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Subject[PATCH 4.19 150/245] net: openvswitch: use u64 for meter bucket
Date
From: Tonghao Zhang <xiangxia.m.yue@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 <pshelar@ovn.org>
Cc: Andy Zhou <azhou@ovn.org>
Signed-off-by: Tonghao Zhang <xiangxia.m.yue@gmail.com>
Acked-by: Pravin B Shelar <pshelar@ovn.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@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 c038e021a5916..6f5131d1074b0 100644
--- a/net/openvswitch/meter.c
+++ b/net/openvswitch/meter.c
@@ -255,7 +255,7 @@ 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 964ace2650f89..970557ed5b5b6 100644
--- a/net/openvswitch/meter.h
+++ b/net/openvswitch/meter.h
@@ -26,7 +26,7 @@ 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


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