diff options
| -rw-r--r-- | package/kernel/mac80211/patches/ath/560-ath9k-fix-transmitting-to-stations-in-dynamic-SMPS-m.patch | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/package/kernel/mac80211/patches/ath/560-ath9k-fix-transmitting-to-stations-in-dynamic-SMPS-m.patch b/package/kernel/mac80211/patches/ath/560-ath9k-fix-transmitting-to-stations-in-dynamic-SMPS-m.patch new file mode 100644 index 0000000000..68f3a31548 --- /dev/null +++ b/package/kernel/mac80211/patches/ath/560-ath9k-fix-transmitting-to-stations-in-dynamic-SMPS-m.patch @@ -0,0 +1,49 @@ +From: Felix Fietkau <nbd@nbd.name> +Date: Sun, 14 Feb 2021 19:45:50 +0100 +Subject: [PATCH] ath9k: fix transmitting to stations in dynamic SMPS mode + +When transmitting to a receiver in dynamic SMPS mode, all transmissions that +use multiple spatial streams need to be sent using CTS-to-self or RTS/CTS to +give the receiver's extra chains some time to wake up. +This fixes the tx rate getting stuck at <= MCS7 for some clients, especially +Intel ones, which make aggressive use of SMPS. + +Cc: stable@vger.kernel.org +Reported-by: Martin Kennedy <hurricos@gmail.com> +Signed-off-by: Felix Fietkau <nbd@nbd.name> +--- + +--- a/drivers/net/wireless/ath/ath9k/ath9k.h ++++ b/drivers/net/wireless/ath/ath9k/ath9k.h +@@ -179,7 +179,8 @@ struct ath_frame_info { + s8 txq; + u8 keyix; + u8 rtscts_rate; +- u8 retries : 7; ++ u8 retries : 6; ++ u8 dyn_smps : 1; + u8 baw_tracked : 1; + u8 tx_power; + enum ath9k_key_type keytype:2; +--- a/drivers/net/wireless/ath/ath9k/xmit.c ++++ b/drivers/net/wireless/ath/ath9k/xmit.c +@@ -1271,6 +1271,11 @@ static void ath_buf_set_rate(struct ath_ + is_40, is_sgi, is_sp); + if (rix < 8 && (tx_info->flags & IEEE80211_TX_CTL_STBC)) + info->rates[i].RateFlags |= ATH9K_RATESERIES_STBC; ++ if (rix >= 8 && fi->dyn_smps) { ++ info->rates[i].RateFlags |= ++ ATH9K_RATESERIES_RTS_CTS; ++ info->flags |= ATH9K_TXDESC_CTSENA; ++ } + + info->txpower[i] = ath_get_rate_txpower(sc, bf, rix, + is_40, false); +@@ -2114,6 +2119,7 @@ static void setup_frame_info(struct ieee + fi->keyix = an->ps_key; + else + fi->keyix = ATH9K_TXKEYIX_INVALID; ++ fi->dyn_smps = sta && sta->smps_mode == IEEE80211_SMPS_DYNAMIC; + fi->keytype = keytype; + fi->framelen = framelen; + fi->tx_power = txpower; |