projects / deliverable / linux.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
ath9k: index out of bounds
[deliverable/linux.git] / drivers / net / wireless / rtlwifi / base.c
CommitLineData
0c817338
LF		 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 *********************************************************/
62static 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
79static 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
94static 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
106static 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
17c9ac62 147 ht_cap->mcs.rx_highest = cpu_to_le16(MAX_BIT_RATE_40MHZ_MCS15);
0c817338
LF		 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
17c9ac62 156 ht_cap->mcs.rx_highest = cpu_to_le16(MAX_BIT_RATE_40MHZ_MCS7);
0c817338
LF		 157 }
158}
159
160static 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
217static 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;
3d986b25 228 rtlpriv->works.rtl_wq = alloc_workqueue(rtlpriv->cfg->name, 0, 0);
0c817338
LF		 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
236void 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
246void 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
0c817338
LF		 254 radio_state = rtlpriv->cfg->ops->radio_onoff_checking(hw, &valid);
255
e6d8a817
LF		 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");
0c817338 260
e6d8a817 261 if (valid) {
0c817338
LF		 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
271void rtl_deinit_rfkill(struct ieee80211_hw *hw)
272{
273 wiphy_rfkill_stop_polling(hw->wiphy);
274}
275
276int 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 */
375ff4c7 286 hw->rate_control_algorithm = "rtl_rc";
0c817338
LF		 287
288 /*
289 * <3> init CRDA must come after init
290 * mac80211 hw in _rtl_init_mac80211.
291 */
292 if (rtl_regd_init(hw, rtl_reg_notifier)) {
293 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, ("REGD init failed\n"));
294 return 1;
295 } else {
296 /* CRDA regd hint must after init CRDA */
297 if (regulatory_hint(hw->wiphy, rtlpriv->regd.alpha2)) {
298 RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING,
299 ("regulatory_hint fail\n"));
300 }
301 }
302
303 /* <4> locks */
8a09d6d8 304 mutex_init(&rtlpriv->locks.conf_mutex);
d704300f 305 spin_lock_init(&rtlpriv->locks.ips_lock);
0c817338
LF		 306 spin_lock_init(&rtlpriv->locks.irq_th_lock);
307 spin_lock_init(&rtlpriv->locks.h2c_lock);
308 spin_lock_init(&rtlpriv->locks.rf_ps_lock);
309 spin_lock_init(&rtlpriv->locks.rf_lock);
310 spin_lock_init(&rtlpriv->locks.lps_lock);
311
312 rtlmac->link_state = MAC80211_NOLINK;
313
314 /* <5> init deferred work */
315 _rtl_init_deferred_work(hw);
316
317 return 0;
318}
319
320void rtl_deinit_core(struct ieee80211_hw *hw)
321{
0c817338
LF		 322}
323
324void rtl_init_rx_config(struct ieee80211_hw *hw)
325{
326 struct rtl_priv *rtlpriv = rtl_priv(hw);
327 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
328
329 rtlpriv->cfg->ops->get_hw_reg(hw, HW_VAR_RCR, (u8 *) (&mac->rx_conf));
330 rtlpriv->cfg->ops->get_hw_reg(hw, HW_VAR_MGT_FILTER,
331 (u8 *) (&mac->rx_mgt_filter));
