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wifi: mt76: mt7996: Destroy vif active links in mt7996_remove_interface()

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MT7996 hw requires to remove active links from the mcu BSSINFO table
destroying the interface. For this reason introduce mt7996_vif_link_destroy
routine and remove active (non-offchannel) vif links running
mt7996_remove_interface routine.
This is a preliminary patch in order to support MLO link reconfiguration
in MT7996 driver.

Co-developed-by: Shayne Chen <shayne.chen@mediatek.com>
Signed-off-by: Shayne Chen <shayne.chen@mediatek.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://patch.msgid.link/20260315-mt7996-mlo-link-reconf-v1-4-a8a634fbc927@kernel.org
Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Lorenzo Bianconi 2026-03-15 11:26:27 +01:00 committed by Felix Fietkau
parent c8d22f28ea
commit 08813703ac
1 changed files with 72 additions and 36 deletions
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108
drivers/net/wireless/mediatek/mt76/mt7996/main.c
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@ -306,6 +306,10 @@ 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)
return 0;
mlink->idx = __ffs64(~dev->mt76.vif_mask);
if (mlink->idx >= mt7996_max_interface_num(dev))
return -ENOSPC;
@ -393,65 +397,40 @@ int mt7996_vif_link_add(struct mt76_phy *mphy, struct ieee80211_vif *vif,
return 0;
}
void mt7996_vif_link_remove(struct mt76_phy *mphy, struct ieee80211_vif *vif,
struct ieee80211_bss_conf *link_conf,
struct mt76_vif_link *mlink)
static void mt7996_vif_link_destroy(struct mt7996_phy *phy,
struct mt7996_vif_link *link,
struct ieee80211_vif *vif,
struct ieee80211_bss_conf *link_conf)
{
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;
struct mt7996_dev *dev = phy->dev;
struct mt76_vif_link *mlink = &link->mt76;
struct mt7996_key_iter_data it = {
.cmd = SET_KEY,
.link_id = link_id,
};
struct mt7996_dev *dev = phy->dev;
int idx = msta_link->wcid.idx;
if (!mlink->wcid->offchannel)
ieee80211_iter_keys(mphy->hw, vif, mt7996_key_iter, &it);
if (!link_conf)
link_conf = &vif->bss_conf;
if (!mlink->wcid->offchannel)
ieee80211_iter_keys(phy->mt76->hw, vif, mt7996_key_iter, &it);
mt7996_mcu_add_sta(dev, link_conf, NULL, link, NULL,
CONN_STATE_DISCONNECT, false);
mt7996_mcu_add_bss_info(phy, vif, link_conf, mlink, msta_link, false);
mt7996_mcu_add_dev_info(phy, vif, link_conf, mlink, false);
rcu_assign_pointer(dev->mt76.wcid[idx], NULL);
if (!mlink->wcid->offchannel) {
if (vif->txq && mvif->mt76.deflink_id == link_id) {
struct ieee80211_bss_conf *iter;
struct mt76_txq *mtxq;
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) {
struct mt7996_vif_link *link;
if (link_id == msta_link->wcid.link_id)
continue;
link = mt7996_vif_link(dev, vif, link_id);
if (!link)
continue;
mtxq->wcid = link->msta_link.wcid.idx;
mvif->mt76.deflink_id = link_id;
break;
}
}
mvif->mt76.valid_links &= ~BIT(link_id);
}
dev->mt76.vif_mask &= ~BIT_ULL(mlink->idx);
dev->mld_idx_mask &= ~BIT_ULL(link->mld_idx);
phy->omac_mask &= ~BIT_ULL(mlink->omac_idx);
if (!mlink->wcid->offchannel)
mvif->mt76.valid_links &= ~BIT(link_id);
spin_lock_bh(&dev->mt76.sta_poll_lock);
if (!list_empty(&msta_link->wcid.poll_list))
@ -467,6 +446,44 @@ void mt7996_vif_link_remove(struct mt76_phy *mphy, struct ieee80211_vif *vif,
}
}
void mt7996_vif_link_remove(struct mt76_phy *mphy, struct ieee80211_vif *vif,
struct ieee80211_bss_conf *link_conf,
struct mt76_vif_link *mlink)
{
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;
struct mt7996_phy *phy = mphy->priv;
/* Hw requires to destroy active links tearing down the interface, so
* postpone it removing the interface.
*/
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;
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;
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;
}
}
}
static void mt7996_phy_set_rxfilter(struct mt7996_phy *phy)
{
struct mt7996_dev *dev = phy->dev;
@ -570,10 +587,29 @@ static void mt7996_remove_iter(void *data, u8 *mac, struct ieee80211_vif *vif)
static void mt7996_remove_interface(struct ieee80211_hw *hw,
struct ieee80211_vif *vif)
{
struct mt7996_vif *mvif = (struct mt7996_vif *)vif->drv_priv;
unsigned long rem_links = mvif->mt76.valid_links;
struct mt7996_dev *dev = mt7996_hw_dev(hw);
struct mt7996_radio_data rdata = {};
unsigned int link_id;
int i;
/* Remove all active links */
for_each_set_bit(link_id, &rem_links, IEEE80211_MLD_MAX_NUM_LINKS) {
struct mt7996_vif_link *link;
struct mt7996_phy *phy;
link = mt7996_vif_link(dev, vif, link_id);
if (!link)
continue;
phy = __mt7996_phy(dev, link->msta_link.wcid.phy_idx);
if (!phy)
continue;
mt7996_vif_link_destroy(phy, link, vif, NULL);
}
ieee80211_iterate_active_interfaces_mtx(hw, 0, mt7996_remove_iter,
&rdata);
mt76_vif_cleanup(&dev->mt76, vif);