), DBG_DMESG,
1040 "%s ACT_ADDBARSP From :%pM\n",
1041 is_tx ? "Tx" : "Rx", hdr->addr2);
1042 break;
1043 case ACT_DELBA:
1044 RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV), DBG_DMESG,
1045 "ACT_ADDBADEL From :%pM\n", hdr->addr2);
1046 break;
1047 }
1048 break;
1049 default:
1050 break;
1051 }
1052
1053 return true;
1054 }
1055
1056 /*should call before software enc*/
rtl_is_special_data(struct ieee80211_hw * hw,struct sk_buff * skb,u8 is_tx)1057 u8 rtl_is_special_data(struct ieee80211_hw *hw, struct sk_buff *skb, u8 is_tx)
1058 {
1059 struct rtl_priv *rtlpriv = rtl_priv(hw);
1060 struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
1061 __le16 fc = rtl_get_fc(skb);
1062 u16 ether_type;
1063 u8 mac_hdr_len = ieee80211_get_hdrlen_from_skb(skb);
1064 const struct iphdr *ip;
1065
1066 if (!ieee80211_is_data(fc))
1067 return false;
1068
1069
1070 ip = (struct iphdr *)((u8 *) skb->data + mac_hdr_len +
1071 SNAP_SIZE + PROTOC_TYPE_SIZE);
1072 ether_type = *(u16 *) ((u8 *) skb->data + mac_hdr_len + SNAP_SIZE);
1073 /* ether_type = ntohs(ether_type); */
1074
1075 if (ETH_P_IP == ether_type) {
1076 if (IPPROTO_UDP == ip->protocol) {
1077 struct udphdr *udp = (struct udphdr *)((u8 *) ip +
1078 (ip->ihl << 2));
1079 if (((((u8 *) udp)[1] == 68) &&
1080 (((u8 *) udp)[3] == 67)) ||
1081 ((((u8 *) udp)[1] == 67) &&
1082 (((u8 *) udp)[3] == 68))) {
1083 /*
1084 * 68 : UDP BOOTP client
1085 * 67 : UDP BOOTP server
1086 */
1087 RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV),
1088 DBG_DMESG, "dhcp %s !!\n",
1089 is_tx ? "Tx" : "Rx");
1090
1091 if (is_tx) {
1092 rtlpriv->enter_ps = false;
1093 schedule_work(&rtlpriv->
1094 works.lps_change_work);
1095 ppsc->last_delaylps_stamp_jiffies =
1096 jiffies;
1097 }
1098
1099 return true;
1100 }
1101 }
1102 } else if (ETH_P_ARP == ether_type) {
1103 if (is_tx) {
1104 rtlpriv->enter_ps = false;
1105 schedule_work(&rtlpriv->works.lps_change_work);
1106 ppsc->last_delaylps_stamp_jiffies = jiffies;
1107 }
1108
1109 return true;
1110 } else if (ETH_P_PAE == ether_type) {
1111 RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV), DBG_DMESG,
1112 "802.1X %s EAPOL pkt!!\n", is_tx ? "Tx" : "Rx");
1113
1114 if (is_tx) {
1115 rtlpriv->enter_ps = false;
1116 schedule_work(&rtlpriv->works.lps_change_work);
1117 ppsc->last_delaylps_stamp_jiffies = jiffies;
1118 }
1119
1120 return true;
1121 } else if (ETH_P_IPV6 == ether_type) {
1122 /* IPv6 */
1123 return true;
1124 }
1125
1126 return false;
1127 }
1128
1129 /*********************************************************
1130 *
1131 * functions called by core.c
1132 *
1133 *********************************************************/
rtl_tx_agg_start(struct ieee80211_hw * hw,struct ieee80211_sta * sta,u16 tid,u16 * ssn)1134 int rtl_tx_agg_start(struct ieee80211_hw *hw,
1135 struct ieee80211_sta *sta, u16 tid, u16 *ssn)
1136 {
1137 struct rtl_priv *rtlpriv = rtl_priv(hw);
1138 struct rtl_tid_data *tid_data;
1139 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
1140 struct rtl_sta_info *sta_entry = NULL;
1141
1142 if (sta == NULL)
1143 return -EINVAL;
1144
1145 if (unlikely(tid >= MAX_TID_COUNT))
1146 return -EINVAL;
1147
1148 sta_entry = (struct rtl_sta_info *)sta->drv_priv;
1149 if (!sta_entry)
1150 return -ENXIO;
1151 tid_data = &sta_entry->tids[tid];
1152
1153 RT_TRACE(rtlpriv, COMP_SEND, DBG_DMESG, "on ra = %pM tid = %d seq:%d\n",
1154 sta->addr, tid, tid_data->seq_number);
1155
1156 *ssn = tid_data->seq_number;
1157 tid_data->agg.agg_state = RTL_AGG_START;
1158
1159 ieee80211_start_tx_ba_cb_irqsafe(mac->vif, sta->addr, tid);
1160
1161 return 0;
1162 }
1163
