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26#include "wifi.h"
27#include "base.h"
28#include "rc.h"
29
30
31
32
33
34
35
36
37static u8 _rtl_rc_get_highest_rix(struct rtl_priv *rtlpriv,
38 struct ieee80211_sta *sta,
39 struct sk_buff *skb, bool not_data)
40{
41 struct rtl_hal *rtlhal = rtl_hal(rtlpriv);
42 struct rtl_phy *rtlphy = &(rtlpriv->phy);
43 struct rtl_sta_info *sta_entry = NULL;
44 u8 wireless_mode = 0;
45
46
47
48
49
50
51
52
53
54 if (sta) {
55 sta_entry = (struct rtl_sta_info *)sta->drv_priv;
56 wireless_mode = sta_entry->wireless_mode;
57 }
58
59 if (rtl92e_is_special_data(rtlpriv->mac80211.hw, skb, true) ||
60 not_data) {
61 return 0;
62 } else {
63 if (rtlhal->current_bandtype == BAND_ON_2_4G) {
64 if (wireless_mode == WIRELESS_MODE_B) {
65 return B_MODE_MAX_RIX;
66 } else if (wireless_mode == WIRELESS_MODE_G) {
67 return G_MODE_MAX_RIX;
68 } else if (wireless_mode == WIRELESS_MODE_N_24G) {
69 if (get_rf_type(rtlphy) != RF_2T2R)
70 return N_MODE_MCS7_RIX;
71 else
72 return N_MODE_MCS15_RIX;
73 } else if (wireless_mode == WIRELESS_MODE_AC_24G) {
74 return AC_MODE_MCS9_RIX;
75 } else {
76 return 0;
77 }
78 } else {
79 if (wireless_mode == WIRELESS_MODE_A) {
80 return A_MODE_MAX_RIX;
81 } else if (wireless_mode == WIRELESS_MODE_N_5G) {
82 if (get_rf_type(rtlphy) != RF_2T2R)
83 return N_MODE_MCS7_RIX;
84 else
85 return N_MODE_MCS15_RIX;
86 } else if (wireless_mode == WIRELESS_MODE_AC_5G) {
87 return AC_MODE_MCS9_RIX;
88 } else {
89 return 0;
90 }
91 }
92 }
93}
94
95static void _rtl_rc_rate_set_series(struct rtl_priv *rtlpriv,
96 struct ieee80211_sta *sta,
97 struct ieee80211_tx_rate *rate,
98 struct ieee80211_tx_rate_control *txrc,
99 u8 tries, char rix, int rtsctsenable,
100 bool not_data)
101{
102 struct rtl_mac *mac = rtl_mac(rtlpriv);
103 u8 sgi_20 = 0, sgi_40 = 0, sgi_80 = 0;
104
105 if (sta) {
106 sgi_20 = sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_20;
107 sgi_40 = sta->ht_cap.cap & IEEE80211_HT_CAP_SGI_40;
108 sgi_80 = sta->vht_cap.cap & IEEE80211_VHT_CAP_SHORT_GI_80;
109 }
110 rate->count = tries;
111 rate->idx = rix >= 0x00 ? rix : 0x00;
112
113 if (!not_data) {
114 if (txrc->short_preamble)
115 rate->flags |= IEEE80211_TX_RC_USE_SHORT_PREAMBLE;
116 if (mac->opmode == NL80211_IFTYPE_AP ||
117 mac->opmode == NL80211_IFTYPE_ADHOC) {
118 if (sta && (sta->ht_cap.cap &
119 IEEE80211_HT_CAP_SUP_WIDTH_20_40))
120 rate->flags |= IEEE80211_TX_RC_40_MHZ_WIDTH;
121 if (sta && (sta->vht_cap.vht_supported))
122 rate->flags |= IEEE80211_TX_RC_80_MHZ_WIDTH;
123 } else {
124 if (mac->bw_40)
125 rate->flags |= IEEE80211_TX_RC_40_MHZ_WIDTH;
126 if (mac->bw_80)
127 rate->flags |= IEEE80211_TX_RC_80_MHZ_WIDTH;
128 }
129
130 if (sgi_20 || sgi_40 || sgi_80)
131 rate->flags |= IEEE80211_TX_RC_SHORT_GI;
132 if (sta && sta->ht_cap.ht_supported)
133 rate->flags |= IEEE80211_TX_RC_MCS;
134 if (sta && sta->vht_cap.vht_supported)
135 rate->flags |= IEEE80211_TX_RC_VHT_MCS;
136 }
137}
138
139static void rtl_get_rate(void *ppriv, struct ieee80211_sta *sta,
140 void *priv_sta,
141 struct ieee80211_tx_rate_control *txrc)
142{
143 struct rtl_priv *rtlpriv = ppriv;
144 struct sk_buff *skb = txrc->skb;
145 struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb);
146 struct ieee80211_tx_rate *rates = tx_info->control.rates;
147 __le16 fc = rtl_get_fc(skb);
148 u8 try_per_rate, i, rix;
149 bool not_data = !ieee80211_is_data(fc);
150
151 if (rate_control_send_low(sta, priv_sta, txrc))
