1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
|
// SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
/* Copyright(c) 2018-2019 Realtek Corporation
*/
#include "main.h"
#include "tx.h"
#include "fw.h"
#include "ps.h"
static
void rtw_tx_stats(struct rtw_dev *rtwdev, struct ieee80211_vif *vif,
struct sk_buff *skb)
{
struct ieee80211_hdr *hdr;
struct rtw_vif *rtwvif;
hdr = (struct ieee80211_hdr *)skb->data;
if (!ieee80211_is_data(hdr->frame_control))
return;
if (!is_broadcast_ether_addr(hdr->addr1) &&
!is_multicast_ether_addr(hdr->addr1)) {
rtwdev->stats.tx_unicast += skb->len;
rtwdev->stats.tx_cnt++;
if (vif) {
rtwvif = (struct rtw_vif *)vif->drv_priv;
rtwvif->stats.tx_unicast += skb->len;
rtwvif->stats.tx_cnt++;
if (rtwvif->stats.tx_cnt > RTW_LPS_THRESHOLD)
rtw_leave_lps_irqsafe(rtwdev, rtwvif);
}
}
}
void rtw_tx_fill_tx_desc(struct rtw_tx_pkt_info *pkt_info, struct sk_buff *skb)
{
__le32 *txdesc = (__le32 *)skb->data;
SET_TX_DESC_TXPKTSIZE(txdesc, pkt_info->tx_pkt_size);
SET_TX_DESC_OFFSET(txdesc, pkt_info->offset);
SET_TX_DESC_PKT_OFFSET(txdesc, pkt_info->pkt_offset);
SET_TX_DESC_QSEL(txdesc, pkt_info->qsel);
SET_TX_DESC_BMC(txdesc, pkt_info->bmc);
SET_TX_DESC_RATE_ID(txdesc, pkt_info->rate_id);
SET_TX_DESC_DATARATE(txdesc, pkt_info->rate);
SET_TX_DESC_DISDATAFB(txdesc, pkt_info->dis_rate_fallback);
SET_TX_DESC_USE_RATE(txdesc, pkt_info->use_rate);
SET_TX_DESC_SEC_TYPE(txdesc, pkt_info->sec_type);
SET_TX_DESC_DATA_BW(txdesc, pkt_info->bw);
SET_TX_DESC_SW_SEQ(txdesc, pkt_info->seq);
SET_TX_DESC_MAX_AGG_NUM(txdesc, pkt_info->ampdu_factor);
SET_TX_DESC_AMPDU_DENSITY(txdesc, pkt_info->ampdu_density);
SET_TX_DESC_DATA_STBC(txdesc, pkt_info->stbc);
SET_TX_DESC_DATA_LDPC(txdesc, pkt_info->ldpc);
SET_TX_DESC_AGG_EN(txdesc, pkt_info->ampdu_en);
SET_TX_DESC_LS(txdesc, pkt_info->ls);
SET_TX_DESC_DATA_SHORT(txdesc, pkt_info->short_gi);
SET_TX_DESC_SPE_RPT(txdesc, pkt_info->report);
SET_TX_DESC_SW_DEFINE(txdesc, pkt_info->sn);
}
EXPORT_SYMBOL(rtw_tx_fill_tx_desc);
static u8 get_tx_ampdu_factor(struct ieee80211_sta *sta)
{
u8 exp = sta->ht_cap.ampdu_factor;
/* the least ampdu factor is 8K, and the value in the tx desc is the
* max aggregation num, which represents val * 2 packets can be
* aggregated in an AMPDU, so here we should use 8/2=4 as the base
*/
return (BIT(2) << exp) - 1;
}
static u8 get_tx_ampdu_density(struct ieee80211_sta *sta)
{
return sta->ht_cap.ampdu_density;
}
static u8 get_highest_ht_tx_rate(struct rtw_dev *rtwdev,
struct ieee80211_sta *sta)
{
u8 rate;
if (rtwdev->hal.rf_type == RF_2T2R && sta->ht_cap.mcs.rx_mask[1] != 0)
rate = DESC_RATEMCS15;
else
rate = DESC_RATEMCS7;
return rate;
}
static u8 get_highest_vht_tx_rate(struct rtw_dev *rtwdev,
struct ieee80211_sta *sta)
{
struct rtw_efuse *efuse = &rtwdev->efuse;
u8 rate;
u16 tx_mcs_map;
tx_mcs_map = le16_to_cpu(sta->vht_cap.vht_mcs.tx_mcs_map);
if (efuse->hw_cap.nss == 1) {
switch (tx_mcs_map & 0x3) {
case IEEE80211_VHT_MCS_SUPPORT_0_7:
rate = DESC_RATEVHT1SS_MCS7;
break;
case IEEE80211_VHT_MCS_SUPPORT_0_8:
rate = DESC_RATEVHT1SS_MCS8;
break;
default:
case IEEE80211_VHT_MCS_SUPPORT_0_9:
