atl2_change_mtu(9)

💅 atl2_change_mtu — like, the MTU glow-up function (kernel API manual, bestie)

okay so this is atl2_change_mtu(9) from the Kernel API Manual and honestly? it's a little one, but she's iconic. it's giving "small function, big responsibilities" ✨

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🌸 SYNOPSIS 🌸

int atl2_change_mtu (struct net_device *netdev , int new_mtu );

that's the whole vibe. returns an int, takes two args, slays. 🎀

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🫶 ARGUMENTS 🫶

• netdev — the network interface device structure, aka the whole entire device, bestie. this is the main character of the operation 💖
• new_mtu — the new value for the maximum frame size. yes, that's what we're changing. that's literally the assignment 🌟

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🔥 DESCRIPTION 🔥

so what does she actually do? returns 0 on success, and a negative value on failure. that's it. that's the whole description. no cap. 🧚

lowkey obsessed with how the docs just say that and dip, but fr fr that's all there is — success gets you a 0, failure gets you something negative, and that's the tea ☕

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🦋 SEE ALSO 🦋

the whole atl2 friend group, in kernel file ./drivers/net/ethernet/atheros/atlx/atl2.c:

• atl2_sw_init(9)
• atl2_set_multi(9)
• atl2_configure(9)
• atl2_setup_ring_resources(9)
• atl2_irq_enable(9)
• atl2_irq_disable(9)
• atl2_intr(9)
• atl2_free_ring_resources(9)
• atl2_open(9)
• atl2_close(9)
• atl2_set_mac(9)
• atl2_tx_timeout(9)
• atl2_watchdog(9)
• atl2_phy_config(9)
• atl2_link_chg_task(9)
• atl2_probe(9)
• atl2_remove(9)
• atl2_check_options(9)

like, go read her sisters too, iykyk 💅

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🎀 the cute lil sign-off 🎀

this page came from ./drivers/net/ethernet/atheros... and it's dated October 2026 — so bestie, screenshot it, cite it, and remember: atl2_change_mtu(9), periodt. 👑💜