netif_testing_on(9)

Okay bestie, welcome to the Kernel API Manual page for netif_testing_on(9) ✨ This is the tiny helper that marks a network device as under test, and honestly? It’s giving “small function, very clear job” energy 💅

🎀 NAME 🎀

netif_testing_on — mark device as under test 💖

✨ SYNOPSIS ✨

void netif_testing_on (struct net_device *dev );

🌸 ARGUMENTS 🌸

• dev — the network device in question, bestie. That’s the argument list; no sneaky extras 🫶

🦋 DESCRIPTION 🦋

Okay so here’s the tea ☕: netif_testing_on marks the device as under test (as per RFC2863). No cap.

The testing state means that some test(s) must be performed on the interface, fr fr. After completion of the test, the interface state will change to up, dormant, or down, as appropriate. Periodt 💅

👑 SEE ALSO 👑

The page also points at the kernel file ./include/linux/netdevice.h, plus this iconic friend group of references:

• struct gro_node(9)
• napi_is_scheduled(9)
• napi_schedule(9)
• napi_schedule_irqoff(9)
• napi_complete_done(9)
• napi_synchronize(9)
• napi_if_scheduled_mark_missed(9)
• enum netdev_priv_flags(9)
• struct net_device(9)
• netdev_priv(9)
• netdev_from_priv(9)
• netif_napi_add(9)
• netif_napi_add_config(9)
• netif_napi_add_tx(9)
• __netif_napi_del(9)
• netif_napi_del(9)
• netif_start_queue(9)
• netif_wake_queue(9)
• netif_stop_queue(9)
• netif_queue_stopped(9)
• netdev_queue_set_dql_min_limit(9)
• netdev_txq_bql_enqueue_prefetchw(9)
• netdev_txq_bql_complete_prefetchw(9)
• netdev_tx_sent_queue(9)
• netdev_sent_queue(9)
• netdev_tx_completed_queue(9)
• netdev_completed_queue(9)
• netdev_tx_reset_subqueue(9)
• netdev_reset_queue(9)
• netdev_cap_txqueue(9)
• netif_running(9)
• netif_start_subqueue(9)
• netif_stop_subqueue(9)
• __netif_subqueue_stopped(9)
• netif_subqueue_stopped(9)
• netif_wake_subqueue(9)
• netif_attr_test_mask(9)
• netif_attr_test_online(9)
• netif_attrmask_next(9)
• netif_attrmask_next_and(9)
• netif_is_multiqueue(9)
• dev_hold(9)
• dev_put(9)
• linkwatch_sync_dev(9)
• netif_carrier_ok(9)
• netif_dormant_on(9)
• netif_dormant_off(9)
• netif_dormant(9)
• netif_testing_off(9)
• netif_testing(9)
• netif_oper_up(9)
• netif_device_present(9)
• netif_tx_lock(9)
• __dev_uc_sync(9)
• __dev_uc_unsync(9)
• __dev_mc_sync(9)
• __dev_mc_unsync(9)

That’s the whole page, bestie 🫶 This one comes from ./include/linux, dated October 2026, and it’s the netif_testing_on(9) manual page. Bye 💖✨