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Message-ID: <3903ee21-c87d-4a2c-b688-d64a5796b6c0@nbd.name>
Date: Wed, 25 Jun 2025 13:00:18 +0200
From: Felix Fietkau <nbd@....name>
To: Shengyu Qu <wiagn233@...look.com>, pkshih@...ltek.com,
lorenzo@...nel.org, ryder.lee@...iatek.com, shayne.chen@...iatek.com,
sean.wang@...iatek.com, matthias.bgg@...il.com,
angelogioacchino.delregno@...labora.com, johannes.berg@...el.com,
miriam.rachel.korenblit@...el.com, christophe.jaillet@...adoo.fr,
greearb@...delatech.com, howard-yh.hsu@...iatek.com,
StanleyYP.Wang@...iatek.com, deren.wu@...iatek.com,
chui-hao.chiu@...iatek.com, quic_adisi@...cinc.com, gustavoars@...nel.org,
razvan.grigore@...pirebyte.ro, linux-wireless@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
linux-mediatek@...ts.infradead.org
Cc: Sujuan Chen <sujuan.chen@...iatek.com>, Bo Jiao <bo.jiao@...iatek.com>
Subject: Re: [PATCH v10 RESEND] wifi: mt76: mt7915: add wds support when wed
is enabled
On 25.06.25 12:18, Felix Fietkau wrote:
> On 24.06.25 16:11, Shengyu Qu wrote:
>> Hi Felix,
>>
>> Please, tell me if this patch needs any polishing. I really don't know
>> why this patch still not get merged after such a long time(and 2x
>> resend), especially it already got a Reviewed-by and is a bugfix.
>
> Hi Shengyu,
>
> sorry it took such a long time for me to take a look at this patch.
> I don't see how it can even work properly in its current form, because
> of at least one bug:
>
> When switching from non-wds to wds mode, the code calls
> mt7915_mac_sta_add in order to create the new sta. However, after
> changes that I made a while back, this function does not actually upload
> the station to the MCU anymore, since it is called on the NOTEXIST->NONE
> transition before assoc. Without corresponding ASSOC/AUTHORIZE events
> (handled by mt7915_mac_sta_event), the firmware doesn't get any data for
> the new wcid.
>
> That said, I finally got around to starting to rework your patch myself.
> I will let you know when I have something ready for testing, hopefully
> later today.
Here's my first draft:
---
diff --git a/drivers/net/wireless/mediatek/mt76/mt76.h b/drivers/net/wireless/mediatek/mt76/mt76.h
index 14927a92f9d1..f1d1b0ebd074 100644
--- a/drivers/net/wireless/mediatek/mt76/mt76.h
+++ b/drivers/net/wireless/mediatek/mt76/mt76.h
@@ -28,6 +28,9 @@
#define MT76_TOKEN_FREE_THR 64
+#define MT76_WED_WDS_MIN 256
+#define MT76_WED_WDS_MAX 272
+
#define MT_QFLAG_WED_RING GENMASK(1, 0)
#define MT_QFLAG_WED_TYPE GENMASK(4, 2)
#define MT_QFLAG_WED BIT(5)
@@ -1181,6 +1184,7 @@ void mt76_wed_dma_reset(struct mt76_dev *dev);
int mt76_wed_net_setup_tc(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