332 rtlpriv->cfg->ops->get_hw_reg(hw, HW_VAR_CTRL_FILTER,
333 (u8 *) (&mac->rx_ctrl_filter));
334 rtlpriv->cfg->ops->get_hw_reg(hw, HW_VAR_DATA_FILTER,
335 (u8 *) (&mac->rx_data_filter));
336}
337
338/*********************************************************
339 *
340 * tx information functions
341 *
342 *********************************************************/
343static void _rtl_qurey_shortpreamble_mode(struct ieee80211_hw *hw,
344 struct rtl_tcb_desc *tcb_desc,
345 struct ieee80211_tx_info *info)
346{
347 struct rtl_priv *rtlpriv = rtl_priv(hw);
348 u8 rate_flag = info->control.rates[0].flags;
349
350 tcb_desc->use_shortpreamble = false;
351
352 /* 1M can only use Long Preamble. 11B spec */
353 if (tcb_desc->hw_rate == rtlpriv->cfg->maps[RTL_RC_CCK_RATE1M])
354 return;
355 else if (rate_flag & IEEE80211_TX_RC_USE_SHORT_PREAMBLE)
356 tcb_desc->use_shortpreamble = true;
357
358 return;
359}
360
361static void _rtl_query_shortgi(struct ieee80211_hw *hw,
362 struct rtl_tcb_desc *tcb_desc,
363 struct ieee80211_tx_info *info)
364{
365 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
366 u8 rate_flag = info->control.rates[0].flags;
367
368 tcb_desc->use_shortgi = false;
369
370 if (!mac->ht_enable)
371 return;
372
373 if (!mac->sgi_40 && !mac->sgi_20)
374 return;
375
376 if ((mac->bw_40 == true) && mac->sgi_40)
377 tcb_desc->use_shortgi = true;
378 else if ((mac->bw_40 == false) && mac->sgi_20)
379 tcb_desc->use_shortgi = true;
380
381 if (!(rate_flag & IEEE80211_TX_RC_SHORT_GI))
382 tcb_desc->use_shortgi = false;
383
384}
385
386static void _rtl_query_protection_mode(struct ieee80211_hw *hw,
387 struct rtl_tcb_desc *tcb_desc,
388 struct ieee80211_tx_info *info)
389{
390 struct rtl_priv *rtlpriv = rtl_priv(hw);
391 u8 rate_flag = info->control.rates[0].flags;
392
393 /* Common Settings */
7ea47240
LF		 394 tcb_desc->rts_stbc = false;
395 tcb_desc->cts_enable = false;
0c817338 396 tcb_desc->rts_sc = 0;
7ea47240
LF		 397 tcb_desc->rts_bw = false;
398 tcb_desc->rts_use_shortpreamble = false;
399 tcb_desc->rts_use_shortgi = false;
0c817338
LF		 400
401 if (rate_flag & IEEE80211_TX_RC_USE_CTS_PROTECT) {
402 /* Use CTS-to-SELF in protection mode. */
7ea47240
LF		 403 tcb_desc->rts_enable = true;
404 tcb_desc->cts_enable = true;
0c817338
LF		 405 tcb_desc->rts_rate = rtlpriv->cfg->maps[RTL_RC_OFDM_RATE24M];
406 } else if (rate_flag & IEEE80211_TX_RC_USE_RTS_CTS) {
407 /* Use RTS-CTS in protection mode. */
7ea47240 408 tcb_desc->rts_enable = true;
0c817338
LF		 409 tcb_desc->rts_rate = rtlpriv->cfg->maps[RTL_RC_OFDM_RATE24M];
410 }
411
412}
413
414static void _rtl_txrate_selectmode(struct ieee80211_hw *hw,
415 struct rtl_tcb_desc *tcb_desc)
416{
417 struct rtl_priv *rtlpriv = rtl_priv(hw);
418 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
419
420 if (!tcb_desc->disable_ratefallback || !tcb_desc->use_driver_rate) {
421 if (mac->opmode == NL80211_IFTYPE_STATION)
422 tcb_desc->ratr_index = 0;
423 else if (mac->opmode == NL80211_IFTYPE_ADHOC) {
7ea47240 424 if (tcb_desc->multicast || tcb_desc->broadcast) {
0c817338
LF		 425 tcb_desc->hw_rate =
