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Miller" , Jonathan Corbet , Shuah Khan , Simon Horman , Saeed Mahameed , Leon Romanovsky , Mark Bloch , "Borislav Petkov (AMD)" , Andrew Morton , Randy Dunlap , Thomas Gleixner , Petr Mladek , "Peter Zijlstra (Intel)" , Tejun Heo , Vlastimil Babka , Feng Tang , Christian Brauner , Dave Hansen , Dapeng Mi , Kees Cook , Marco Elver , Li RongQing , Eric Biggers , "Paul E. McKenney" , linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, netdev@vger.kernel.org, linux-rdma@vger.kernel.org, Gal Pressman , Dragos Tatulea , Jiri Pirko , Shay Drori , Moshe Shemesh Subject: Re: [PATCH net-next 3/3] net/mlx5: Apply devlink default eswitch mode during init Message-ID: References: <20260521072434.362624-1-tariqt@nvidia.com> <20260521072434.362624-4-tariqt@nvidia.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260521072434.362624-4-tariqt@nvidia.com> Thu, May 21, 2026 at 09:24:34AM +0200, tariqt@nvidia.com wrote: >From: Mark Bloch > >Apply devlink default eswitch mode for mlx5 devices after successful >device initialization while holding the devlink instance lock. > >At this point the devlink instance is registered and the mlx5 devlink >operations are available, so the default eswitch mode can be applied to >the matching PCI devlink handle. > >Signed-off-by: Mark Bloch >Reviewed-by: Shay Drori >Reviewed-by: Moshe Shemesh >Signed-off-by: Tariq Toukan >--- > drivers/net/ethernet/mellanox/mlx5/core/main.c | 17 +++++++++++++++++ > 1 file changed, 17 insertions(+) > >diff --git a/drivers/net/ethernet/mellanox/mlx5/core/main.c b/drivers/net/ethernet/mellanox/mlx5/core/main.c >index 0c6e4efe38c8..4528097f3d84 100644 >--- a/drivers/net/ethernet/mellanox/mlx5/core/main.c >+++ b/drivers/net/ethernet/mellanox/mlx5/core/main.c >@@ -1391,6 +1391,21 @@ static void mlx5_unload(struct mlx5_core_dev *dev) > mlx5_free_bfreg(dev, &dev->priv.bfreg); > } > >+static void mlx5_devl_apply_default_esw_mode(struct mlx5_core_dev *dev) >+{ >+ struct devlink *devlink = priv_to_devlink(dev); >+ int err; >+ >+ if (!MLX5_ESWITCH_MANAGER(dev)) >+ return; >+ >+ devl_assert_locked(devlink); >+ err = devl_apply_default_esw_mode(devlink); >+ if (err) >+ mlx5_core_warn(dev, "Couldn't apply default eswitch mode, err %d\n", >+ err); >+} >+ > int mlx5_init_one_devl_locked(struct mlx5_core_dev *dev) > { > bool light_probe = mlx5_dev_is_lightweight(dev); >@@ -1437,6 +1452,7 @@ int mlx5_init_one_devl_locked(struct mlx5_core_dev *dev) > mlx5_core_err(dev, "mlx5_hwmon_dev_register failed with error code %d\n", err); > > mutex_unlock(&dev->intf_state_mutex); >+ mlx5_devl_apply_default_esw_mode(dev); I wonder how we can make this work for all. I mean, other driver would silently ignore this command like arg, right? Any idea how to make all drivers follow the arg from very beginning? > return 0; > > err_register: >@@ -1538,6 +1554,7 @@ int mlx5_load_one_devl_locked(struct mlx5_core_dev *dev, bool recovery) > goto err_attach; > > mutex_unlock(&dev->intf_state_mutex); >+ mlx5_devl_apply_default_esw_mode(dev); > return 0; > > err_attach: >-- >2.44.0 >