struct net_device *netdev, enum tc_setup_type type,
void *type_data);
+
#ifdef CONFIG_NET_MEDIATEK_SOC_WED
u32 mt76_wed_init_rx_buf(struct mtk_wed_device *wed, int size);
int mt76_wed_offload_enable(struct mtk_wed_device *wed);
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/debugfs.c b/drivers/net/wireless/mediatek/mt76/mt7915/debugfs.c
index b287b7d9394e..ec2287459587 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/debugfs.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/debugfs.c
@@ -1385,7 +1385,7 @@ static ssize_t mt7915_sta_fixed_rate_set(struct file *file,
out:
vif = container_of((void *)msta->vif, struct ieee80211_vif, drv_priv);
- ret = mt7915_mcu_set_fixed_rate_ctrl(dev, vif, sta, &phy, field);
+ ret = mt7915_mcu_set_fixed_rate_ctrl(dev, vif, sta, &msta->wcid, &phy, field);
if (ret)
return -EFAULT;
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c
index 9400e4af2a04..e3e65848a17f 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c
@@ -1991,7 +1991,7 @@ void mt7915_mac_sta_rc_work(struct work_struct *work)
if (changed & (IEEE80211_RC_SUPP_RATES_CHANGED |
IEEE80211_RC_NSS_CHANGED |
IEEE80211_RC_BW_CHANGED))
- mt7915_mcu_add_rate_ctrl(dev, vif, sta, true);
+ mt7915_mcu_add_rate_ctrl(dev, vif, sta, &msta->wcid, true);
if (changed & IEEE80211_RC_SMPS_CHANGED)
mt7915_mcu_add_smps(dev, vif, sta);
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/main.c b/drivers/net/wireless/mediatek/mt76/mt7915/main.c
index fe0639c14bf9..0227ea8665f1 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/main.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/main.c
@@ -747,7 +747,13 @@ int mt7915_mac_sta_add(struct mt76_dev *mdev, struct ieee80211_vif *vif,
bool ext_phy = mvif->phy != &dev->phy;
int idx;
- idx = mt76_wcid_alloc(dev->mt76.wcid_mask, MT7915_WTBL_STA);
+ if (mtk_wed_device_active(&dev->mt76.mmio.wed) &&
+ !is_mt7915(&dev->mt76) &&
+ test_bit(MT_WCID_FLAG_4ADDR, &msta->wcid.flags))
+ idx = __mt76_wcid_alloc(mdev->wcid_mask, MT76_WED_WDS_MIN,
+ MT76_WED_WDS_MAX);
+ else
+ idx = mt76_wcid_alloc(mdev->wcid_mask, MT7915_WTBL_STA);
if (idx < 0)
return -ENOSPC;
@@ -836,7 +842,7 @@ int mt7915_mac_sta_event(struct mt76_dev *mdev, struct ieee80211_vif *vif,
addr = mt7915_mac_wtbl_lmac_addr(dev, msta->wcid.idx, 30);
mt76_rmw_field(dev, addr, GENMASK(7, 0), 0xa0);
- ret = mt7915_mcu_add_rate_ctrl(dev, vif, sta, false);
+ ret = mt7915_mcu_add_rate_ctrl(dev, vif, sta, &msta->wcid, false);
if (ret)
return ret;
@@ -1267,6 +1273,40 @@ mt7915_set_bitrate_mask(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
return 0;
}
+static void mt7915_sta_wed_set_4addr(struct mt7915_dev *dev, struct ieee80211_vif *vif,