rtl_tx_agg_stop(struct ieee80211_hw * hw,struct ieee80211_sta * sta,u16 tid)1164 int rtl_tx_agg_stop(struct ieee80211_hw *hw,
1165 struct ieee80211_sta *sta, u16 tid)
1166 {
1167 struct rtl_priv *rtlpriv = rtl_priv(hw);
1168 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
1169 struct rtl_sta_info *sta_entry = NULL;
1170
1171 if (sta == NULL)
1172 return -EINVAL;
1173
1174 if (!sta->addr) {
1175 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, "ra = NULL\n");
1176 return -EINVAL;
1177 }
1178
1179 RT_TRACE(rtlpriv, COMP_SEND, DBG_DMESG, "on ra = %pM tid = %d\n",
1180 sta->addr, tid);
1181
1182 if (unlikely(tid >= MAX_TID_COUNT))
1183 return -EINVAL;
1184
1185 sta_entry = (struct rtl_sta_info *)sta->drv_priv;
1186 sta_entry->tids[tid].agg.agg_state = RTL_AGG_STOP;
1187
1188 ieee80211_stop_tx_ba_cb_irqsafe(mac->vif, sta->addr, tid);
1189
1190 return 0;
1191 }
1192
rtl_rx_agg_start(struct ieee80211_hw * hw,struct ieee80211_sta * sta,u16 tid)1193 int rtl_rx_agg_start(struct ieee80211_hw *hw,
1194 struct ieee80211_sta *sta, u16 tid)
1195 {
1196 struct rtl_priv *rtlpriv = rtl_priv(hw);
1197 struct rtl_tid_data *tid_data;
1198 struct rtl_sta_info *sta_entry = NULL;
1199
1200 if (sta == NULL)
1201 return -EINVAL;
1202
1203 if (unlikely(tid >= MAX_TID_COUNT))
1204 return -EINVAL;
1205
1206 sta_entry = (struct rtl_sta_info *)sta->drv_priv;
1207 if (!sta_entry)
1208 return -ENXIO;
1209 tid_data = &sta_entry->tids[tid];
1210
1211 RT_TRACE(rtlpriv, COMP_RECV, DBG_DMESG,
1212 "on ra = %pM tid = %d seq:%d\n", sta->addr, tid,
1213 tid_data->seq_number);
1214
1215 tid_data->agg.rx_agg_state = RTL_RX_AGG_START;
1216 return 0;
1217 }
1218
rtl_rx_agg_stop(struct ieee80211_hw * hw,struct ieee80211_sta * sta,u16 tid)1219 int rtl_rx_agg_stop(struct ieee80211_hw *hw,
1220 struct ieee80211_sta *sta, u16 tid)
1221 {
1222 struct rtl_priv *rtlpriv = rtl_priv(hw);
1223 struct rtl_sta_info *sta_entry = NULL;
1224
1225 if (sta == NULL)
1226 return -EINVAL;
1227
1228 if (!sta->addr) {
1229 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, "ra = NULL\n");
1230 return -EINVAL;
1231 }
1232
1233 RT_TRACE(rtlpriv, COMP_SEND, DBG_DMESG,
1234 "on ra = %pM tid = %d\n", sta->addr, tid);
1235
1236 if (unlikely(tid >= MAX_TID_COUNT))
1237 return -EINVAL;
1238
1239 sta_entry = (struct rtl_sta_info *)sta->drv_priv;
1240 sta_entry->tids[tid].agg.rx_agg_state = RTL_RX_AGG_STOP;
1241
1242 return 0;
1243 }
1244
rtl_tx_agg_oper(struct ieee80211_hw * hw,struct ieee80211_sta * sta,u16 tid)1245 int rtl_tx_agg_oper(struct ieee80211_hw *hw,
1246 struct ieee80211_sta *sta, u16 tid)
1247 {
1248 struct rtl_priv *rtlpriv = rtl_priv(hw);
1249 struct rtl_sta_info *sta_entry = NULL;
1250
1251 if (sta == NULL)
1252 return -EINVAL;
1253
1254 if (!sta->addr) {
1255 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, "ra = NULL\n");
1256 return -EINVAL;
1257 }
1258
1259 RT_TRACE(rtlpriv, COMP_SEND, DBG_DMESG, "on ra = %pM tid = %d\n",
1260 sta->addr, tid);
1261
1262 if (unlikely(tid >= MAX_TID_COUNT))
1263 return -EINVAL;
1264
1265 sta_entry = (struct rtl_sta_info *)sta->drv_priv;
1266 sta_entry->tids[tid].agg.agg_state = RTL_AGG_OPERATIONAL;
1267
1268 return 0;
1269 }
1270
1271 /*********************************************************
1272 *
1273 * wq & timer callback functions
1274 *
1275 *********************************************************/
1276 /* this function is used for roaming */
rtl_beacon_statistic(struct ieee80211_hw * hw,struct sk_buff * skb)1277 void rtl_beacon_statistic(struct ieee80211_hw *hw, struct sk_buff *skb)
1278 {
1279 struct rtl_priv *rtlpriv = rtl_priv(hw);
1280 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
1281
1282 if (rtlpriv->mac80211.opmode != NL80211_IFTYPE_STATION)
