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proc: use seq_puts()/seq_putc() where possible
[linux-2.6/next.git] / drivers / net / wireless / rtlwifi / base.c
blobcf0b73e51fc2875e87711be58ddf2ef1bf736908
1 /******************************************************************************
2 *
3 * Copyright(c) 2009-2010 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 <linux/ip.h>
31 #include "wifi.h"
32 #include "rc.h"
33 #include "base.h"
34 #include "efuse.h"
35 #include "cam.h"
36 #include "ps.h"
37 #include "regd.h"
38
39 /*
40 *NOTICE!!!: This file will be very big, we hsould
41 *keep it clear under follwing roles:
42 *
43 *This file include follwing part, so, if you add new
44 *functions into this file, please check which part it
45 *should includes. or check if you should add new part
46 *for this file:
47 *
48 *1) mac80211 init functions
49 *2) tx information functions
50 *3) functions called by core.c
51 *4) wq & timer callback functions
52 *5) frame process functions
53 *6) sysfs functions
54 *7) ...
55 */
56
57 /*********************************************************
58 *
59 * mac80211 init functions
60 *
61 *********************************************************/
62 static struct ieee80211_channel rtl_channeltable[] = {
63 {.center_freq = 2412, .hw_value = 1,},
64 {.center_freq = 2417, .hw_value = 2,},
65 {.center_freq = 2422, .hw_value = 3,},
66 {.center_freq = 2427, .hw_value = 4,},
67 {.center_freq = 2432, .hw_value = 5,},
68 {.center_freq = 2437, .hw_value = 6,},
69 {.center_freq = 2442, .hw_value = 7,},
70 {.center_freq = 2447, .hw_value = 8,},
71 {.center_freq = 2452, .hw_value = 9,},
72 {.center_freq = 2457, .hw_value = 10,},
73 {.center_freq = 2462, .hw_value = 11,},
74 {.center_freq = 2467, .hw_value = 12,},
75 {.center_freq = 2472, .hw_value = 13,},
76 {.center_freq = 2484, .hw_value = 14,},
77 };
78
79 static struct ieee80211_rate rtl_ratetable[] = {
80 {.bitrate = 10, .hw_value = 0x00,},
81 {.bitrate = 20, .hw_value = 0x01,},
82 {.bitrate = 55, .hw_value = 0x02,},
83 {.bitrate = 110, .hw_value = 0x03,},
84 {.bitrate = 60, .hw_value = 0x04,},
85 {.bitrate = 90, .hw_value = 0x05,},
86 {.bitrate = 120, .hw_value = 0x06,},
87 {.bitrate = 180, .hw_value = 0x07,},
88 {.bitrate = 240, .hw_value = 0x08,},
89 {.bitrate = 360, .hw_value = 0x09,},
90 {.bitrate = 480, .hw_value = 0x0a,},
91 {.bitrate = 540, .hw_value = 0x0b,},
92 };
93
94 static const struct ieee80211_supported_band rtl_band_2ghz = {
95 .band = IEEE80211_BAND_2GHZ,
96
97 .channels = rtl_channeltable,
98 .n_channels = ARRAY_SIZE(rtl_channeltable),
99
100 .bitrates = rtl_ratetable,
101 .n_bitrates = ARRAY_SIZE(rtl_ratetable),
102
103 .ht_cap = {0},
104 };
105
106 static void _rtl_init_hw_ht_capab(struct ieee80211_hw *hw,
107 struct ieee80211_sta_ht_cap *ht_cap)
108 {
109 struct rtl_priv *rtlpriv = rtl_priv(hw);
110 struct rtl_phy *rtlphy = &(rtlpriv->phy);
111
112 ht_cap->ht_supported = true;
113 ht_cap->cap = IEEE80211_HT_CAP_SUP_WIDTH_20_40 |
114 IEEE80211_HT_CAP_SGI_40 |
115 IEEE80211_HT_CAP_SGI_20 |
116 IEEE80211_HT_CAP_DSSSCCK40 | IEEE80211_HT_CAP_MAX_AMSDU;
117
118 /*
119 *Maximum length of AMPDU that the STA can receive.
