__iavf_get_coalesce(9)

💅 __iavf_get_coalesce(9) — like, the kernel API manual, bestie 💅

okay so picture this: you're deep in the iavf driver, everything's fine, and then someone's like "hey what are the coalesce settings for this queue" — and THAT, bestie, is where __iavf_get_coalesce swoops in. it's a function in the kernel API manual, not a command you type in your shell, so don't go mashing it into a terminal, okay? 🫶

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✨ SYNOPSIS ✨

int __iavf_get_coalesce (struct net_device *netdev , struct
       ethtool_coalesce *ec , int queue );

that's the whole signature, no cap. three args, one int coming back at you. 🌸

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🎀 ARGUMENTS 🎀

• netdev — the netdev to check. like, this is the device we're snooping on. 👀
• ec — the ethtool coalesce data structure. this is where the goods get dropped off. it's giving "output parameter main character energy". ✨
• queue — which queue to pick. you want queue 7's vibe? say 7. simple as that. 💅

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🦋 DESCRIPTION 🦋

so what does it actually do? it gets the per-queue settings for coalescence. and here's the tea: specifically, the Rx and Tx usecs are per queue. that's the whole point of the thing — per-queue granularity, not some one-size-fits-all global number. 👑

and because kernel devs are thoughtful like that: if queue is <0 then we default to queue 0 as the representative value. so negative queue = "just gimme the vibe of queue 0 and we'll call it a day." easy. no error, no drama, just a fallback. 🧚

ngl this one's a getter — it reads stuff out. it doesn't set anything, so you're not gonna accidentally break your coalescing by calling it. still, respect the API, bestie. 🙈

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⭐ SEE ALSO ⭐

everything's chillin' in the kernel file ./drivers/net/ethernet/intel/iavf/iavf_ethtool.c, and these are all the siblings in the family group chat:

• struct iavf_stats(9)
• iavf_add_one_ethtool_stat(9)
• __iavf_add_ethtool_stats(9)
• iavf_add_ethtool_stats(9)
• iavf_add_queue_stats(9)
• __iavf_add_stat_strings(9)
• iavf_add_stat_strings(9)
• iavf_get_link_ksettings(9)
• iavf_get_sset_count(9)
• iavf_get_ethtool_stats(9)
• iavf_get_stat_strings(9)
• iavf_get_strings(9)
• iavf_get_msglevel(9)
• iavf_set_msglevel(9)
• iavf_get_drvinfo(9)
• iavf_get_ringparam(9)
• iavf_set_ringparam(9)
• iavf_get_coalesce(9)
• iavf_get_per_queue_coalesce(9)
• iavf_set_itr_per_queue(9)
• __iavf_set_coalesce(9)
• iavf_set_coalesce(9)
• iavf_set_per_queue_coalesce(9)
• iavf_fltr_to_ethtool_flow(9)
• iavf_ethtool_flow_to_fltr(9)
• iavf_is_mask_valid(9)
• iavf_parse_rx_flow_user_data(9)
• iavf_fill_rx_flow_ext_data(9)
• iavf_get_ethtool_fdir_entry(9)
• iavf_get_fdir_fltr_ids(9)
• iavf_add_fdir_fltr_info(9)
• iavf_add_fdir_ethtool(9)
• iavf_del_fdir_ethtool(9)
• iavf_set_rxnfc(9)
• iavf_get_rx_ring_count(9)
• iavf_get_rxnfc(9)
• iavf_get_channels(9)
• iavf_set_channels(9)
• iavf_get_rxfh_key_size(9)
• iavf_get_rxfh_indir_size(9)
• iavf_get_rxfh(9)
• iavf_set_rxfh(9)
• iavf_set_ethtool_ops(9)

like, the whole iavf_ethtool.c squad is here. read them all. or don't. i'm a manpage, not a cop. 😭

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and that's a wrap, bestie!! 🎀✨ this lil' page lives in ./drivers/net/ethernet/intel/iavf, dated October 2026 — mwah, love that for us. go forth and coalesce responsibly 💖🦋👑