1283 return;
1284
1285 if (rtlpriv->mac80211.link_state < MAC80211_LINKED)
1286 return;
1287
1288 /* check if this really is a beacon */
1289 if (!ieee80211_is_beacon(hdr->frame_control) &&
1290 !ieee80211_is_probe_resp(hdr->frame_control))
1291 return;
1292
1293 /* min. beacon length + FCS_LEN */
1294 if (skb->len <= 40 + FCS_LEN)
1295 return;
1296
1297 /* and only beacons from the associated BSSID, please */
1298 if (compare_ether_addr(hdr->addr3, rtlpriv->mac80211.bssid))
1299 return;
1300
1301 rtlpriv->link_info.bcn_rx_inperiod++;
1302 }
1303
rtl_watchdog_wq_callback(void * data)1304 void rtl_watchdog_wq_callback(void *data)
1305 {
1306 struct rtl_works *rtlworks = container_of_dwork_rtl(data,
1307 struct rtl_works,
1308 watchdog_wq);
1309 struct ieee80211_hw *hw = rtlworks->hw;
1310 struct rtl_priv *rtlpriv = rtl_priv(hw);
1311 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
1312 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
1313 bool busytraffic = false;
1314 bool tx_busy_traffic = false;
1315 bool rx_busy_traffic = false;
1316 bool higher_busytraffic = false;
1317 bool higher_busyrxtraffic = false;
1318 u8 idx, tid;
1319 u32 rx_cnt_inp4eriod = 0;
1320 u32 tx_cnt_inp4eriod = 0;
1321 u32 aver_rx_cnt_inperiod = 0;
1322 u32 aver_tx_cnt_inperiod = 0;
1323 u32 aver_tidtx_inperiod[MAX_TID_COUNT] = {0};
1324 u32 tidtx_inp4eriod[MAX_TID_COUNT] = {0};
1325
1326 if (is_hal_stop(rtlhal))
1327 return;
1328
1329 /* <1> Determine if action frame is allowed */
1330 if (mac->link_state > MAC80211_NOLINK) {
1331 if (mac->cnt_after_linked < 20)
1332 mac->cnt_after_linked++;
1333 } else {
1334 mac->cnt_after_linked = 0;
1335 }
1336
1337 /*
1338 *<2> to check if traffic busy, if
1339 * busytraffic we don't change channel
1340 */
1341 if (mac->link_state >= MAC80211_LINKED) {
1342
1343 /* (1) get aver_rx_cnt_inperiod & aver_tx_cnt_inperiod */
1344 for (idx = 0; idx <= 2; idx++) {
1345 rtlpriv->link_info.num_rx_in4period[idx] =
1346 rtlpriv->link_info.num_rx_in4period[idx + 1];
1347 rtlpriv->link_info.num_tx_in4period[idx] =
1348 rtlpriv->link_info.num_tx_in4period[idx + 1];
1349 }
1350 rtlpriv->link_info.num_rx_in4period[3] =
1351 rtlpriv->link_info.num_rx_inperiod;
1352 rtlpriv->link_info.num_tx_in4period[3] =
1353 rtlpriv->link_info.num_tx_inperiod;
1354 for (idx = 0; idx <= 3; idx++) {
1355 rx_cnt_inp4eriod +=
1356 rtlpriv->link_info.num_rx_in4period[idx];
1357 tx_cnt_inp4eriod +=
1358 rtlpriv->link_info.num_tx_in4period[idx];
1359 }
1360 aver_rx_cnt_inperiod = rx_cnt_inp4eriod / 4;
1361 aver_tx_cnt_inperiod = tx_cnt_inp4eriod / 4;
1362
1363 /* (2) check traffic busy */
1364 if (aver_rx_cnt_inperiod > 100 || aver_tx_cnt_inperiod > 100) {
1365 busytraffic = true;
1366 if (aver_rx_cnt_inperiod > aver_tx_cnt_inperiod)
1367 rx_busy_traffic = true;
1368 else
1369 tx_busy_traffic = false;
1370 }
1371
1372 /* Higher Tx/Rx data. */
1373 if (aver_rx_cnt_inperiod > 4000 ||
1374 aver_tx_cnt_inperiod > 4000) {
1375 higher_busytraffic = true;
1376
1377 /* Extremely high Rx data. */
1378 if (aver_rx_cnt_inperiod > 5000)
1379 higher_busyrxtraffic = true;
1380 }
1381
1382 /* check every tid's tx traffic */
1383 for (tid = 0; tid <= 7; tid++) {
1384 for (idx = 0; idx <= 2; idx++)
1385 rtlpriv->link_info.tidtx_in4period[tid][idx] =
1386 rtlpriv->link_info.tidtx_in4period[tid]
1387 [idx + 1];
1388 rtlpriv->link_info.tidtx_in4period[tid][3] =
1389 rtlpriv->link_info.tidtx_inperiod[tid];
1390
1391 for (idx = 0; idx <= 3; idx++)
1392 tidtx_inp4eriod[tid] +=
1393 rtlpriv->link_info.tidtx_in4period[tid][idx];
1394 aver_tidtx_inperiod[tid] = tidtx_inp4eriod[tid] / 4;
1395 if (aver_tidtx_inperiod[tid] > 5000)