120 *Length = 2 ^ (13 + max_ampdu_length_exp) - 1 (octets)
121 */
122 ht_cap->ampdu_factor = IEEE80211_HT_MAX_AMPDU_64K;
123
124 /*Minimum MPDU start spacing , */
125 ht_cap->ampdu_density = IEEE80211_HT_MPDU_DENSITY_16;
126
127 ht_cap->mcs.tx_params = IEEE80211_HT_MCS_TX_DEFINED;
128
129 /*
130 *hw->wiphy->bands[IEEE80211_BAND_2GHZ]
131 *base on ant_num
132 *rx_mask: RX mask
133 *if rx_ant =1 rx_mask[0]=0xff;==>MCS0-MCS7
134 *if rx_ant =2 rx_mask[1]=0xff;==>MCS8-MCS15
135 *if rx_ant >=3 rx_mask[2]=0xff;
136 *if BW_40 rx_mask[4]=0x01;
137 *highest supported RX rate
138 */
139 if (get_rf_type(rtlphy) == RF_1T2R || get_rf_type(rtlphy) == RF_2T2R) {
140
141 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG, ("1T2R or 2T2R\n"));
142
143 ht_cap->mcs.rx_mask[0] = 0xFF;
144 ht_cap->mcs.rx_mask[1] = 0xFF;
145 ht_cap->mcs.rx_mask[4] = 0x01;
146
147 ht_cap->mcs.rx_highest = MAX_BIT_RATE_40MHZ_MCS15;
148 } else if (get_rf_type(rtlphy) == RF_1T1R) {
149
150 RT_TRACE(rtlpriv, COMP_INIT, DBG_DMESG, ("1T1R\n"));
151
152 ht_cap->mcs.rx_mask[0] = 0xFF;
153 ht_cap->mcs.rx_mask[1] = 0x00;
154 ht_cap->mcs.rx_mask[4] = 0x01;
155
156 ht_cap->mcs.rx_highest = MAX_BIT_RATE_40MHZ_MCS7;
157 }
158 }
159
160 static void _rtl_init_mac80211(struct ieee80211_hw *hw)
161 {
162 struct rtl_mac *rtlmac = rtl_mac(rtl_priv(hw));
163 struct rtl_efuse *rtlefuse = rtl_efuse(rtl_priv(hw));
164 struct ieee80211_supported_band *sband;
165
166 /* <1> use mac->bands as mem for hw->wiphy->bands */
167 sband = &(rtlmac->bands[IEEE80211_BAND_2GHZ]);
168
169 /*
170 * <2> set hw->wiphy->bands[IEEE80211_BAND_2GHZ]
171 * to default value(1T1R)
172 */
173 memcpy(&(rtlmac->bands[IEEE80211_BAND_2GHZ]), &rtl_band_2ghz,
174 sizeof(struct ieee80211_supported_band));
175
176 /* <3> init ht cap base on ant_num */
177 _rtl_init_hw_ht_capab(hw, &sband->ht_cap);
178
179 /* <4> set mac->sband to wiphy->sband */
180 hw->wiphy->bands[IEEE80211_BAND_2GHZ] = sband;
181
182 /* <5> set hw caps */
183 hw->flags = IEEE80211_HW_SIGNAL_DBM |
184 IEEE80211_HW_RX_INCLUDES_FCS |
185 IEEE80211_HW_BEACON_FILTER | IEEE80211_HW_AMPDU_AGGREGATION | /*PS*/
186 /*IEEE80211_HW_SUPPORTS_PS | */
187 /*IEEE80211_HW_PS_NULLFUNC_STACK | */
188 /*IEEE80211_HW_SUPPORTS_DYNAMIC_PS | */
189 IEEE80211_HW_REPORTS_TX_ACK_STATUS | 0;
190
191 hw->wiphy->interface_modes =
192 BIT(NL80211_IFTYPE_STATION) | BIT(NL80211_IFTYPE_ADHOC);
193
194 hw->wiphy->rts_threshold = 2347;
195
196 hw->queues = AC_MAX;
197 hw->extra_tx_headroom = RTL_TX_HEADER_SIZE;
198
199 /* TODO: Correct this value for our hw */
200 /* TODO: define these hard code value */
201 hw->channel_change_time = 100;
202 hw->max_listen_interval = 5;
203 hw->max_rate_tries = 4;
204 /* hw->max_rates = 1; */
205
206 /* <6> mac address */
207 if (is_valid_ether_addr(rtlefuse->dev_addr)) {
208 SET_IEEE80211_PERM_ADDR(hw, rtlefuse->dev_addr);
209 } else {
210 u8 rtlmac[] = { 0x00, 0xe0, 0x4c, 0x81, 0x92, 0x00 };
211 get_random_bytes((rtlmac + (ETH_ALEN - 1)), 1);
212 SET_IEEE80211_PERM_ADDR(hw, rtlmac);
213 }
214
215 }
216
217 static void _rtl_init_deferred_work(struct ieee80211_hw *hw)
218 {
219 struct rtl_priv *rtlpriv = rtl_priv(hw);
220
221 /* <1> timer */
222 init_timer(&rtlpriv->works.watchdog_timer);
223 setup_timer(&rtlpriv->works.watchdog_timer,
224 rtl_watch_dog_timer_callback, (unsigned long)hw);
225
226 /* <2> work queue */
227 rtlpriv->works.hw = hw;
228 rtlpriv->works.rtl_wq = alloc_workqueue(rtlpriv->cfg->name, 0, 0);
229 INIT_DELAYED_WORK(&rtlpriv->works.watchdog_wq,