rate = DESC_RATEVHT1SS_MCS9;
break;
}
} else if (efuse->hw_cap.nss >= 2) {
switch ((tx_mcs_map & 0xc) >> 2) {
case IEEE80211_VHT_MCS_SUPPORT_0_7:
rate = DESC_RATEVHT2SS_MCS7;
break;
case IEEE80211_VHT_MCS_SUPPORT_0_8:
rate = DESC_RATEVHT2SS_MCS8;
break;
default:
case IEEE80211_VHT_MCS_SUPPORT_0_9:
rate = DESC_RATEVHT2SS_MCS9;
break;
}
} else {
rate = DESC_RATEVHT1SS_MCS9;
}
return rate;
}
static void rtw_tx_report_enable(struct rtw_dev *rtwdev,
struct rtw_tx_pkt_info *pkt_info)
{
struct rtw_tx_report *tx_report = &rtwdev->tx_report;
/* [11:8], reserved, fills with zero
* [7:2], tx report sequence number
* [1:0], firmware use, fills with zero
*/
pkt_info->sn = (atomic_inc_return(&tx_report->sn) << 2) & 0xfc;
pkt_info->report = true;
}
void rtw_tx_report_purge_timer(struct timer_list *t)
{
struct rtw_dev *rtwdev = from_timer(rtwdev, t, tx_report.purge_timer);
struct rtw_tx_report *tx_report = &rtwdev->tx_report;
unsigned long flags;
if (skb_queue_len(&tx_report->queue) == 0)
return;
WARN(1, "purge skb(s) not reported by firmware\n");
spin_lock_irqsave(&tx_report->q_lock, flags);
skb_queue_purge(&tx_report->queue);
spin_unlock_irqrestore(&tx_report->q_lock, flags);
}
void rtw_tx_report_enqueue(struct rtw_dev *rtwdev, struct sk_buff *skb, u8 sn)
{
struct rtw_tx_report *tx_report = &rtwdev->tx_report;
unsigned long flags;
u8 *drv_data;
/* pass sn to tx report handler through driver data */
drv_data = (u8 *)IEEE80211_SKB_CB(skb)->status.status_driver_data;
*drv_data = sn;
spin_lock_irqsave(&tx_report->q_lock, flags);
__skb_queue_tail(&tx_report->queue, skb);
spin_unlock_irqrestore(&tx_report->q_lock, flags);
mod_timer(&tx_report->purge_timer, jiffies + RTW_TX_PROBE_TIMEOUT);
}
EXPORT_SYMBOL(rtw_tx_report_enqueue);
static void rtw_tx_report_tx_status(struct rtw_dev *rtwdev,
struct sk_buff *skb, bool acked)
{
struct ieee80211_tx_info *info;
info = IEEE80211_SKB_CB(skb);
ieee80211_tx_info_clear_status(info);
if (acked)
info->flags |= IEEE80211_TX_STAT_ACK;
else
info->flags &= ~IEEE80211_TX_STAT_ACK;
ieee80211_tx_status_irqsafe(rtwdev->hw, skb);
}
void rtw_tx_report_handle(struct rtw_dev *rtwdev, struct sk_buff *skb)
{
struct rtw_tx_report *tx_report = &rtwdev->tx_report;
struct rtw_c2h_cmd *c2h;
struct sk_buff *cur, *tmp;
unsigned long flags;
u8 sn, st;
u8 *n;
c2h = get_c2h_from_skb(skb);
sn = GET_CCX_REPORT_SEQNUM(c2h->payload);
st = GET_CCX_REPORT_STATUS(c2h->payload);
spin_lock_irqsave(&tx_report->q_lock, flags);
skb_queue_walk_safe(&tx_report->queue, cur, tmp) {
n = (u8 *)IEEE80211_SKB_CB(cur)->status.status_driver_data;
if (*n == sn) {
__skb_unlink(cur, &tx_report->queue);
rtw_tx_report_tx_status(rtwdev, cur, st == 0);
break;
}
}
spin_unlock_irqrestore(&tx_report->q_lock, flags);
}
static void rtw_tx_mgmt_pkt_info_update(struct rtw_dev *rtwdev,
struct rtw_tx_pkt_info *pkt_info,
struct ieee80211_tx_control *control,
struct sk_buff *skb)
{
pkt_info->use_rate = true;
pkt_info->rate_id = 6;
pkt_info->dis_rate_fallback = true;
}
static void rtw_tx_data_pkt_info_update(struct rtw_dev *rtwdev,
struct rtw_tx_pkt_info *pkt_info,
struct ieee80211_tx_control *control,
struct sk_buff *skb)
{
