[PATCH net 03/10] batman-adv: tpmeter: fix u32 truncation of reported bytes

[Simon Wunderlich <sw@simonwunderlich.de>]

From: Sven Eckelmann <sven@narfation.org>

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")
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
---
 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 022eb13e8ec47..56feb02d2b7ef 100644
--- a/net/batman-adv/tp_meter.c
+++ b/net/batman-adv/tp_meter.c
@@ -221,7 +221,7 @@ static void batadv_tp_batctl_notify(enum batadv_tp_meter_reason reason,
 				    unsigned long start_time, u64 total_sent,
 				    u32 cookie)
 {
-	u32 total_bytes;
+	u64 total_bytes;
 	u32 test_time;
 	u8 result;
 
-- 
2.47.3