igc_release_hw_control(9)

💅 igc_release_hw_control — like, the let go function ✨

okay so this is a page from the Kernel API Manual, bestie — section 9, kernel-space vibes only, no userland shenanigans 💖

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🌸 NAME 🌸

igc_release_hw_control — release control of the h/w to f/w

(yes that's "hardware" and "firmware", we're being efficient with letters today 🎀)

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🦋 SYNOPSIS 🦋

void igc_release_hw_control (struct igc_adapter *adapter );

literally one function, zero return value, it just does the thing and dips 🫶

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✨ ARGUMENTS ✨

• adapter — address of board private structure. that's it. that's the whole input. she's a pointer to the board's private struct and she's the main character 👑

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💜 DESCRIPTION 💜

okay so igc_release_hw_control resets the CTRL_EXT:DRV_LOAD bit 🔥 that's the bit that says "hey, a driver is loaded in here."

for ASF and Pass Through versions of f/w, this means that the driver is no longer loaded. no cap — that's the actual semantic consequence, so like, don't call it if you still need the firmware to think you're around, iykyk 🙈

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🌈 SEE ALSO 🌈

the whole igc friend group, fr fr — take a look at the kernel file ./drivers/net/ethernet/intel/igc/igc_main.c and then:

• igc_power_up_link(9), igc_get_hw_control(9), igc_clean_tx_ring(9), igc_free_tx_resources(9), igc_free_all_tx_resources(9)
• igc_clean_all_tx_rings(9), igc_disable_all_tx_rings_hw(9), igc_setup_tx_resources(9), igc_setup_all_tx_resources(9)
• igc_clean_rx_ring(9), igc_clean_all_rx_rings(9), igc_free_rx_resources(9), igc_free_all_rx_resources(9)
• igc_setup_rx_resources(9), igc_setup_all_rx_resources(9), igc_configure_rx_ring(9), igc_configure_rx(9), igc_configure_tx_ring(9)
• igc_configure_tx(9), igc_setup_mrqc(9), igc_setup_rctl(9), igc_setup_tctl(9), igc_set_mac_filter_hw(9), igc_clear_mac_filter_hw(9)
• igc_set_mac(9), igc_write_mc_addr_list(9), igc_process_skb_fields(9), igc_add_rx_frag(9), igc_reuse_rx_page(9), igc_is_non_eop(9)
• igc_cleanup_headers(9), igc_alloc_rx_buffers(9), igc_clean_tx_irq(9), igc_add_mac_filter(9), igc_del_mac_filter(9)
• igc_add_vlan_prio_filter(9), igc_del_vlan_prio_filter(9), igc_add_etype_filter(9), igc_del_etype_filter(9), igc_get_nfc_rule(9)
• igc_del_nfc_rule(9), igc_add_nfc_rule(9), igc_enable_empty_addr_recv(9), igc_set_rx_mode(9), igc_configure(9), igc_write_ivar(9)
• igc_configure_msix(9), igc_irq_enable(9), igc_irq_disable(9), igc_reset_q_vector(9), igc_free_q_vector(9), igc_free_q_vectors(9)
• igc_update_itr(9), igc_set_interrupt_capability(9), igc_update_ring_itr(9), igc_cache_ring_register(9), igc_poll(9)
• igc_alloc_q_vector(9), igc_alloc_q_vectors(9), igc_init_interrupt_scheme(9), igc_sw_init(9), igc_up(9)
• igc_update_stats(9), igc_down(9), igc_change_mtu(9), igc_tx_timeout(9), igc_get_stats64(9), igc_msix_other(9), igc_request_msix(9)
• igc_clear_interrupt_scheme(9), igc_has_link(9), igc_watchdog(9), igc_intr_msi(9), igc_intr(9), igc_request_irq(9), __igc_open(9)
• __igc_close(9), igc_probe(9), igc_remove(9), igc_io_error_detected(9), igc_io_slot_reset(9), igc_io_resume(9), igc_reinit_queues(9)
• igc_get_hw_dev(9), igc_init_module(9), igc_exit_module(9)

like... the entire driver, honestly 🧚💫

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💀 tiny reminder bestie: this one drops the CTRL_EXT:DRV_LOAD bit — so for ASF and Pass Through f/w, the driver is no longer loaded. that's the whole point, don't come for me 😭

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and that's the page, mwah 💋 this cutie lives over in ./drivers/net/ethernet/intel/igc, dated October 2026, and yes the page is called igc_release_hw_control(9) — go forth and release that hardware control, icon 🎀⭐👑