igb_probe_vfs(9)

💖 igb_probe_vfs — the Kernel API Manual, bestie edition 🎀

okay so you're looking at igb_probe_vfs(9) from the igb crew — that's the Kernel API Manual section 9, which is literally the "kernel internals" shelf of the library. Come sit, I'll walk you through it 💅

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✨ NAME ✨

igb_probe_vfs — it initializes the vf data storage and adds VFs to pci config space, both, one function, iconic behaviour honestly 🫶

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🌸 SYNOPSIS 🌸

void igb_probe_vfs (struct igb_adapter *adapter );

no cap, that's the whole signature. void in, void out, one pointer. clean. minimal. she ate 💅

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🦋 ARGUMENTS 🦋

• adapter — the board private structure you're initializing, like the main character of this whole operation 👑

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🧚 DESCRIPTION 🧚

okay so here's what she does. igb_probe_vfs initializes the vf specific data storage first, and then she attempts to allocate the VFs. and the reason for that ordering? lowkey genius: it is much more expensive time wise to disable SR-IOV than it is to allocate and free the memory for the VFs. so like... you do the cheap thing first, obviously. the way that cost analysis just makes sense 😭✨

so the vibe check is: memory setup → then the pricey SR-IOV dance. periodt.

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🔥 SEE ALSO 🔥

the kernel file this lives in, bestie:

• ./drivers/net/ethernet/intel/igb/igb_main.c

and here is the entire friend group, no one gets left out 💜 (fr fr, all of these are real and I'm not skipping a single one):

• igb_get_i2c_data(9), igb_set_i2c_data(9), igb_set_i2c_clk(9), igb_get_i2c_clk(9), igb_get_hw_dev(9), igb_init_module(9), igb_exit_module(9), igb_cache_ring_register(9), igb_write_ivar(9), igb_configure_msix(9), igb_request_msix(9), igb_free_q_vector(9), igb_reset_q_vector(9), igb_free_q_vectors(9), igb_clear_interrupt_scheme(9), igb_set_interrupt_capability(9), igb_alloc_q_vector(9), igb_alloc_q_vectors(9), igb_init_interrupt_scheme(9), igb_request_irq(9), igb_irq_disable(9), igb_irq_enable(9), igb_release_hw_control(9), igb_get_hw_control(9), igb_config_tx_modes(9), igb_setup_tx_mode(9), igb_configure(9), igb_power_up_link(9), igb_power_down_link(9), igb_check_swap_media(9), igb_up(9), igb_set_i2c_bb(9), igb_set_fw_version(9), igb_init_mas(9), igb_init_i2c(9), igb_probe(9), igb_remove_i2c(9), igb_remove(9), igb_sw_init(9), __igb_open(9), __igb_close(9), igb_setup_tx_resources(9), igb_setup_all_tx_resources(9), igb_setup_tctl(9), igb_configure_tx_ring(9), igb_configure_tx(9), igb_setup_rx_resources(9), igb_setup_all_rx_resources(9), igb_setup_mrqc(9), igb_setup_rctl(9), igb_setup_srrctl(9), igb_configure_rx_ring(9), igb_configure_rx(9), igb_free_tx_resources(9), igb_free_all_tx_resources(9), igb_clean_tx_ring(9), igb_clean_all_tx_rings(9), igb_free_rx_resources(9), igb_free_all_rx_resources(9), igb_clean_rx_ring(9), igb_clean_all_rx_rings(9), igb_set_mac(9), igb_write_mc_addr_list(9), igb_set_rx_mode(9), igb_has_link(9), igb_check_lvmmc(9), igb_watchdog(9), igb_update_ring_itr(9), igb_update_itr(9), igb_tx_timeout(9), igb_get_stats64(9), igb_change_mtu(9), igb_update_stats(9), igb_set_uta(9), igb_intr_msi(9), igb_intr(9), igb_poll(9), igb_clean_tx_irq(9), igb_reuse_rx_page(9), igb_add_rx_frag(9), igb_is_non_eop(9), igb_cleanup_headers(9), igb_process_skb_fields(9), igb_alloc_rx_buffers(9), igb_mii_ioctl(9), igb_ioctl(9), igb_io_error_detected(9), igb_io_slot_reset(9), igb_io_resume(9), igb_rar_set_index(9), igb_read_i2c_byte(9), igb_write_i2c_byte(9)

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that's the whole thing bestie, you're caught up 💖

and for the sign-off: this beauty lives under ./drivers/net/ethernet/intel/igb, dated October 2026, and the footer of the page just repeats igb_probe_vfs(9) back at you — which is honestly such a main character move, refusing to be anything other than herself 🌈⭐ ngl, obsessed. iykyk 🫶