netif_oper_up(9)

💖 netif_oper_up(9) — Kernel API Manual 💖

hey bestie, welcome to the Kernel API Manual entry for netif_oper_up(9). it’s giving “tiny but iconic kernel helper” and we’re gonna read it together, okay? 🫶

✨ NAME ✨

netif_oper_up — test if device is operational. that’s the mission, no cap. 💅

🦋 SYNOPSIS 🦋

bool netif_oper_up (const struct net_device *dev );

🌸 ARGUMENTS 🌸

• dev — network device. that’s the one and only argument, bestie. 🎀

💜 DESCRIPTION 💜

Check if carrier is operational. literally the whole vibe check: is the carrier operational or not? ✅

👑 SEE ALSO 👑

okay so the whole friend group is linked here — kernel file ./include/linux/netdevice.h and struct gro_node(9) are in the mix, along with:

• 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_on(9), netif_testing_off(9), netif_testing(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 💜 — signing off from the ./include/linux source tree, October 2026 edition. mwah! 🫶