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Date: Mon, 2 Nov 2020 05:07:59 +0000
From: Parav Pandit <parav@...dia.com>
To: Leon Romanovsky <leon@...nel.org>,
Doug Ledford <dledford@...hat.com>,
Jason Gunthorpe <jgg@...dia.com>,
gregkh <gregkh@...uxfoundation.org>
CC: Leon Romanovsky <leonro@...dia.com>,
Jakub Kicinski <kuba@...nel.org>,
Jason Wang <jasowang@...hat.com>,
"linux-rdma@...r.kernel.org" <linux-rdma@...r.kernel.org>,
"Michael S. Tsirkin" <mst@...hat.com>,
"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
Roi Dayan <roid@...dia.com>,
Saeed Mahameed <saeedm@...dia.com>,
"virtualization@...ts.linux-foundation.org"
<virtualization@...ts.linux-foundation.org>,
"alsa-devel@...a-project.org" <alsa-devel@...a-project.org>,
"tiwai@...e.de" <tiwai@...e.de>,
"broonie@...nel.org" <broonie@...nel.org>,
"David S . Miller" <davem@...emloft.net>,
"ranjani.sridharan@...ux.intel.com"
<ranjani.sridharan@...ux.intel.com>,
"pierre-louis.bossart@...ux.intel.com"
<pierre-louis.bossart@...ux.intel.com>,
"fred.oh@...ux.intel.com" <fred.oh@...ux.intel.com>,
"shiraz.saleem@...el.com" <shiraz.saleem@...el.com>,
"dan.j.williams@...el.com" <dan.j.williams@...el.com>,
"kiran.patil@...el.com" <kiran.patil@...el.com>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH mlx5-next v1 03/11] net/mlx5_core: Clean driver version
and name
> From: Leon Romanovsky <leon@...nel.org>
> Sent: Monday, November 2, 2020 1:46 AM
>
> From: Leon Romanovsky <leonro@...dia.com>
>
> Remove exposed driver version as it was done in other drivers, so module
> version will work correctly by displaying the kernel version for which it is
> compiled.
>
> And move mlx5_core module name to general include, so auxiliary drivers
> will be able to use it as a basis for a name in their device ID tables.
>
> Signed-off-by: Leon Romanovsky <leonro@...dia.com>
> ---
> drivers/net/ethernet/mellanox/mlx5/core/devlink.c | 2 +-
> drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c | 4 +---
> drivers/net/ethernet/mellanox/mlx5/core/en_rep.c | 1 -
> .../net/ethernet/mellanox/mlx5/core/ipoib/ethtool.c | 2 +-
> drivers/net/ethernet/mellanox/mlx5/core/main.c | 11 +++++++----
> drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h | 3 ---
> include/linux/mlx5/driver.h | 2 ++
> 7 files changed, 12 insertions(+), 13 deletions(-)
>
> diff --git a/drivers/net/ethernet/mellanox/mlx5/core/devlink.c
> b/drivers/net/ethernet/mellanox/mlx5/core/devlink.c
> index a28f95df2901..1a351e2f6ace 100644
> --- a/drivers/net/ethernet/mellanox/mlx5/core/devlink.c
> +++ b/drivers/net/ethernet/mellanox/mlx5/core/devlink.c
> @@ -52,7 +52,7 @@ mlx5_devlink_info_get(struct devlink *devlink, struct
> devlink_info_req *req,
> u32 running_fw, stored_fw;
> int err;
>
> - err = devlink_info_driver_name_put(req, DRIVER_NAME);
> + err = devlink_info_driver_name_put(req, KBUILD_MODNAME);
> if (err)
> return err;
>
> diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
> b/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
> index d25a56ec6876..bcff18a87bcd 100644
> --- a/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
> +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_ethtool.c
> @@ -40,9 +40,7 @@ void mlx5e_ethtool_get_drvinfo(struct mlx5e_priv
> *priv, {
> struct mlx5_core_dev *mdev = priv->mdev;
>
> - strlcpy(drvinfo->driver, DRIVER_NAME, sizeof(drvinfo->driver));
> - strlcpy(drvinfo->version, DRIVER_VERSION,
> - sizeof(drvinfo->version));
> + strlcpy(drvinfo->driver, KBUILD_MODNAME, sizeof(drvinfo-
> >driver));
> snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version),
> "%d.%d.%04d (%.16s)",
> fw_rev_maj(mdev), fw_rev_min(mdev),
> fw_rev_sub(mdev), diff --git
> a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
> b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
> index 67247c33b9fd..ef2f8889ba0f 100644
> --- a/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
> +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_rep.c