1396 rtlpriv->link_info.higher_busytxtraffic[tid] =
1397 true;
1398 else
1399 rtlpriv->link_info.higher_busytxtraffic[tid] =
1400 false;
1401 }
1402
1403 if (((rtlpriv->link_info.num_rx_inperiod +
1404 rtlpriv->link_info.num_tx_inperiod) > 8) ||
1405 (rtlpriv->link_info.num_rx_inperiod > 2))
1406 rtlpriv->enter_ps = true;
1407 else
1408 rtlpriv->enter_ps = false;
1409
1410 /* LeisurePS only work in infra mode. */
1411 schedule_work(&rtlpriv->works.lps_change_work);
1412 }
1413
1414 rtlpriv->link_info.num_rx_inperiod = 0;
1415 rtlpriv->link_info.num_tx_inperiod = 0;
1416 for (tid = 0; tid <= 7; tid++)
1417 rtlpriv->link_info.tidtx_inperiod[tid] = 0;
1418
1419 rtlpriv->link_info.busytraffic = busytraffic;
1420 rtlpriv->link_info.higher_busytraffic = higher_busytraffic;
1421 rtlpriv->link_info.rx_busy_traffic = rx_busy_traffic;
1422 rtlpriv->link_info.tx_busy_traffic = tx_busy_traffic;
1423 rtlpriv->link_info.higher_busyrxtraffic = higher_busyrxtraffic;
1424
1425 /* <3> DM */
1426 rtlpriv->cfg->ops->dm_watchdog(hw);
1427
1428 /* <4> roaming */
1429 if (mac->link_state == MAC80211_LINKED &&
1430 mac->opmode == NL80211_IFTYPE_STATION) {
1431 if ((rtlpriv->link_info.bcn_rx_inperiod +
1432 rtlpriv->link_info.num_rx_inperiod) == 0) {
1433 rtlpriv->link_info.roam_times++;
1434 RT_TRACE(rtlpriv, COMP_ERR, DBG_DMESG,
1435 "AP off for %d s\n",
1436 (rtlpriv->link_info.roam_times * 2));
1437
1438 /* if we can't recv beacon for 6s, we should
1439 * reconnect this AP
1440 */
1441 if (rtlpriv->link_info.roam_times >= 3) {
1442 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
1443 "AP off, try to reconnect now\n");
1444 rtlpriv->link_info.roam_times = 0;
1445 ieee80211_connection_loss(rtlpriv->mac80211.vif);
1446 }
1447 } else {
1448 rtlpriv->link_info.roam_times = 0;
1449 }
1450 }
1451 rtlpriv->link_info.bcn_rx_inperiod = 0;
1452 }
1453
rtl_watch_dog_timer_callback(unsigned long data)1454 void rtl_watch_dog_timer_callback(unsigned long data)
1455 {
1456 struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
1457 struct rtl_priv *rtlpriv = rtl_priv(hw);
1458
1459 queue_delayed_work(rtlpriv->works.rtl_wq,
1460 &rtlpriv->works.watchdog_wq, 0);
1461
1462 mod_timer(&rtlpriv->works.watchdog_timer,
1463 jiffies + MSECS(RTL_WATCH_DOG_TIME));
1464 }
1465
rtl_fwevt_wq_callback(void * data)1466 void rtl_fwevt_wq_callback(void *data)
1467 {
1468 struct rtl_works *rtlworks =
1469 container_of_dwork_rtl(data, struct rtl_works, fwevt_wq);
1470 struct ieee80211_hw *hw = rtlworks->hw;
1471 struct rtl_priv *rtlpriv = rtl_priv(hw);
1472
1473 rtlpriv->cfg->ops->c2h_command_handle(hw);
1474 }
1475
rtl_easy_concurrent_retrytimer_callback(unsigned long data)1476 void rtl_easy_concurrent_retrytimer_callback(unsigned long data)
1477 {
1478 struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
1479 struct rtl_priv *rtlpriv = rtl_priv(hw);
1480 struct rtl_priv *buddy_priv = rtlpriv->buddy_priv;
1481
1482 if (buddy_priv == NULL)
1483 return;
1484
1485 rtlpriv->cfg->ops->dualmac_easy_concurrent(hw);
1486 }
1487
1488 /*********************************************************
1489 *
1490 * frame process functions
1491 *
1492 *********************************************************/
rtl_find_ie(u8 * data,unsigned int len,u8 ie)1493 u8 *rtl_find_ie(u8 *data, unsigned int len, u8 ie)
1494 {
1495 struct ieee80211_mgmt *mgmt = (void *)data;
1496 u8 *pos, *end;
1497
1498 pos = (u8 *)mgmt->u.beacon.variable;
1499 end = data + len;
1500 while (pos < end) {
1501 if (pos + 2 + pos[1] > end)
1502 return NULL;
1503
1504 if (pos[0] == ie)
1505 return pos;
1506
1507 pos += 2 + pos[1];
1508 }
1509 return NULL;
1510 }
1511
1512 /* when we use 2 rx ants we send IEEE80211_SMPS_OFF */
