netdev_change_features(9)

✨ netdev_change_features(9) ✨

okay bestie, this little icon is from the Kernel API Manual, and it's here to explain a feature recalculation glow-up 🫶

🌸 NAME 🌸

netdev_change_features — recalculate device features

💅 SYNOPSIS 💅

void netdev_change_features (struct net_device *dev );

🎀 ARGUMENTS 🎀

• dev — the device to check 👀

✨ DESCRIPTION ✨

Recalculate dev->features set and send notifications even if they have not changed. Yes, fr fr — even then. 💖

Should be called instead of netdev_update_features if also dev->vlan_features might have changed, so the changes can be propagated to stacked VLAN devices. That's the important bestie note 🎀

🦋 SEE ALSO 🦋

Kernel file ./net/core/dev.c is the main character, and here's the whole squad — every single one, no skips:

• dev_add_pack(9)
• __dev_remove_pack(9)
• dev_remove_pack(9)
• dev_get_iflink(9)
• dev_fill_metadata_dst(9)
• netdev_napi_by_id_lock(9)
• __dev_get_by_name(9)
• dev_get_by_name_rcu(9)
• netdev_get_by_name(9)
• __dev_get_by_index(9)
• dev_get_by_index_rcu(9)
• netdev_get_by_index(9)
• dev_get_by_napi_id(9)
• netdev_get_by_index_lock(9)
• netdev_get_name(9)
• dev_getbyhwaddr_rcu(9)
• dev_getbyhwaddr(9)
• netdev_get_by_flags_rcu(9)
• dev_valid_name(9)
• __dev_alloc_name(9)
• dev_alloc_name(9)
• dev_get_alias(9)
• netdev_features_change(9)
• __netdev_notify_peers(9)
• netdev_notify_peers(9)
• dev_disable_gro_hw(9)
• register_netdevice_notifier(9)
• unregister_netdevice_notifier(9)
• register_netdevice_notifier_net(9)
• unregister_netdevice_notifier_net(9)
• call_netdevice_notifiers_info(9)
• call_netdevice_notifiers_info_robust(9)
• call_netdevice_notifiers(9)
• call_netdevice_notifiers_mtu(9)
• dev_forward_skb(9)
• dev_nit_active_rcu(9)
• netif_setup_tc(9)
• netif_set_real_num_rx_queues(9)
• netif_set_real_num_queues(9)
• netif_set_tso_max_size(9)
• netif_set_tso_max_segs(9)
• netif_inherit_tso_max(9)
• netif_get_num_default_rss_queues(9)
• netif_device_detach(9)
• netif_device_attach(9)
• dev_loopback_xmit(9)
• __dev_queue_xmit(9)
• rps_flow_is_active(9)
• rps_may_expire_flow(9)
• __netif_rx(9)
• netif_rx(9)
• netdev_is_rx_handler_busy(9)
• netdev_rx_handler_register(9)
• netdev_rx_handler_unregister(9)
• netif_receive_skb_core(9)
• netif_receive_skb(9)
• netif_receive_skb_list(9)
• __napi_schedule(9)
• napi_schedule_prep(9)
• __napi_schedule_irqoff(9)
• netif_threaded_enable(9)
• netif_queue_set_napi(9)
• napi_disable(9)
• napi_enable(9)
• netdev_has_upper_dev(9)
• netdev_has_upper_dev_all_rcu(9)
• netdev_has_any_upper_dev(9)
• netdev_master_upper_dev_get(9)
• netdev_has_any_lower_dev(9)
• netdev_upper_get_next_dev_rcu(9)
• netdev_lower_get_next_private(9)
• netdev_lower_get_next_private_rcu(9)
• netdev_lower_get_next(9)
• netdev_lower_get_first_private_rcu(9)
• netdev_master_upper_dev_get_rcu(9)
• netdev_upper_dev_link(9)
• netdev_master_upper_dev_link(9)
• netdev_upper_dev_unlink(9)
• netdev_bonding_info_change(9)
• netdev_get_xmit_slave(9)
• netdev_sk_get_lowest_dev(9)
• netdev_lower_state_changed(9)
• netif_get_flags(9)
• netif_set_mtu_ext(9)
• netif_pre_changeaddr_notify(9)
• dev_get_phys_port_id(9)
• dev_get_phys_port_name(9)
• netif_get_port_parent_id(9)
• netdev_port_same_parent_id(9)
• netdev_change_proto_down_reason_locked(9)
• dev_change_xdp_fd(9)
• dev_index_reserve(9)
• netdev_update_features(9)
• netif_stacked_transfer_operstate(9)
• register_netdevice(9)
• register_netdev(9)
• netdev_wait_allrefs_any(9)
• dev_get_stats(9)
• dev_fetch_sw_netstats(9)
• dev_get_tstats64(9)
• netdev_sw_irq_coalesce_default_on(9)
• alloc_netdev_mqs(9)
• free_netdev(9)
• alloc_netdev_dummy(9)
• synchronize_net(9)
• unregister_netdevice_queue(9)
• unregister_netdevice_many(9)
• unregister_netdev(9)
• netdev_increment_features(9)
• netdev_compute_master_upper_features(9)
• netdev_drivername(9)

mwah 💋 that's the whole page, bestie. Source/version: ./net/core; date: October 2026; page: netdev_change_features(9). periodt 💅