230 (void *)rtl_watchdog_wq_callback);
231 INIT_DELAYED_WORK(&rtlpriv->works.ips_nic_off_wq,
232 (void *)rtl_ips_nic_off_wq_callback);
233
234 }
235
236 void rtl_deinit_deferred_work(struct ieee80211_hw *hw)
237 {
238 struct rtl_priv *rtlpriv = rtl_priv(hw);
239
240 del_timer_sync(&rtlpriv->works.watchdog_timer);
241
242 cancel_delayed_work(&rtlpriv->works.watchdog_wq);
243 cancel_delayed_work(&rtlpriv->works.ips_nic_off_wq);
244 }
245
246 void rtl_init_rfkill(struct ieee80211_hw *hw)
247 {
248 struct rtl_priv *rtlpriv = rtl_priv(hw);
249
250 bool radio_state;
251 bool blocked;
252 u8 valid = 0;
253
254 radio_state = rtlpriv->cfg->ops->radio_onoff_checking(hw, &valid);
255
256 /*set init state to that of switch */
257 rtlpriv->rfkill.rfkill_state = radio_state;
258 printk(KERN_INFO "rtlwifi: wireless switch is %s\n",
259 rtlpriv->rfkill.rfkill_state ? "on" : "off");
260
261 if (valid) {
262 rtlpriv->rfkill.rfkill_state = radio_state;
263
264 blocked = (rtlpriv->rfkill.rfkill_state == 1) ? 0 : 1;
265 wiphy_rfkill_set_hw_state(hw->wiphy, blocked);
266 }
267
268 wiphy_rfkill_start_polling(hw->wiphy);
269 }
270
271 void rtl_deinit_rfkill(struct ieee80211_hw *hw)
272 {
273 wiphy_rfkill_stop_polling(hw->wiphy);
274 }
275
276 int rtl_init_core(struct ieee80211_hw *hw)
277 {
278 struct rtl_priv *rtlpriv = rtl_priv(hw);
279 struct rtl_mac *rtlmac = rtl_mac(rtl_priv(hw));
280
281 /* <1> init mac80211 */
282 _rtl_init_mac80211(hw);
283 rtlmac->hw = hw;
284
285 /* <2> rate control register */
286 if (rtl_rate_control_register()) {
287 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG,
288 ("rtl: Unable to register rtl_rc,"
289 "use default RC !!\n"));
290 } else {
291 hw->rate_control_algorithm = "rtl_rc";
292 }
293
294 /*
295 * <3> init CRDA must come after init
296 * mac80211 hw in _rtl_init_mac80211.
297 */
298 if (rtl_regd_init(hw, rtl_reg_notifier)) {
299 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, ("REGD init failed\n"));
300 return 1;
301 } else {
302 /* CRDA regd hint must after init CRDA */
303 if (regulatory_hint(hw->wiphy, rtlpriv->regd.alpha2)) {
304 RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING,
305 ("regulatory_hint fail\n"));
306 }
307 }
308
309 /* <4> locks */
310 mutex_init(&rtlpriv->locks.conf_mutex);
311 spin_lock_init(&rtlpriv->locks.ips_lock);
312 spin_lock_init(&rtlpriv->locks.irq_th_lock);
313 spin_lock_init(&rtlpriv->locks.h2c_lock);
314 spin_lock_init(&rtlpriv->locks.rf_ps_lock);
315 spin_lock_init(&rtlpriv->locks.rf_lock);
316 spin_lock_init(&rtlpriv->locks.lps_lock);
317
318 rtlmac->link_state = MAC80211_NOLINK;
319
320 /* <5> init deferred work */
321 _rtl_init_deferred_work(hw);
322
323 return 0;
324 }
325
326 void rtl_deinit_core(struct ieee80211_hw *hw)
327 {
328 /*RC*/
329 rtl_rate_control_unregister();
330 }
331
332 void rtl_init_rx_config(struct ieee80211_hw *hw)
333 {
334 struct rtl_priv *rtlpriv = rtl_priv(hw);
335 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
336
337 rtlpriv->cfg->ops->get_hw_reg(hw, HW_VAR_RCR, (u8 *) (&mac->rx_conf));
338 rtlpriv->cfg->ops->get_hw_reg(hw, HW_VAR_MGT_FILTER,
339 (u8 *) (&mac->rx_mgt_filter));
340 rtlpriv->cfg->ops->get_hw_reg(hw, HW_VAR_CTRL_FILTER,
341 (u8 *) (&mac->rx_ctrl_filter));
342 rtlpriv->cfg->ops->get_hw_reg(hw, HW_VAR_DATA_FILTER,
343 (u8 *) (&mac->rx_data_filter));
344 }
345
346 /*********************************************************
347 *
348 * tx information functions
349 *
350 *********************************************************/
