iavf_set_channels(9)

✨ iavf_set_channels ✨

okay so this is iavf_set_channels(9) from the Kernel API Manual — yes that's the 9 section, kernel-functions-coded, we love that for us 💅 — and it's the little function that handles changing up your channel count. bestie, let's get into it 🫶

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🌸 NAME 🌸

iavf_set_channels — set the new channel count. that's it, that's the whole vibe. iconic brevity honestly.

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🎀 SYNOPSIS 🎀

int iavf_set_channels (struct net_device *netdev , struct
ethtool_channels *ch );

yes she takes two pointers and returns an int. main character energy fr fr 💖

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🦋 ARGUMENTS 🦋

• netdev — the network interface device structure. yep, the whole device, she's holding it 💀
• ch — the channel information structure. this is where the channel tea lives ✨

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🔥 DESCRIPTION 🔥

so what actually happens? the function negotiates a new number of channels with the PF (that's the physical function, iykyk) and then does a reset. and like — the reset isn't just for the drama, okay? during that reset we'll realloc queues and fix the RSS table. so she's doing real work. no cap. 👑

lowkey a glow-up arc: talk to the PF → reset → realloc queues → fix RSS → serve 💅

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🌈 RETURN 🌈

• 0 — success, we ate 🍓
• negative — failure 😭 it's giving not today

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⭐ SEE ALSO ⭐

the kernel file lives at ./drivers/net/ethernet/intel/iavf/iavf_ethtool.c, and honestly the whole friend group is here — go say hi 👋

• 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_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_get_rxfh_key_size(9)
• iavf_get_rxfh_indir_size(9)
• iavf_get_rxfh(9)
• iavf_set_rxfh(9)
• iavf_set_ethtool_ops(9)

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and that's the whole page bestie 🧚 from the iavf directory ./drivers/net/ethernet/intel/iavf, dated October 2026 — mwah, go touch some queues 💜💖✨