1 // SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause
2 /*
3 * Copyright (C) 2017 Intel Deutschland GmbH
4 * Copyright (C) 2018-2021 Intel Corporation
5 */
6 #include "rs.h"
7 #include "fw-api.h"
8 #include "sta.h"
9 #include "iwl-op-mode.h"
10 #include "mvm.h"
11
rs_fw_bw_from_sta_bw(struct ieee80211_sta * sta)12 static u8 rs_fw_bw_from_sta_bw(struct ieee80211_sta *sta)
13 {
14 switch (sta->bandwidth) {
15 case IEEE80211_STA_RX_BW_160:
16 return IWL_TLC_MNG_CH_WIDTH_160MHZ;
17 case IEEE80211_STA_RX_BW_80:
18 return IWL_TLC_MNG_CH_WIDTH_80MHZ;
19 case IEEE80211_STA_RX_BW_40:
20 return IWL_TLC_MNG_CH_WIDTH_40MHZ;
21 case IEEE80211_STA_RX_BW_20:
22 default:
23 return IWL_TLC_MNG_CH_WIDTH_20MHZ;
24 }
25 }
26
rs_fw_set_active_chains(u8 chains)27 static u8 rs_fw_set_active_chains(u8 chains)
28 {
29 u8 fw_chains = 0;
30
31 if (chains & ANT_A)
32 fw_chains |= IWL_TLC_MNG_CHAIN_A_MSK;
33 if (chains & ANT_B)
34 fw_chains |= IWL_TLC_MNG_CHAIN_B_MSK;
35 if (chains & ANT_C)
36 WARN(false,
37 "tlc offload doesn't support antenna C. chains: 0x%x\n",
38 chains);
39
40 return fw_chains;
41 }
42
rs_fw_sgi_cw_support(struct ieee80211_sta * sta)43 static u8 rs_fw_sgi_cw_support(struct ieee80211_sta *sta)
44 {
45 struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap;
46 struct ieee80211_sta_vht_cap *vht_cap = &sta->vht_cap;
47 struct ieee80211_sta_he_cap *he_cap = &sta->he_cap;
48 u8 supp = 0;
49
50 if (he_cap->has_he)
51 return 0;
52
53 if (ht_cap->cap & IEEE80211_HT_CAP_SGI_20)
54 supp |= BIT(IWL_TLC_MNG_CH_WIDTH_20MHZ);
55 if (ht_cap->cap & IEEE80211_HT_CAP_SGI_40)
56 supp |= BIT(IWL_TLC_MNG_CH_WIDTH_40MHZ);
57 if (vht_cap->cap & IEEE80211_VHT_CAP_SHORT_GI_80)
58 supp |= BIT(IWL_TLC_MNG_CH_WIDTH_80MHZ);
59 if (vht_cap->cap & IEEE80211_VHT_CAP_SHORT_GI_160)
60 supp |= BIT(IWL_TLC_MNG_CH_WIDTH_160MHZ);
61
62 return supp;
63 }
64
rs_fw_get_config_flags(struct iwl_mvm * mvm,struct ieee80211_sta * sta,struct ieee80211_supported_band * sband)65 static u16 rs_fw_get_config_flags(struct iwl_mvm *mvm,
66 struct ieee80211_sta *sta,
67 struct ieee80211_supported_band *sband)
68 {
69 struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap;
70 struct ieee80211_sta_vht_cap *vht_cap = &sta->vht_cap;
71 struct ieee80211_sta_he_cap *he_cap = &sta->he_cap;
72 bool vht_ena = vht_cap->vht_supported;
73 u16 flags = 0;
74
75 /* get STBC flags */
76 if (mvm->cfg->ht_params->stbc &&
77 (num_of_ant(iwl_mvm_get_valid_tx_ant(mvm)) > 1)) {
78 if (he_cap->has_he && he_cap->he_cap_elem.phy_cap_info[2] &
79 IEEE80211_HE_PHY_CAP2_STBC_RX_UNDER_80MHZ)
80 flags |= IWL_TLC_MNG_CFG_FLAGS_STBC_MSK;
81 else if (vht_cap->cap & IEEE80211_VHT_CAP_RXSTBC_MASK)
82 flags |= IWL_TLC_MNG_CFG_FLAGS_STBC_MSK;
83 else if (ht_cap->cap & IEEE80211_HT_CAP_RX_STBC)
