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rtl8xxxu: Obtain RTS rates from mac80211 

Use the mac80211 provided rate for RTS rather than the hard coded
24Mbps as suggested by the vendor drivers.

Reported-by: Andrea Merello <andrea.merello@gmail.com>
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Jes Sorensen 2016-11-18 16:44:26 -05:00 committed by Kalle Valo
parent 5d03f882c2
commit a748a11038
2 changed files with 32 additions and 20 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu.h
View File

@ -1340,7 +1340,7 @@ struct rtl8xxxu_fileops {
void (*fill_txdesc) (struct ieee80211_hdr *hdr,
struct rtl8xxxu_txdesc32 *tx_desc, u32 rate,
u16 rate_flag, bool sgi, bool short_preamble,
bool ampdu_enable);
bool ampdu_enable, u32 rts_rate);
int writeN_block_size;
int rx_agg_buf_size;
char tx_desc_size;
@ -1437,11 +1437,11 @@ bool rtl8xxxu_gen2_simularity_compare(struct rtl8xxxu_priv *priv,
void rtl8xxxu_fill_txdesc_v1(struct ieee80211_hdr *hdr,
struct rtl8xxxu_txdesc32 *tx_desc, u32 rate,
u16 rate_flag, bool sgi, bool short_preamble,
bool ampdu_enable);
bool ampdu_enable, u32 rts_rate);
void rtl8xxxu_fill_txdesc_v2(struct ieee80211_hdr *hdr,
struct rtl8xxxu_txdesc32 *tx_desc32, u32 rate,
u16 rate_flag, bool sgi, bool short_preamble,
bool ampdu_enable);
bool ampdu_enable, u32 rts_rate);
extern struct rtl8xxxu_fileops rtl8192cu_fops;
extern struct rtl8xxxu_fileops rtl8192eu_fops;

46
drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_core.c
View File

@ -4762,7 +4762,7 @@ void
rtl8xxxu_fill_txdesc_v1(struct ieee80211_hdr *hdr,
struct rtl8xxxu_txdesc32 *tx_desc, u32 rate,
u16 rate_flag, bool sgi, bool short_preamble,
bool ampdu_enable)
bool ampdu_enable, u32 rts_rate)
{
u16 seq_number;
@ -4796,15 +4796,16 @@ rtl8xxxu_fill_txdesc_v1(struct ieee80211_hdr *hdr,
if (sgi)
tx_desc->txdw5 |= cpu_to_le32(TXDESC32_SHORT_GI);
/*
* rts_rate is zero if RTS/CTS or CTS to SELF are not enabled
*/
tx_desc->txdw4 |= cpu_to_le32(rts_rate << TXDESC32_RTS_RATE_SHIFT);
if (rate_flag & IEEE80211_TX_RC_USE_RTS_CTS) {
/*
* Use RTS rate 24M - does the mac80211 tell
* us which to use?
*/
tx_desc->txdw4 |= cpu_to_le32(DESC_RATE_24M <<
TXDESC32_RTS_RATE_SHIFT);
tx_desc->txdw4 |= cpu_to_le32(TXDESC32_RTS_CTS_ENABLE);
tx_desc->txdw4 |= cpu_to_le32(TXDESC32_HW_RTS_ENABLE);
} else if (rate_flag & IEEE80211_TX_RC_USE_CTS_PROTECT) {
tx_desc->txdw4 |= cpu_to_le32(TXDESC32_CTS_SELF_ENABLE);
tx_desc->txdw4 |= cpu_to_le32(TXDESC32_HW_RTS_ENABLE);
}
}
@ -4816,7 +4817,7 @@ void
rtl8xxxu_fill_txdesc_v2(struct ieee80211_hdr *hdr,
struct rtl8xxxu_txdesc32 *tx_desc32, u32 rate,
u16 rate_flag, bool sgi, bool short_preamble,
bool ampdu_enable)
bool ampdu_enable, u32 rts_rate)
{
struct rtl8xxxu_txdesc40 *tx_desc40;
u16 seq_number;
@ -4849,15 +4850,19 @@ rtl8xxxu_fill_txdesc_v2(struct ieee80211_hdr *hdr,
if (short_preamble)
tx_desc40->txdw5 |= cpu_to_le32(TXDESC40_SHORT_PREAMBLE);
tx_desc40->txdw4 |= cpu_to_le32(rts_rate << TXDESC40_RTS_RATE_SHIFT);
/*
* rts_rate is zero if RTS/CTS or CTS to SELF are not enabled
*/
if (rate_flag & IEEE80211_TX_RC_USE_RTS_CTS) {
/*
* Use RTS rate 24M - does the mac80211 tell
* us which to use?
*/
tx_desc40->txdw4 |= cpu_to_le32(DESC_RATE_24M <<
TXDESC40_RTS_RATE_SHIFT);
tx_desc40->txdw3 |= cpu_to_le32(TXDESC40_RTS_CTS_ENABLE);
tx_desc40->txdw3 |= cpu_to_le32(TXDESC40_HW_RTS_ENABLE);
} else if (rate_flag & IEEE80211_TX_RC_USE_CTS_PROTECT) {
/*
* For some reason the vendor driver doesn't set
* TXDESC40_HW_RTS_ENABLE for CTS to SELF
*/
tx_desc40->txdw3 |= cpu_to_le32(TXDESC40_CTS_SELF_ENABLE);
}
}
@ -4874,7 +4879,7 @@ static void rtl8xxxu_tx(struct ieee80211_hw *hw,
struct ieee80211_sta *sta = NULL;
struct ieee80211_vif *vif = tx_info->control.vif;
struct device *dev = &priv->udev->dev;
u32 queue, rate;
u32 queue, rate, rts_rate;
u16 pktlen = skb->len;
u16 seq_number;
u16 rate_flag = tx_info->control.rates[0].flags;
@ -4974,10 +4979,17 @@ static void rtl8xxxu_tx(struct ieee80211_hw *hw,
(sta && vif && vif->bss_conf.use_short_preamble))
short_preamble = true;
if (rate_flag & IEEE80211_TX_RC_USE_RTS_CTS)
rts_rate = ieee80211_get_rts_cts_rate(hw, tx_info)->hw_value;
else if (rate_flag & IEEE80211_TX_RC_USE_CTS_PROTECT)
rts_rate = ieee80211_get_rts_cts_rate(hw, tx_info)->hw_value;
else
rts_rate = 0;
seq_number = IEEE80211_SEQ_TO_SN(le16_to_cpu(hdr->seq_ctrl));
priv->fops->fill_txdesc(hdr, tx_desc, rate, rate_flag,
sgi, short_preamble, ampdu_enable);
priv->fops->fill_txdesc(hdr, tx_desc, rate, rate_flag, sgi,
short_preamble, ampdu_enable, rts_rate);
rtl8xxxu_calc_tx_desc_csum(tx_desc);