From: Saeed Mahameed <saeed@kernel.org>
To: "David S. Miller" <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>
Cc: netdev@vger.kernel.org, Parav Pandit <parav@nvidia.com>,
Eli Cohen <elic@nvidia.com>, Saeed Mahameed <saeedm@nvidia.com>
Subject: [net 01/15] net/mlx5e: E-switch, Fix rate calculation for overflow
Date: Thu, 11 Feb 2021 18:56:27 -0800 [thread overview]
Message-ID: <20210212025641.323844-2-saeed@kernel.org> (raw)
In-Reply-To: <20210212025641.323844-1-saeed@kernel.org>
From: Parav Pandit <parav@nvidia.com>
rate_bytes_ps is a 64-bit field. It passed as 32-bit field to
apply_police_params(). Due to this when police rate is higher
than 4Gbps, 32-bit calculation ignores the carry. This results
in incorrect rate configurationn the device.
Fix it by performing 64-bit calculation.
Fixes: fcb64c0f5640 ("net/mlx5: E-Switch, add ingress rate support")
Signed-off-by: Parav Pandit <parav@nvidia.com>
Reviewed-by: Eli Cohen <elic@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
---
drivers/net/ethernet/mellanox/mlx5/core/en_tc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
index dd0bfbacad47..717fbaa6ce73 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
@@ -5040,7 +5040,7 @@ static int apply_police_params(struct mlx5e_priv *priv, u64 rate,
*/
if (rate) {
rate = (rate * BITS_PER_BYTE) + 500000;
- rate_mbps = max_t(u32, do_div(rate, 1000000), 1);
+ rate_mbps = max_t(u64, do_div(rate, 1000000), 1);
}
err = mlx5_esw_modify_vport_rate(esw, vport_num, rate_mbps);
--
2.29.2
next prev parent reply other threads:[~2021-02-12 2:58 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-12 2:56 [pull request][net 00/15] mlx5 fixes 2021-02-11 Saeed Mahameed
2021-02-12 2:56 ` Saeed Mahameed [this message]
2021-02-27 12:14 ` [net 01/15] net/mlx5e: E-switch, Fix rate calculation for overflow Arnd Bergmann
2021-03-02 0:52 ` Saeed Mahameed
2021-03-02 9:01 ` Arnd Bergmann
2021-02-12 2:56 ` [net 02/15] net/mlx5e: Enable striding RQ for Connect-X IPsec capable devices Saeed Mahameed
2021-02-12 2:56 ` [net 03/15] net/mlx5e: Enable XDP " Saeed Mahameed
2021-02-12 2:56 ` [net 04/15] net/mlx5e: Don't change interrupt moderation params when DIM is enabled Saeed Mahameed
2021-02-12 2:56 ` [net 05/15] net/mlx5e: Change interrupt moderation channel params also when channels are closed Saeed Mahameed
2021-02-12 2:56 ` [net 06/15] net/mlx5: Fix health error state handling Saeed Mahameed
2021-02-12 2:56 ` [net 07/15] net/mlx5e: Replace synchronize_rcu with synchronize_net Saeed Mahameed
2021-02-12 2:56 ` [net 08/15] net/mlx5e: Fix CQ params of ICOSQ and async ICOSQ Saeed Mahameed
2021-02-12 2:56 ` [net 09/15] net/mlx5e: kTLS, Use refcounts to free kTLS RX priv context Saeed Mahameed
2021-02-12 2:56 ` [net 10/15] net/mlx5: Disable devlink reload for multi port slave device Saeed Mahameed
2021-02-12 2:56 ` [net 11/15] net/mlx5: Disallow RoCE on " Saeed Mahameed
2021-02-12 2:56 ` [net 12/15] net/mlx5: Disallow RoCE on lag device Saeed Mahameed
2021-02-12 2:56 ` [net 13/15] net/mlx5: Disable devlink reload for lag devices Saeed Mahameed
2021-02-12 2:56 ` [net 14/15] net/mlx5e: CT: manage the lifetime of the ct entry object Saeed Mahameed
2021-02-12 2:56 ` [net 15/15] net/mlx5e: Check tunnel offload is required before setting SWP Saeed Mahameed
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