351 static void _rtl_qurey_shortpreamble_mode(struct ieee80211_hw *hw,
352 struct rtl_tcb_desc *tcb_desc,
353 struct ieee80211_tx_info *info)
354 {
355 struct rtl_priv *rtlpriv = rtl_priv(hw);
356 u8 rate_flag = info->control.rates[0].flags;
357
358 tcb_desc->use_shortpreamble = false;
359
360 /* 1M can only use Long Preamble. 11B spec */
361 if (tcb_desc->hw_rate == rtlpriv->cfg->maps[RTL_RC_CCK_RATE1M])
362 return;
363 else if (rate_flag & IEEE80211_TX_RC_USE_SHORT_PREAMBLE)
364 tcb_desc->use_shortpreamble = true;
365
366 return;
367 }
368
369 static void _rtl_query_shortgi(struct ieee80211_hw *hw,
370 struct rtl_tcb_desc *tcb_desc,
371 struct ieee80211_tx_info *info)
372 {
373 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
374 u8 rate_flag = info->control.rates[0].flags;
375
376 tcb_desc->use_shortgi = false;
377
378 if (!mac->ht_enable)
379 return;
380
381 if (!mac->sgi_40 && !mac->sgi_20)
382 return;
383
384 if ((mac->bw_40 == true) && mac->sgi_40)
385 tcb_desc->use_shortgi = true;
386 else if ((mac->bw_40 == false) && mac->sgi_20)
387 tcb_desc->use_shortgi = true;
388
389 if (!(rate_flag & IEEE80211_TX_RC_SHORT_GI))
390 tcb_desc->use_shortgi = false;
391
392 }
393
394 static void _rtl_query_protection_mode(struct ieee80211_hw *hw,
395 struct rtl_tcb_desc *tcb_desc,
396 struct ieee80211_tx_info *info)
397 {
398 struct rtl_priv *rtlpriv = rtl_priv(hw);
399 u8 rate_flag = info->control.rates[0].flags;
400
401 /* Common Settings */
402 tcb_desc->b_rts_stbc = false;
403 tcb_desc->b_cts_enable = false;
404 tcb_desc->rts_sc = 0;
405 tcb_desc->b_rts_bw = false;
406 tcb_desc->b_rts_use_shortpreamble = false;
407 tcb_desc->b_rts_use_shortgi = false;
408
409 if (rate_flag & IEEE80211_TX_RC_USE_CTS_PROTECT) {
410 /* Use CTS-to-SELF in protection mode. */
411 tcb_desc->b_rts_enable = true;
412 tcb_desc->b_cts_enable = true;
413 tcb_desc->rts_rate = rtlpriv->cfg->maps[RTL_RC_OFDM_RATE24M];
414 } else if (rate_flag & IEEE80211_TX_RC_USE_RTS_CTS) {
415 /* Use RTS-CTS in protection mode. */
416 tcb_desc->b_rts_enable = true;
417 tcb_desc->rts_rate = rtlpriv->cfg->maps[RTL_RC_OFDM_RATE24M];
418 }
419
420 }
421
422 static void _rtl_txrate_selectmode(struct ieee80211_hw *hw,
423 struct rtl_tcb_desc *tcb_desc)
424 {
425 struct rtl_priv *rtlpriv = rtl_priv(hw);
426 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
427
428 if (!tcb_desc->disable_ratefallback || !tcb_desc->use_driver_rate) {
429 if (mac->opmode == NL80211_IFTYPE_STATION)
430 tcb_desc->ratr_index = 0;
431 else if (mac->opmode == NL80211_IFTYPE_ADHOC) {
432 if (tcb_desc->b_multicast || tcb_desc->b_broadcast) {
433 tcb_desc->hw_rate =
434 rtlpriv->cfg->maps[RTL_RC_CCK_RATE2M];
435 tcb_desc->use_driver_rate = 1;
436 } else {
437 /* TODO */
438 }
439 }
440 }
441
442 if (rtlpriv->dm.b_useramask) {
443 /* TODO we will differentiate adhoc and station futrue */
444 tcb_desc->mac_id = 0;
445
446 if ((mac->mode == WIRELESS_MODE_N_24G) ||
447 (mac->mode == WIRELESS_MODE_N_5G)) {
448 tcb_desc->ratr_index = RATR_INX_WIRELESS_NGB;
449 } else if (mac->mode & WIRELESS_MODE_G) {
450 tcb_desc->ratr_index = RATR_INX_WIRELESS_GB;
451 } else if (mac->mode & WIRELESS_MODE_B) {
452 tcb_desc->ratr_index = RATR_INX_WIRELESS_B;
453 }
454 }
455
456 }
457
458 static void _rtl_query_bandwidth_mode(struct ieee80211_hw *hw,
459 struct rtl_tcb_desc *tcb_desc)
460 {
461 struct rtl_priv *rtlpriv = rtl_priv(hw);
462 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
463
464 tcb_desc->b_packet_bw = false;
465
466 if (!mac->bw_40 || !mac->ht_enable)
467 return;