84 flags |= IWL_TLC_MNG_CFG_FLAGS_STBC_MSK;
85 }
86
87 if (mvm->cfg->ht_params->ldpc &&
88 ((ht_cap->cap & IEEE80211_HT_CAP_LDPC_CODING) ||
89 (vht_ena && (vht_cap->cap & IEEE80211_VHT_CAP_RXLDPC))))
90 flags |= IWL_TLC_MNG_CFG_FLAGS_LDPC_MSK;
91
92 /* consider LDPC support in case of HE */
93 if (he_cap->has_he && (he_cap->he_cap_elem.phy_cap_info[1] &
94 IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD))
95 flags |= IWL_TLC_MNG_CFG_FLAGS_LDPC_MSK;
96
97 if (sband->iftype_data && sband->iftype_data->he_cap.has_he &&
98 !(sband->iftype_data->he_cap.he_cap_elem.phy_cap_info[1] &
99 IEEE80211_HE_PHY_CAP1_LDPC_CODING_IN_PAYLOAD))
100 flags &= ~IWL_TLC_MNG_CFG_FLAGS_LDPC_MSK;
101
102 if (he_cap->has_he &&
103 (he_cap->he_cap_elem.phy_cap_info[3] &
104 IEEE80211_HE_PHY_CAP3_DCM_MAX_CONST_RX_MASK))
105 flags |= IWL_TLC_MNG_CFG_FLAGS_HE_DCM_NSS_1_MSK;
106
107 return flags;
108 }
109
110 static
rs_fw_vht_highest_rx_mcs_index(const struct ieee80211_sta_vht_cap * vht_cap,int nss)111 int rs_fw_vht_highest_rx_mcs_index(const struct ieee80211_sta_vht_cap *vht_cap,
112 int nss)
113 {
114 u16 rx_mcs = le16_to_cpu(vht_cap->vht_mcs.rx_mcs_map) &
115 (0x3 << (2 * (nss - 1)));
116 rx_mcs >>= (2 * (nss - 1));
117
118 switch (rx_mcs) {
119 case IEEE80211_VHT_MCS_SUPPORT_0_7:
120 return IWL_TLC_MNG_HT_RATE_MCS7;
121 case IEEE80211_VHT_MCS_SUPPORT_0_8:
122 return IWL_TLC_MNG_HT_RATE_MCS8;
123 case IEEE80211_VHT_MCS_SUPPORT_0_9:
124 return IWL_TLC_MNG_HT_RATE_MCS9;
125 default:
126 WARN_ON_ONCE(1);
127 break;
128 }
129
130 return 0;
131 }
132
133 static void
rs_fw_vht_set_enabled_rates(const struct ieee80211_sta * sta,const struct ieee80211_sta_vht_cap * vht_cap,struct iwl_tlc_config_cmd * cmd)134 rs_fw_vht_set_enabled_rates(const struct ieee80211_sta *sta,
135 const struct ieee80211_sta_vht_cap *vht_cap,
136 struct iwl_tlc_config_cmd *cmd)
137 {
138 u16 supp;
139 int i, highest_mcs;
140 u8 max_nss = sta->rx_nss;
141 struct ieee80211_vht_cap ieee_vht_cap = {
142 .vht_cap_info = cpu_to_le32(vht_cap->cap),
143 .supp_mcs = vht_cap->vht_mcs,
144 };
145
146 /* the station support only a single receive chain */
147 if (sta->smps_mode == IEEE80211_SMPS_STATIC)
148 max_nss = 1;
149
150 for (i = 0; i < max_nss && i < IWL_TLC_NSS_MAX; i++) {
151 int nss = i + 1;
152
153 highest_mcs = rs_fw_vht_highest_rx_mcs_index(vht_cap, nss);
154 if (!highest_mcs)
155 continue;
156
157 supp = BIT(highest_mcs + 1) - 1;
158 if (sta->bandwidth == IEEE80211_STA_RX_BW_20)
159 supp &= ~BIT(IWL_TLC_MNG_HT_RATE_MCS9);
160
161 cmd->ht_rates[i][IWL_TLC_HT_BW_NONE_160] = cpu_to_le16(supp);
162 /*
163 * Check if VHT extended NSS indicates that the bandwidth/NSS
164 * configuration is supported - only for MCS 0 since we already
165 * decoded the MCS bits anyway ourselves.
