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
|
/*
* Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include "mt76x2.h"
#include "mt76x2_dma.h"
struct beacon_bc_data {
struct mt76x2_dev *dev;
struct sk_buff_head q;
struct sk_buff *tail[8];
};
void mt76x2_tx(struct ieee80211_hw *hw, struct ieee80211_tx_control *control,
struct sk_buff *skb)
{
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
struct mt76x2_dev *dev = hw->priv;
struct ieee80211_vif *vif = info->control.vif;
struct mt76_wcid *wcid = &dev->global_wcid;
if (control->sta) {
struct mt76x2_sta *msta;
msta = (struct mt76x2_sta *) control->sta->drv_priv;
wcid = &msta->wcid;
/* sw encrypted frames */
if (!info->control.hw_key && wcid->hw_key_idx != -1)
control->sta = NULL;
}
if (vif && !control->sta) {
struct mt76x2_vif *mvif;
mvif = (struct mt76x2_vif *) vif->drv_priv;
wcid = &mvif->group_wcid;
}
mt76_tx(&dev->mt76, control->sta, wcid, skb);
}
void mt76x2_tx_complete(struct mt76x2_dev *dev, struct sk_buff *skb)
{
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
if (info->flags & IEEE80211_TX_CTL_AMPDU) {
ieee80211_free_txskb(mt76_hw(dev), skb);
} else {
ieee80211_tx_info_clear_status(info);
info->status.rates[0].idx = -1;
info->flags |= IEEE80211_TX_STAT_ACK;
ieee80211_tx_status(mt76_hw(dev), skb);
}
}
s8 mt76x2_tx_get_max_txpwr_adj(struct mt76x2_dev *dev,
const struct ieee80211_tx_rate *rate)
{
s8 max_txpwr;
if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
u8 mcs = ieee80211_rate_get_vht_mcs(rate);
if (mcs == 8 || mcs == 9) {
max_txpwr = dev->rate_power.vht[8];
} else {
u8 nss, idx;
nss = ieee80211_rate_get_vht_nss(rate);
idx = ((nss - 1) << 3) + mcs;
max_txpwr = dev->rate_power.ht[idx & 0xf];
}
} else if (rate->flags & IEEE80211_TX_RC_MCS) {
max_txpwr = dev->rate_power.ht[rate->idx & 0xf];
} else {
enum nl80211_band band = dev->mt76.chandef.chan->band;
if (band == NL80211_BAND_2GHZ) {
const struct ieee80211_rate *r;
struct wiphy *wiphy = mt76_hw(dev)->wiphy;
struct mt76_rate_power *rp = &dev->rate_power;
r = &wiphy->bands[band]->bitrates[rate->idx];
if (r->flags & IEEE80211_RATE_SHORT_PREAMBLE)
max_txpwr = rp->cck[r->hw_value & 0x3];
else
max_txpwr = rp->ofdm[r->hw_value & 0x7];
} else {
max_txpwr = dev->rate_power.ofdm[rate->idx & 0x7];
}
}
return max_txpwr;
}
s8 mt76x2_tx_get_txpwr_adj(struct mt76x2_dev *dev, s8 txpwr, s8 max_txpwr_adj)
{
txpwr = min_t(s8, txpwr, dev->txpower_conf);
txpwr -= (dev->target_power + dev->target_power_delta[0]);
txpwr = min_t(s8, txpwr, max_txpwr_adj);
if (!dev->enable_tpc)
return 0;
else if (txpwr >= 0)
return min_t(s8, txpwr, 7);
else
return (txpwr < -16) ? 8 : (txpwr + 32) / 2;
}
void mt76x2_tx_set_txpwr_auto(struct mt76x2_dev *dev, s8 txpwr)
{
s8 txpwr_adj;
txpwr_adj = mt76x2_tx_get_txpwr_adj(dev, txpwr,
dev->rate_power.ofdm[4]);
mt76_rmw_field(dev, MT_PROT_AUTO_TX_CFG,
MT_PROT_AUTO_TX_CFG_PROT_PADJ, txpwr_adj);
mt76_rmw_field(dev, MT_PROT_AUTO_TX_CFG,
MT_PROT_AUTO_TX_CFG_AUTO_PADJ, txpwr_adj);
}
static int mt76x2_insert_hdr_pad(struct sk_buff *skb)
{