468
469 if (tcb_desc->b_multicast || tcb_desc->b_broadcast)
470 return;
471
472 /*use legency rate, shall use 20MHz */
473 if (tcb_desc->hw_rate <= rtlpriv->cfg->maps[RTL_RC_OFDM_RATE54M])
474 return;
475
476 tcb_desc->b_packet_bw = true;
477 }
478
479 static u8 _rtl_get_highest_n_rate(struct ieee80211_hw *hw)
480 {
481 struct rtl_priv *rtlpriv = rtl_priv(hw);
482 struct rtl_phy *rtlphy = &(rtlpriv->phy);
483 u8 hw_rate;
484
485 if (get_rf_type(rtlphy) == RF_2T2R)
486 hw_rate = rtlpriv->cfg->maps[RTL_RC_HT_RATEMCS15];
487 else
488 hw_rate = rtlpriv->cfg->maps[RTL_RC_HT_RATEMCS7];
489
490 return hw_rate;
491 }
492
493 void rtl_get_tcb_desc(struct ieee80211_hw *hw,
494 struct ieee80211_tx_info *info,
495 struct sk_buff *skb, struct rtl_tcb_desc *tcb_desc)
496 {
497 struct rtl_priv *rtlpriv = rtl_priv(hw);
498 struct rtl_mac *rtlmac = rtl_mac(rtl_priv(hw));
499 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)(skb->data);
500 struct ieee80211_rate *txrate;
501 u16 fc = le16_to_cpu(hdr->frame_control);
502
503 memset(tcb_desc, 0, sizeof(struct rtl_tcb_desc));
504
505 if (ieee80211_is_data(fc)) {
506 txrate = ieee80211_get_tx_rate(hw, info);
507 tcb_desc->hw_rate = txrate->hw_value;
508
509 /*
510 *we set data rate RTL_RC_CCK_RATE1M
511 *in rtl_rc.c if skb is special data or
512 *mgt which need low data rate.
513 */
514
515 /*
516 *So tcb_desc->hw_rate is just used for
517 *special data and mgt frames
518 */
519 if (tcb_desc->hw_rate < rtlpriv->cfg->maps[RTL_RC_CCK_RATE11M]) {
520 tcb_desc->use_driver_rate = true;
521 tcb_desc->ratr_index = 7;
522
523 tcb_desc->hw_rate =
524 rtlpriv->cfg->maps[RTL_RC_CCK_RATE1M];
525 tcb_desc->disable_ratefallback = 1;
526 } else {
527 /*
528 *because hw will nerver use hw_rate
529 *when tcb_desc->use_driver_rate = false
530 *so we never set highest N rate here,
531 *and N rate will all be controled by FW
532 *when tcb_desc->use_driver_rate = false
533 */
534 if (rtlmac->ht_enable) {
535 tcb_desc->hw_rate = _rtl_get_highest_n_rate(hw);
536 } else {
537 if (rtlmac->mode == WIRELESS_MODE_B) {
538 tcb_desc->hw_rate =
539 rtlpriv->cfg->maps[RTL_RC_CCK_RATE11M];
540 } else {
541 tcb_desc->hw_rate =
542 rtlpriv->cfg->maps[RTL_RC_OFDM_RATE54M];
543 }
544 }
545 }
546
547 if (is_multicast_ether_addr(ieee80211_get_DA(hdr)))
548 tcb_desc->b_multicast = 1;
549 else if (is_broadcast_ether_addr(ieee80211_get_DA(hdr)))
550 tcb_desc->b_broadcast = 1;
551
552 _rtl_txrate_selectmode(hw, tcb_desc);
553 _rtl_query_bandwidth_mode(hw, tcb_desc);
554 _rtl_qurey_shortpreamble_mode(hw, tcb_desc, info);
555 _rtl_query_shortgi(hw, tcb_desc, info);
556 _rtl_query_protection_mode(hw, tcb_desc, info);
557 } else {
558 tcb_desc->use_driver_rate = true;
559 tcb_desc->ratr_index = 7;
560 tcb_desc->disable_ratefallback = 1;
561 tcb_desc->mac_id = 0;
562
563 tcb_desc->hw_rate = rtlpriv->cfg->maps[RTL_RC_CCK_RATE1M];
564 }
565 }
566 EXPORT_SYMBOL(rtl_get_tcb_desc);
567
568 bool rtl_tx_mgmt_proc(struct ieee80211_hw *hw, struct sk_buff *skb)
569 {
570 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
571 struct rtl_priv *rtlpriv = rtl_priv(hw);
572 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)(skb->data);
573 u16 fc = le16_to_cpu(hdr->frame_control);
574
575 if (ieee80211_is_auth(fc)) {
576 RT_TRACE(rtlpriv, COMP_SEND, DBG_DMESG, ("MAC80211_LINKING\n"));
577 rtl_ips_nic_on(hw);
578
579 mac->link_state = MAC80211_LINKING;
580 }
581
582 return true;
583 }
584
585 bool rtl_action_proc(struct ieee80211_hw *hw, struct sk_buff *skb, u8 is_tx)
586 {
