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path: root/drivers/net/wireless/intel/iwlwifi/mvm/rs.c
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Diffstat (limited to 'drivers/net/wireless/intel/iwlwifi/mvm/rs.c')
-rw-r--r--drivers/net/wireless/intel/iwlwifi/mvm/rs.c28
1 files changed, 20 insertions, 8 deletions
diff --git a/drivers/net/wireless/intel/iwlwifi/mvm/rs.c b/drivers/net/wireless/intel/iwlwifi/mvm/rs.c
index 60abb0084ee5..47f4c7a1d80d 100644
--- a/drivers/net/wireless/intel/iwlwifi/mvm/rs.c
+++ b/drivers/net/wireless/intel/iwlwifi/mvm/rs.c
@@ -2684,7 +2684,8 @@ static void rs_get_initial_rate(struct iwl_mvm *mvm,
struct ieee80211_sta *sta,
struct iwl_lq_sta *lq_sta,
enum nl80211_band band,
- struct rs_rate *rate)
+ struct rs_rate *rate,
+ bool init)
{
int i, nentries;
unsigned long active_rate;
@@ -2738,14 +2739,25 @@ static void rs_get_initial_rate(struct iwl_mvm *mvm,
*/
if (sta->vht_cap.vht_supported &&
best_rssi > IWL_RS_LOW_RSSI_THRESHOLD) {
- switch (sta->bandwidth) {
- case IEEE80211_STA_RX_BW_160:
- case IEEE80211_STA_RX_BW_80:
- case IEEE80211_STA_RX_BW_40:
+ /*
+ * In AP mode, when a new station associates, rs is initialized
+ * immediately upon association completion, before the phy
+ * context is updated with the association parameters, so the
+ * sta bandwidth might be wider than the phy context allows.
+ * To avoid this issue, always initialize rs with 20mhz
+ * bandwidth rate, and after authorization, when the phy context
+ * is already up-to-date, re-init rs with the correct bw.
+ */
+ u32 bw = init ? RATE_MCS_CHAN_WIDTH_20 : rs_bw_from_sta_bw(sta);
+
+ switch (bw) {
+ case RATE_MCS_CHAN_WIDTH_40:
+ case RATE_MCS_CHAN_WIDTH_80:
+ case RATE_MCS_CHAN_WIDTH_160:
initial_rates = rs_optimal_rates_vht;
nentries = ARRAY_SIZE(rs_optimal_rates_vht);
break;
- case IEEE80211_STA_RX_BW_20:
+ case RATE_MCS_CHAN_WIDTH_20:
initial_rates = rs_optimal_rates_vht_20mhz;
nentries = ARRAY_SIZE(rs_optimal_rates_vht_20mhz);
break;
@@ -2756,7 +2768,7 @@ static void rs_get_initial_rate(struct iwl_mvm *mvm,
active_rate = lq_sta->active_siso_rate;
rate->type = LQ_VHT_SISO;
- rate->bw = rs_bw_from_sta_bw(sta);
+ rate->bw = bw;
} else if (sta->ht_cap.ht_supported &&
best_rssi > IWL_RS_LOW_RSSI_THRESHOLD) {
initial_rates = rs_optimal_rates_ht;
@@ -2839,7 +2851,7 @@ static void rs_initialize_lq(struct iwl_mvm *mvm,
tbl = &(lq_sta->lq_info[active_tbl]);
rate = &tbl->rate;
- rs_get_initial_rate(mvm, sta, lq_sta, band, rate);
+ rs_get_initial_rate(mvm, sta, lq_sta, band, rate, init);
rs_init_optimal_rate(mvm, sta, lq_sta);
WARN_ONCE(rate->ant != ANT_A && rate->ant != ANT_B,
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