+ struct ieee80211_sta *sta)
+{
+ struct mt7915_sta *msta = (struct mt7915_sta *)sta->drv_priv;
+ int min = MT76_WED_WDS_MIN, max = MT76_WED_WDS_MAX;
+ int idx, prev_idx = msta->wcid.idx;
+ struct mt76_wcid wcid = msta->wcid;
+ int state;
+
+ if (!is_mt7915(&dev->mt76))
+ return;
+
+ if (msta->wcid.idx >= min && msta->wcid.idx < max)
+ return;
+
+ idx = __mt76_wcid_alloc(dev->mt76.wcid_mask, min, max);
+ if (idx < 0)
+ return;
+
+ wcid.idx = idx;
+ state = msta->wcid.sta ? CONN_STATE_PORT_SECURE : CONN_STATE_DISCONNECT;
+ __mt7915_mcu_add_sta(dev, vif, sta, &wcid, state, true);
+ mt7915_mcu_add_rate_ctrl(dev, vif, sta, &wcid, false);
+ rcu_assign_pointer(dev->mt76.wcid[idx], &msta->wcid);
+ msta->wcid.idx = idx;
+
+ synchronize_rcu();
+
+ rcu_assign_pointer(dev->mt76.wcid[prev_idx], NULL);
+ mt76_wcid_mask_clear(dev->mt76.wcid_mask, prev_idx);
+ wcid.idx = prev_idx;
+ __mt7915_mcu_add_sta(dev, vif, sta, &wcid, CONN_STATE_DISCONNECT, false);
+}
+
static void mt7915_sta_set_4addr(struct ieee80211_hw *hw,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta,
@@ -1280,6 +1320,9 @@ static void mt7915_sta_set_4addr(struct ieee80211_hw *hw,
else
clear_bit(MT_WCID_FLAG_4ADDR, &msta->wcid.flags);
+ if (mtk_wed_device_active(&dev->mt76.mmio.wed) && enabled)
+ mt7915_sta_wed_set_4addr(dev, vif, sta);
+
if (!msta->wcid.sta)
return;
@@ -1729,15 +1772,19 @@ mt7915_net_fill_forward_path(struct ieee80211_hw *hw,
if (!mtk_wed_device_active(wed))
return -ENODEV;
- if (msta->wcid.idx > 0xff)
+ if (msta->wcid.idx > MT7915_WTBL_STA)
return -EIO;
path->type = DEV_PATH_MTK_WDMA;
path->dev = ctx->dev;
path->mtk_wdma.wdma_idx = wed->wdma_idx;
path->mtk_wdma.bss = mvif->mt76.idx;
- path->mtk_wdma.wcid = is_mt7915(&dev->mt76) ? msta->wcid.idx : 0x3ff;
path->mtk_wdma.queue = phy != &dev->phy;
+ if (test_bit(MT_WCID_FLAG_4ADDR, &msta->wcid.flags) ||
+ is_mt7915(&dev->mt76))
+ path->mtk_wdma.wcid = msta->wcid.idx;
+ else
+ path->mtk_wdma.wcid = 0x3ff;
ctx->dev = NULL;
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
index cf948628e588..26497b580eb6 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
@@ -1359,6 +1359,7 @@ mt7915_mcu_get_mmps_mode(enum ieee80211_smps_mode smps)
int mt7915_mcu_set_fixed_rate_ctrl(struct mt7915_dev *dev,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta,
+ struct mt76_wcid *wcid,
void *data, u32 field)
{
struct mt7915_vif *mvif = (struct mt7915_vif *)vif->drv_priv;
@@ -1430,7 +1431,7 @@ int mt7915_mcu_add_smps(struct mt7915_dev *dev, struct ieee80211_vif *vif,
if (ret)
return ret;
- return mt7915_mcu_set_fixed_rate_ctrl(dev, vif, sta, NULL,
+ return mt7915_mcu_set_fixed_rate_ctrl(dev, vif, sta, &msta->wcid, NULL,