> @@ -64,7 +64,6 @@ static void mlx5e_rep_get_drvinfo(struct net_device
> *dev,
>
> strlcpy(drvinfo->driver, mlx5e_rep_driver_name,
> sizeof(drvinfo->driver));
> - strlcpy(drvinfo->version, UTS_RELEASE, sizeof(drvinfo->version));
> snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version),
> "%d.%d.%04d (%.16s)",
> fw_rev_maj(mdev), fw_rev_min(mdev),
> diff --git a/drivers/net/ethernet/mellanox/mlx5/core/ipoib/ethtool.c
> b/drivers/net/ethernet/mellanox/mlx5/core/ipoib/ethtool.c
> index cac8f085b16d..97d96fc38a65 100644
> --- a/drivers/net/ethernet/mellanox/mlx5/core/ipoib/ethtool.c
> +++ b/drivers/net/ethernet/mellanox/mlx5/core/ipoib/ethtool.c
> @@ -39,7 +39,7 @@ static void mlx5i_get_drvinfo(struct net_device *dev,
> struct mlx5e_priv *priv = mlx5i_epriv(dev);
>
> mlx5e_ethtool_get_drvinfo(priv, drvinfo);
> - strlcpy(drvinfo->driver, DRIVER_NAME "[ib_ipoib]",
> + strlcpy(drvinfo->driver, KBUILD_MODNAME "[ib_ipoib]",
> sizeof(drvinfo->driver));
> }
>
> diff --git a/drivers/net/ethernet/mellanox/mlx5/core/main.c
> b/drivers/net/ethernet/mellanox/mlx5/core/main.c
> index 71e210f22f69..9827127cb674 100644
> --- a/drivers/net/ethernet/mellanox/mlx5/core/main.c
> +++ b/drivers/net/ethernet/mellanox/mlx5/core/main.c
> @@ -77,7 +77,6 @@
> MODULE_AUTHOR("Eli Cohen <eli@...lanox.com>");
> MODULE_DESCRIPTION("Mellanox 5th generation network adapters
> (ConnectX series) core driver"); MODULE_LICENSE("Dual BSD/GPL"); -
> MODULE_VERSION(DRIVER_VERSION);
>
> unsigned int mlx5_core_debug_mask;
> module_param_named(debug_mask, mlx5_core_debug_mask, uint, 0644);
> @@ -228,7 +227,7 @@ static void mlx5_set_driver_version(struct
> mlx5_core_dev *dev)
> strncat(string, ",", remaining_size);
>
> remaining_size = max_t(int, 0, driver_ver_sz - strlen(string));
> - strncat(string, DRIVER_NAME, remaining_size);
> + strncat(string, KBUILD_MODNAME, remaining_size);
>
> remaining_size = max_t(int, 0, driver_ver_sz - strlen(string));
> strncat(string, ",", remaining_size);
> @@ -313,7 +312,7 @@ static int request_bar(struct pci_dev *pdev)
> return -ENODEV;
> }
>
> - err = pci_request_regions(pdev, DRIVER_NAME);
> + err = pci_request_regions(pdev, KBUILD_MODNAME);
> if (err)
> dev_err(&pdev->dev, "Couldn't get PCI resources,
> aborting\n");
>
> @@ -1617,7 +1616,7 @@ void mlx5_recover_device(struct mlx5_core_dev
> *dev) }
>
> static struct pci_driver mlx5_core_driver = {
> - .name = DRIVER_NAME,
> + .name = KBUILD_MODNAME,
> .id_table = mlx5_core_pci_table,
> .probe = init_one,
> .remove = remove_one,
> @@ -1643,6 +1642,10 @@ static int __init init(void) {
> int err;
>
> + WARN_ONCE(strcmp(MLX5_ADEV_NAME, KBUILD_MODNAME) ||
> + strlen(MLX5_ADEV_NAME) != strlen(KBUILD_MODNAME),
> + "mlx5_core name not in sync with kernel module name");
> +
In which case, both the strings are same but their length not?
You likely don't need the string length check.
> get_random_bytes(&sw_owner_id, sizeof(sw_owner_id));
>
> mlx5_core_verify_params();
> diff --git a/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h
> b/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h
> index 8cec85ab419d..b285f1515e4e 100644
> --- a/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h
> +++ b/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h
> @@ -42,9 +42,6 @@
> #include <linux/mlx5/fs.h>
> #include <linux/mlx5/driver.h>
>
> -#define DRIVER_NAME "mlx5_core"
> -#define DRIVER_VERSION "5.0-0"
> -
> extern uint mlx5_core_debug_mask;
>
> #define mlx5_core_dbg(__dev, format, ...) \
> diff --git a/include/linux/mlx5/driver.h b/include/linux/mlx5/driver.h index
> 317257f8e0ad..ed1d030658d2 100644
> --- a/include/linux/mlx5/driver.h
> +++ b/include/linux/mlx5/driver.h
> @@ -56,6 +56,8 @@
> #include <linux/ptp_clock_kernel.h>
> #include <net/devlink.h>
>
> +#define MLX5_ADEV_NAME "mlx5_core"
> +
> enum {
> MLX5_BOARD_ID_LEN = 64,
> };
> --
> 2.28.0
Other than strlen removal check,
Reviewed-by: Parav Pandit <parav@...dia.com>
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