426 rtlpriv->cfg->maps[RTL_RC_CCK_RATE2M];
427 tcb_desc->use_driver_rate = 1;
428 } else {
429 /* TODO */
430 }
431 }
432 }
433
7ea47240 434 if (rtlpriv->dm.useramask) {
32473284 435 /* TODO adhoc and station handled differently in the future */
0c817338
LF		 436 tcb_desc->mac_id = 0;
437
438 if ((mac->mode == WIRELESS_MODE_N_24G) ||
439 (mac->mode == WIRELESS_MODE_N_5G)) {
440 tcb_desc->ratr_index = RATR_INX_WIRELESS_NGB;
441 } else if (mac->mode & WIRELESS_MODE_G) {
442 tcb_desc->ratr_index = RATR_INX_WIRELESS_GB;
443 } else if (mac->mode & WIRELESS_MODE_B) {
444 tcb_desc->ratr_index = RATR_INX_WIRELESS_B;
445 }
446 }
447
448}
449
450static void _rtl_query_bandwidth_mode(struct ieee80211_hw *hw,
451 struct rtl_tcb_desc *tcb_desc)
452{
453 struct rtl_priv *rtlpriv = rtl_priv(hw);
454 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
455
7ea47240 456 tcb_desc->packet_bw = false;
0c817338
LF		 457
458 if (!mac->bw_40 || !mac->ht_enable)
459 return;
460
7ea47240 461 if (tcb_desc->multicast || tcb_desc->broadcast)
0c817338
LF		 462 return;
463
464 /*use legency rate, shall use 20MHz */
465 if (tcb_desc->hw_rate <= rtlpriv->cfg->maps[RTL_RC_OFDM_RATE54M])
466 return;
467
7ea47240 468 tcb_desc->packet_bw = true;
0c817338
LF		 469}
470
471static u8 _rtl_get_highest_n_rate(struct ieee80211_hw *hw)
472{
473 struct rtl_priv *rtlpriv = rtl_priv(hw);
474 struct rtl_phy *rtlphy = &(rtlpriv->phy);
475 u8 hw_rate;
476
477 if (get_rf_type(rtlphy) == RF_2T2R)
478 hw_rate = rtlpriv->cfg->maps[RTL_RC_HT_RATEMCS15];
479 else
480 hw_rate = rtlpriv->cfg->maps[RTL_RC_HT_RATEMCS7];
481
482 return hw_rate;
483}
484
485void rtl_get_tcb_desc(struct ieee80211_hw *hw,
486 struct ieee80211_tx_info *info,
487 struct sk_buff *skb, struct rtl_tcb_desc *tcb_desc)
488{
489 struct rtl_priv *rtlpriv = rtl_priv(hw);
490 struct rtl_mac *rtlmac = rtl_mac(rtl_priv(hw));
491 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)(skb->data);
492 struct ieee80211_rate *txrate;
17c9ac62 493 __le16 fc = hdr->frame_control;
0c817338
LF		 494
495 memset(tcb_desc, 0, sizeof(struct rtl_tcb_desc));
496
497 if (ieee80211_is_data(fc)) {
498 txrate = ieee80211_get_tx_rate(hw, info);
499 tcb_desc->hw_rate = txrate->hw_value;
500
501 /*
502 *we set data rate RTL_RC_CCK_RATE1M
503 *in rtl_rc.c if skb is special data or
504 *mgt which need low data rate.
505 */
506
507 /*
508 *So tcb_desc->hw_rate is just used for
509 *special data and mgt frames
510 */
511 if (tcb_desc->hw_rate < rtlpriv->cfg->maps[RTL_RC_CCK_RATE11M]) {
512 tcb_desc->use_driver_rate = true;
513 tcb_desc->ratr_index = 7;
514
515 tcb_desc->hw_rate =
516 rtlpriv->cfg->maps[RTL_RC_CCK_RATE1M];
517 tcb_desc->disable_ratefallback = 1;
518 } else {
519 /*
520 *because hw will nerver use hw_rate
521 *when tcb_desc->use_driver_rate = false
522 *so we never set highest N rate here,
523 *and N rate will all be controled by FW
524 *when tcb_desc->use_driver_rate = false
525 */
526 if (rtlmac->ht_enable) {
527 tcb_desc->hw_rate = _rtl_get_highest_n_rate(hw);
528 } else {
529 if (rtlmac->mode == WIRELESS_MODE_B) {
530 tcb_desc->hw_rate =
531 rtlpriv->cfg->maps[RTL_RC_CCK_RATE11M];