RATE_PARAM_MMPS_UPDATE);
}
@@ -1439,17 +1440,19 @@ mt7915_mcu_set_spe_idx(struct mt7915_dev *dev, struct ieee80211_vif *vif,
struct ieee80211_sta *sta)
{
struct mt7915_vif *mvif = (struct mt7915_vif *)vif->drv_priv;
+ struct mt7915_sta *msta = (struct mt7915_sta *)sta->drv_priv;
struct mt76_phy *mphy = mvif->phy->mt76;
u8 spe_idx = mt76_connac_spe_idx(mphy->antenna_mask);
- return mt7915_mcu_set_fixed_rate_ctrl(dev, vif, sta, &spe_idx,
- RATE_PARAM_SPE_UPDATE);
+ return mt7915_mcu_set_fixed_rate_ctrl(dev, vif, sta, &msta->wcid,
+ &spe_idx, RATE_PARAM_SPE_UPDATE);
}
static int
mt7915_mcu_add_rate_ctrl_fixed(struct mt7915_dev *dev,
struct ieee80211_vif *vif,
- struct ieee80211_sta *sta)
+ struct ieee80211_sta *sta,
+ struct mt76_wcid *wcid)
{
struct mt7915_vif *mvif = (struct mt7915_vif *)vif->drv_priv;
struct cfg80211_chan_def *chandef = &mvif->phy->mt76->chandef;
@@ -1497,7 +1500,7 @@ mt7915_mcu_add_rate_ctrl_fixed(struct mt7915_dev *dev,
/* fixed single rate */
if (nrates == 1) {
- ret = mt7915_mcu_set_fixed_rate_ctrl(dev, vif, sta, &phy,
+ ret = mt7915_mcu_set_fixed_rate_ctrl(dev, vif, sta, wcid, &phy,
RATE_PARAM_FIXED_MCS);
if (ret)
return ret;
@@ -1519,7 +1522,7 @@ mt7915_mcu_add_rate_ctrl_fixed(struct mt7915_dev *dev,
else
mt76_rmw_field(dev, addr, GENMASK(15, 12), phy.sgi);
- ret = mt7915_mcu_set_fixed_rate_ctrl(dev, vif, sta, &phy,
+ ret = mt7915_mcu_set_fixed_rate_ctrl(dev, vif, sta, wcid, &phy,
RATE_PARAM_FIXED_GI);
if (ret)
return ret;
@@ -1527,7 +1530,7 @@ mt7915_mcu_add_rate_ctrl_fixed(struct mt7915_dev *dev,
/* fixed HE_LTF */
if (mask->control[band].he_ltf != GENMASK(7, 0)) {
- ret = mt7915_mcu_set_fixed_rate_ctrl(dev, vif, sta, &phy,
+ ret = mt7915_mcu_set_fixed_rate_ctrl(dev, vif, sta, wcid, &phy,
RATE_PARAM_FIXED_HE_LTF);
if (ret)
return ret;
@@ -1640,15 +1643,14 @@ mt7915_mcu_sta_rate_ctrl_tlv(struct sk_buff *skb, struct mt7915_dev *dev,
}
int mt7915_mcu_add_rate_ctrl(struct mt7915_dev *dev, struct ieee80211_vif *vif,
- struct ieee80211_sta *sta, bool changed)
+ struct ieee80211_sta *sta, struct mt76_wcid *wcid,
+ bool changed)
{
struct mt7915_vif *mvif = (struct mt7915_vif *)vif->drv_priv;
- struct mt7915_sta *msta = (struct mt7915_sta *)sta->drv_priv;
struct sk_buff *skb;
int ret;
- skb = mt76_connac_mcu_alloc_sta_req(&dev->mt76, &mvif->mt76,
- &msta->wcid);
+ skb = mt76_connac_mcu_alloc_sta_req(&dev->mt76, &mvif->mt76, wcid);
if (IS_ERR(skb))
return PTR_ERR(skb);
@@ -1673,7 +1675,7 @@ int mt7915_mcu_add_rate_ctrl(struct mt7915_dev *dev, struct ieee80211_vif *vif,
* and updates as peer fixed rate parameters, which overrides
* sta_rec_ra and firmware rate control algorithm.
