[PATCH 5.4 238/388] net: openvswitch: use u64 for meter bucket

[Greg Kroah-Hartman]

From: Tonghao Zhang <xiangxia.m....@gmail.com>

[ Upstream commit e57358873bb5d6caa882b9684f59140912b37dde ]

When setting the meter rate to 4+Gbps, there is an
overflow, the meters don't work as expected.

Cc: Pravin B Shelar <pshe...@ovn.org>
Cc: Andy Zhou <az...@ovn.org>
Signed-off-by: Tonghao Zhang <xiangxia.m....@gmail.com>
Acked-by: Pravin B Shelar <pshe...@ovn.org>
Signed-off-by: David S. Miller <da...@davemloft.net>
Signed-off-by: Sasha Levin <sas...@kernel.org>
---
 net/openvswitch/meter.c | 2 +-
 net/openvswitch/meter.h | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/net/openvswitch/meter.c b/net/openvswitch/meter.c
index 3323b79ff548d..b10734f18bbd6 100644
--- a/net/openvswitch/meter.c
+++ b/net/openvswitch/meter.c
@@ -251,7 +251,7 @@ static struct dp_meter *dp_meter_create(struct nlattr **a)
                 *
                 * Start with a full bucket.
                 */
-               band->bucket = (band->burst_size + band->rate) * 1000;
+               band->bucket = (band->burst_size + band->rate) * 1000ULL;
                band_max_delta_t = band->bucket / band->rate;
                if (band_max_delta_t > meter->max_delta_t)
                        meter->max_delta_t = band_max_delta_t;
diff --git a/net/openvswitch/meter.h b/net/openvswitch/meter.h
index f645913870bd2..2e3fd6f1d7ebe 100644
--- a/net/openvswitch/meter.h
+++ b/net/openvswitch/meter.h
@@ -23,7 +23,7 @@ struct dp_meter_band {
        u32 type;
        u32 rate;
        u32 burst_size;
-       u32 bucket; /* 1/1000 packets, or in bits */
+       u64 bucket; /* 1/1000 packets, or in bits */
        struct ovs_flow_stats stats;
 };
 
-- 
2.25.1