netdev - Re: [net-next v2 2/2] bonding: cleanup bond

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Date:   Wed, 08 Jun 2022 11:51:22 -0700
From:   Jay Vosburgh <jay.vosburgh@...onical.com>
To:     Jonathan Toppins <jtoppins@...hat.com>
cc:     netdev@...r.kernel.org, Veaceslav Falico <vfalico@...il.com>,
        Andy Gospodarek <andy@...yhouse.net>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>, linux-kernel@...r.kernel.org
Subject: Re: [net-next v2 2/2] bonding: cleanup bond_create

Jonathan Toppins <jtoppins@...hat.com> wrote:

>Setting RLB_NULL_INDEX is not needed as this is done in bond_alb_initialize
>which is called by bond_open.
>
>Also reduce the number of rtnl_unlock calls by just using the standard
>goto cleanup path.
>
>Signed-off-by: Jonathan Toppins <jtoppins@...hat.com>

Acked-by: Jay Vosburgh <jay.vosburgh@...onical.com>


>---
> drivers/net/bonding/bond_main.c | 24 ++++++------------------
> 1 file changed, 6 insertions(+), 18 deletions(-)
>
>diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
>index f85372adf042..3d427183ec8e 100644
>--- a/drivers/net/bonding/bond_main.c
>+++ b/drivers/net/bonding/bond_main.c
>@@ -6218,45 +6218,33 @@ int bond_create(struct net *net, const char *name)
> {
> 	struct net_device *bond_dev;
> 	struct bonding *bond;
>-	struct alb_bond_info *bond_info;
>-	int res;
>+	int res = -ENOMEM;
> 
> 	rtnl_lock();
> 
> 	bond_dev = alloc_netdev_mq(sizeof(struct bonding),
> 				   name ? name : "bond%d", NET_NAME_UNKNOWN,
> 				   bond_setup, tx_queues);
>-	if (!bond_dev) {
>-		pr_err("%s: eek! can't alloc netdev!\n", name);
>-		rtnl_unlock();
>-		return -ENOMEM;
>-	}
>+	if (!bond_dev)
>+		goto out;
> 
>-	/*
>-	 * Initialize rx_hashtbl_used_head to RLB_NULL_INDEX.
>-	 * It is set to 0 by default which is wrong.
>-	 */
> 	bond = netdev_priv(bond_dev);
>-	bond_info = &(BOND_ALB_INFO(bond));
>-	bond_info->rx_hashtbl_used_head = RLB_NULL_INDEX;
>-
> 	dev_net_set(bond_dev, net);
> 	bond_dev->rtnl_link_ops = &bond_link_ops;
> 
> 	res = register_netdevice(bond_dev);
> 	if (res < 0) {
> 		free_netdev(bond_dev);
>-		rtnl_unlock();
>-
>-		return res;
>+		goto out;
> 	}
> 
> 	netif_carrier_off(bond_dev);
> 
> 	bond_work_init_all(bond);
> 
>+out:
> 	rtnl_unlock();
>-	return 0;
>+	return res;
> }
> 
> static int __net_init bond_net_init(struct net *net)
>-- 
>2.27.0
>