int len = ieee80211_get_hdrlen_from_skb(skb);
if (len % 4 == 0)
return 0;
skb_push(skb, 2);
memmove(skb->data, skb->data + 2, len);
skb->data[len] = 0;
skb->data[len + 1] = 0;
return 2;
}
int mt76x2_tx_prepare_skb(struct mt76_dev *mdev, void *txwi,
struct sk_buff *skb, struct mt76_queue *q,
struct mt76_wcid *wcid, struct ieee80211_sta *sta,
u32 *tx_info)
{
struct mt76x2_dev *dev = container_of(mdev, struct mt76x2_dev, mt76);
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
int qsel = MT_QSEL_EDCA;
int ret;
if (q == &dev->mt76.q_tx[MT_TXQ_PSD] && wcid && wcid->idx < 128)
mt76x2_mac_wcid_set_drop(dev, wcid->idx, false);
mt76x2_mac_write_txwi(dev, txwi, skb, wcid, sta);
ret = mt76x2_insert_hdr_pad(skb);
if (ret < 0)
return ret;
if (info->flags & IEEE80211_TX_CTL_RATE_CTRL_PROBE)
qsel = MT_QSEL_MGMT;
*tx_info = FIELD_PREP(MT_TXD_INFO_QSEL, qsel) |
MT_TXD_INFO_80211;
if (!wcid || wcid->hw_key_idx == 0xff || wcid->sw_iv)
*tx_info |= MT_TXD_INFO_WIV;
return 0;
}
static void
mt76x2_update_beacon_iter(void *priv, u8 *mac, struct ieee80211_vif *vif)
{
struct mt76x2_dev *dev = (struct mt76x2_dev *) priv;
struct mt76x2_vif *mvif = (struct mt76x2_vif *) vif->drv_priv;
struct sk_buff *skb = NULL;
if (!(dev->beacon_mask & BIT(mvif->idx)))
return;
skb = ieee80211_beacon_get(mt76_hw(dev), vif);
if (!skb)
return;
mt76x2_mac_set_beacon(dev, mvif->idx, skb);
}
static void
mt76x2_add_buffered_bc(void *priv, u8 *mac, struct ieee80211_vif *vif)
{
struct beacon_bc_data *data = priv;
struct mt76x2_dev *dev = data->dev;
struct mt76x2_vif *mvif = (struct mt76x2_vif *) vif->drv_priv;
struct ieee80211_tx_info *info;
struct sk_buff *skb;
if (!(dev->beacon_mask & BIT(mvif->idx)))
return;
skb = ieee80211_get_buffered_bc(mt76_hw(dev), vif);
if (!skb)
return;
info = IEEE80211_SKB_CB(skb);
info->control.vif = vif;
info->flags |= IEEE80211_TX_CTL_ASSIGN_SEQ;
mt76_skb_set_moredata(skb, true);
__skb_queue_tail(&data->q, skb);
data->tail[mvif->idx] = skb;
}
void mt76x2_pre_tbtt_tasklet(unsigned long arg)
{
struct mt76x2_dev *dev = (struct mt76x2_dev *) arg;
struct mt76_queue *q = &dev->mt76.q_tx[MT_TXQ_PSD];
struct beacon_bc_data data = {};
struct sk_buff *skb;
int i, nframes;
data.dev = dev;
__skb_queue_head_init(&data.q);
ieee80211_iterate_active_interfaces_atomic(mt76_hw(dev),
IEEE80211_IFACE_ITER_RESUME_ALL,
mt76x2_update_beacon_iter, dev);
do {
nframes = skb_queue_len(&data.q);
ieee80211_iterate_active_interfaces_atomic(mt76_hw(dev),
IEEE80211_IFACE_ITER_RESUME_ALL,
mt76x2_add_buffered_bc, &data);
} while (nframes != skb_queue_len(&data.q));
if (!nframes)
return;
for (i = 0; i < ARRAY_SIZE(data.tail); i++) {
if (!data.tail[i])
continue;
mt76_skb_set_moredata(data.tail[i], false);
}
spin_lock_bh(&q->lock);
while ((skb = __skb_dequeue(&data.q)) != NULL) {
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
struct ieee80211_vif *vif = info->control.vif;
struct mt76x2_vif *mvif = (struct mt76x2_vif *) vif->drv_priv;
mt76_tx_queue_skb(&dev->mt76, q, skb, &mvif->group_wcid, NULL);
}
spin_unlock_bh(&q->lock);
}
|