From 119c0b5721da9d97f95202c4ad1be2919dac64b0 Mon Sep 17 00:00:00 2001 From: Jiri Pirko Date: Wed, 3 Apr 2019 14:24:27 +0200 Subject: [PATCH] net: devlink: add warning for ndo_get_port_parent_id set when not needed Currently if the driver registers devlink port instance, he should set the devlink port attributes as well. Then the devlink core is able to obtain switch id itself, no need for driver to implement the ndo. Once all drivers will implement devlink port registration, this ndo should be removed. This warning guides new drivers to do things as they should be done. Signed-off-by: Jiri Pirko Signed-off-by: David S. Miller --- net/core/devlink.c | 18 ++++++++++++++++-- 1 file changed, 16 insertions(+), 2 deletions(-) diff --git a/net/core/devlink.c b/net/core/devlink.c index d9fbf94ea2a3..b2715a187a11 100644 --- a/net/core/devlink.c +++ b/net/core/devlink.c @@ -5358,24 +5358,38 @@ static void __devlink_port_type_set(struct devlink_port *devlink_port, void devlink_port_type_eth_set(struct devlink_port *devlink_port, struct net_device *netdev) { + const struct net_device_ops *ops = netdev->netdev_ops; + /* If driver registers devlink port, it should set devlink port * attributes accordingly so the compat functions are called * and the original ops are not used. */ - if (netdev->netdev_ops->ndo_get_phys_port_name) { + if (ops->ndo_get_phys_port_name) { /* Some drivers use the same set of ndos for netdevs * that have devlink_port registered and also for * those who don't. Make sure that ndo_get_phys_port_name * returns -EOPNOTSUPP here in case it is defined. * Warn if not. */ - const struct net_device_ops *ops = netdev->netdev_ops; char name[IFNAMSIZ]; int err; err = ops->ndo_get_phys_port_name(netdev, name, sizeof(name)); WARN_ON(err != -EOPNOTSUPP); } + if (ops->ndo_get_port_parent_id) { + /* Some drivers use the same set of ndos for netdevs + * that have devlink_port registered and also for + * those who don't. Make sure that ndo_get_port_parent_id + * returns -EOPNOTSUPP here in case it is defined. + * Warn if not. + */ + struct netdev_phys_item_id ppid; + int err; + + err = ops->ndo_get_port_parent_id(netdev, &ppid); + WARN_ON(err != -EOPNOTSUPP); + } __devlink_port_type_set(devlink_port, DEVLINK_PORT_TYPE_ETH, netdev); } EXPORT_SYMBOL_GPL(devlink_port_type_eth_set); -- 2.30.2