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wifi: mt76: mt7996: fix MLD group index assignment

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Fix extender mode and MBSS issues caused by incorrect assignment of the
MLD group and remap indices.

Fixes: ed01c310ec ("wifi: mt76: mt7996: Fix mt7996_mcu_bss_mld_tlv routine")
Signed-off-by: Shayne Chen <shayne.chen@mediatek.com>
Acked-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://patch.msgid.link/20251106064203.1000505-9-shayne.chen@mediatek.com
Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Shayne Chen
2025-11-06 14:42:00 +08:00
committed by Felix Fietkau
parent 85cd5534a3
commit 4fb3b4e7d1
1 changed files with 40 additions and 18 deletions
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58
drivers/net/wireless/mediatek/mt76/mt7996/main.c
View File

@@ -90,9 +90,11 @@ static void mt7996_stop(struct ieee80211_hw *hw, bool suspend)
{
}
static inline int get_free_idx(u32 mask, u8 start, u8 end)
static inline int get_free_idx(u64 mask, u8 start, u8 end)
{
return ffs(~mask & GENMASK(end, start));
if (~mask & GENMASK_ULL(end, start))
return __ffs64(~mask & GENMASK_ULL(end, start)) + 1;
return 0;
}
static int get_omac_idx(enum nl80211_iftype type, u64 mask)
@@ -308,12 +310,6 @@ int mt7996_vif_link_add(struct mt76_phy *mphy, struct ieee80211_vif *vif,
if (idx < 0)
return -ENOSPC;
if (!dev->mld_idx_mask) { /* first link in the group */
mvif->mld_group_idx = get_own_mld_idx(dev->mld_idx_mask, true);
mvif->mld_remap_idx = get_free_idx(dev->mld_remap_idx_mask,
0, 15);
}
mld_idx = get_own_mld_idx(dev->mld_idx_mask, false);
if (mld_idx < 0)
return -ENOSPC;
@@ -331,10 +327,6 @@ int mt7996_vif_link_add(struct mt76_phy *mphy, struct ieee80211_vif *vif,
return ret;
dev->mt76.vif_mask |= BIT_ULL(mlink->idx);
if (!dev->mld_idx_mask) {
dev->mld_idx_mask |= BIT_ULL(mvif->mld_group_idx);
dev->mld_remap_idx_mask |= BIT_ULL(mvif->mld_remap_idx);
}
dev->mld_idx_mask |= BIT_ULL(link->mld_idx);
phy->omac_mask |= BIT_ULL(mlink->omac_idx);
@@ -424,11 +416,6 @@ void mt7996_vif_link_remove(struct mt76_phy *mphy, struct ieee80211_vif *vif,
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 (!(dev->mld_idx_mask & ~BIT_ULL(mvif->mld_group_idx))) {
/* last link */
dev->mld_idx_mask &= ~BIT_ULL(mvif->mld_group_idx);
dev->mld_remap_idx_mask &= ~BIT_ULL(mvif->mld_remap_idx);
}
spin_lock_bh(&dev->mt76.sta_poll_lock);
if (!list_empty(&msta_link->wcid.poll_list))
@@ -2228,7 +2215,42 @@ mt7996_change_vif_links(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
u16 old_links, u16 new_links,
struct ieee80211_bss_conf *old[IEEE80211_MLD_MAX_NUM_LINKS])
{
return 0;
struct mt7996_dev *dev = mt7996_hw_dev(hw);
struct mt7996_vif *mvif = (struct mt7996_vif *)vif->drv_priv;
int ret = 0;
mutex_lock(&dev->mt76.mutex);
if (!old_links) {
int idx;
idx = get_own_mld_idx(dev->mld_idx_mask, true);
if (idx < 0) {
ret = -ENOSPC;
goto out;
}
mvif->mld_group_idx = idx;
dev->mld_idx_mask |= BIT_ULL(mvif->mld_group_idx);
idx = get_free_idx(dev->mld_remap_idx_mask, 0, 15) - 1;
if (idx < 0) {
ret = -ENOSPC;
goto out;
}
mvif->mld_remap_idx = idx;
dev->mld_remap_idx_mask |= BIT_ULL(mvif->mld_remap_idx);
}
if (new_links)
goto out;
dev->mld_idx_mask &= ~BIT_ULL(mvif->mld_group_idx);
dev->mld_remap_idx_mask &= ~BIT_ULL(mvif->mld_remap_idx);
out:
mutex_unlock(&dev->mt76.mutex);
return ret;
}
static void