[PATCH net-next v2 1/3] net: move the netdev_ops checks into a helper
flat view
COOLING5d
IN LINUX-NEXT
From: Nicolai Buchwitz <nb@tipi-net.de>
Date: 2026-10-02 09:42:31
Also in:
lkml
Subsystem:
networking [general], the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Queued in linux-next as 57f66330c6bb on 2026-10-06.
register_netdevice() already does two ops sanity checks and is about to get a third. Collect them in netdev_check_ops(). The call stays after ndo_init() because drivers set features from there. Signed-off-by: Nicolai Buchwitz <nb@tipi-net.de> --- net/core/dev.c | 32 ++++++++++++++++++++------------ 1 file changed, 20 insertions(+), 12 deletions(-)
diff --git a/net/core/dev.c b/net/core/dev.c
index 5ac08da8b9d7..a44bcfc29d54 100644
--- a/net/core/dev.c
+++ b/net/core/dev.c@@ -11451,6 +11451,24 @@ static void netdev_free_phy_link_topology(struct net_device *dev) } } +static int netdev_check_ops(struct net_device *dev) +{ + const struct net_device_ops *ops = dev->netdev_ops; + + if (((dev->hw_features | dev->features) & + NETIF_F_HW_VLAN_CTAG_FILTER) && + (!ops->ndo_vlan_rx_add_vid || !ops->ndo_vlan_rx_kill_vid)) { + netdev_WARN(dev, "Buggy VLAN acceleration in driver!\n"); + return -EINVAL; + } + + if (netdev_need_ops_lock(dev) && ops->ndo_set_rx_mode && + !ops->ndo_set_rx_mode_async) + netdev_WARN(dev, "ops-locked drivers should use ndo_set_rx_mode_async\n"); + + return 0; +} + /** * register_netdevice() - register a network device * @dev: device to register
@@ -11506,19 +11524,9 @@ int register_netdevice(struct net_device *dev) } } - if (((dev->hw_features | dev->features) & - NETIF_F_HW_VLAN_CTAG_FILTER) && - (!dev->netdev_ops->ndo_vlan_rx_add_vid || - !dev->netdev_ops->ndo_vlan_rx_kill_vid)) { - netdev_WARN(dev, "Buggy VLAN acceleration in driver!\n"); - ret = -EINVAL; + ret = netdev_check_ops(dev); + if (ret) goto err_uninit; - } - - if (netdev_need_ops_lock(dev) && - dev->netdev_ops->ndo_set_rx_mode && - !dev->netdev_ops->ndo_set_rx_mode_async) - netdev_WARN(dev, "ops-locked drivers should use ndo_set_rx_mode_async\n"); ret = netdev_do_alloc_pcpu_stats(dev); if (ret)
base-commit: 071876fd50482a68603a9460d80dd6dd58827ee1 -- 2.53.0