152 return;
153
154 rix = _rtl_rc_get_highest_rix(rtlpriv, sta, skb, not_data);
155 try_per_rate = 1;
156 _rtl_rc_rate_set_series(rtlpriv, sta, &rates[0], txrc,
157 try_per_rate, rix, 1, not_data);
158
159 if (!not_data) {
160 for (i = 1; i < 4; i++)
161 _rtl_rc_rate_set_series(rtlpriv, sta, &rates[i],
162 txrc, i, (rix - i), 1,
163 not_data);
164 }
165}
166
167static bool _rtl_tx_aggr_check(struct rtl_priv *rtlpriv,
168 struct rtl_sta_info *sta_entry, u16 tid)
169{
170 struct rtl_mac *mac = rtl_mac(rtlpriv);
171
172 if (mac->act_scanning)
173 return false;
174
175 if (mac->opmode == NL80211_IFTYPE_STATION &&
176 mac->cnt_after_linked < 3)
177 return false;
178
179 if (sta_entry->tids[tid].agg.agg_state == RTL_AGG_STOP)
180 return true;
181
182 return false;
183}
184
185
186static void rtl_tx_status(void *ppriv,
187 struct ieee80211_supported_band *sband,
188 struct ieee80211_sta *sta, void *priv_sta,
189 struct sk_buff *skb)
190{
191 struct rtl_priv *rtlpriv = ppriv;
192 struct rtl_mac *mac = rtl_mac(rtlpriv);
193 struct ieee80211_hdr *hdr = rtl_get_hdr(skb);
194 __le16 fc = rtl_get_fc(skb);
195 struct rtl_sta_info *sta_entry;
196
197 if (!priv_sta || !ieee80211_is_data(fc))
198 return;
199
200 if (rtl92e_is_special_data(mac->hw, skb, true))
201 return;
202
203 if (is_multicast_ether_addr(ieee80211_get_DA(hdr)) ||
204 is_broadcast_ether_addr(ieee80211_get_DA(hdr)))
205 return;
206
207 if (sta) {
208
209 sta_entry = (struct rtl_sta_info *)sta->drv_priv;
210 if ((sta->ht_cap.ht_supported) &&
211 !(skb->protocol == cpu_to_be16(ETH_P_PAE))) {
212 if (ieee80211_is_data_qos(fc)) {
213 u8 tid = rtl_get_tid(skb);
214 if (_rtl_tx_aggr_check(rtlpriv, sta_entry,
215 tid)) {
216 sta_entry->tids[tid].agg.agg_state =
217 RTL_AGG_PROGRESS;
218 ieee80211_start_tx_ba_session(sta, tid,
219 5000);
220 }
221 }
222 }
223 }
224}
225
226static void rtl_rate_init(void *ppriv,
227 struct ieee80211_supported_band *sband,
228 struct cfg80211_chan_def *chandef,
229 struct ieee80211_sta *sta, void *priv_sta)
230{
231}
232
233static void *rtl_rate_alloc(struct ieee80211_hw *hw, struct dentry *debugfsdir)
234{
235 struct rtl_priv *rtlpriv = rtl_priv(hw);
236 return rtlpriv;
237}
238
239static void rtl_rate_free(void *rtlpriv)
240{
241 return;
242}
243
244static void *rtl_rate_alloc_sta(void *ppriv,
245 struct ieee80211_sta *sta, gfp_t gfp)
246{
247 struct rtl_priv *rtlpriv = ppriv;
248 struct rtl_rate_priv *rate_priv;
249
250 rate_priv = kzalloc(sizeof(*rate_priv), gfp);
251 if (!rate_priv) {
252 RT_TRACE(COMP_ERR, DBG_EMERG,
253 ("Unable to allocate private rc structure\n"));
254 return NULL;
255 }
256
257 rtlpriv->rate_priv = rate_priv;
258
259 return rate_priv;
260}
261
262static void rtl_rate_free_sta(void *rtlpriv,
263 struct ieee80211_sta *sta, void *priv_sta)
264{
265 struct rtl_rate_priv *rate_priv = priv_sta;
266 kfree(rate_priv);
267}
268
269static struct rate_control_ops rtl_rate_ops = {
270 .name = "rtl_rc_92e",
271 .alloc = rtl_rate_alloc,
272 .free = rtl_rate_free,
273 .alloc_sta = rtl_rate_alloc_sta,
274 .free_sta = rtl_rate_free_sta,
275 .rate_init = rtl_rate_init,
276 .tx_status = rtl_tx_status,
277 .get_rate = rtl_get_rate,
278};
279
280int rtl92e_rate_control_register(void)
281{
282 return ieee80211_rate_control_register(&rtl_rate_ops);
283}
284
285void rtl92e_rate_control_unregister(void)
286{
287 ieee80211_rate_control_unregister(&rtl_rate_ops);
288}
289
