[PATCH 6.6.y] batman-adv: tpmeter: fix u32 truncation of reported bytes

[Sven Eckelmann <sven@narfation.org>]

commit 1025b76d13288a311e8259a0eefde0854fa63c41 upstream.

When more than 4 GB are transferred by the throughput meter,
batadv_tp_batctl_notify() will cut of the upper 32 bit of the u64 counter
and thus under-report the actual transferred bytes.

The data type of the temporary storage variable must therefore still
continue to use u64.

Cc: stable@vger.kernel.org
Reported-by: Sashiko <sashiko-bot@kernel.org>
Closes: https://sashiko.dev/#/bug/linux-08bb3be4-6c6a-452d-b4e4-606940c6cfa5
Fixes: 33a3bb4a3345 ("batman-adv: throughput meter implementation")
[ Context ]
Signed-off-by: Sven Eckelmann <sven@narfation.org>
---
 net/batman-adv/tp_meter.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/batman-adv/tp_meter.c b/net/batman-adv/tp_meter.c
index 50b83e0438a07..e28c4923f52f2 100644
--- a/net/batman-adv/tp_meter.c
+++ b/net/batman-adv/tp_meter.c
@@ -226,9 +226,9 @@ static void batadv_tp_batctl_notify(enum batadv_tp_meter_reason reason,
 				    unsigned long start_time, u64 total_sent,
 				    u32 cookie)
 {
+	u64 total_bytes;
 	u32 test_time;
 	u8 result;
-	u32 total_bytes;
 
 	if (!batadv_tp_is_error(reason)) {
 		result = BATADV_TP_REASON_COMPLETE;
-- 
2.47.3