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wifi: rtl8xxxu: Fix AIFS written to REG_EDCA_*_PARAM

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[ Upstream commit 5574d3290449916397f3092dcd2bac92415498e1 ]

ieee80211_tx_queue_params.aifs is not supposed to be written directly
to the REG_EDCA_*_PARAM registers. Instead process it like the vendor
drivers do. It's kinda hacky but it works.

This change boosts the download speed and makes it more stable.

Tested with RTL8188FU but all the other supported chips should also
benefit.

Fixes: 26f1fad29a ("New driver: rtl8xxxu (mac80211)")
Signed-off-by: Bitterblue Smith <rtl8821cerfe2@gmail.com>
Acked-by: Jes Sorensen <jes@trained-monkey.org>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/038cc03f-3567-77ba-a7bd-c4930e3b2fad@gmail.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Bitterblue Smith 2022-09-18 15:42:25 +03:00 committed by Greg Kroah-Hartman
parent 17196f2f98
commit d2b5dc3a53
1 changed files with 49 additions and 0 deletions
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49
drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c
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@ -4507,6 +4507,53 @@ rtl8xxxu_wireless_mode(struct ieee80211_hw *hw, struct ieee80211_sta *sta)
return network_type;
}
static void rtl8xxxu_set_aifs(struct rtl8xxxu_priv *priv, u8 slot_time)
{
u32 reg_edca_param[IEEE80211_NUM_ACS] = {
[IEEE80211_AC_VO] = REG_EDCA_VO_PARAM,
[IEEE80211_AC_VI] = REG_EDCA_VI_PARAM,
[IEEE80211_AC_BE] = REG_EDCA_BE_PARAM,
[IEEE80211_AC_BK] = REG_EDCA_BK_PARAM,
};
u32 val32;
u16 wireless_mode = 0;
u8 aifs, aifsn, sifs;
int i;
if (priv->vif) {
struct ieee80211_sta *sta;
rcu_read_lock();
sta = ieee80211_find_sta(priv->vif, priv->vif->bss_conf.bssid);
if (sta)
wireless_mode = rtl8xxxu_wireless_mode(priv->hw, sta);
rcu_read_unlock();
}
if (priv->hw->conf.chandef.chan->band == NL80211_BAND_5GHZ ||
(wireless_mode & WIRELESS_MODE_N_24G))
sifs = 16;
else
sifs = 10;
for (i = 0; i < IEEE80211_NUM_ACS; i++) {
val32 = rtl8xxxu_read32(priv, reg_edca_param[i]);
/* It was set in conf_tx. */
aifsn = val32 & 0xff;
/* aifsn not set yet or already fixed */
if (aifsn < 2 || aifsn > 15)
continue;
aifs = aifsn * slot_time + sifs;
val32 &= ~0xff;
val32 |= aifs;
rtl8xxxu_write32(priv, reg_edca_param[i], val32);
}
}
static void
rtl8xxxu_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
struct ieee80211_bss_conf *bss_conf, u32 changed)
@ -4592,6 +4639,8 @@ rtl8xxxu_bss_info_changed(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
else
val8 = 20;
rtl8xxxu_write8(priv, REG_SLOT, val8);
rtl8xxxu_set_aifs(priv, val8);
}
if (changed & BSS_CHANGED_BSSID) {