i40e_shutdown_lan_hmc(9)

💖 i40e_shutdown_lan_hmc — the kernel API manual, bestie edition 💖

okay so bestie, this is a page from the kernel API manual, and we're talking about i40e_shutdown_lan_hmc — the function that literally cleans up your HMC situation when it's time to go. Think of it as the "girl, pack your bags, we're leaving" moment for your HMC backing store. obsessed with a clean exit tbh ✨

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🌸 NAME 🌸

i40e_shutdown_lan_hmc — removes the HMC backing store and frees the allocated memory 💅

like, it's giving "tear it down, bestie" energy. no cap.

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🎀 SYNOPSIS 🎀

int i40e_shutdown_lan_hmc (struct i40e_hw *hw );

it returns an int, and yeah we're passing it one pointer. that's the whole vibe. 🦋

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🦋 ARGUMENTS 🦋

• hw — pointer to the hw structure. that's your hardware struct, the main character of this whole operation 👑

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✨ DESCRIPTION ✨

so here's the tea ☕: this function must be called by drivers as they are shutting down and being removed from the OS.

not "should", not "maybe if you feel like it" — must. this is the goodbye-cleanly step, and skipping it is definitely not the move. 😭

it removes the HMC backing store and frees the allocated memory, which is exactly what you want when your driver is packing up and heading out. 🧳🫶

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🔥 SEE ALSO 🔥

the homies, the squad, the whole group chat of related functions — and the kernel file they live in:

• Kernel file ./drivers/net/ethernet/intel/i40e/i40e_lan_hmc.c
• i40e_align_l2obj_base(9)
• i40e_calculate_l2fpm_size(9)
• i40e_init_lan_hmc(9)
• i40e_remove_pd_page(9)
• i40e_remove_sd_bp(9)
• i40e_create_lan_hmc_object(9)
• i40e_configure_lan_hmc(9)
• i40e_delete_lan_hmc_object(9)
• i40e_write_byte(9)
• i40e_write_word(9)
• i40e_write_dword(9)
• i40e_write_qword(9)
• i40e_clear_hmc_context(9)
• i40e_set_hmc_context(9)
• i40e_hmc_get_object_va(9)
• i40e_clear_lan_tx_queue_context(9)
• i40e_set_lan_tx_queue_context(9)
• i40e_clear_lan_rx_queue_context(9)
• i40e_set_lan_rx_queue_context(9)

like, that's a whole friend group. go say hi to all of them 🌈

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and that's a wrap, babe 💖 this page lives in ./drivers/net/ethernet/intel/i40e and is dated October 2026 — so yeah, mark your calendar, the i40e_shutdown_lan_hmc(9) era is upon us. slay, clean up your memory, and stay hydrated 🍓✨👑