netdev - Re: [PATCH net-next 1/2] net: bridge: switchdev: refactor br_switchdev_fdb

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Message-ID: <b541c88e-879e-ee9d-90d8-2cd37690f7e6@nvidia.com>
Date:   Wed, 14 Apr 2021 18:25:03 +0300
From:   Nikolay Aleksandrov <nikolay@...dia.com>
To:     Vladimir Oltean <olteanv@...il.com>,
        Jakub Kicinski <kuba@...nel.org>,
        "David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org
Cc:     Ioana Ciornei <ioana.ciornei@....com>,
        Vadym Kochan <vkochan@...vell.com>,
        Taras Chornyi <tchornyi@...vell.com>,
        Jiri Pirko <jiri@...dia.com>, Ido Schimmel <idosch@...dia.com>,
        Grygorii Strashko <grygorii.strashko@...com>,
        Ivan Vecera <ivecera@...hat.com>,
        Roopa Prabhu <roopa@...dia.com>, Andrew Lunn <andrew@...n.ch>,
        Vivien Didelot <vivien.didelot@...il.com>,
        Florian Fainelli <f.fainelli@...il.com>,
        Vignesh Raghavendra <vigneshr@...com>,
        Linus Walleij <linus.walleij@...aro.org>,
        linux-omap@...r.kernel.org,
        Tobias Waldekranz <tobias@...dekranz.com>,
        Vladimir Oltean <vladimir.oltean@....com>
Subject: Re: [PATCH net-next 1/2] net: bridge: switchdev: refactor
 br_switchdev_fdb_notify

On 14/04/2021 18:15, Vladimir Oltean wrote:
> From: Tobias Waldekranz <tobias@...dekranz.com>
> 
> Instead of having to add more and more arguments to
> br_switchdev_fdb_call_notifiers, get rid of it and build the info
> struct directly in br_switchdev_fdb_notify.
> 
> Signed-off-by: Tobias Waldekranz <tobias@...dekranz.com>
> Reviewed-by: Vladimir Oltean <vladimir.oltean@....com>
> Signed-off-by: Vladimir Oltean <vladimir.oltean@....com>
> ---
>  net/bridge/br_switchdev.c | 41 +++++++++++----------------------------
>  1 file changed, 11 insertions(+), 30 deletions(-)
> 

Hi,
Is there a PATCH 0/2 with overview and explanation of what's happening in this set ?
If there isn't one please add it and explain the motivation and the change.

Thanks,
 Nik

> diff --git a/net/bridge/br_switchdev.c b/net/bridge/br_switchdev.c
> index 1e24d9a2c9a7..c390f84adea2 100644
> --- a/net/bridge/br_switchdev.c
> +++ b/net/bridge/br_switchdev.c
> @@ -107,25 +107,16 @@ int br_switchdev_set_port_flag(struct net_bridge_port *p,
>  	return 0;
>  }
>  
> -static void
> -br_switchdev_fdb_call_notifiers(bool adding, const unsigned char *mac,
> -				u16 vid, struct net_device *dev,
> -				bool added_by_user, bool offloaded)
> -{
> -	struct switchdev_notifier_fdb_info info;
> -	unsigned long notifier_type;
> -
> -	info.addr = mac;
> -	info.vid = vid;
> -	info.added_by_user = added_by_user;
> -	info.offloaded = offloaded;
> -	notifier_type = adding ? SWITCHDEV_FDB_ADD_TO_DEVICE : SWITCHDEV_FDB_DEL_TO_DEVICE;
> -	call_switchdev_notifiers(notifier_type, dev, &info.info, NULL);
> -}
> -
>  void
>  br_switchdev_fdb_notify(const struct net_bridge_fdb_entry *fdb, int type)
>  {
> +	struct switchdev_notifier_fdb_info info = {
> +		.addr = fdb->key.addr.addr,
> +		.vid = fdb->key.vlan_id,
> +		.added_by_user = test_bit(BR_FDB_ADDED_BY_USER, &fdb->flags),
> +		.offloaded = test_bit(BR_FDB_OFFLOADED, &fdb->flags),
> +	};
> +
>  	if (!fdb->dst)
>  		return;
>  	if (test_bit(BR_FDB_LOCAL, &fdb->flags))
> @@ -133,22 +124,12 @@ br_switchdev_fdb_notify(const struct net_bridge_fdb_entry *fdb, int type)
>  
>  	switch (type) {
>  	case RTM_DELNEIGH:
> -		br_switchdev_fdb_call_notifiers(false, fdb->key.addr.addr,
> -						fdb->key.vlan_id,
> -						fdb->dst->dev,
> -						test_bit(BR_FDB_ADDED_BY_USER,
> -							 &fdb->flags),
> -						test_bit(BR_FDB_OFFLOADED,
> -							 &fdb->flags));
> +		call_switchdev_notifiers(SWITCHDEV_FDB_DEL_TO_DEVICE,
> +					 fdb->dst->dev, &info.info, NULL);
>  		break;
>  	case RTM_NEWNEIGH:
> -		br_switchdev_fdb_call_notifiers(true, fdb->key.addr.addr,
> -						fdb->key.vlan_id,
> -						fdb->dst->dev,
> -						test_bit(BR_FDB_ADDED_BY_USER,
> -							 &fdb->flags),
> -						test_bit(BR_FDB_OFFLOADED,
> -							 &fdb->flags));
> +		call_switchdev_notifiers(SWITCHDEV_FDB_ADD_TO_DEVICE,
> +					 fdb->dst->dev, &info.info, NULL);
>  		break;
>  	}
>  }
>