1513 /* when we use 1 rx ant we send IEEE80211_SMPS_STATIC */
rtl_make_smps_action(struct ieee80211_hw * hw,enum ieee80211_smps_mode smps,u8 * da,u8 * bssid)1514 static struct sk_buff *rtl_make_smps_action(struct ieee80211_hw *hw,
1515 enum ieee80211_smps_mode smps, u8 *da, u8 *bssid)
1516 {
1517 struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw));
1518 struct sk_buff *skb;
1519 struct ieee80211_mgmt *action_frame;
1520
1521 /* 27 = header + category + action + smps mode */
1522 skb = dev_alloc_skb(27 + hw->extra_tx_headroom);
1523 if (!skb)
1524 return NULL;
1525
1526 skb_reserve(skb, hw->extra_tx_headroom);
1527 action_frame = (void *)skb_put(skb, 27);
1528 memset(action_frame, 0, 27);
1529 memcpy(action_frame->da, da, ETH_ALEN);
1530 memcpy(action_frame->sa, rtlefuse->dev_addr, ETH_ALEN);
1531 memcpy(action_frame->bssid, bssid, ETH_ALEN);
1532 action_frame->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
1533 IEEE80211_STYPE_ACTION);
1534 action_frame->u.action.category = WLAN_CATEGORY_HT;
1535 action_frame->u.action.u.ht_smps.action = WLAN_HT_ACTION_SMPS;
1536 switch (smps) {
1537 case IEEE80211_SMPS_AUTOMATIC:/* 0 */
1538 case IEEE80211_SMPS_NUM_MODES:/* 4 */
1539 WARN_ON(1);
1540 case IEEE80211_SMPS_OFF:/* 1 */ /*MIMO_PS_NOLIMIT*/
1541 action_frame->u.action.u.ht_smps.smps_control =
1542 WLAN_HT_SMPS_CONTROL_DISABLED;/* 0 */
1543 break;
1544 case IEEE80211_SMPS_STATIC:/* 2 */ /*MIMO_PS_STATIC*/
1545 action_frame->u.action.u.ht_smps.smps_control =
1546 WLAN_HT_SMPS_CONTROL_STATIC;/* 1 */
1547 break;
1548 case IEEE80211_SMPS_DYNAMIC:/* 3 */ /*MIMO_PS_DYNAMIC*/
1549 action_frame->u.action.u.ht_smps.smps_control =
1550 WLAN_HT_SMPS_CONTROL_DYNAMIC;/* 3 */
1551 break;
1552 }
1553
1554 return skb;
1555 }
1556
rtl_send_smps_action(struct ieee80211_hw * hw,struct ieee80211_sta * sta,enum ieee80211_smps_mode smps)1557 int rtl_send_smps_action(struct ieee80211_hw *hw,
1558 struct ieee80211_sta *sta,
1559 enum ieee80211_smps_mode smps)
1560 {
1561 struct rtl_priv *rtlpriv = rtl_priv(hw);
1562 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
1563 struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
1564 struct sk_buff *skb = NULL;
1565 struct rtl_tcb_desc tcb_desc;
1566 u8 bssid[ETH_ALEN] = {0};
1567
1568 memset(&tcb_desc, 0, sizeof(struct rtl_tcb_desc));
1569
1570 if (rtlpriv->mac80211.act_scanning)
1571 goto err_free;
1572
1573 if (!sta)
1574 goto err_free;
1575
1576 if (unlikely(is_hal_stop(rtlhal) || ppsc->rfpwr_state != ERFON))
1577 goto err_free;
1578
1579 if (!test_bit(RTL_STATUS_INTERFACE_START, &rtlpriv->status))
1580 goto err_free;
1581
1582 if (rtlpriv->mac80211.opmode == NL80211_IFTYPE_AP)
1583 memcpy(bssid, rtlpriv->efuse.dev_addr, ETH_ALEN);
1584 else
1585 memcpy(bssid, rtlpriv->mac80211.bssid, ETH_ALEN);
1586
1587 skb = rtl_make_smps_action(hw, smps, sta->addr, bssid);
1588 /* this is a type = mgmt * stype = action frame */
1589 if (skb) {
1590 struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
1591 struct rtl_sta_info *sta_entry =
1592 (struct rtl_sta_info *) sta->drv_priv;
1593 sta_entry->mimo_ps = smps;
1594
1595 info->control.rates[0].idx = 0;
1596 info->band = hw->conf.chandef.chan->band;
1597 rtlpriv->intf_ops->adapter_tx(hw, sta, skb, &tcb_desc);
1598 }
1599 return 1;
1600
1601 err_free:
1602 return 0;
1603 }
1604 EXPORT_SYMBOL(rtl_send_smps_action);
1605
1606 /* There seem to be issues in mac80211 regarding when del ba frames can be
1607 * received. As a work around, we make a fake del_ba if we receive a ba_req;
1608 * however, rx_agg was opened to let mac80211 release some ba related
1609 * resources. This del_ba is for tx only.