587 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
588 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)(skb->data);
589 struct rtl_priv *rtlpriv = rtl_priv(hw);
590 u16 fc = le16_to_cpu(hdr->frame_control);
591 u8 *act = (u8 *) (((u8 *) skb->data + MAC80211_3ADDR_LEN));
592 u8 category;
593
594 if (!ieee80211_is_action(fc))
595 return true;
596
597 category = *act;
598 act++;
599 switch (category) {
600 case ACT_CAT_BA:
601 switch (*act) {
602 case ACT_ADDBAREQ:
603 if (mac->act_scanning)
604 return false;
605
606 RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV), DBG_DMESG,
607 ("%s ACT_ADDBAREQ From :" MAC_FMT "\n",
608 is_tx ? "Tx" : "Rx", MAC_ARG(hdr->addr2)));
609 break;
610 case ACT_ADDBARSP:
611 RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV), DBG_DMESG,
612 ("%s ACT_ADDBARSP From :" MAC_FMT "\n",
613 is_tx ? "Tx" : "Rx", MAC_ARG(hdr->addr2)));
614 break;
615 case ACT_DELBA:
616 RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV), DBG_DMESG,
617 ("ACT_ADDBADEL From :" MAC_FMT "\n",
618 MAC_ARG(hdr->addr2)));
619 break;
620 }
621 break;
622 default:
623 break;
624 }
625
626 return true;
627 }
628
629 /*should call before software enc*/
630 u8 rtl_is_special_data(struct ieee80211_hw *hw, struct sk_buff *skb, u8 is_tx)
631 {
632 struct rtl_priv *rtlpriv = rtl_priv(hw);
633 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)(skb->data);
634 struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
635 u16 fc = le16_to_cpu(hdr->frame_control);
636 u16 ether_type;
637 u8 mac_hdr_len = ieee80211_get_hdrlen_from_skb(skb);
638 const struct iphdr *ip;
639
640 if (!ieee80211_is_data(fc))
641 goto end;
642
643 if (ieee80211_is_nullfunc(fc))
644 return true;
645
646 ip = (struct iphdr *)((u8 *) skb->data + mac_hdr_len +
647 SNAP_SIZE + PROTOC_TYPE_SIZE);
648 ether_type = *(u16 *) ((u8 *) skb->data + mac_hdr_len + SNAP_SIZE);
649 ether_type = ntohs(ether_type);
650
651 if (ETH_P_IP == ether_type) {
652 if (IPPROTO_UDP == ip->protocol) {
653 struct udphdr *udp = (struct udphdr *)((u8 *) ip +
654 (ip->ihl << 2));
655 if (((((u8 *) udp)[1] == 68) &&
656 (((u8 *) udp)[3] == 67)) ||
657 ((((u8 *) udp)[1] == 67) &&
658 (((u8 *) udp)[3] == 68))) {
659 /*
660 * 68 : UDP BOOTP client
661 * 67 : UDP BOOTP server
662 */
663 RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV),
664 DBG_DMESG, ("dhcp %s !!\n",
665 (is_tx) ? "Tx" : "Rx"));
666
667 if (is_tx) {
668 rtl_lps_leave(hw);
669 ppsc->last_delaylps_stamp_jiffies =
670 jiffies;
671 }
672
673 return true;
674 }
675 }
676 } else if (ETH_P_ARP == ether_type) {
677 if (is_tx) {
678 rtl_lps_leave(hw);
679 ppsc->last_delaylps_stamp_jiffies = jiffies;
680 }
681
682 return true;
683 } else if (ETH_P_PAE == ether_type) {
684 RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV), DBG_DMESG,
685 ("802.1X %s EAPOL pkt!!\n", (is_tx) ? "Tx" : "Rx"));
686
687 if (is_tx) {
688 rtl_lps_leave(hw);
689 ppsc->last_delaylps_stamp_jiffies = jiffies;
690 }
691
692 return true;
693 } else if (0x86DD == ether_type) {
694 return true;
695 }
696
697 end:
698 return false;
699 }
700
701 /*********************************************************
702 *
703 * functions called by core.c
704 *
705 *********************************************************/
706 int rtl_tx_agg_start(struct ieee80211_hw *hw, const u8 *ra, u16 tid, u16 *ssn)
707 {
708 struct rtl_priv *rtlpriv = rtl_priv(hw);
709 struct rtl_tid_data *tid_data;
710 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
711
712 RT_TRACE(rtlpriv, COMP_SEND, DBG_DMESG,