532 } else {
533 tcb_desc->hw_rate =
534 rtlpriv->cfg->maps[RTL_RC_OFDM_RATE54M];
535 }
536 }
537 }
538
539 if (is_multicast_ether_addr(ieee80211_get_DA(hdr)))
7ea47240 540 tcb_desc->multicast = 1;
0c817338 541 else if (is_broadcast_ether_addr(ieee80211_get_DA(hdr)))
7ea47240 542 tcb_desc->broadcast = 1;
0c817338
LF		 543
544 _rtl_txrate_selectmode(hw, tcb_desc);
545 _rtl_query_bandwidth_mode(hw, tcb_desc);
546 _rtl_qurey_shortpreamble_mode(hw, tcb_desc, info);
547 _rtl_query_shortgi(hw, tcb_desc, info);
548 _rtl_query_protection_mode(hw, tcb_desc, info);
549 } else {
550 tcb_desc->use_driver_rate = true;
551 tcb_desc->ratr_index = 7;
552 tcb_desc->disable_ratefallback = 1;
553 tcb_desc->mac_id = 0;
554
555 tcb_desc->hw_rate = rtlpriv->cfg->maps[RTL_RC_CCK_RATE1M];
556 }
557}
558EXPORT_SYMBOL(rtl_get_tcb_desc);
559
560bool rtl_tx_mgmt_proc(struct ieee80211_hw *hw, struct sk_buff *skb)
561{
562 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
563 struct rtl_priv *rtlpriv = rtl_priv(hw);
564 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)(skb->data);
17c9ac62 565 __le16 fc = hdr->frame_control;
0c817338
LF		 566
567 if (ieee80211_is_auth(fc)) {
568 RT_TRACE(rtlpriv, COMP_SEND, DBG_DMESG, ("MAC80211_LINKING\n"));
569 rtl_ips_nic_on(hw);
570
571 mac->link_state = MAC80211_LINKING;
572 }
573
574 return true;
575}
576
577bool rtl_action_proc(struct ieee80211_hw *hw, struct sk_buff *skb, u8 is_tx)
578{
579 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
580 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)(skb->data);
581 struct rtl_priv *rtlpriv = rtl_priv(hw);
17c9ac62 582 __le16 fc = hdr->frame_control;
0c817338
LF		 583 u8 *act = (u8 *) (((u8 *) skb->data + MAC80211_3ADDR_LEN));
584 u8 category;
585
586 if (!ieee80211_is_action(fc))
587 return true;
588
589 category = *act;
590 act++;
591 switch (category) {
592 case ACT_CAT_BA:
593 switch (*act) {
594 case ACT_ADDBAREQ:
595 if (mac->act_scanning)
596 return false;
597
598 RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV), DBG_DMESG,
599 ("%s ACT_ADDBAREQ From :" MAC_FMT "\n",
600 is_tx ? "Tx" : "Rx", MAC_ARG(hdr->addr2)));
601 break;
602 case ACT_ADDBARSP:
603 RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV), DBG_DMESG,
604 ("%s ACT_ADDBARSP From :" MAC_FMT "\n",
605 is_tx ? "Tx" : "Rx", MAC_ARG(hdr->addr2)));
606 break;
607 case ACT_DELBA:
608 RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV), DBG_DMESG,
609 ("ACT_ADDBADEL From :" MAC_FMT "\n",
610 MAC_ARG(hdr->addr2)));
611 break;
612 }
613 break;
614 default:
615 break;
616 }
617
618 return true;
619}
620
621/*should call before software enc*/
622u8 rtl_is_special_data(struct ieee80211_hw *hw, struct sk_buff *skb, u8 is_tx)
623{
624 struct rtl_priv *rtlpriv = rtl_priv(hw);
625 struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)(skb->data);
626 struct rtl_ps_ctl *ppsc = rtl_psc(rtl_priv(hw));
17c9ac62 627 __le16 fc = hdr->frame_control;
0c817338
LF		 628 u16 ether_type;
629 u8 mac_hdr_len = ieee80211_get_hdrlen_from_skb(skb);
630 const struct iphdr *ip;
631
632 if (!ieee80211_is_data(fc))
