[PATCH mt76] wifi: mt76: mt7996: Add eMLSR support
Lorenzo Bianconi
lorenzo at kernel.org
Tue Feb 3 00:32:02 PST 2026
From: MeiChia Chiu <MeiChia.Chiu at mediatek.com>
Implement set_eml_op_mode mac80211 callback in order to introduce eMLSR
support.
Tested-by: Christian Marangi <ansuelsmth at gmail.com>
Signed-off-by: MeiChia Chiu <MeiChia.Chiu at mediatek.com>
Co-developed-by: Lorenzo Bianconi <lorenzo at kernel.org>
Signed-off-by: Lorenzo Bianconi <lorenzo at kernel.org>
---
.../net/wireless/mediatek/mt76/mt76_connac_mcu.h | 9 ++++
drivers/net/wireless/mediatek/mt76/mt7996/main.c | 16 +++++++
drivers/net/wireless/mediatek/mt76/mt7996/mcu.c | 55 ++++++++++++++++++++++
drivers/net/wireless/mediatek/mt76/mt7996/mt7996.h | 4 ++
4 files changed, 84 insertions(+)
diff --git a/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.h b/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.h
index f44977f9093da76a9f5e2b4d7ce147de28c5b18e..b8629c0a1639b3f55d2133bdea28fa6cae552cac 100644
--- a/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.h
+++ b/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.h
@@ -628,6 +628,13 @@ struct sta_rec_tx_proc {
__le32 flag;
} __packed;
+struct sta_rec_eml_op {
+ __le16 tag;
+ __le16 len;
+ u8 link_bitmap;
+ u8 link_ant_num[3];
+} __packed;
+
/* wtbl_rec */
struct wtbl_req_hdr {
@@ -796,6 +803,7 @@ struct wtbl_raw {
sizeof(struct sta_rec_he_6g_capa) + \
sizeof(struct sta_rec_pn_info) + \
sizeof(struct sta_rec_tx_proc) + \
+ sizeof(struct sta_rec_eml_op) + \
sizeof(struct tlv) + \
MT76_CONNAC_WTBL_UPDATE_MAX_SIZE)
@@ -832,6 +840,7 @@ enum {
STA_REC_PN_INFO = 0x26,
STA_REC_KEY_V3 = 0x27,
STA_REC_HDRT = 0x28,
+ STA_REC_EML_OP = 0x29,
STA_REC_HDR_TRANS = 0x2B,
STA_REC_MAX_NUM
};
diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/main.c b/drivers/net/wireless/mediatek/mt76/mt7996/main.c
index 7046bf26d8ed6776ea114592f8b89c8b2a605339..48e4cd5af9293cedb9018fd9148dceac67bc4653 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7996/main.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7996/main.c
@@ -2368,6 +2368,21 @@ mt7996_reconfig_complete(struct ieee80211_hw *hw,
MT7996_WATCHDOG_TIME);
}
+static int
+mt7996_set_eml_op_mode(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
+ struct ieee80211_sta *sta,
+ struct ieee80211_eml_params *eml_params)
+{
+ struct mt7996_dev *dev = mt7996_hw_dev(hw);
+ int ret;
+
+ mutex_lock(&dev->mt76.mutex);
+ ret = mt7996_mcu_set_emlsr_mode(dev, vif, sta, eml_params);
+ mutex_unlock(&dev->mt76.mutex);
+
+ return ret;
+}
+
const struct ieee80211_ops mt7996_ops = {
.add_chanctx = mt76_add_chanctx,
.remove_chanctx = mt76_remove_chanctx,
@@ -2431,4 +2446,5 @@ const struct ieee80211_ops mt7996_ops = {
.change_vif_links = mt7996_change_vif_links,
.change_sta_links = mt7996_mac_sta_change_links,
.reconfig_complete = mt7996_reconfig_complete,
+ .set_eml_op_mode = mt7996_set_eml_op_mode,
};
diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c
