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From 3972cc579140e48e8390fff5e94f6e9e78c3dd87 Mon Sep 17 00:00:00 2001
From: Jes Sorensen <Jes.Sorensen@redhat.com>
Date: Fri, 19 Aug 2016 17:46:38 -0400
Subject: [PATCH] rtl8xxxu: Determine the need for SGI before handling specific
TX desc formats
In order to be able to split out the TX descriptor handling code,
determine in advance the need to mark SGI.
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
---
drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c | 14 ++++++++------
1 file changed, 8 insertions(+), 6 deletions(-)
--- a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c
+++ b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c
@@ -4770,7 +4770,7 @@ static void rtl8xxxu_tx(struct ieee80211
u16 rate_flag = tx_info->control.rates[0].flags;
int tx_desc_size = priv->fops->tx_desc_size;
int ret;
- bool usedesc40, ampdu_enable;
+ bool usedesc40, ampdu_enable, sgi = false;
if (skb_headroom(skb) < tx_desc_size) {
dev_warn(dev,
@@ -4854,6 +4854,12 @@ static void rtl8xxxu_tx(struct ieee80211
else
rate = tx_rate->hw_value;
+ if (rate_flag & IEEE80211_TX_RC_SHORT_GI ||
+ (ieee80211_is_data_qos(hdr->frame_control) &&
+ sta && sta->ht_cap.cap &
+ (IEEE80211_HT_CAP_SGI_40 | IEEE80211_HT_CAP_SGI_20)))
+ sgi = true;
+
seq_number = IEEE80211_SEQ_TO_SN(le16_to_cpu(hdr->seq_ctrl));
if (!usedesc40) {
tx_desc->txdw5 = cpu_to_le32(rate);
@@ -4886,12 +4892,8 @@ static void rtl8xxxu_tx(struct ieee80211
(sta && vif && vif->bss_conf.use_short_preamble))
tx_desc->txdw4 |= cpu_to_le32(TXDESC32_SHORT_PREAMBLE);
- if (rate_flag & IEEE80211_TX_RC_SHORT_GI ||
- (ieee80211_is_data_qos(hdr->frame_control) &&
- sta && sta->ht_cap.cap &
- (IEEE80211_HT_CAP_SGI_40 | IEEE80211_HT_CAP_SGI_20))) {
+ if (sgi)
tx_desc->txdw5 |= cpu_to_le32(TXDESC32_SHORT_GI);
- }
if (rate_flag & IEEE80211_TX_RC_USE_RTS_CTS) {
/*
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