napi_disable(9)

🦋 napi_disable 🦋

okay so real quick — this page is from the Kernel API Manual, and bestie, it's a short one but it's lowkey important, so let's get into it 💅

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✨ NAME ✨

napi_disable — literally just: prevent NAPI from scheduling. that's the whole vibe check 🎀

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🌸 SYNOPSIS 🌸

void napi_disable (struct napi_struct *n );

like yes, that's it. no cap, one argument, returns nothing. main character energy but make it void 💖

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🧚 ARGUMENTS 🧚

• n — the NAPI context 🫶 that's the thing you're about to put on pause, bestie.

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🔥 DESCRIPTION 🔥

So what does it actually do? It stops NAPI from being scheduled on this context ✨ periodt. That's the headline.

And then — the way that it's not just a "flip a bit and dip" situation — it waits till any outstanding processing completes 😭 like it's not gonna leave the party until every last thing finishes. respectful honestly.

Also: it takes netdev_lock for the associated net_device 👑 so yeah, it's grabbing a lock on the way in, iykyk. plan accordingly.

ngl, "waits till any outstanding processing completes" + "takes netdev_lock" is the part that matters most here — this call can block on you, so don't be caught off guard 🙈

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⭐ SEE ALSO ⭐

alright bestie, buckle up, this list is iconic and also extremely long 🎀💀 and yes we're keeping every single one, because that's what slay means:

• 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_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)
• netdev_change_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)

oh and the source file for all of this is Kernel file ./net/core/dev.c 🦋 go read it if you're feeling brave, i believe in you 🫶

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and that's the whole page bestie 💖 mwah 💅

so like, credit where it's due — this one came out of ./net/core, dated October 2026, and it's still filed under napi_disable(9) in the Kernel API Manual 🌸 go forth and disable NAPI responsibly ⭐🎀