713 ("on ra = %pM tid = %d\n", ra, tid));
714
715 if (unlikely(tid >= MAX_TID_COUNT))
716 return -EINVAL;
717
718 if (mac->tids[tid].agg.agg_state != RTL_AGG_OFF) {
719 RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING,
720 ("Start AGG when state is not RTL_AGG_OFF !\n"));
721 return -ENXIO;
722 }
723
724 tid_data = &mac->tids[tid];
725 *ssn = SEQ_TO_SN(tid_data->seq_number);
726
727 RT_TRACE(rtlpriv, COMP_SEND, DBG_DMESG,
728 ("HW queue is empty tid:%d\n", tid));
729 tid_data->agg.agg_state = RTL_AGG_ON;
730
731 ieee80211_start_tx_ba_cb_irqsafe(mac->vif, ra, tid);
732
733 return 0;
734 }
735
736 int rtl_tx_agg_stop(struct ieee80211_hw *hw, const u8 * ra, u16 tid)
737 {
738 int ssn = -1;
739 struct rtl_priv *rtlpriv = rtl_priv(hw);
740 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
741 struct rtl_tid_data *tid_data;
742
743 if (!ra) {
744 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, ("ra = NULL\n"));
745 return -EINVAL;
746 }
747
748 if (unlikely(tid >= MAX_TID_COUNT))
749 return -EINVAL;
750
751 if (mac->tids[tid].agg.agg_state != RTL_AGG_ON)
752 RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING,
753 ("Stopping AGG while state not ON or starting\n"));
754
755 tid_data = &mac->tids[tid];
756 ssn = (tid_data->seq_number & IEEE80211_SCTL_SEQ) >> 4;
757
758 mac->tids[tid].agg.agg_state = RTL_AGG_OFF;
759
760 ieee80211_stop_tx_ba_cb_irqsafe(mac->vif, ra, tid);
761
762 return 0;
763 }
764
765 /*********************************************************
766 *
767 * wq & timer callback functions
768 *
769 *********************************************************/
770 void rtl_watchdog_wq_callback(void *data)
771 {
772 struct rtl_works *rtlworks = container_of_dwork_rtl(data,
773 struct rtl_works,
774 watchdog_wq);
775 struct ieee80211_hw *hw = rtlworks->hw;
776 struct rtl_priv *rtlpriv = rtl_priv(hw);
777 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
778 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
779
780 bool b_busytraffic = false;
781 bool b_higher_busytraffic = false;
782 bool b_higher_busyrxtraffic = false;
783 bool b_higher_busytxtraffic = false;
784
785 u8 idx = 0;
786 u32 rx_cnt_inp4eriod = 0;
787 u32 tx_cnt_inp4eriod = 0;
788 u32 aver_rx_cnt_inperiod = 0;
789 u32 aver_tx_cnt_inperiod = 0;
790
791 bool benter_ps = false;
792
793 if (is_hal_stop(rtlhal))
794 return;
795
796 /* <1> Determine if action frame is allowed */
797 if (mac->link_state > MAC80211_NOLINK) {
798 if (mac->cnt_after_linked < 20)
799 mac->cnt_after_linked++;
800 } else {
801 mac->cnt_after_linked = 0;
802 }
803
804 /* <2> DM */
805 rtlpriv->cfg->ops->dm_watchdog(hw);
806
807 /*
808 *<3> to check if traffic busy, if
809 * busytraffic we don't change channel
810 */
811 if (mac->link_state >= MAC80211_LINKED) {
812
813 /* (1) get aver_rx_cnt_inperiod & aver_tx_cnt_inperiod */
814 for (idx = 0; idx <= 2; idx++) {
815 rtlpriv->link_info.num_rx_in4period[idx] =
816 rtlpriv->link_info.num_rx_in4period[idx + 1];
817 rtlpriv->link_info.num_tx_in4period[idx] =
818 rtlpriv->link_info.num_tx_in4period[idx + 1];
819 }
820 rtlpriv->link_info.num_rx_in4period[3] =
821 rtlpriv->link_info.num_rx_inperiod;
822 rtlpriv->link_info.num_tx_in4period[3] =
823 rtlpriv->link_info.num_tx_inperiod;
824 for (idx = 0; idx <= 3; idx++) {
825 rx_cnt_inp4eriod +=
826 rtlpriv->link_info.num_rx_in4period[idx];
827 tx_cnt_inp4eriod +=
828 rtlpriv->link_info.num_tx_in4period[idx];
829 }
830 aver_rx_cnt_inperiod = rx_cnt_inp4eriod / 4;
831 aver_tx_cnt_inperiod = tx_cnt_inp4eriod / 4;