1610 */
rtl_make_del_ba(struct ieee80211_hw * hw,u8 * sa,u8 * bssid,u16 tid)1611 struct sk_buff *rtl_make_del_ba(struct ieee80211_hw *hw,
1612 u8 *sa, u8 *bssid, u16 tid)
1613 {
1614 struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw));
1615 struct sk_buff *skb;
1616 struct ieee80211_mgmt *action_frame;
1617 u16 params;
1618
1619 /* 27 = header + category + action + smps mode */
1620 skb = dev_alloc_skb(34 + hw->extra_tx_headroom);
1621 if (!skb)
1622 return NULL;
1623
1624 skb_reserve(skb, hw->extra_tx_headroom);
1625 action_frame = (void *)skb_put(skb, 34);
1626 memset(action_frame, 0, 34);
1627 memcpy(action_frame->sa, sa, ETH_ALEN);
1628 memcpy(action_frame->da, rtlefuse->dev_addr, ETH_ALEN);
1629 memcpy(action_frame->bssid, bssid, ETH_ALEN);
1630 action_frame->frame_control = cpu_to_le16(IEEE80211_FTYPE_MGMT |
1631 IEEE80211_STYPE_ACTION);
1632 action_frame->u.action.category = WLAN_CATEGORY_BACK;
1633 action_frame->u.action.u.delba.action_code = WLAN_ACTION_DELBA;
1634 params = (u16)(1 << 11); /* bit 11 initiator */
1635 params |= (u16)(tid << 12); /* bit 15:12 TID number */
1636
1637 action_frame->u.action.u.delba.params = cpu_to_le16(params);
1638 action_frame->u.action.u.delba.reason_code =
1639 cpu_to_le16(WLAN_REASON_QSTA_TIMEOUT);
1640
1641 return skb;
1642 }
1643
1644 /*********************************************************
1645 *
1646 * IOT functions
1647 *
1648 *********************************************************/
rtl_chk_vendor_ouisub(struct ieee80211_hw * hw,struct octet_string vendor_ie)1649 static bool rtl_chk_vendor_ouisub(struct ieee80211_hw *hw,
1650 struct octet_string vendor_ie)
1651 {
1652 struct rtl_priv *rtlpriv = rtl_priv(hw);
1653 bool matched = false;
1654 static u8 athcap_1[] = { 0x00, 0x03, 0x7F };
1655 static u8 athcap_2[] = { 0x00, 0x13, 0x74 };
1656 static u8 broadcap_1[] = { 0x00, 0x10, 0x18 };
1657 static u8 broadcap_2[] = { 0x00, 0x0a, 0xf7 };
1658 static u8 broadcap_3[] = { 0x00, 0x05, 0xb5 };
1659 static u8 racap[] = { 0x00, 0x0c, 0x43 };
1660 static u8 ciscocap[] = { 0x00, 0x40, 0x96 };
1661 static u8 marvcap[] = { 0x00, 0x50, 0x43 };
1662
1663 if (memcmp(vendor_ie.octet, athcap_1, 3) == 0 ||
1664 memcmp(vendor_ie.octet, athcap_2, 3) == 0) {
1665 rtlpriv->mac80211.vendor = PEER_ATH;
1666 matched = true;
1667 } else if (memcmp(vendor_ie.octet, broadcap_1, 3) == 0 ||
1668 memcmp(vendor_ie.octet, broadcap_2, 3) == 0 ||
1669 memcmp(vendor_ie.octet, broadcap_3, 3) == 0) {
1670 rtlpriv->mac80211.vendor = PEER_BROAD;
1671 matched = true;
1672 } else if (memcmp(vendor_ie.octet, racap, 3) == 0) {
1673 rtlpriv->mac80211.vendor = PEER_RAL;
1674 matched = true;
1675 } else if (memcmp(vendor_ie.octet, ciscocap, 3) == 0) {
1676 rtlpriv->mac80211.vendor = PEER_CISCO;
1677 matched = true;
1678 } else if (memcmp(vendor_ie.octet, marvcap, 3) == 0) {
1679 rtlpriv->mac80211.vendor = PEER_MARV;
1680 matched = true;
1681 }
1682
1683 return matched;
1684 }
1685
rtl_find_221_ie(struct ieee80211_hw * hw,u8 * data,unsigned int len)1686 static bool rtl_find_221_ie(struct ieee80211_hw *hw, u8 *data,
1687 unsigned int len)
1688 {
1689 struct ieee80211_mgmt *mgmt = (void *)data;