*/
- return mt7915_mcu_add_rate_ctrl_fixed(dev, vif, sta);
+ return mt7915_mcu_add_rate_ctrl_fixed(dev, vif, sta, wcid);
}
static int
@@ -1704,8 +1706,9 @@ mt7915_mcu_add_group(struct mt7915_dev *dev, struct ieee80211_vif *vif,
sizeof(req), true);
}
-int mt7915_mcu_add_sta(struct mt7915_dev *dev, struct ieee80211_vif *vif,
- struct ieee80211_sta *sta, int conn_state, bool newly)
+int __mt7915_mcu_add_sta(struct mt7915_dev *dev, struct ieee80211_vif *vif,
+ struct ieee80211_sta *sta, struct mt76_wcid *wcid,
+ int conn_state, bool newly)
{
struct mt7915_vif *mvif = (struct mt7915_vif *)vif->drv_priv;
struct ieee80211_link_sta *link_sta;
@@ -1715,9 +1718,10 @@ int mt7915_mcu_add_sta(struct mt7915_dev *dev, struct ieee80211_vif *vif,
msta = sta ? (struct mt7915_sta *)sta->drv_priv : &mvif->sta;
link_sta = sta ? &sta->deflink : NULL;
+ if (!wcid)
+ wcid = &msta->wcid;
- skb = mt76_connac_mcu_alloc_sta_req(&dev->mt76, &mvif->mt76,
- &msta->wcid);
+ skb = mt76_connac_mcu_alloc_sta_req(&dev->mt76, &mvif->mt76, wcid);
if (IS_ERR(skb))
return PTR_ERR(skb);
@@ -2413,10 +2417,20 @@ int mt7915_mcu_init_firmware(struct mt7915_dev *dev)
mt76_connac_mcu_del_wtbl_all(&dev->mt76);
- if ((mtk_wed_device_active(&dev->mt76.mmio.wed) &&
- is_mt7915(&dev->mt76)) ||
- !mtk_wed_get_rx_capa(&dev->mt76.mmio.wed))
- mt7915_mcu_wa_cmd(dev, MCU_WA_PARAM_CMD(CAPABILITY), 0, 0, 0);
+#if IS_ENABLED(CONFIG_NET_MEDIATEK_SOC_WED)
+ if (mtk_wed_device_active(&dev->mt76.mmio.wed)) {
+ if (is_mt7915(&dev->mt76) ||
+ !mtk_wed_get_rx_capa(&dev->mt76.mmio.wed))
+ ret = mt7915_mcu_wa_cmd(dev, MCU_WA_PARAM_CMD(CAPABILITY),
+ 0, 0, 0);
+ else
+ ret = mt7915_mcu_wa_cmd(dev, MCU_WA_PARAM_CMD(SET),
+ MCU_WA_PARAM_WED_VERSION,
+ dev->mt76.mmio.wed.rev_id, 0);
+ if (ret)
+ return ret;
+ }
+#endif
ret = mt7915_mcu_set_mwds(dev, 1);
if (ret)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.h b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.h
index 086ad89ecd91..989f24cb49eb 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.h
@@ -278,6 +278,7 @@ enum {
MCU_WA_PARAM_PDMA_RX = 0x04,
MCU_WA_PARAM_CPU_UTIL = 0x0b,
MCU_WA_PARAM_RED = 0x0e,
+ MCU_WA_PARAM_WED_VERSION = 0x32,
MCU_WA_PARAM_RED_SETTING = 0x40,
};
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h b/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h
index 2e94347c46d6..c781058a416f 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mt7915.h
@@ -455,8 +455,16 @@ int mt7915_mcu_add_dev_info(struct mt7915_phy *phy,
struct ieee80211_vif *vif, bool enable);
int mt7915_mcu_add_bss_info(struct mt7915_phy *phy,
struct ieee80211_vif *vif, int enable);
-int mt7915_mcu_add_sta(struct mt7915_dev *dev, struct ieee80211_vif *vif,
- struct ieee80211_sta *sta, int conn_state, bool newly);
+int __mt7915_mcu_add_sta(struct mt7915_dev *dev, struct ieee80211_vif *vif,
+ struct ieee80211_sta *sta, struct mt76_wcid *wcid,
