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wifi: mt76: mt7996: Add mcu APIs to enable/disable vif links.

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Introduce mt7996_mcu_mld_reconf_stop_link and mt7996_mcu_mld_link_oper
utility routines in order to communicate to the mcu fw to disable/enable
a specific vif link. Please note these APIs are currently supported by
the MT7996 firmware only in AP mode.

Signed-off-by: Shayne Chen <shayne.chen@mediatek.com>
Co-developed-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://patch.msgid.link/20260315-mt7996-mlo-link-reconf-v1-5-a8a634fbc927@kernel.org
Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Shayne Chen 2026-03-15 11:26:28 +01:00 committed by Felix Fietkau
parent 08813703ac
commit e7ec71d9f8
5 changed files with 138 additions and 18 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.h
View File

@ -1319,6 +1319,7 @@ enum {
MCU_UNI_CMD_ASSERT_DUMP = 0x6f,
MCU_UNI_CMD_EXT_EEPROM_CTRL = 0x74,
MCU_UNI_CMD_RADIO_STATUS = 0x80,
MCU_UNI_CMD_MLD = 0x82,
MCU_UNI_CMD_SDO = 0x88,
};
@ -1394,6 +1395,7 @@ enum {
UNI_BSS_INFO_MLD = 26,
UNI_BSS_INFO_PM_DISABLE = 27,
UNI_BSS_INFO_EHT = 30,
UNI_BSS_INFO_MLD_LINK_OP = 36,
};
enum {

48
drivers/net/wireless/mediatek/mt76/mt7996/main.c
View File

@ -307,8 +307,12 @@ int mt7996_vif_link_add(struct mt76_phy *mphy, struct ieee80211_vif *vif,
int mld_idx, idx, ret;
if ((mvif->mt76.valid_links & BIT(link_conf->link_id)) &&
!mlink->offchannel)
!mlink->offchannel) {
if (vif->type == NL80211_IFTYPE_AP)
return mt7996_mcu_mld_link_oper(dev, link_conf, link,
true);
return 0;
}
mlink->idx = __ffs64(~dev->mt76.vif_mask);
if (mlink->idx >= mt7996_max_interface_num(dev))
@ -453,6 +457,7 @@ void mt7996_vif_link_remove(struct mt76_phy *mphy, struct ieee80211_vif *vif,
struct mt7996_vif_link *link = container_of(mlink, struct mt7996_vif_link, mt76);
struct mt7996_vif *mvif = (struct mt7996_vif *)vif->drv_priv;
struct mt7996_sta_link *msta_link = &link->msta_link;
unsigned int link_id = msta_link->wcid.link_id;
struct mt7996_phy *phy = mphy->priv;
/* Hw requires to destroy active links tearing down the interface, so
@ -460,26 +465,33 @@ void mt7996_vif_link_remove(struct mt76_phy *mphy, struct ieee80211_vif *vif,
*/
if (mlink->wcid->offchannel) {
mt7996_vif_link_destroy(phy, link, vif, link_conf);
} else if (vif->txq &&
mvif->mt76.deflink_id == msta_link->wcid.link_id) {
struct ieee80211_bss_conf *iter;
struct mt76_txq *mtxq;
unsigned int link_id;
} else {
if (vif->type == NL80211_IFTYPE_AP) {
mt7996_mcu_mld_reconf_stop_link(phy->dev, vif,
BIT(link_id));
mt7996_mcu_mld_link_oper(phy->dev, link_conf, link,
false);
}
mvif->mt76.deflink_id = IEEE80211_LINK_UNSPECIFIED;
mtxq = (struct mt76_txq *)vif->txq->drv_priv;
/* Primary link will be removed, look for a new one */
for_each_vif_active_link(vif, iter, link_id) {
if (link_id == msta_link->wcid.link_id)
continue;
if (vif->txq && mvif->mt76.deflink_id == link_id) {
struct ieee80211_bss_conf *iter;
struct mt76_txq *mtxq;
link = mt7996_vif_link(phy->dev, vif, link_id);
if (!link)
continue;
mvif->mt76.deflink_id = IEEE80211_LINK_UNSPECIFIED;
mtxq = (struct mt76_txq *)vif->txq->drv_priv;
/* Primary link will be removed, look for a new one */
for_each_vif_active_link(vif, iter, link_id) {
if (link_id == msta_link->wcid.link_id)
continue;
mtxq->wcid = link->msta_link.wcid.idx;
mvif->mt76.deflink_id = link_id;
break;
link = mt7996_vif_link(phy->dev, vif, link_id);
if (!link)
continue;
mtxq->wcid = link->msta_link.wcid.idx;
mvif->mt76.deflink_id = link_id;
break;
}
}
}
}

