linux-kernel - Re: [PATCH net-next v3 5/9] net: mscc: ocelot: Handle SWITCHDEV_PORT_ATTR

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Date:   Mon, 11 Feb 2019 13:29:26 +0100
From:   Jiri Pirko <jiri@...nulli.us>
To:     Florian Fainelli <f.fainelli@...il.com>
Cc:     netdev@...r.kernel.org, idosch@...lanox.com,
        linux-kernel@...r.kernel.org, devel@...verdev.osuosl.org,
        bridge@...ts.linux-foundation.org, jiri@...lanox.com,
        andrew@...n.ch, vivien.didelot@...il.com
Subject: Re: [PATCH net-next v3 5/9] net: mscc: ocelot: Handle
 SWITCHDEV_PORT_ATTR_GET/SET

Mon, Feb 11, 2019 at 12:40:03AM CET, f.fainelli@...il.com wrote:
>Following patches will change the way we communicate getting or setting
>a port's attribute and use a blocking notifier to perform those tasks.
>
>Prepare ocelot to support receiving notifier events targeting
>SWITCHDEV_PORT_ATTR_GET/SET and simply translate that into the existing
>ocelot_port_attr_{set,get} calls.
>
>Signed-off-by: Florian Fainelli <f.fainelli@...il.com>
>---
> drivers/net/ethernet/mscc/ocelot.c | 21 +++++++++++++++++++++
> 1 file changed, 21 insertions(+)
>
>diff --git a/drivers/net/ethernet/mscc/ocelot.c b/drivers/net/ethernet/mscc/ocelot.c
>index 195306d05bcd..850a49033a30 100644
>--- a/drivers/net/ethernet/mscc/ocelot.c
>+++ b/drivers/net/ethernet/mscc/ocelot.c
>@@ -1582,6 +1582,24 @@ struct notifier_block ocelot_netdevice_nb __read_mostly = {
> };
> EXPORT_SYMBOL(ocelot_netdevice_nb);
> 
>+static int
>+ocelot_switchdev_port_attr_event(unsigned long event,
>+		struct net_device *netdev,
>+		struct switchdev_notifier_port_attr_info *port_attr_info)
>+{
>+	int err = -EOPNOTSUPP;
>+
>+	switch (event) {
>+	case SWITCHDEV_PORT_ATTR_SET:
>+		err = ocelot_port_attr_set(netdev, port_attr_info->attr,
>+					   port_attr_info->trans);
>+		break;
>+	}
>+
>+	port_attr_info->handled = true;
>+	return notifier_from_errno(err);
>+}
>+
> static int ocelot_switchdev_blocking_event(struct notifier_block *unused,
> 					   unsigned long event, void *ptr)
> {
>@@ -1600,6 +1618,9 @@ static int ocelot_switchdev_blocking_event(struct notifier_block *unused,
> 						    ocelot_netdevice_dev_check,
> 						    ocelot_port_obj_del);
> 		return notifier_from_errno(err);
>+	case SWITCHDEV_PORT_ATTR_SET:
>+	case SWITCHDEV_PORT_ATTR_GET: /* fallthrough */

I think that the "fallthrough" comment should be for "ATTR_SET" case.

Anyway:
Acked-by: Jiri Pirko <jiri@...lanox.com>



>+		return ocelot_switchdev_port_attr_event(event, dev, ptr);
> 	}
> 
> 	return NOTIFY_DONE;
>-- 
>2.19.1
>