166 */
167 if (sta->bandwidth == IEEE80211_STA_RX_BW_160 &&
168 ieee80211_get_vht_max_nss(&ieee_vht_cap,
169 IEEE80211_VHT_CHANWIDTH_160MHZ,
170 0, true, nss) >= nss)
171 cmd->ht_rates[i][IWL_TLC_HT_BW_160] =
172 cmd->ht_rates[i][IWL_TLC_HT_BW_NONE_160];
173 }
174 }
175
rs_fw_he_ieee80211_mcs_to_rs_mcs(u16 mcs)176 static u16 rs_fw_he_ieee80211_mcs_to_rs_mcs(u16 mcs)
177 {
178 switch (mcs) {
179 case IEEE80211_HE_MCS_SUPPORT_0_7:
180 return BIT(IWL_TLC_MNG_HT_RATE_MCS7 + 1) - 1;
181 case IEEE80211_HE_MCS_SUPPORT_0_9:
182 return BIT(IWL_TLC_MNG_HT_RATE_MCS9 + 1) - 1;
183 case IEEE80211_HE_MCS_SUPPORT_0_11:
184 return BIT(IWL_TLC_MNG_HT_RATE_MCS11 + 1) - 1;
185 case IEEE80211_HE_MCS_NOT_SUPPORTED:
186 return 0;
187 }
188
189 WARN(1, "invalid HE MCS %d\n", mcs);
190 return 0;
191 }
192
193 static void
rs_fw_he_set_enabled_rates(const struct ieee80211_sta * sta,struct ieee80211_supported_band * sband,struct iwl_tlc_config_cmd * cmd)194 rs_fw_he_set_enabled_rates(const struct ieee80211_sta *sta,
195 struct ieee80211_supported_band *sband,
196 struct iwl_tlc_config_cmd *cmd)
197 {
198 const struct ieee80211_sta_he_cap *he_cap = &sta->he_cap;
199 u16 mcs_160 = le16_to_cpu(he_cap->he_mcs_nss_supp.rx_mcs_160);
200 u16 mcs_80 = le16_to_cpu(he_cap->he_mcs_nss_supp.rx_mcs_80);
201 u16 tx_mcs_80 =
202 le16_to_cpu(sband->iftype_data->he_cap.he_mcs_nss_supp.tx_mcs_80);
203 u16 tx_mcs_160 =
204 le16_to_cpu(sband->iftype_data->he_cap.he_mcs_nss_supp.tx_mcs_160);
205 int i;
206 u8 nss = sta->rx_nss;
207
208 /* the station support only a single receive chain */
209 if (sta->smps_mode == IEEE80211_SMPS_STATIC)
210 nss = 1;
211
212 for (i = 0; i < nss && i < IWL_TLC_NSS_MAX; i++) {
213 u16 _mcs_160 = (mcs_160 >> (2 * i)) & 0x3;
214 u16 _mcs_80 = (mcs_80 >> (2 * i)) & 0x3;
215 u16 _tx_mcs_160 = (tx_mcs_160 >> (2 * i)) & 0x3;
216 u16 _tx_mcs_80 = (tx_mcs_80 >> (2 * i)) & 0x3;
217
218 /* If one side doesn't support - mark both as not supporting */
219 if (_mcs_80 == IEEE80211_HE_MCS_NOT_SUPPORTED ||
220 _tx_mcs_80 == IEEE80211_HE_MCS_NOT_SUPPORTED) {
221 _mcs_80 = IEEE80211_HE_MCS_NOT_SUPPORTED;
222 _tx_mcs_80 = IEEE80211_HE_MCS_NOT_SUPPORTED;
223 }
224 if (_mcs_80 > _tx_mcs_80)
225 _mcs_80 = _tx_mcs_80;
226 cmd->ht_rates[i][IWL_TLC_HT_BW_NONE_160] =
227 cpu_to_le16(rs_fw_he_ieee80211_mcs_to_rs_mcs(_mcs_80));
228
229 /* If one side doesn't support - mark both as not supporting */
230 if (_mcs_160 == IEEE80211_HE_MCS_NOT_SUPPORTED ||
231 _tx_mcs_160 == IEEE80211_HE_MCS_NOT_SUPPORTED) {
232 _mcs_160 = IEEE80211_HE_MCS_NOT_SUPPORTED;
233 _tx_mcs_160 = IEEE80211_HE_MCS_NOT_SUPPORTED;
234 }
235 if (_mcs_160 > _tx_mcs_160)
236 _mcs_160 = _tx_mcs_160;
237 cmd->ht_rates[i][IWL_TLC_HT_BW_160] =
238 cpu_to_le16(rs_fw_he_ieee80211_mcs_to_rs_mcs(_mcs_160));
239 }
240 }
241
rs_fw_set_supp_rates(struct ieee80211_sta * sta,struct ieee80211_supported_band * sband,struct iwl_tlc_config_cmd * cmd)242 static void rs_fw_set_supp_rates(struct ieee80211_sta *sta,