66
drivers/net/wireless/mediatek/mt76/mt7996/mcu.c
View File

@ -2583,6 +2583,72 @@ mt7996_mcu_add_group(struct mt7996_dev *dev, struct mt7996_vif_link *link,
sizeof(req), true);
}
int mt7996_mcu_mld_reconf_stop_link(struct mt7996_dev *dev,
struct ieee80211_vif *vif,
u16 removed_links)
{
unsigned long rem_links = removed_links;
struct mld_reconf_stop_link *sl;
struct mld_req_hdr hdr = {};
unsigned int link_id;
struct sk_buff *skb;
struct tlv *tlv;
skb = mt76_mcu_msg_alloc(&dev->mt76, NULL, sizeof(hdr) + sizeof(*sl));
if (!skb)
return -ENOMEM;
memcpy(hdr.mld_addr, vif->addr, ETH_ALEN);
skb_put_data(skb, &hdr, sizeof(hdr));
tlv = mt7996_mcu_add_uni_tlv(skb, UNI_CMD_MLD_RECONF_STOP_LINK,
sizeof(*sl));
sl = (struct mld_reconf_stop_link *)tlv;
sl->link_bitmap = cpu_to_le16(removed_links);
for_each_set_bit(link_id, &rem_links, IEEE80211_MLD_MAX_NUM_LINKS) {
struct mt7996_vif_link *link;
link = mt7996_vif_link(dev, vif, link_id);
if (!link)
continue;
sl->bss_idx[link_id] = link->mt76.idx;
}
return mt76_mcu_skb_send_msg(&dev->mt76, skb, MCU_WM_UNI_CMD(MLD),
true);
}
int mt7996_mcu_mld_link_oper(struct mt7996_dev *dev,
struct ieee80211_bss_conf *link_conf,
struct mt7996_vif_link *link, bool add)
{
struct ieee80211_vif *vif = link_conf->vif;
struct mt7996_vif *mvif = (struct mt7996_vif *)vif->drv_priv;
struct bss_mld_link_op_tlv *mld_op;
struct sk_buff *skb;
struct tlv *tlv;
skb = __mt7996_mcu_alloc_bss_req(&dev->mt76, &link->mt76,
MT7996_BSS_UPDATE_MAX_SIZE);
if (IS_ERR(skb))
return PTR_ERR(skb);
tlv = mt7996_mcu_add_uni_tlv(skb, UNI_BSS_INFO_MLD_LINK_OP,
sizeof(*mld_op));
mld_op = (struct bss_mld_link_op_tlv *)tlv;
mld_op->link_operation = add;
mld_op->own_mld_id = link->mld_idx;
mld_op->link_id = link_conf->link_id;
mld_op->group_mld_id = add ? mvif->mld_group_idx : 0xff;
mld_op->remap_idx = add ? mvif->mld_remap_idx : 0xff;
memcpy(mld_op->mac_addr, vif->addr, ETH_ALEN);
return mt76_mcu_skb_send_msg(&dev->mt76, skb,
MCU_WMWA_UNI_CMD(BSS_INFO_UPDATE), true);
}
static void
mt7996_mcu_sta_mld_setup_tlv(struct mt7996_dev *dev, struct sk_buff *skb,
struct ieee80211_vif *vif,

34
drivers/net/wireless/mediatek/mt76/mt7996/mcu.h
View File

@ -524,6 +524,18 @@ struct bss_prot_tlv {
__le32 prot_mode;
} __packed;
struct bss_mld_link_op_tlv {
__le16 tag;
__le16 len;
u8 group_mld_id;
u8 own_mld_id;
u8 mac_addr[ETH_ALEN];
u8 remap_idx;
u8 link_operation;
u8 link_id;
u8 rsv[2];
} __packed;
struct sta_rec_ht_uni {
__le16 tag;
__le16 len;
@ -697,6 +709,28 @@ struct mld_setup_link {
u8 __rsv;
} __packed;
struct mld_req_hdr {
u8 ver;
u8 mld_addr[ETH_ALEN];
u8 mld_idx;
u8 flag;
u8 rsv[3];
u8 buf[];
} __packed;
struct mld_reconf_stop_link {
__le16 tag;
__le16 len;
__le16 link_bitmap;
u8 rsv[2];
u8 bss_idx[16];
} __packed;
enum {
UNI_CMD_MLD_RECONF_AP_REM_TIMER = 0x03,
UNI_CMD_MLD_RECONF_STOP_LINK = 0x04,
};
struct hdr_trans_en {
__le16 tag;
__le16 len;

6
drivers/net/wireless/mediatek/mt76/mt7996/mt7996.h
View File

@ -776,6 +776,12 @@ int mt7996_mcu_get_all_sta_info(struct mt7996_phy *phy, u16 tag);
int mt7996_mcu_wed_rro_reset_sessions(struct mt7996_dev *dev, u16 id);
int mt7996_mcu_set_sniffer_mode(struct mt7996_phy *phy, bool enabled);
int mt7996_mcu_set_dup_wtbl(struct mt7996_dev *dev);
int mt7996_mcu_mld_reconf_stop_link(struct mt7996_dev *dev,
struct ieee80211_vif *vif,
u16 removed_links);
int mt7996_mcu_mld_link_oper(struct mt7996_dev *dev,
struct ieee80211_bss_conf *link_conf,
struct mt7996_vif_link *link, bool add);
static inline bool mt7996_has_hwrro(struct mt7996_dev *dev)
{