recipes-wifi/linux-mt76/files/patches-3.x/0003-wifi-mt76-mt7996-fix-pointer-calculation-in-ie-count.patch

From e505146b00960b7f04426f953e0b061d973354fd Mon Sep 17 00:00:00 2001
From: Peter Chiu <chui-hao.chiu@mediatek.com>
Date: Mon, 13 Feb 2023 14:48:10 +0800
Subject: [PATCH 03/29] wifi: mt76: mt7996: fix pointer calculation in ie
 countdown event

Fix the tail and data pointers. The rxd->len in mt7996_mcu_rxd does not
include the length of general rxd. It only includes the length of
firmware event rxd. Use the skb->length to get the correct length.

Signed-off-by: Peter Chiu <chui-hao.chiu@mediatek.com>
Signed-off-by: Shayne Chen <shayne.chen@mediatek.com>
Change-Id: I832194559e63e6b49b7ee00dc9c606b6106d8669
---
 mt7996/mcu.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/mt7996/mcu.c b/mt7996/mcu.c
index dbe1057..2e25572 100644
--- a/mt7996/mcu.c
+++ b/mt7996/mcu.c
@@ -422,7 +422,8 @@ mt7996_mcu_ie_countdown(struct mt7996_dev *dev, struct sk_buff *skb)
 	if (hdr->band && dev->mt76.phys[hdr->band])
 		mphy = dev->mt76.phys[hdr->band];
 
-	tail = skb->data + le16_to_cpu(rxd->len);
+	tail = skb->data + skb->len;
+	data += sizeof(struct header);
 	while (data + sizeof(struct tlv) < tail && le16_to_cpu(tlv->len)) {
 		switch (le16_to_cpu(tlv->tag)) {
 		case UNI_EVENT_IE_COUNTDOWN_CSA:
-- 
2.18.0