243 struct ieee80211_supported_band *sband,
244 struct iwl_tlc_config_cmd *cmd)
245 {
246 int i;
247 u16 supp = 0;
248 unsigned long tmp; /* must be unsigned long for for_each_set_bit */
249 const struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap;
250 const struct ieee80211_sta_vht_cap *vht_cap = &sta->vht_cap;
251 const struct ieee80211_sta_he_cap *he_cap = &sta->he_cap;
252
253 /* non HT rates */
254 tmp = sta->supp_rates[sband->band];
255 for_each_set_bit(i, &tmp, BITS_PER_LONG)
256 supp |= BIT(sband->bitrates[i].hw_value);
257
258 cmd->non_ht_rates = cpu_to_le16(supp);
259 cmd->mode = IWL_TLC_MNG_MODE_NON_HT;
260
261 /* HT/VHT rates */
262 if (he_cap->has_he) {
263 cmd->mode = IWL_TLC_MNG_MODE_HE;
264 rs_fw_he_set_enabled_rates(sta, sband, cmd);
265 } else if (vht_cap->vht_supported) {
266 cmd->mode = IWL_TLC_MNG_MODE_VHT;
267 rs_fw_vht_set_enabled_rates(sta, vht_cap, cmd);
268 } else if (ht_cap->ht_supported) {
269 cmd->mode = IWL_TLC_MNG_MODE_HT;
270 cmd->ht_rates[IWL_TLC_NSS_1][IWL_TLC_HT_BW_NONE_160] =
271 cpu_to_le16(ht_cap->mcs.rx_mask[0]);
272
273 /* the station support only a single receive chain */
274 if (sta->smps_mode == IEEE80211_SMPS_STATIC)
275 cmd->ht_rates[IWL_TLC_NSS_2][IWL_TLC_HT_BW_NONE_160] =
276 0;
277 else
278 cmd->ht_rates[IWL_TLC_NSS_2][IWL_TLC_HT_BW_NONE_160] =
279 cpu_to_le16(ht_cap->mcs.rx_mask[1]);
280 }
281 }
282
iwl_mvm_tlc_update_notif(struct iwl_mvm * mvm,struct iwl_rx_cmd_buffer * rxb)283 void iwl_mvm_tlc_update_notif(struct iwl_mvm *mvm,
284 struct iwl_rx_cmd_buffer *rxb)
285 {
286 struct iwl_rx_packet *pkt = rxb_addr(rxb);
287 struct iwl_tlc_update_notif *notif;
288 struct ieee80211_sta *sta;
289 struct iwl_mvm_sta *mvmsta;
290 struct iwl_lq_sta_rs_fw *lq_sta;
291 u32 flags;
292
293 rcu_read_lock();
294
295 notif = (void *)pkt->data;
296 sta = rcu_dereference(mvm->fw_id_to_mac_id[notif->sta_id]);
297 if (IS_ERR_OR_NULL(sta)) {
298 IWL_ERR(mvm, "Invalid sta id (%d) in FW TLC notification\n",
299 notif->sta_id);
300 goto out;
301 }
302
303 mvmsta = iwl_mvm_sta_from_mac80211(sta);
304
305 if (!mvmsta) {
306 IWL_ERR(mvm, "Invalid sta id (%d) in FW TLC notification\n",
307 notif->sta_id);
308 goto out;
309 }
310
311 flags = le32_to_cpu(notif->flags);
312
313 lq_sta = &mvmsta->lq_sta.rs_fw;
314
315 if (flags & IWL_TLC_NOTIF_FLAG_RATE) {
316 char pretty_rate[100];
317 lq_sta->last_rate_n_flags = le32_to_cpu(notif->rate);
318 rs_pretty_print_rate(pretty_rate, sizeof(pretty_rate),
319 lq_sta->last_rate_n_flags);
320 IWL_DEBUG_RATE(mvm, "new rate: %s\n", pretty_rate);
321 }
322
323 if (flags & IWL_TLC_NOTIF_FLAG_AMSDU && !mvmsta->orig_amsdu_len) {
324 u16 size = le32_to_cpu(notif->amsdu_size);
325 int i;
326
327 if (sta->max_amsdu_len < size) {
328 /*
329 * In debug sta->max_amsdu_len < size
330 * so also check with orig_amsdu_len which holds the
331 * original data before debugfs changed the value
332 */
333 WARN_ON(mvmsta->orig_amsdu_len < size);
