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mt76: mt7915: set peer Tx fixed rate through debugfs 

Driver can manually set fixed rate for each peer through debugfs.

May use .set_bitrate_mask callback and iterate stations under the
current vif to achieve the aim once it supports HE rate.

Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Shayne Chen <shayne.chen@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Ryder Lee 2020-04-25 03:32:36 +08:00 committed by Felix Fietkau
parent b02eafae42
commit 9fac3c81ee
4 changed files with 89 additions and 0 deletions
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13
drivers/net/wireless/mediatek/mt76/mt7915/debugfs.c
View File

@ -305,6 +305,18 @@ int mt7915_init_debugfs(struct mt7915_dev *dev)
/** per-station debugfs **/
/* usage: <tx mode> <ldpc> <stbc> <bw> <gi> <nss> <mcs> */
static int mt7915_sta_fixed_rate_set(void *data, u64 rate)
{
struct ieee80211_sta *sta = data;
struct mt7915_sta *msta = (struct mt7915_sta *)sta->drv_priv;
return mt7915_mcu_set_fixed_rate(msta->vif->dev, sta, rate);
}
DEFINE_DEBUGFS_ATTRIBUTE(fops_fixed_rate, NULL,
mt7915_sta_fixed_rate_set, "%llx\n");
static int
mt7915_sta_stats_read(struct seq_file *s, void *data)
{
@ -365,5 +377,6 @@ static const struct file_operations fops_sta_stats = {
void mt7915_sta_add_debugfs(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
struct ieee80211_sta *sta, struct dentry *dir)
{
debugfs_create_file("fixed_rate", 0600, dir, sta, &fops_fixed_rate);
debugfs_create_file("stats", 0400, dir, sta, &fops_sta_stats);
}

46
drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
View File

@ -1735,6 +1735,52 @@ int mt7915_mcu_add_sta(struct mt7915_dev *dev, struct ieee80211_vif *vif,
return 0;
}
int mt7915_mcu_set_fixed_rate(struct mt7915_dev *dev,
struct ieee80211_sta *sta, u32 rate)
{
struct mt7915_sta *msta = (struct mt7915_sta *)sta->drv_priv;
struct mt7915_vif *mvif = msta->vif;
struct sta_rec_ra_fixed *ra;
struct sk_buff *skb;
struct tlv *tlv;
skb = mt7915_mcu_alloc_sta_req(dev, mvif, msta,
MT7915_STA_UPDATE_MAX_SIZE);
if (IS_ERR(skb))
return PTR_ERR(skb);
tlv = mt7915_mcu_add_tlv(skb, STA_REC_RA_UPDATE, sizeof(*ra));
ra = (struct sta_rec_ra_fixed *)tlv;
if (!rate) {
ra->field = cpu_to_le32(RATE_PARAM_AUTO);
goto out;
} else {
ra->field = cpu_to_le32(RATE_PARAM_FIXED);
}
ra->phy.type = FIELD_GET(RATE_CFG_PHY_TYPE, rate);
ra->phy.bw = FIELD_GET(RATE_CFG_BW, rate);
ra->phy.nss = FIELD_GET(RATE_CFG_NSS, rate);
ra->phy.mcs = FIELD_GET(RATE_CFG_MCS, rate);
ra->phy.stbc = FIELD_GET(RATE_CFG_STBC, rate);
if (ra->phy.bw)
ra->phy.ldpc = 7;
else
ra->phy.ldpc = FIELD_GET(RATE_CFG_LDPC, rate) * 7;
/* HT/VHT - SGI: 1, LGI: 0; HE - SGI: 0, MGI: 1, LGI: 2 */
if (ra->phy.type > MT_PHY_TYPE_VHT)
ra->phy.sgi = ra->phy.mcs * 85;
else
ra->phy.sgi = ra->phy.mcs * 15;
out:
return __mt76_mcu_skb_send_msg(&dev->mt76, skb,
MCU_EXT_CMD_STA_REC_UPDATE, true);
}
int mt7915_mcu_add_dev_info(struct mt7915_dev *dev,
struct ieee80211_vif *vif, bool enable)
{

28
drivers/net/wireless/mediatek/mt76/mt7915/mcu.h
View File

@ -803,6 +803,34 @@ struct sta_rec_ra {
struct ra_phy phy;
} __packed;
struct sta_rec_ra_fixed {
__le16 tag;
__le16 len;
__le32 field;
u8 op_mode;
u8 op_vht_chan_width;
u8 op_vht_rx_nss;
u8 op_vht_rx_nss_type;
struct ra_phy phy;
u8 spe_en;
u8 short_preamble;
u8 is_5g;
u8 mmps_mode;
} __packed;
#define RATE_PARAM_FIXED 3
#define RATE_PARAM_AUTO 20
#define RATE_CFG_MCS GENMASK(3, 0)
#define RATE_CFG_NSS GENMASK(7, 4)
#define RATE_CFG_GI GENMASK(11, 8)
#define RATE_CFG_BW GENMASK(15, 12)
#define RATE_CFG_STBC GENMASK(19, 16)
#define RATE_CFG_LDPC GENMASK(23, 20)
#define RATE_CFG_PHY_TYPE GENMASK(27, 24)
enum {
STA_REC_BASIC,
STA_REC_RA,

2
drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h
View File

@ -303,6 +303,8 @@ int mt7915_mcu_add_smps(struct mt7915_dev *dev, struct ieee80211_vif *vif,
struct ieee80211_sta *sta);
int mt7915_mcu_set_chan_info(struct mt7915_phy *phy, int cmd);
int mt7915_mcu_set_tx(struct mt7915_dev *dev, struct ieee80211_vif *vif);
int mt7915_mcu_set_fixed_rate(struct mt7915_dev *dev,
struct ieee80211_sta *sta, u32 rate);
int mt7915_mcu_set_eeprom(struct mt7915_dev *dev);
int mt7915_mcu_get_eeprom(struct mt7915_dev *dev, u32 offset);
int mt7915_mcu_set_mac(struct mt7915_dev *dev, int band, bool enable,