wifi: mt76: update beacon size limitation

To accommodate 11v MBSSID IE and support maximum 16 MBSSIDs, expand the
beacon size limitation for beacon and inband discovery commands.

Co-developed-by: Peter Chiu <chui-hao.chiu@mediatek.com>
Signed-off-by: Peter Chiu <chui-hao.chiu@mediatek.com>
Co-developed-by: Money Wang <money.wang@mediatek.com>
Signed-off-by: Money Wang <money.wang@mediatek.com>
Signed-off-by: MeiChia Chiu <meichia.chiu@mediatek.com>
Signed-off-by: Shayne Chen <shayne.chen@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

1 files changed, 29 insertions, 20 deletions

diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
index 50ae7bf3af91..5cf45c5ce5e1 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
@@ -1882,10 +1882,9 @@ mt7915_mcu_beacon_cont(struct mt7915_dev *dev, struct ieee80211_vif *vif,
 	memcpy(buf + MT_TXD_SIZE, skb->data, skb->len);
 }
 
-static void
-mt7915_mcu_beacon_inband_discov(struct mt7915_dev *dev, struct ieee80211_vif *vif,
-				struct sk_buff *rskb, struct bss_info_bcn *bcn,
-				u32 changed)
+int
+mt7915_mcu_add_inband_discov(struct mt7915_dev *dev, struct ieee80211_vif *vif,
+			     u32 changed)
 {
 #define OFFLOAD_TX_MODE_SU	BIT(0)
 #define OFFLOAD_TX_MODE_MU	BIT(1)
@@ -1895,14 +1894,27 @@ mt7915_mcu_beacon_inband_discov(struct mt7915_dev *dev, struct ieee80211_vif *vi
 	struct cfg80211_chan_def *chandef = &mvif->phy->mt76->chandef;
 	enum nl80211_band band = chandef->chan->band;
 	struct mt76_wcid *wcid = &dev->mt76.global_wcid;
+	struct bss_info_bcn *bcn;
 	struct bss_info_inband_discovery *discov;
 	struct ieee80211_tx_info *info;
-	struct sk_buff *skb = NULL;
-	struct tlv *tlv;
+	struct sk_buff *rskb, *skb = NULL;
+	struct tlv *tlv, *sub_tlv;
 	bool ext_phy = phy != &dev->phy;
 	u8 *buf, interval;
 	int len;
 
+	if (vif->bss_conf.nontransmitted)
+		return 0;
+
+	rskb = __mt76_connac_mcu_alloc_sta_req(&dev->mt76, &mvif->mt76, NULL,
+					       MT7915_MAX_BSS_OFFLOAD_SIZE);
+	if (IS_ERR(rskb))
+		return PTR_ERR(rskb);
+
+	tlv = mt76_connac_mcu_add_tlv(rskb, BSS_INFO_OFFLOAD, sizeof(*bcn));
+	bcn = (struct bss_info_bcn *)tlv;
+	bcn->enable = true;
+
 	if (changed & BSS_CHANGED_FILS_DISCOVERY &&
 	    vif->bss_conf.fils_discovery.max_interval) {
 		interval = vif->bss_conf.fils_discovery.max_interval;
@@ -1914,26 +1926,25 @@ mt7915_mcu_beacon_inband_discov(struct mt7915_dev *dev, struct ieee80211_vif *vi
 	}
 
 	if (!skb)
-		return;
+		return -EINVAL;
 
 	info = IEEE80211_SKB_CB(skb);
 	info->control.vif = vif;
 	info->band = band;
-
 	info->hw_queue |= FIELD_PREP(MT_TX_HW_QUEUE_PHY, ext_phy);
 
 	len = sizeof(*discov) + MT_TXD_SIZE + skb->len;
 	len = (len & 0x3) ? ((len | 0x3) + 1) : len;
 
-	if (len > (MT7915_MAX_BSS_OFFLOAD_SIZE - rskb->len)) {
+	if (skb->len > MT7915_MAX_BEACON_SIZE) {
 		dev_err(dev->mt76.dev, "inband discovery size limit exceed\n");
 		dev_kfree_skb(skb);
-		return;
+		return -EINVAL;
 	}
 
-	tlv = mt7915_mcu_add_nested_subtlv(rskb, BSS_INFO_BCN_DISCOV,
-					   len, &bcn->sub_ntlv, &bcn->len);
-	discov = (struct bss_info_inband_discovery *)tlv;
+	sub_tlv = mt7915_mcu_add_nested_subtlv(rskb, BSS_INFO_BCN_DISCOV,
+					       len, &bcn->sub_ntlv, &bcn->len);
+	discov = (struct bss_info_inband_discovery *)sub_tlv;
 	discov->tx_mode = OFFLOAD_TX_MODE_SU;
 	/* 0: UNSOL PROBE RESP, 1: FILS DISCOV */
 	discov->tx_type = !!(changed & BSS_CHANGED_FILS_DISCOVERY);
@@ -1941,13 +1952,16 @@ mt7915_mcu_beacon_inband_discov(struct mt7915_dev *dev, struct ieee80211_vif *vi
 	discov->prob_rsp_len = cpu_to_le16(MT_TXD_SIZE + skb->len);
 	discov->enable = true;
 
-	buf = (u8 *)tlv + sizeof(*discov);
+	buf = (u8 *)sub_tlv + sizeof(*discov);
 
 	mt7915_mac_write_txwi(&dev->mt76, (__le32 *)buf, skb, wcid, 0, NULL,
 			      0, changed);
 	memcpy(buf + MT_TXD_SIZE, skb->data, skb->len);
 
 	dev_kfree_skb(skb);
+
+	return mt76_mcu_skb_send_msg(&phy->dev->mt76, rskb,
+				     MCU_EXT_CMD(BSS_INFO_UPDATE), true);
 }
 
 int mt7915_mcu_add_beacon(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
@@ -1983,7 +1997,7 @@ int mt7915_mcu_add_beacon(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 	if (!skb)
 		return -EINVAL;
 
-	if (skb->len > MT7915_MAX_BEACON_SIZE - MT_TXD_SIZE) {
+	if (skb->len > MT7915_MAX_BEACON_SIZE) {
 		dev_err(dev->mt76.dev, "Bcn size limit exceed\n");
 		dev_kfree_skb(skb);
 		return -EINVAL;
@@ -1997,11 +2011,6 @@ int mt7915_mcu_add_beacon(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 	mt7915_mcu_beacon_cont(dev, vif, rskb, skb, bcn, &offs);
 	dev_kfree_skb(skb);
 
-	if (changed & BSS_CHANGED_UNSOL_BCAST_PROBE_RESP ||
-	    changed & BSS_CHANGED_FILS_DISCOVERY)
-		mt7915_mcu_beacon_inband_discov(dev, vif, rskb,
-						bcn, changed);
-
 out:
 	return mt76_mcu_skb_send_msg(&phy->dev->mt76, rskb,
 				     MCU_EXT_CMD(BSS_INFO_UPDATE), true);