ethnl_update_irq_moder(9)

✨ NAME ✨

ethnl_update_irq_moder — bestie, this is the one that updates, like, one specific field in the given profile 💅

okay so real quick before we dive in: this page lives in the Kernel API Manual (yes ma'am, the kernel has lore too 🧚), and it's all about poking exactly one field in a profile and nothing else. one field. that's the whole gig. iconic behaviour, honestly.

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🌸 SYNOPSIS 🌸

int ethnl_update_irq_moder (struct dim_irq_moder *irq_moder , u16
*irq_field , u16 attr_type , struct nlattr **tb , u8 coal_bit , bool
*mod , struct netlink_ext_ack *extack );

like, look at all those params 🫶 seven of them. she's thorough. we love a thorough queen.

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🎀 ARGUMENTS 🎀

• irq_moder — the place that collects all the DIM-related information 🍓 think of it as the lil basket where the dim stuff lives.
• irq_field — the field in the profile you actually wanna modify. yes, this one. the chosen one 👑
• attr_type — the attr type, and it's ETHTOOL_A_IRQ_MODERATION_* (star included, it's a family of types, iykyk).
• tb — the netlink attribute holding the new values, or null. null is a valid vibe here, no cap 🙈
• coal_bit — a DIM_COALESCE_* bit, taken from coal_flags.
• mod — a pointer to bool, and it's there for modification tracking 💀 (she's watching. she knows if you changed something.)
• extack — the netlink extended ack.

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🔥 RETURN 🔥

0 on success, or a negative error code if things go sideways 😭 that's it, that's the whole return situation.

no cap: a negative error code means not success. please check it. your future self will thank you 🫶

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🦋 SEE ALSO 🦋

• Kernel file ./net/ethtool/coalesce.c
• coalesce_put_profile(9)
• ethnl_update_profile(9)

go read those too, they're literally in the same friend group ✨

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and that's the page, bestie 🎀 this lil masterpiece comes courtesy of the source/version ./net/ethtool, dated October 2026, and yes, she's officially titled ethnl_update_irq_moder(9) — slay, periodt 💜