32473284 633 return false;
0c817338
LF		 634
635 if (ieee80211_is_nullfunc(fc))
636 return true;
637
638 ip = (struct iphdr *)((u8 *) skb->data + mac_hdr_len +
639 SNAP_SIZE + PROTOC_TYPE_SIZE);
640 ether_type = *(u16 *) ((u8 *) skb->data + mac_hdr_len + SNAP_SIZE);
0c817338
LF		 641
642 if (ETH_P_IP == ether_type) {
643 if (IPPROTO_UDP == ip->protocol) {
644 struct udphdr *udp = (struct udphdr *)((u8 *) ip +
645 (ip->ihl << 2));
646 if (((((u8 *) udp)[1] == 68) &&
647 (((u8 *) udp)[3] == 67)) ||
648 ((((u8 *) udp)[1] == 67) &&
649 (((u8 *) udp)[3] == 68))) {
650 /*
651 * 68 : UDP BOOTP client
652 * 67 : UDP BOOTP server
653 */
654 RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV),
655 DBG_DMESG, ("dhcp %s !!\n",
656 (is_tx) ? "Tx" : "Rx"));
657
658 if (is_tx) {
659 rtl_lps_leave(hw);
660 ppsc->last_delaylps_stamp_jiffies =
661 jiffies;
662 }
663
664 return true;
665 }
666 }
667 } else if (ETH_P_ARP == ether_type) {
668 if (is_tx) {
669 rtl_lps_leave(hw);
670 ppsc->last_delaylps_stamp_jiffies = jiffies;
671 }
672
673 return true;
674 } else if (ETH_P_PAE == ether_type) {
675 RT_TRACE(rtlpriv, (COMP_SEND | COMP_RECV), DBG_DMESG,
676 ("802.1X %s EAPOL pkt!!\n", (is_tx) ? "Tx" : "Rx"));
677
678 if (is_tx) {
679 rtl_lps_leave(hw);
680 ppsc->last_delaylps_stamp_jiffies = jiffies;
681 }
682
683 return true;
17c9ac62
LF		 684 } else if (ETH_P_IPV6 == ether_type) {
685 /* IPv6 */
0c817338
LF		 686 return true;
687 }
688
0c817338
LF		 689 return false;
690}
691
692/*********************************************************
693 *
694 * functions called by core.c
695 *
696 *********************************************************/
697int rtl_tx_agg_start(struct ieee80211_hw *hw, const u8 *ra, u16 tid, u16 *ssn)
698{
699 struct rtl_priv *rtlpriv = rtl_priv(hw);
700 struct rtl_tid_data *tid_data;
701 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
702
703 RT_TRACE(rtlpriv, COMP_SEND, DBG_DMESG,
704 ("on ra = %pM tid = %d\n", ra, tid));
705
706 if (unlikely(tid >= MAX_TID_COUNT))
707 return -EINVAL;
708
709 if (mac->tids[tid].agg.agg_state != RTL_AGG_OFF) {
710 RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING,
711 ("Start AGG when state is not RTL_AGG_OFF !\n"));
712 return -ENXIO;
713 }
714
715 tid_data = &mac->tids[tid];
716 *ssn = SEQ_TO_SN(tid_data->seq_number);
717
718 RT_TRACE(rtlpriv, COMP_SEND, DBG_DMESG,
719 ("HW queue is empty tid:%d\n", tid));
720 tid_data->agg.agg_state = RTL_AGG_ON;
721
722 ieee80211_start_tx_ba_cb_irqsafe(mac->vif, ra, tid);
723
724 return 0;
725}
726
727int rtl_tx_agg_stop(struct ieee80211_hw *hw, const u8 * ra, u16 tid)
728{
729 int ssn = -1;
730 struct rtl_priv *rtlpriv = rtl_priv(hw);
731 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
732 struct rtl_tid_data *tid_data;
733
734 if (!ra) {
735 RT_TRACE(rtlpriv, COMP_ERR, DBG_EMERG, ("ra = NULL\n"));
736 return -EINVAL;
737 }
738
739 if (unlikely(tid >= MAX_TID_COUNT))
740 return -EINVAL;
741
742 if (mac->tids[tid].agg.agg_state != RTL_AGG_ON)
743 RT_TRACE(rtlpriv, COMP_ERR, DBG_WARNING,
744 ("Stopping AGG while state not ON or starting\n"));
745
746 tid_data = &mac->tids[tid];