+ int conn_state, bool newly);
+static inline int
+mt7915_mcu_add_sta(struct mt7915_dev *dev, struct ieee80211_vif *vif,
+ struct ieee80211_sta *sta, int conn_state, bool newly)
+{
+ return __mt7915_mcu_add_sta(dev, vif, sta, NULL, conn_state, newly);
+}
+
int mt7915_mcu_add_tx_ba(struct mt7915_dev *dev,
struct ieee80211_ampdu_params *params,
bool add);
@@ -472,7 +480,8 @@ int mt7915_mcu_add_beacon(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
int mt7915_mcu_add_obss_spr(struct mt7915_phy *phy, struct ieee80211_vif *vif,
struct ieee80211_he_obss_pd *he_obss_pd);
int mt7915_mcu_add_rate_ctrl(struct mt7915_dev *dev, struct ieee80211_vif *vif,
- struct ieee80211_sta *sta, bool changed);
+ struct ieee80211_sta *sta, struct mt76_wcid *wcid,
+ bool changed);
int mt7915_mcu_add_smps(struct mt7915_dev *dev, struct ieee80211_vif *vif,
struct ieee80211_sta *sta);
int mt7915_set_channel(struct mt76_phy *mphy);
@@ -482,6 +491,7 @@ int mt7915_mcu_update_edca(struct mt7915_dev *dev, void *req);
int mt7915_mcu_set_fixed_rate_ctrl(struct mt7915_dev *dev,
struct ieee80211_vif *vif,
struct ieee80211_sta *sta,
+ struct mt76_wcid *wcid,
void *data, u32 field);
int mt7915_mcu_set_eeprom(struct mt7915_dev *dev);
int mt7915_mcu_get_eeprom(struct mt7915_dev *dev, u32 offset, u8 *read_buf);
diff --git a/drivers/net/wireless/mediatek/mt76/util.c b/drivers/net/wireless/mediatek/mt76/util.c
index 95b3dc96e4c4..9fa60d380ede 100644
--- a/drivers/net/wireless/mediatek/mt76/util.c
+++ b/drivers/net/wireless/mediatek/mt76/util.c
@@ -42,12 +42,19 @@ bool ____mt76_poll_msec(struct mt76_dev *dev, u32 offset, u32 mask, u32 val,
}
EXPORT_SYMBOL_GPL(____mt76_poll_msec);
-int mt76_wcid_alloc(u32 *mask, int size)
+int __mt76_wcid_alloc(u32 *mask, int min, int size)
{
+ u32 min_mask = ~0;
int i, idx = 0, cur;
+ mask += min / 32;
+ min %= 32;
+ if (min > 0)
+ min_mask = ~((1 << min) - 1);
+
for (i = 0; i < DIV_ROUND_UP(size, 32); i++) {
- idx = ffs(~mask[i]);
+ idx = ffs(~mask[i] & min_mask);
+ min_mask = ~0;
if (!idx)
continue;
@@ -62,7 +69,7 @@ int mt76_wcid_alloc(u32 *mask, int size)
return -1;
}
-EXPORT_SYMBOL_GPL(mt76_wcid_alloc);
+EXPORT_SYMBOL_GPL(__mt76_wcid_alloc);
int mt76_get_min_avg_rssi(struct mt76_dev *dev, u8 phy_idx)
{
diff --git a/drivers/net/wireless/mediatek/mt76/util.h b/drivers/net/wireless/mediatek/mt76/util.h
index 260965dde94c..bca2893f980e 100644
--- a/drivers/net/wireless/mediatek/mt76/util.h
+++ b/drivers/net/wireless/mediatek/mt76/util.h
@@ -27,7 +27,12 @@ enum {
#define MT76_INCR(_var, _size) \
(_var = (((_var) + 1) % (_size)))
-int mt76_wcid_alloc(u32 *mask, int size);
+int __mt76_wcid_alloc(u32 *mask, int min, int size);
+
+static inline int mt76_wcid_alloc(u32 *mask, int size)
+{
+ return __mt76_wcid_alloc(mask, 0, size);
+}
static inline void
mt76_wcid_mask_set(u32 *mask, int idx)
--
2.49.0
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