334 goto out;
335 }
336
337 mvmsta->amsdu_enabled = le32_to_cpu(notif->amsdu_enabled);
338 mvmsta->max_amsdu_len = size;
339 sta->max_rc_amsdu_len = mvmsta->max_amsdu_len;
340
341 for (i = 0; i < IWL_MAX_TID_COUNT; i++) {
342 if (mvmsta->amsdu_enabled & BIT(i))
343 sta->max_tid_amsdu_len[i] =
344 iwl_mvm_max_amsdu_size(mvm, sta, i);
345 else
346 /*
347 * Not so elegant, but this will effectively
348 * prevent AMSDU on this TID
349 */
350 sta->max_tid_amsdu_len[i] = 1;
351 }
352
353 IWL_DEBUG_RATE(mvm,
354 "AMSDU update. AMSDU size: %d, AMSDU selected size: %d, AMSDU TID bitmap 0x%X\n",
355 le32_to_cpu(notif->amsdu_size), size,
356 mvmsta->amsdu_enabled);
357 }
358 out:
359 rcu_read_unlock();
360 }
361
rs_fw_get_max_amsdu_len(struct ieee80211_sta * sta)362 u16 rs_fw_get_max_amsdu_len(struct ieee80211_sta *sta)
363 {
364 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
365 const struct ieee80211_sta_vht_cap *vht_cap = &sta->vht_cap;
366 const struct ieee80211_sta_ht_cap *ht_cap = &sta->ht_cap;
367
368 if (mvmsta->vif->bss_conf.chandef.chan->band == NL80211_BAND_6GHZ) {
369 switch (le16_get_bits(sta->he_6ghz_capa.capa,
370 IEEE80211_HE_6GHZ_CAP_MAX_MPDU_LEN)) {
371 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454:
372 return IEEE80211_MAX_MPDU_LEN_VHT_11454;
373 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991:
374 return IEEE80211_MAX_MPDU_LEN_VHT_7991;
375 default:
376 return IEEE80211_MAX_MPDU_LEN_VHT_3895;
377 }
378 } else
379 if (vht_cap->vht_supported) {
380 switch (vht_cap->cap & IEEE80211_VHT_CAP_MAX_MPDU_MASK) {
381 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454:
382 return IEEE80211_MAX_MPDU_LEN_VHT_11454;
383 case IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991:
384 return IEEE80211_MAX_MPDU_LEN_VHT_7991;
385 default:
386 return IEEE80211_MAX_MPDU_LEN_VHT_3895;
387 }
388 } else if (ht_cap->ht_supported) {
389 if (ht_cap->cap & IEEE80211_HT_CAP_MAX_AMSDU)
390 /*
391 * agg is offloaded so we need to assume that agg
392 * are enabled and max mpdu in ampdu is 4095
393 * (spec 802.11-2016 9.3.2.1)
394 */
395 return IEEE80211_MAX_MPDU_LEN_HT_BA;
396 else
397 return IEEE80211_MAX_MPDU_LEN_HT_3839;
398 }
399
400 /* in legacy mode no amsdu is enabled so return zero */
401 return 0;
402 }
403
rs_fw_rate_init(struct iwl_mvm * mvm,struct ieee80211_sta * sta,enum nl80211_band band,bool update)404 void rs_fw_rate_init(struct iwl_mvm *mvm, struct ieee80211_sta *sta,
405 enum nl80211_band band, bool update)
406 {
407 struct ieee80211_hw *hw = mvm->hw;
408 struct iwl_mvm_sta *mvmsta = iwl_mvm_sta_from_mac80211(sta);
409 struct iwl_lq_sta_rs_fw *lq_sta = &mvmsta->lq_sta.rs_fw;
410 u32 cmd_id = iwl_cmd_id(TLC_MNG_CONFIG_CMD, DATA_PATH_GROUP, 0);
411 struct ieee80211_supported_band *sband = hw->wiphy->bands[band];
412 u16 max_amsdu_len = rs_fw_get_max_amsdu_len(sta);
413 struct iwl_tlc_config_cmd cfg_cmd = {
414 .sta_id = mvmsta->sta_id,
415 .max_ch_width = update ?