index 8e1c8e1d6a99f093a2b7d7dc3a0c56f3a4bc220b..3098bddc5f6d6d33433bc653d5ef63bbe5c740fb 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7996/mcu.c
@@ -1302,6 +1302,61 @@ int mt7996_mcu_set_protection(struct mt7996_phy *phy, struct mt7996_vif_link *li
MCU_WM_UNI_CMD(BSS_INFO_UPDATE), true);
}
+int mt7996_mcu_set_emlsr_mode(struct mt7996_dev *dev,
+ struct ieee80211_vif *vif,
+ struct ieee80211_sta *sta,
+ struct ieee80211_eml_params *eml_params)
+{
+ struct mt7996_sta *msta = (struct mt7996_sta *)sta->drv_priv;
+ struct mt7996_sta_link *msta_link;
+ struct sta_rec_eml_op *eml_op;
+ struct mt7996_vif_link *link;
+ struct sk_buff *skb;
+ struct tlv *tlv;
+
+ msta_link = mt76_dereference(msta->link[eml_params->link_id],
+ &dev->mt76);
+ if (!msta_link)
+ return -EINVAL;
+
+ link = mt7996_vif_link(dev, vif, eml_params->link_id);
+ if (!link)
+ return -EINVAL;
+
+ skb = __mt76_connac_mcu_alloc_sta_req(&dev->mt76, &link->mt76,
+ &msta_link->wcid,
+ MT7996_STA_UPDATE_MAX_SIZE);
+ if (IS_ERR(skb))
+ return PTR_ERR(skb);
+
+ tlv = mt76_connac_mcu_add_tlv(skb, STA_REC_EML_OP, sizeof(*eml_op));
+ eml_op = (struct sta_rec_eml_op *)tlv;
+ eml_op->link_bitmap = 0;
+
+ if (eml_params->control & IEEE80211_EML_CTRL_EMLSR_MODE) {
+ unsigned long link_bitmap = eml_params->link_bitmap;
+ unsigned int link_id;
+
+ for_each_set_bit(link_id, &link_bitmap,
+ IEEE80211_MLD_MAX_NUM_LINKS) {
+ struct mt76_phy *mphy;
+
+ link = mt7996_vif_link(dev, vif, link_id);
+ if (!link)
+ continue;
+
+ mphy = mt76_vif_link_phy(&link->mt76);
+ if (!mphy)
+ continue;
+
+ eml_op->link_bitmap |= BIT(mphy->band_idx);
+ }
+ }
+
+ return mt76_mcu_skb_send_msg(&dev->mt76, skb,
+ MCU_WMWA_UNI_CMD(STA_REC_UPDATE), true);
+}
+
int mt7996_mcu_set_timing(struct mt7996_phy *phy, struct ieee80211_vif *vif,
struct ieee80211_bss_conf *link_conf)
{
diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/mt7996.h b/drivers/net/wireless/mediatek/mt76/mt7996/mt7996.h
index 3ff730e36fa60830cc9ba5311643b008860cec22..c5d60c273cf8e15e3d54e2d851acbd83ce69719d 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7996/mt7996.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7996/mt7996.h
@@ -875,6 +875,10 @@ int mt7996_mcu_wtbl_update_hdr_trans(struct mt7996_dev *dev,
struct mt7996_vif_link *link,
struct mt7996_sta_link *msta_link);
int mt7996_mcu_cp_support(struct mt7996_dev *dev, u8 mode);
+int mt7996_mcu_set_emlsr_mode(struct mt7996_dev *dev,
+ struct ieee80211_vif *vif,
+ struct ieee80211_sta *sta,
+ struct ieee80211_eml_params *eml_params);
#ifdef CONFIG_MAC80211_DEBUGFS
void mt7996_sta_add_debugfs(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
struct ieee80211_sta *sta, struct dentry *dir);
---
base-commit: 4eefc435c985f4dfdba9afb1c705f0e17377c084
change-id: 20260203-mt7996-emlsr-9cc8a684ccba
Best regards,
--
Lorenzo Bianconi <lorenzo at kernel.org>
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