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wifi: mt76: mt7996: ensure 4-byte alignment for beacon commands

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If TLV includes beacon content, its length might not be 4-byte aligned.
Make sure the length is aligned before sending beacon commands to FW.

Signed-off-by: Benjamin Lin <[email protected]>
Signed-off-by: Shayne Chen <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
This commit is contained in:
Benjamin Lin
2024-02-03 15:04:42 +01:00
committed by Felix Fietkau
parent d71716d93a
commit f21728f3f4
2 changed files with 7 additions and 11 deletions
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mt7996/mcu.c
+5 -9
View File
@@ -732,13 +732,10 @@ void mt7996_mcu_rx_event(struct mt7996_dev *dev, struct sk_buff *skb)
static struct tlv *
mt7996_mcu_add_uni_tlv(struct sk_buff *skb, u16 tag, u16 len)
{
struct tlv *ptlv, tlv = {
.tag = cpu_to_le16(tag),
.len = cpu_to_le16(len),
};
struct tlv *ptlv = skb_put(skb, len);
ptlv = skb_put(skb, len);
memcpy(ptlv, &tlv, sizeof(tlv));
ptlv->tag = cpu_to_le16(tag);
ptlv->len = cpu_to_le16(len);
return ptlv;
}
@@ -2522,7 +2519,7 @@ int mt7996_mcu_add_beacon(struct ieee80211_hw *hw,
info = IEEE80211_SKB_CB(skb);
info->hw_queue |= FIELD_PREP(MT_TX_HW_QUEUE_PHY, phy->mt76->band_idx);
len = sizeof(*bcn) + MT_TXD_SIZE + skb->len;
len = ALIGN(sizeof(*bcn) + MT_TXD_SIZE + skb->len, 4);
tlv = mt7996_mcu_add_uni_tlv(rskb, UNI_BSS_INFO_BCN_CONTENT, len);
bcn = (struct bss_bcn_content_tlv *)tlv;
bcn->enable = en;
@@ -2591,8 +2588,7 @@ int mt7996_mcu_beacon_inband_discov(struct mt7996_dev *dev,
info->band = band;
info->hw_queue |= FIELD_PREP(MT_TX_HW_QUEUE_PHY, phy->mt76->band_idx);
len = sizeof(*discov) + MT_TXD_SIZE + skb->len;
len = ALIGN(sizeof(*discov) + MT_TXD_SIZE + skb->len, 4);
tlv = mt7996_mcu_add_uni_tlv(rskb, UNI_BSS_INFO_OFFLOAD, len);
discov = (struct bss_inband_discovery_tlv *)tlv;
mt7996/mcu.h
+2 -2
View File
@@ -800,10 +800,10 @@ enum {
sizeof(struct sta_rec_hdr_trans) + \
sizeof(struct tlv))
#define MT7996_MAX_BEACON_SIZE 1342
#define MT7996_MAX_BEACON_SIZE 1338
#define MT7996_BEACON_UPDATE_SIZE (sizeof(struct bss_req_hdr) + \
sizeof(struct bss_bcn_content_tlv) + \
MT_TXD_SIZE + \
4 + MT_TXD_SIZE + \
sizeof(struct bss_bcn_cntdwn_tlv) + \
sizeof(struct bss_bcn_mbss_tlv))
#define MT7996_MAX_BSS_OFFLOAD_SIZE (MT7996_MAX_BEACON_SIZE + \