416 rs_fw_bw_from_sta_bw(sta) : RATE_MCS_CHAN_WIDTH_20,
417 .flags = cpu_to_le16(rs_fw_get_config_flags(mvm, sta, sband)),
418 .chains = rs_fw_set_active_chains(iwl_mvm_get_valid_tx_ant(mvm)),
419 .sgi_ch_width_supp = rs_fw_sgi_cw_support(sta),
420 .max_mpdu_len = cpu_to_le16(max_amsdu_len),
421 .amsdu = iwl_mvm_is_csum_supported(mvm),
422 };
423 int ret;
424 u16 cmd_size = sizeof(cfg_cmd);
425
426 /* In old versions of the API the struct is 4 bytes smaller */
427 if (iwl_fw_lookup_cmd_ver(mvm->fw, DATA_PATH_GROUP,
428 TLC_MNG_CONFIG_CMD, 0) < 3)
429 cmd_size -= 4;
430
431 memset(lq_sta, 0, offsetof(typeof(*lq_sta), pers));
432
433 #ifdef CONFIG_IWLWIFI_DEBUGFS
434 iwl_mvm_reset_frame_stats(mvm);
435 #endif
436 rs_fw_set_supp_rates(sta, sband, &cfg_cmd);
437
438 /*
439 * since TLC offload works with one mode we can assume
440 * that only vht/ht is used and also set it as station max amsdu
441 */
442 sta->max_amsdu_len = max_amsdu_len;
443
444 ret = iwl_mvm_send_cmd_pdu(mvm, cmd_id, CMD_ASYNC, cmd_size,
445 &cfg_cmd);
446 if (ret)
447 IWL_ERR(mvm, "Failed to send rate scale config (%d)\n", ret);
448 }
449
rs_fw_tx_protection(struct iwl_mvm * mvm,struct iwl_mvm_sta * mvmsta,bool enable)450 int rs_fw_tx_protection(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta,
451 bool enable)
452 {
453 /* TODO: need to introduce a new FW cmd since LQ cmd is not relevant */
454 IWL_DEBUG_RATE(mvm, "tx protection - not implemented yet.\n");
455 return 0;
456 }
457
iwl_mvm_rs_add_sta(struct iwl_mvm * mvm,struct iwl_mvm_sta * mvmsta)458 void iwl_mvm_rs_add_sta(struct iwl_mvm *mvm, struct iwl_mvm_sta *mvmsta)
459 {
460 struct iwl_lq_sta_rs_fw *lq_sta = &mvmsta->lq_sta.rs_fw;
461
462 IWL_DEBUG_RATE(mvm, "create station rate scale window\n");
463
464 lq_sta->pers.drv = mvm;
465 lq_sta->pers.sta_id = mvmsta->sta_id;
466 lq_sta->pers.chains = 0;
467 memset(lq_sta->pers.chain_signal, 0, sizeof(lq_sta->pers.chain_signal));
468 lq_sta->pers.last_rssi = S8_MIN;
469 lq_sta->last_rate_n_flags = 0;
470
471 #ifdef CONFIG_MAC80211_DEBUGFS
472 lq_sta->pers.dbg_fixed_rate = 0;
473 #endif
474 }
475
