netdev_sent_queue(9)

💅 netdev_sent_queue — Kernel API Manual ✨

okay so bestie, welcome to the glow-up of netdev_sent_queue(9) — it lives in the Kernel API Manual and it's basically the "hey queen, I handed off some bytes" text message your network driver sends to the kernel. let's get into it 🫶

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🌸 NAME 🌸

netdev_sent_queue — report the number of bytes queued to hardware

like, literally just tattling on how much stuff you pushed to the hardware. no cap. 💖

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🦋 SYNOPSIS 🦋

void netdev_sent_queue (struct net_device *dev , unsigned int bytes );

(yes, the spacing is exactly like that, she's quirky, we respect it 💅)

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🎀 ARGUMENTS 🎀

• dev — the network device. your main character struct. 👑
• bytes — number of bytes queued to the hardware device queue 🍓

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⭐ DESCRIPTION ⭐

so what you're doing here is reporting the number of bytes queued for sending/completion to the network device hardware queue#0. yep, queue#0 specifically, she's that girl.

bytes should be a good approximation — and it should exactly match the netdev_completed_queue bytes. not "close enough", not "vibes-based", exactly match. the way that matters 😭

this is typically called once per packet, from ndo_start_xmit. one packet, one call, iconic behavior periodt. 🔥

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🌈 SEE ALSO 🌈

Kernel file ./include/linux/netdevice.h — and the whole friend group below, because nobody does networking alone 🧚

• 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_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_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)

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and that's the whole page, bestie — go forth and report your bytes accurately, the kernel is counting on you 💜✨

🌸 courtesy of ./include/linux, dated October 2026 — mwah, ty for reading, ily, bye! 💖🎀🦋