struct ieee80211_sta *sta = control->sta;
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
struct rtw_sta_info *si;
u16 seq;
u8 ampdu_factor = 0;
u8 ampdu_density = 0;
bool ampdu_en = false;
u8 rate = DESC_RATE6M;
u8 rate_id = 6;
u8 bw = RTW_CHANNEL_WIDTH_20;
bool stbc = false;
bool ldpc = false;
seq = (le16_to_cpu(hdr->seq_ctrl) & IEEE80211_SCTL_SEQ) >> 4;
/* for broadcast/multicast, use default values */
if (!sta)
goto out;
if (info->flags & IEEE80211_TX_CTL_AMPDU) {
ampdu_en = true;
ampdu_factor = get_tx_ampdu_factor(sta);
ampdu_density = get_tx_ampdu_density(sta);
}
if (sta->vht_cap.vht_supported)
rate = get_highest_vht_tx_rate(rtwdev, sta);
else if (sta->ht_cap.ht_supported)
rate = get_highest_ht_tx_rate(rtwdev, sta);
else if (sta->supp_rates[0] <= 0xf)
rate = DESC_RATE11M;
else
rate = DESC_RATE54M;
si = (struct rtw_sta_info *)sta->drv_priv;
bw = si->bw_mode;
rate_id = si->rate_id;
stbc = si->stbc_en;
ldpc = si->ldpc_en;
out:
pkt_info->seq = seq;
pkt_info->ampdu_factor = ampdu_factor;
pkt_info->ampdu_density = ampdu_density;
pkt_info->ampdu_en = ampdu_en;
pkt_info->rate = rate;
pkt_info->rate_id = rate_id;
pkt_info->bw = bw;
pkt_info->stbc = stbc;
pkt_info->ldpc = ldpc;
}
void rtw_tx_pkt_info_update(struct rtw_dev *rtwdev,
struct rtw_tx_pkt_info *pkt_info,
struct ieee80211_tx_control *control,
struct sk_buff *skb)
{
struct rtw_chip_info *chip = rtwdev->chip;
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
struct rtw_sta_info *si;
struct ieee80211_vif *vif = NULL;
__le16 fc = hdr->frame_control;
u8 sec_type = 0;
bool bmc;
if (control->sta) {
si = (struct rtw_sta_info *)control->sta->drv_priv;
vif = si->vif;
}
if (ieee80211_is_mgmt(fc) || ieee80211_is_nullfunc(fc))
rtw_tx_mgmt_pkt_info_update(rtwdev, pkt_info, control, skb);
else if (ieee80211_is_data(fc))
rtw_tx_data_pkt_info_update(rtwdev, pkt_info, control, skb);
if (info->control.hw_key) {
struct ieee80211_key_conf *key = info->control.hw_key;
switch (key->cipher) {
case WLAN_CIPHER_SUITE_WEP40:
case WLAN_CIPHER_SUITE_WEP104:
case WLAN_CIPHER_SUITE_TKIP:
sec_type = 0x01;
break;
case WLAN_CIPHER_SUITE_CCMP:
sec_type = 0x03;
break;
default:
break;
}
}
bmc = is_broadcast_ether_addr(hdr->addr1) ||
is_multicast_ether_addr(hdr->addr1);
if (info->flags & IEEE80211_TX_CTL_REQ_TX_STATUS)
rtw_tx_report_enable(rtwdev, pkt_info);
pkt_info->bmc = bmc;
pkt_info->sec_type = sec_type;
pkt_info->tx_pkt_size = skb->len;
pkt_info->offset = chip->tx_pkt_desc_sz;
pkt_info->qsel = skb->priority;
pkt_info->ls = true;
/* maybe merge with tx status ? */
rtw_tx_stats(rtwdev, vif, skb);
}
void rtw_rsvd_page_pkt_info_update(struct rtw_dev *rtwdev,
struct rtw_tx_pkt_info *pkt_info,
struct sk_buff *skb)
{
struct rtw_chip_info *chip = rtwdev->chip;
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
bool bmc;
bmc = is_broadcast_ether_addr(hdr->addr1) ||
is_multicast_ether_addr(hdr->addr1);
pkt_info->use_rate = true;
pkt_info->rate_id = 6;
pkt_info->dis_rate_fallback = true;
pkt_info->bmc = bmc;
pkt_info->tx_pkt_size = skb->len;
pkt_info->offset = chip->tx_pkt_desc_sz;
pkt_info->qsel = TX_DESC_QSEL_MGMT;
pkt_info->ls = true;
}
|
