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mt76x02: set protection according to ht operation element

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Configure protection based on information that are provided to
us either by remote AP or by hostapd via HT operation IE.

Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Stanislaw Gruszka 2018-12-10 11:53:57 +01:00 committed by Felix Fietkau
parent 493d2dfab3
commit 26a7b54731
4 changed files with 90 additions and 0 deletions
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83
drivers/net/wireless/mediatek/mt76/mt76x02_mac.c
View File

@ -731,6 +731,89 @@ void mt76x02_mac_set_rts_thresh(struct mt76x02_dev *dev, u32 val)
MT_PROT_CFG_CTRL | MT_PROT_CFG_RTS_THRESH, data);
}
void mt76x02_mac_set_tx_protection(struct mt76x02_dev *dev, bool legacy_prot,
int ht_mode)
{
int mode = ht_mode & IEEE80211_HT_OP_MODE_PROTECTION;
bool non_gf = !!(ht_mode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT);
u32 prot[6];
u32 vht_prot[3];
int i;
u16 rts_thr;
for (i = 0; i < ARRAY_SIZE(prot); i++) {
prot[i] = mt76_rr(dev, MT_CCK_PROT_CFG + i * 4);
prot[i] &= ~MT_PROT_CFG_CTRL;
if (i >= 2)
prot[i] &= ~MT_PROT_CFG_RATE;
}
for (i = 0; i < ARRAY_SIZE(vht_prot); i++) {
vht_prot[i] = mt76_rr(dev, MT_TX_PROT_CFG6 + i * 4);
vht_prot[i] &= ~(MT_PROT_CFG_CTRL | MT_PROT_CFG_RATE);
}
rts_thr = mt76_get_field(dev, MT_TX_RTS_CFG, MT_TX_RTS_CFG_THRESH);
if (rts_thr != 0xffff)
prot[0] |= MT_PROT_CTRL_RTS_CTS;
if (legacy_prot) {
prot[1] |= MT_PROT_CTRL_CTS2SELF;
prot[2] |= MT_PROT_RATE_CCK_11;
prot[3] |= MT_PROT_RATE_CCK_11;
prot[4] |= MT_PROT_RATE_CCK_11;
prot[5] |= MT_PROT_RATE_CCK_11;
vht_prot[0] |= MT_PROT_RATE_CCK_11;
vht_prot[1] |= MT_PROT_RATE_CCK_11;
vht_prot[2] |= MT_PROT_RATE_CCK_11;
} else {
if (rts_thr != 0xffff)
prot[1] |= MT_PROT_CTRL_RTS_CTS;
prot[2] |= MT_PROT_RATE_OFDM_24;
prot[3] |= MT_PROT_RATE_DUP_OFDM_24;
prot[4] |= MT_PROT_RATE_OFDM_24;
prot[5] |= MT_PROT_RATE_DUP_OFDM_24;
vht_prot[0] |= MT_PROT_RATE_OFDM_24;
vht_prot[1] |= MT_PROT_RATE_DUP_OFDM_24;
vht_prot[2] |= MT_PROT_RATE_SGI_OFDM_24;
}
switch (mode) {
case IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER:
case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED:
prot[2] |= MT_PROT_CTRL_RTS_CTS;
prot[3] |= MT_PROT_CTRL_RTS_CTS;
prot[4] |= MT_PROT_CTRL_RTS_CTS;
prot[5] |= MT_PROT_CTRL_RTS_CTS;
vht_prot[0] |= MT_PROT_CTRL_RTS_CTS;
vht_prot[1] |= MT_PROT_CTRL_RTS_CTS;
vht_prot[2] |= MT_PROT_CTRL_RTS_CTS;
break;
case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ:
prot[3] |= MT_PROT_CTRL_RTS_CTS;
prot[5] |= MT_PROT_CTRL_RTS_CTS;
vht_prot[1] |= MT_PROT_CTRL_RTS_CTS;
vht_prot[2] |= MT_PROT_CTRL_RTS_CTS;
break;
}
if (non_gf) {
prot[4] |= MT_PROT_CTRL_RTS_CTS;
prot[5] |= MT_PROT_CTRL_RTS_CTS;
}
for (i = 0; i < ARRAY_SIZE(prot); i++)
mt76_wr(dev, MT_CCK_PROT_CFG + i * 4, prot[i]);
for (i = 0; i < ARRAY_SIZE(vht_prot); i++)
mt76_wr(dev, MT_TX_PROT_CFG6 + i * 4, vht_prot[i]);
}
void mt76x02_update_channel(struct mt76_dev *mdev)
{
struct mt76x02_dev *dev = container_of(mdev, struct mt76x02_dev, mt76);

2
drivers/net/wireless/mediatek/mt76/mt76x02_mac.h
View File

@ -194,6 +194,8 @@ void mt76x02_send_tx_status(struct mt76x02_dev *dev,
struct mt76x02_tx_status *stat, u8 *update);
int mt76x02_mac_process_rx(struct mt76x02_dev *dev, struct sk_buff *skb,
void *rxi);
void mt76x02_mac_set_tx_protection(struct mt76x02_dev *dev, bool legacy_prot,
int ht_mode);
void mt76x02_mac_set_rts_thresh(struct mt76x02_dev *dev, u32 val);
void mt76x02_mac_setaddr(struct mt76x02_dev *dev, u8 *addr);
void mt76x02_mac_write_txwi(struct mt76x02_dev *dev, struct mt76x02_txwi *txwi,

1
drivers/net/wireless/mediatek/mt76/mt76x02_regs.h
View File

@ -443,6 +443,7 @@
#define MT_PROT_RATE_OFDM_6 0x2000
#define MT_PROT_RATE_OFDM_24 0x2004
#define MT_PROT_RATE_DUP_OFDM_24 0x2084
#define MT_PROT_RATE_SGI_OFDM_24 0x2104
#define MT_PROT_TXOP_ALLOW_ALL GENMASK(25, 20)
#define MT_PROT_TXOP_ALLOW_BW20 (MT_PROT_TXOP_ALLOW_ALL & \
~MT_PROT_TXOP_ALLOW_MM40 & \

4
drivers/net/wireless/mediatek/mt76/mt76x02_util.c
View File

@ -661,6 +661,10 @@ void mt76x02_bss_info_changed(struct ieee80211_hw *hw,
tasklet_enable(&dev->pre_tbtt_tasklet);
}
if (changed & BSS_CHANGED_HT || changed & BSS_CHANGED_ERP_CTS_PROT)
mt76x02_mac_set_tx_protection(dev, info->use_cts_prot,
info->ht_operation_mode);
if (changed & BSS_CHANGED_BEACON_INT) {
mt76_rmw_field(dev, MT_BEACON_TIME_CFG,
MT_BEACON_TIME_CFG_INTVAL,