linux-kernel - [PATCH net-next v1 17/21] netdevsim: Move devlink registration to be last devlink command

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Date:   Sat, 25 Sep 2021 14:22:57 +0300
From:   Leon Romanovsky <leon@...nel.org>
To:     "David S . Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>
Cc:     Leon Romanovsky <leonro@...dia.com>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Andrew Lunn <andrew@...n.ch>, Ariel Elior <aelior@...vell.com>,
        Bin Luo <luobin9@...wei.com>,
        Claudiu Manoil <claudiu.manoil@....com>,
        Coiby Xu <coiby.xu@...il.com>,
        Derek Chickles <dchickles@...vell.com>, drivers@...sando.io,
        Felix Manlunas <fmanlunas@...vell.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Geetha sowjanya <gakula@...vell.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        GR-everest-linux-l2@...vell.com, GR-Linux-NIC-Dev@...vell.com,
        hariprasad <hkelam@...vell.com>,
        Ido Schimmel <idosch@...dia.com>,
        Intel Corporation <linuxwwan@...el.com>,
        intel-wired-lan@...ts.osuosl.org,
        Ioana Ciornei <ioana.ciornei@....com>,
        Jerin Jacob <jerinj@...vell.com>,
        Jesse Brandeburg <jesse.brandeburg@...el.com>,
        Jiri Pirko <jiri@...dia.com>,
        Jonathan Lemon <jonathan.lemon@...il.com>,
        Linu Cherian <lcherian@...vell.com>,
        linux-kernel@...r.kernel.org, linux-omap@...r.kernel.org,
        linux-rdma@...r.kernel.org, linux-staging@...ts.linux.dev,
        Loic Poulain <loic.poulain@...aro.org>,
        Manish Chopra <manishc@...vell.com>,
        M Chetan Kumar <m.chetan.kumar@...el.com>,
        Michael Chan <michael.chan@...adcom.com>,
        Michael Guralnik <michaelgur@...lanox.com>,
        netdev@...r.kernel.org, oss-drivers@...igine.com,
        Richard Cochran <richardcochran@...il.com>,
        Saeed Mahameed <saeedm@...dia.com>,
        Satanand Burla <sburla@...vell.com>,
        Sergey Ryazanov <ryazanov.s.a@...il.com>,
        Shannon Nelson <snelson@...sando.io>,
        Simon Horman <simon.horman@...igine.com>,
        Subbaraya Sundeep <sbhatta@...vell.com>,
        Sunil Goutham <sgoutham@...vell.com>,
        Taras Chornyi <tchornyi@...vell.com>,
        Tariq Toukan <tariqt@...dia.com>,
        Tony Nguyen <anthony.l.nguyen@...el.com>,
        UNGLinuxDriver@...rochip.com, Vadym Kochan <vkochan@...vell.com>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Vladimir Oltean <vladimir.oltean@....com>
Subject: [PATCH net-next v1 17/21] netdevsim: Move devlink registration to be last devlink command

From: Leon Romanovsky <leonro@...dia.com>

This change prevents from users to access device before devlink is
fully configured.

Signed-off-by: Leon Romanovsky <leonro@...dia.com>
---
 drivers/net/netdevsim/dev.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/drivers/net/netdevsim/dev.c b/drivers/net/netdevsim/dev.c
index b2214bc9efe2..cb6645012a30 100644
--- a/drivers/net/netdevsim/dev.c
+++ b/drivers/net/netdevsim/dev.c
@@ -1470,7 +1470,6 @@ int nsim_dev_probe(struct nsim_bus_dev *nsim_bus_dev)
 	if (err)
 		goto err_devlink_free;
 
-	devlink_register(devlink);
 	err = devlink_params_register(devlink, nsim_devlink_params,
 				      ARRAY_SIZE(nsim_devlink_params));
 	if (err)
@@ -1511,9 +1510,9 @@ int nsim_dev_probe(struct nsim_bus_dev *nsim_bus_dev)
 	if (err)
 		goto err_psample_exit;
 
-	devlink_params_publish(devlink);
-	devlink_reload_enable(devlink);
 	nsim_dev->esw_mode = DEVLINK_ESWITCH_MODE_LEGACY;
+	devlink_register(devlink);
+	devlink_reload_enable(devlink);
 	return 0;
 
 err_psample_exit:
@@ -1534,7 +1533,6 @@ int nsim_dev_probe(struct nsim_bus_dev *nsim_bus_dev)
 	devlink_params_unregister(devlink, nsim_devlink_params,
 				  ARRAY_SIZE(nsim_devlink_params));
 err_dl_unregister:
-	devlink_unregister(devlink);
 	devlink_resources_unregister(devlink, NULL);
 err_devlink_free:
 	devlink_free(devlink);
@@ -1569,6 +1567,7 @@ void nsim_dev_remove(struct nsim_bus_dev *nsim_bus_dev)
 	struct devlink *devlink = priv_to_devlink(nsim_dev);
 
 	devlink_reload_disable(devlink);
+	devlink_unregister(devlink);
 
 	nsim_dev_reload_destroy(nsim_dev);
 
@@ -1576,7 +1575,6 @@ void nsim_dev_remove(struct nsim_bus_dev *nsim_bus_dev)
 	nsim_dev_debugfs_exit(nsim_dev);
 	devlink_params_unregister(devlink, nsim_devlink_params,
 				  ARRAY_SIZE(nsim_devlink_params));
-	devlink_unregister(devlink);
 	devlink_resources_unregister(devlink, NULL);
 	devlink_free(devlink);
 }
-- 
2.31.1