747 ssn = (tid_data->seq_number & IEEE80211_SCTL_SEQ) >> 4;
748
749 mac->tids[tid].agg.agg_state = RTL_AGG_OFF;
750
751 ieee80211_stop_tx_ba_cb_irqsafe(mac->vif, ra, tid);
752
753 return 0;
754}
755
756/*********************************************************
757 *
758 * wq & timer callback functions
759 *
760 *********************************************************/
761void rtl_watchdog_wq_callback(void *data)
762{
763 struct rtl_works *rtlworks = container_of_dwork_rtl(data,
764 struct rtl_works,
765 watchdog_wq);
766 struct ieee80211_hw *hw = rtlworks->hw;
767 struct rtl_priv *rtlpriv = rtl_priv(hw);
768 struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
769 struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
770
7ea47240
LF		 771 bool busytraffic = false;
772 bool higher_busytraffic = false;
773 bool higher_busyrxtraffic = false;
774 bool higher_busytxtraffic = false;
0c817338
LF		 775
776 u8 idx = 0;
777 u32 rx_cnt_inp4eriod = 0;
778 u32 tx_cnt_inp4eriod = 0;
779 u32 aver_rx_cnt_inperiod = 0;
780 u32 aver_tx_cnt_inperiod = 0;
781
7ea47240 782 bool enter_ps = false;
0c817338
LF		 783
784 if (is_hal_stop(rtlhal))
785 return;
786
787 /* <1> Determine if action frame is allowed */
788 if (mac->link_state > MAC80211_NOLINK) {
789 if (mac->cnt_after_linked < 20)
790 mac->cnt_after_linked++;
791 } else {
792 mac->cnt_after_linked = 0;
793 }
794
795 /* <2> DM */
796 rtlpriv->cfg->ops->dm_watchdog(hw);
797
798 /*
799 *<3> to check if traffic busy, if
800 * busytraffic we don't change channel
801 */
802 if (mac->link_state >= MAC80211_LINKED) {
803
804 /* (1) get aver_rx_cnt_inperiod & aver_tx_cnt_inperiod */
805 for (idx = 0; idx <= 2; idx++) {
806 rtlpriv->link_info.num_rx_in4period[idx] =
807 rtlpriv->link_info.num_rx_in4period[idx + 1];
808 rtlpriv->link_info.num_tx_in4period[idx] =
809 rtlpriv->link_info.num_tx_in4period[idx + 1];
810 }
811 rtlpriv->link_info.num_rx_in4period[3] =
812 rtlpriv->link_info.num_rx_inperiod;
813 rtlpriv->link_info.num_tx_in4period[3] =
814 rtlpriv->link_info.num_tx_inperiod;
815 for (idx = 0; idx <= 3; idx++) {
816 rx_cnt_inp4eriod +=
817 rtlpriv->link_info.num_rx_in4period[idx];
818 tx_cnt_inp4eriod +=
819 rtlpriv->link_info.num_tx_in4period[idx];
820 }
821 aver_rx_cnt_inperiod = rx_cnt_inp4eriod / 4;
822 aver_tx_cnt_inperiod = tx_cnt_inp4eriod / 4;
823
824 /* (2) check traffic busy */
825 if (aver_rx_cnt_inperiod > 100 || aver_tx_cnt_inperiod > 100)
7ea47240 826 busytraffic = true;
0c817338
LF		 827
828 /* Higher Tx/Rx data. */
829 if (aver_rx_cnt_inperiod > 4000 ||
830 aver_tx_cnt_inperiod > 4000) {
7ea47240 831 higher_busytraffic = true;
0c817338
LF		 832
833 /* Extremely high Rx data. */
834 if (aver_rx_cnt_inperiod > 5000)
7ea47240 835 higher_busyrxtraffic = true;
0c817338 836 else
7ea47240 837 higher_busytxtraffic = false;
0c817338
LF		 838 }
839
840 if (((rtlpriv->link_info.num_rx_inperiod +
841 rtlpriv->link_info.num_tx_inperiod) > 8) ||
842 (rtlpriv->link_info.num_rx_inperiod > 2))
7ea47240 843 enter_ps = false;
0c817338 844 else
7ea47240 845 enter_ps = true;
0c817338
LF		 846
