netdev - [net 04/14] net/mlx5: Disable eswitch before waiting for VF pages

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20230314174940.62221-5-saeed@kernel.org>
Date:   Tue, 14 Mar 2023 10:49:30 -0700
From:   Saeed Mahameed <saeed@...nel.org>
To:     "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Eric Dumazet <edumazet@...gle.com>
Cc:     Saeed Mahameed <saeedm@...dia.com>, netdev@...r.kernel.org,
        Tariq Toukan <tariqt@...dia.com>,
        Daniel Jurgens <danielj@...dia.com>
Subject: [net 04/14] net/mlx5: Disable eswitch before waiting for VF pages

From: Daniel Jurgens <danielj@...dia.com>

The offending commit changed the ordering of moving to legacy mode and
waiting for the VF pages. Moving to legacy mode is important in
bluefield, because it sends the host driver into error state, and frees
its pages. Without this transition we end up waiting 2 minutes for
pages that aren't coming before carrying on with the unload process.

Fixes: f019679ea5f2 ("net/mlx5: E-switch, Remove dependency between sriov and eswitch mode")

Signed-off-by: Daniel Jurgens <danielj@...dia.com>
Signed-off-by: Saeed Mahameed <saeedm@...dia.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/main.c b/drivers/net/ethernet/mellanox/mlx5/core/main.c
index 540840e80493..f36a3aa4b5c8 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/main.c
@@ -1364,8 +1364,8 @@ static void mlx5_unload(struct mlx5_core_dev *dev)
 {
 	mlx5_devlink_traps_unregister(priv_to_devlink(dev));
 	mlx5_sf_dev_table_destroy(dev);
-	mlx5_sriov_detach(dev);
 	mlx5_eswitch_disable(dev->priv.eswitch);
+	mlx5_sriov_detach(dev);
 	mlx5_lag_remove_mdev(dev);
 	mlx5_ec_cleanup(dev);
 	mlx5_sf_hw_table_destroy(dev);
-- 
2.39.2