1690 struct octet_string vendor_ie;
1691 u8 *pos, *end;
1692
1693 pos = (u8 *)mgmt->u.beacon.variable;
1694 end = data + len;
1695 while (pos < end) {
1696 if (pos[0] == 221) {
1697 vendor_ie.length = pos[1];
1698 vendor_ie.octet = &pos[2];
1699 if (rtl_chk_vendor_ouisub(hw, vendor_ie))
1700 return true;
1701 }
1702
1703 if (pos + 2 + pos[1] > end)
1704 return false;
1705
1706 pos += 2 + pos[1];
1707 }
1708 return false;
1709 }
1710
rtl_recognize_peer(struct ieee80211_hw * hw,u8 * data,unsigned int len)1711 void rtl_recognize_peer(struct ieee80211_hw *hw, u8 *data, unsigned int len)
1712 {
1713 struct rtl_priv *rtlpriv = rtl_priv(hw);
1714 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
1715 struct ieee80211_hdr *hdr = (void *)data;
1716 u32 vendor = PEER_UNKNOWN;
1717
1718 static u8 ap3_1[3] = { 0x00, 0x14, 0xbf };
1719 static u8 ap3_2[3] = { 0x00, 0x1a, 0x70 };
1720 static u8 ap3_3[3] = { 0x00, 0x1d, 0x7e };
1721 static u8 ap4_1[3] = { 0x00, 0x90, 0xcc };
1722 static u8 ap4_2[3] = { 0x00, 0x0e, 0x2e };
1723 static u8 ap4_3[3] = { 0x00, 0x18, 0x02 };
1724 static u8 ap4_4[3] = { 0x00, 0x17, 0x3f };
1725 static u8 ap4_5[3] = { 0x00, 0x1c, 0xdf };
1726 static u8 ap5_1[3] = { 0x00, 0x1c, 0xf0 };
1727 static u8 ap5_2[3] = { 0x00, 0x21, 0x91 };
1728 static u8 ap5_3[3] = { 0x00, 0x24, 0x01 };
1729 static u8 ap5_4[3] = { 0x00, 0x15, 0xe9 };
1730 static u8 ap5_5[3] = { 0x00, 0x17, 0x9A };
1731 static u8 ap5_6[3] = { 0x00, 0x18, 0xE7 };
1732 static u8 ap6_1[3] = { 0x00, 0x17, 0x94 };
1733 static u8 ap7_1[3] = { 0x00, 0x14, 0xa4 };
1734
1735 if (mac->opmode != NL80211_IFTYPE_STATION)
1736 return;
1737
1738 if (mac->link_state == MAC80211_NOLINK) {
1739 mac->vendor = PEER_UNKNOWN;
1740 return;
1741 }
1742
1743 if (mac->cnt_after_linked > 2)
1744 return;
1745
1746 /* check if this really is a beacon */
1747 if (!ieee80211_is_beacon(hdr->frame_control))
1748 return;
1749
1750 /* min. beacon length + FCS_LEN */
1751 if (len <= 40 + FCS_LEN)
1752 return;
1753
1754 /* and only beacons from the associated BSSID, please */
1755 if (!ether_addr_equal(hdr->addr3, rtlpriv->mac80211.bssid))
1756 return;
1757
1758 if (rtl_find_221_ie(hw, data, len))
1759 vendor = mac->vendor;
1760
1761 if ((memcmp(mac->bssid, ap5_1, 3) == 0) ||
1762 (memcmp(mac->bssid, ap5_2, 3) == 0) ||
1763 (memcmp(mac->bssid, ap5_3, 3) == 0) ||
1764 (memcmp(mac->bssid, ap5_4, 3) == 0) ||
1765 (memcmp(mac->bssid, ap5_5, 3) == 0) ||
1766 (memcmp(mac->bssid, ap5_6, 3) == 0) ||
1767 vendor == PEER_ATH) {
1768 vendor = PEER_ATH;
1769 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD, "=>ath find\n");
1770 } else if ((memcmp(mac->bssid, ap4_4, 3) == 0) ||
1771 (memcmp(mac->bssid, ap4_5, 3) == 0) ||
1772 (memcmp(mac->bssid, ap4_1, 3) == 0) ||
1773 (memcmp(mac->bssid, ap4_2, 3) == 0) ||
1774 (memcmp(mac->bssid, ap4_3, 3) == 0) ||
1775 vendor == PEER_RAL) {
1776 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD, "=>ral find\n");
1777 vendor = PEER_RAL;
1778 } else if (memcmp(mac->bssid, ap6_1, 3) == 0 ||
1779 vendor == PEER_CISCO) {
1780 vendor = PEER_CISCO;
1781 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD, "=>cisco find\n");
