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@xxxxxxxxxxxx>
Signed-off-by: Shayne Chen <shayne.chen@xxxxxxxxxxxx>
---
.../wireless/mediatek/mt76/mt7915/debugfs.c | 13 ++++++
.../net/wireless/mediatek/mt76/mt7915/mcu.c | 46 +++++++++++++++++++
.../net/wireless/mediatek/mt76/mt7915/mcu.h | 28 +++++++++++
.../wireless/mediatek/mt76/mt7915/mt7915.h | 2 +
4 files changed, 89 insertions(+)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/debugfs.c b/drivers/net/wireless/mediatek/mt76/mt7915/debugfs.c
index 27f523d69618..181f42fcdeda 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/debugfs.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/debugfs.c
@@ -302,6 +302,18 @@ 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)
{
@@ -362,5 +374,6 @@ 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);
}
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
index 74ca69ec3034..b80cc5e2448f 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
@@ -1774,6 +1774,52 @@ 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)
{
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.h b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.h
index 52b420210908..2b2708828c1a 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.h
@@ -823,6 +823,34 @@ 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,
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h b/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h
index ae3866d0a47a..c9015fa25156 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h
@@ -302,6 +302,8 @@ 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,
--
2.18.0
