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From: Saeed Mahameed <saeed@kernel.org>
To: "David S. Miller" <davem@davemloft.net>,
	Jakub Kicinski <kuba@kernel.org>
Cc: netdev@vger.kernel.org, Tariq Toukan <tariqt@nvidia.com>,
	Aya Levin <ayal@nvidia.com>, Saeed Mahameed <saeedm@nvidia.com>
Subject: [net 1/8] net/mlx5e: Fix incompatible casting
Date: Tue,  1 Jun 2021 18:37:16 -0700	[thread overview]
Message-ID: <20210602013723.1142650-2-saeed@kernel.org> (raw)
In-Reply-To: <20210602013723.1142650-1-saeed@kernel.org>

From: Aya Levin <ayal@nvidia.com>

Device supports setting of a single fec mode at a time, enforce this
by bitmap_weight == 1. Input from fec command is in u32, avoid cast to
unsigned long and use bitmap_from_arr32 to populate bitmap safely.

Fixes: 4bd9d5070b92 ("net/mlx5e: Enforce setting of a single FEC mode")
Signed-off-by: Aya Levin <ayal@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c b/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
index 8360289813f0..c4724742eef1 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
@@ -1624,12 +1624,13 @@ static int mlx5e_set_fecparam(struct net_device *netdev,
 {
 	struct mlx5e_priv *priv = netdev_priv(netdev);
 	struct mlx5_core_dev *mdev = priv->mdev;
+	unsigned long fec_bitmap;
 	u16 fec_policy = 0;
 	int mode;
 	int err;
 
-	if (bitmap_weight((unsigned long *)&fecparam->fec,
-			  ETHTOOL_FEC_LLRS_BIT + 1) > 1)
+	bitmap_from_arr32(&fec_bitmap, &fecparam->fec, sizeof(fecparam->fec) * BITS_PER_BYTE);
+	if (bitmap_weight(&fec_bitmap, ETHTOOL_FEC_LLRS_BIT + 1) > 1)
 		return -EOPNOTSUPP;
 
 	for (mode = 0; mode < ARRAY_SIZE(pplm_fec_2_ethtool); mode++) {
-- 
2.31.1


  reply	other threads:[~2021-06-02  1:37 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-02  1:37 [pull request][net 0/8] mlx5 fixes 2021-06-01 Saeed Mahameed
2021-06-02  1:37 ` Saeed Mahameed [this message]
2021-06-02 17:10   ` [net 1/8] net/mlx5e: Fix incompatible casting Jakub Kicinski
2021-06-02 20:30   ` patchwork-bot+netdevbpf
2021-06-03 21:02   ` David Laight
2021-06-02  1:37 ` [net 2/8] net/mlx5e: Disable TLS offload for uplink representor Saeed Mahameed
2021-06-02  1:37 ` [net 3/8] net/mlx5: Check firmware sync reset requested is set before trying to abort it Saeed Mahameed
2021-06-02  1:37 ` [net 4/8] net/mlx5e: Check for needed capability for cvlan matching Saeed Mahameed
2021-06-02  1:37 ` [net 5/8] net/mlx5e: Fix adding encap rules to slow path Saeed Mahameed
2021-06-02  1:37 ` [net 6/8] net/mlx5e: Fix HW TS with CQE compression according to profile Saeed Mahameed
2021-06-02  1:37 ` [net 7/8] net/mlx5e: Fix conflict with HW TS and CQE compression Saeed Mahameed
2021-06-02  1:37 ` [net 8/8] net/mlx5: DR, Create multi-destination flow table with level less than 64 Saeed Mahameed

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