1782 } else if ((memcmp(mac->bssid, ap3_1, 3) == 0) ||
1783 (memcmp(mac->bssid, ap3_2, 3) == 0) ||
1784 (memcmp(mac->bssid, ap3_3, 3) == 0) ||
1785 vendor == PEER_BROAD) {
1786 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD, "=>broad find\n");
1787 vendor = PEER_BROAD;
1788 } else if (memcmp(mac->bssid, ap7_1, 3) == 0 ||
1789 vendor == PEER_MARV) {
1790 vendor = PEER_MARV;
1791 RT_TRACE(rtlpriv, COMP_MAC80211, DBG_LOUD, "=>marv find\n");
1792 }
1793
1794 mac->vendor = vendor;
1795 }
1796
1797 /*********************************************************
1798 *
1799 * sysfs functions
1800 *
1801 *********************************************************/
rtl_show_debug_level(struct device * d,struct device_attribute * attr,char * buf)1802 static ssize_t rtl_show_debug_level(struct device *d,
1803 struct device_attribute *attr, char *buf)
1804 {
1805 struct ieee80211_hw *hw = dev_get_drvdata(d);
1806 struct rtl_priv *rtlpriv = rtl_priv(hw);
1807
1808 return sprintf(buf, "0x%08X\n", rtlpriv->dbg.global_debuglevel);
1809 }
1810
rtl_store_debug_level(struct device * d,struct device_attribute * attr,const char * buf,size_t count)1811 static ssize_t rtl_store_debug_level(struct device *d,
1812 struct device_attribute *attr,
1813 const char *buf, size_t count)
1814 {
1815 struct ieee80211_hw *hw = dev_get_drvdata(d);
1816 struct rtl_priv *rtlpriv = rtl_priv(hw);
1817 unsigned long val;
1818 int ret;
1819
1820 ret = strict_strtoul(buf, 0, &val);
1821 if (ret) {
1822 printk(KERN_DEBUG "%s is not in hex or decimal form.\n", buf);
1823 } else {
1824 rtlpriv->dbg.global_debuglevel = val;
1825 printk(KERN_DEBUG "debuglevel:%x\n",
1826 rtlpriv->dbg.global_debuglevel);
1827 }
1828
1829 return strnlen(buf, count);
1830 }
1831
1832 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
1833 rtl_show_debug_level, rtl_store_debug_level);
1834
1835 static struct attribute *rtl_sysfs_entries[] = {
1836
1837 &dev_attr_debug_level.attr,
1838
1839 NULL
1840 };
1841
1842 /*
1843 * "name" is folder name witch will be
1844 * put in device directory like :
1845 * sys/devices/pci0000:00/0000:00:1c.4/
1846 * 0000:06:00.0/rtl_sysfs
1847 */
1848 struct attribute_group rtl_attribute_group = {
1849 .name = "rtlsysfs",
1850 .attrs = rtl_sysfs_entries,
1851 };
1852
1853 MODULE_AUTHOR("lizhaoming <chaoming_li@realsil.com.cn>");
1854 MODULE_AUTHOR("Realtek WlanFAE <wlanfae@realtek.com>");
1855 MODULE_AUTHOR("Larry Finger <Larry.FInger@lwfinger.net>");
1856 MODULE_LICENSE("GPL");
1857 MODULE_DESCRIPTION("Realtek 802.11n PCI wireless core");
1858
1859 struct rtl_global_var global_var = {};
1860
rtl_core_module_init(void)1861 static int __init rtl_core_module_init(void)
1862 {
1863 if (rtl_rate_control_register())
1864 pr_err("Unable to register rtl_rc, use default RC !!\n");
1865
1866 /* init some global vars */
1867 INIT_LIST_HEAD(&global_var.glb_priv_list);
1868 spin_lock_init(&global_var.glb_list_lock);
1869
1870 return 0;
1871 }
1872
rtl_core_module_exit(void)1873 static void __exit rtl_core_module_exit(void)
1874 {
1875 /*RC*/
1876 rtl_rate_control_unregister();
1877 }
1878
1879 module_init(rtl_core_module_init);
1880 module_exit(rtl_core_module_exit);
1881