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wifi: mt76: mt7996: Implement MLD address translation for EAPOL

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Do the MLD to link address translation for EAPOL frames in driver.

Signed-off-by: Shayne Chen <[email protected]>
Co-developed-by: Lorenzo Bianconi <[email protected]>
Signed-off-by: Lorenzo Bianconi <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Felix Fietkau <[email protected]>
This commit is contained in:
Shayne Chen
2025-09-04 15:01:06 +02:00
committed by Felix Fietkau
parent 7cf18f8ebb
commit 16090cb27d
1 changed files with 31 additions and 1 deletions
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mt7996/mac.c
+31 -1
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@@ -966,7 +966,8 @@ void mt7996_mac_write_txwi(struct mt7996_dev *dev, __le32 *txwi,
txwi[5] = cpu_to_le32(val);
val = MT_TXD6_DAS;
if (q_idx >= MT_LMAC_ALTX0 && q_idx <= MT_LMAC_BCN0)
if ((q_idx >= MT_LMAC_ALTX0 && q_idx <= MT_LMAC_BCN0) ||
skb->protocol == cpu_to_be16(ETH_P_PAE))
val |= MT_TXD6_DIS_MAT;
if (is_mt7996(&dev->mt76))
@@ -1053,6 +1054,35 @@ int mt7996_tx_prepare_skb(struct mt76_dev *mdev, void *txwi_ptr,
if (id < 0)
return id;
/* Since the rules of HW MLD address translation are not fully
* compatible with 802.11 EAPOL frame, we do the translation by
* software
*/
if (tx_info->skb->protocol == cpu_to_be16(ETH_P_PAE) && sta->mlo) {
struct ieee80211_hdr *hdr = (void *)tx_info->skb->data;
struct ieee80211_bss_conf *link_conf;
struct ieee80211_link_sta *link_sta;
link_conf = rcu_dereference(vif->link_conf[wcid->link_id]);
if (!link_conf)
return -EINVAL;
link_sta = rcu_dereference(sta->link[wcid->link_id]);
if (!link_sta)
return -EINVAL;
memcpy(hdr->addr1, link_sta->addr, ETH_ALEN);
memcpy(hdr->addr2, link_conf->addr, ETH_ALEN);
if (ieee80211_has_a4(hdr->frame_control)) {
memcpy(hdr->addr3, sta->addr, ETH_ALEN);
memcpy(hdr->addr4, vif->addr, ETH_ALEN);
} else if (ieee80211_has_tods(hdr->frame_control)) {
memcpy(hdr->addr3, sta->addr, ETH_ALEN);
} else if (ieee80211_has_fromds(hdr->frame_control)) {
memcpy(hdr->addr3, vif->addr, ETH_ALEN);
}
}
pid = mt76_tx_status_skb_add(mdev, wcid, tx_info->skb);
memset(txwi_ptr, 0, MT_TXD_SIZE);
/* Transmit non qos data by 802.11 header and need to fill txd by host*/