From 45035febc49511d12e9687a83a3789767fe505e0 Mon Sep 17 00:00:00 2001 From: Vladimir Oltean Date: Wed, 21 Jul 2021 19:23:58 +0300 Subject: [PATCH] net: dpaa2-switch: refactor prechangeupper sanity checks Make more room for some extra code in the NETDEV_PRECHANGEUPPER handler by moving what already exists into a dedicated function. Cc: Ioana Ciornei Signed-off-by: Vladimir Oltean Reviewed-by: Florian Fainelli Acked-by: Ioana Ciornei Signed-off-by: David S. Miller --- .../ethernet/freescale/dpaa2/dpaa2-switch.c | 37 +++++++++++++------ 1 file changed, 26 insertions(+), 11 deletions(-) diff --git a/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c b/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c index 62d322ebf1f2..23798feb40b2 100644 --- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c +++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c @@ -2030,6 +2030,28 @@ static int dpaa2_switch_prevent_bridging_with_8021q_upper(struct net_device *net return 0; } +static int +dpaa2_switch_prechangeupper_sanity_checks(struct net_device *netdev, + struct net_device *upper_dev, + struct netlink_ext_ack *extack) +{ + int err; + + if (!br_vlan_enabled(upper_dev)) { + NL_SET_ERR_MSG_MOD(extack, "Cannot join a VLAN-unaware bridge"); + return -EOPNOTSUPP; + } + + err = dpaa2_switch_prevent_bridging_with_8021q_upper(netdev); + if (err) { + NL_SET_ERR_MSG_MOD(extack, + "Cannot join a bridge while VLAN uppers are present"); + return 0; + } + + return 0; +} + static int dpaa2_switch_port_netdevice_event(struct notifier_block *nb, unsigned long event, void *ptr) { @@ -2050,18 +2072,11 @@ static int dpaa2_switch_port_netdevice_event(struct notifier_block *nb, if (!netif_is_bridge_master(upper_dev)) break; - if (!br_vlan_enabled(upper_dev)) { - NL_SET_ERR_MSG_MOD(extack, "Cannot join a VLAN-unaware bridge"); - err = -EOPNOTSUPP; - goto out; - } - - err = dpaa2_switch_prevent_bridging_with_8021q_upper(netdev); - if (err) { - NL_SET_ERR_MSG_MOD(extack, - "Cannot join a bridge while VLAN uppers are present"); + err = dpaa2_switch_prechangeupper_sanity_checks(netdev, + upper_dev, + extack); + if (err) goto out; - } break; case NETDEV_CHANGEUPPER: -- 2.34.1