832
833 /* (2) check traffic busy */
834 if (aver_rx_cnt_inperiod > 100 || aver_tx_cnt_inperiod > 100)
835 b_busytraffic = true;
836
837 /* Higher Tx/Rx data. */
838 if (aver_rx_cnt_inperiod > 4000 ||
839 aver_tx_cnt_inperiod > 4000) {
840 b_higher_busytraffic = true;
841
842 /* Extremely high Rx data. */
843 if (aver_rx_cnt_inperiod > 5000)
844 b_higher_busyrxtraffic = true;
845 else
846 b_higher_busytxtraffic = false;
847 }
848
849 if (((rtlpriv->link_info.num_rx_inperiod +
850 rtlpriv->link_info.num_tx_inperiod) > 8) ||
851 (rtlpriv->link_info.num_rx_inperiod > 2))
852 benter_ps = false;
853 else
854 benter_ps = true;
855
856 /* LeisurePS only work in infra mode. */
857 if (benter_ps)
858 rtl_lps_enter(hw);
859 else
860 rtl_lps_leave(hw);
861 }
862
863 rtlpriv->link_info.num_rx_inperiod = 0;
864 rtlpriv->link_info.num_tx_inperiod = 0;
865
866 rtlpriv->link_info.b_busytraffic = b_busytraffic;
867 rtlpriv->link_info.b_higher_busytraffic = b_higher_busytraffic;
868 rtlpriv->link_info.b_higher_busyrxtraffic = b_higher_busyrxtraffic;
869
870 }
871
872 void rtl_watch_dog_timer_callback(unsigned long data)
873 {
874 struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
875 struct rtl_priv *rtlpriv = rtl_priv(hw);
876
877 queue_delayed_work(rtlpriv->works.rtl_wq,
878 &rtlpriv->works.watchdog_wq, 0);
879
880 mod_timer(&rtlpriv->works.watchdog_timer,
881 jiffies + MSECS(RTL_WATCH_DOG_TIME));
882 }
883
884 /*********************************************************
885 *
886 * sysfs functions
887 *
888 *********************************************************/
889 static ssize_t rtl_show_debug_level(struct device *d,
890 struct device_attribute *attr, char *buf)
891 {
892 struct ieee80211_hw *hw = dev_get_drvdata(d);
893 struct rtl_priv *rtlpriv = rtl_priv(hw);
894
895 return sprintf(buf, "0x%08X\n", rtlpriv->dbg.global_debuglevel);
896 }
897
898 static ssize_t rtl_store_debug_level(struct device *d,
899 struct device_attribute *attr,
900 const char *buf, size_t count)
901 {
902 struct ieee80211_hw *hw = dev_get_drvdata(d);
903 struct rtl_priv *rtlpriv = rtl_priv(hw);
904 unsigned long val;
905 int ret;
906
907 ret = strict_strtoul(buf, 0, &val);
908 if (ret) {
909 printk(KERN_DEBUG "%s is not in hex or decimal form.\n", buf);
910 } else {
911 rtlpriv->dbg.global_debuglevel = val;
912 printk(KERN_DEBUG "debuglevel:%x\n",
913 rtlpriv->dbg.global_debuglevel);
914 }
915
916 return strnlen(buf, count);
917 }
918
919 static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
920 rtl_show_debug_level, rtl_store_debug_level);
921
922 static struct attribute *rtl_sysfs_entries[] = {
923
924 &dev_attr_debug_level.attr,
925
926 NULL
927 };
928
929 /*
930 * "name" is folder name witch will be
931 * put in device directory like :
932 * sys/devices/pci0000:00/0000:00:1c.4/
933 * 0000:06:00.0/rtl_sysfs
934 */
935 struct attribute_group rtl_attribute_group = {
936 .name = "rtlsysfs",
937 .attrs = rtl_sysfs_entries,
938 };
939
940 MODULE_AUTHOR("lizhaoming <chaoming_li@realsil.com.cn>");
941 MODULE_AUTHOR("Realtek WlanFAE <wlanfae@realtek.com>");
942 MODULE_AUTHOR("Larry Finger <Larry.FInger@lwfinger.net>");
943 MODULE_LICENSE("GPL");
944 MODULE_DESCRIPTION("Realtek 802.11n PCI wireless core");
945
946 static int __init rtl_core_module_init(void)
947 {
948 return 0;
949 }
950
951 static void __exit rtl_core_module_exit(void)
952 {
953 }
954
955 module_init(rtl_core_module_init);
956 module_exit(rtl_core_module_exit);
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