847 /* LeisurePS only work in infra mode. */
7ea47240 848 if (enter_ps)
0c817338
LF		 849 rtl_lps_enter(hw);
850 else
851 rtl_lps_leave(hw);
852 }
853
854 rtlpriv->link_info.num_rx_inperiod = 0;
855 rtlpriv->link_info.num_tx_inperiod = 0;
856
7ea47240
LF		 857 rtlpriv->link_info.busytraffic = busytraffic;
858 rtlpriv->link_info.higher_busytraffic = higher_busytraffic;
859 rtlpriv->link_info.higher_busyrxtraffic = higher_busyrxtraffic;
0c817338
LF		 860
861}
862
863void rtl_watch_dog_timer_callback(unsigned long data)
864{
865 struct ieee80211_hw *hw = (struct ieee80211_hw *)data;
866 struct rtl_priv *rtlpriv = rtl_priv(hw);
867
868 queue_delayed_work(rtlpriv->works.rtl_wq,
869 &rtlpriv->works.watchdog_wq, 0);
870
871 mod_timer(&rtlpriv->works.watchdog_timer,
872 jiffies + MSECS(RTL_WATCH_DOG_TIME));
873}
874
875/*********************************************************
876 *
877 * sysfs functions
878 *
879 *********************************************************/
880static ssize_t rtl_show_debug_level(struct device *d,
881 struct device_attribute *attr, char *buf)
882{
883 struct ieee80211_hw *hw = dev_get_drvdata(d);
884 struct rtl_priv *rtlpriv = rtl_priv(hw);
885
886 return sprintf(buf, "0x%08X\n", rtlpriv->dbg.global_debuglevel);
887}
888
889static ssize_t rtl_store_debug_level(struct device *d,
890 struct device_attribute *attr,
891 const char *buf, size_t count)
892{
893 struct ieee80211_hw *hw = dev_get_drvdata(d);
894 struct rtl_priv *rtlpriv = rtl_priv(hw);
895 unsigned long val;
896 int ret;
897
898 ret = strict_strtoul(buf, 0, &val);
899 if (ret) {
900 printk(KERN_DEBUG "%s is not in hex or decimal form.\n", buf);
901 } else {
902 rtlpriv->dbg.global_debuglevel = val;
903 printk(KERN_DEBUG "debuglevel:%x\n",
904 rtlpriv->dbg.global_debuglevel);
905 }
906
907 return strnlen(buf, count);
908}
909
910static DEVICE_ATTR(debug_level, S_IWUSR | S_IRUGO,
911 rtl_show_debug_level, rtl_store_debug_level);
912
913static struct attribute *rtl_sysfs_entries[] = {
914
915 &dev_attr_debug_level.attr,
916
917 NULL
918};
919
920/*
921 * "name" is folder name witch will be
922 * put in device directory like :
923 * sys/devices/pci0000:00/0000:00:1c.4/
924 * 0000:06:00.0/rtl_sysfs
925 */
926struct attribute_group rtl_attribute_group = {
927 .name = "rtlsysfs",
928 .attrs = rtl_sysfs_entries,
929};
930
931MODULE_AUTHOR("lizhaoming <chaoming_li@realsil.com.cn>");
932MODULE_AUTHOR("Realtek WlanFAE <wlanfae@realtek.com>");
933MODULE_AUTHOR("Larry Finger <Larry.FInger@lwfinger.net>");
934MODULE_LICENSE("GPL");
935MODULE_DESCRIPTION("Realtek 802.11n PCI wireless core");
936
937static int __init rtl_core_module_init(void)
938{
375ff4c7
CL		 939 if (rtl_rate_control_register())
940 printk(KERN_ERR "rtlwifi: Unable to register rtl_rc,"
941 "use default RC !!\n");
0c817338
LF		 942 return 0;
943}
944
945static void __exit rtl_core_module_exit(void)
946{
375ff4c7
CL		 947 /*RC*/
948 rtl_rate_control_unregister();
0c817338
LF		 949}
950
951module_init(rtl_core_module_init);
952module_exit(rtl_core_module_exit);
Linux kernel - Deliverables
This page took 0.110406 seconds and 5 git commands to generate.