ixgbe_pcie_from_parent(9)

💅 ixgbe_pcie_from_parent — Kernel API Manual ✨

okay so this is a page from the Kernel API Manual, bestie, and it's all about ixgbe_pcie_from_parent(9) — the tiny little helper that decides where your PCIe tea gets spilled from 🫖✨

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🌸 NAME 🌸

ixgbe_pcie_from_parent — figure out whether the PCIe info should come from the parent 💖

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✨ SYNOPSIS ✨

bool ixgbe_pcie_from_parent (struct ixgbe_hw *hw );

like. that's it. that's the whole vibe check 🎀

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🦋 ARGUMENTS 🦋

• hw — the hw-specific details, i.e. all the little facts about this particular piece of hardware. she's the main character of this function ngl 👑

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💜 DESCRIPTION 💜

so this function is the one probe calls to decide whether a device's PCI-Express bandwidth details should be gathered from the parent bus instead of from the device itself. no cap, that's literally the whole job 💅

it's used to make sure that various locations all have the correct device ID checks — like, everybody's checking the same thing, and nobody's out here checking the wrong ID. consistency icon behavior fr fr ✨

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🔥 RETURN 🔥

• true if the information should be collected from the parent bus 🫶
• false otherwise 🙈

two outcomes, no in-between, periodt 💀

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🎀 SEE ALSO 🎀

the kernel file, bestie: ./drivers/net/ethernet/intel/ixgbe/ixgbe_main.c — that's where the lore lives 📖

and then. okay. sit down. the whole extended friend group 🫂 — every single one of these is invited to the group chat:

ixgbe_read_reg(9), ixgbe_set_ivar(9), ixgbe_get_vf_idx(9), ixgbe_tx_timeout_reset(9), ixgbe_tx_maxrate(9), ixgbe_update_tx_ring_stats(9), ixgbe_update_rx_ring_stats(9), ixgbe_pf_handle_tx_hang(9), ixgbe_vf_handle_tx_hang(9), ixgbe_check_illegal_queue(9), ixgbe_handle_mdd_event(9), ixgbe_clean_tx_irq(9), ixgbe_rx_is_fcoe(9), ixgbe_rx_checksum(9), ixgbe_alloc_rx_buffers(9), ixgbe_process_skb_fields(9), ixgbe_is_non_eop(9), ixgbe_pull_tail(9), ixgbe_dma_sync_frag(9), ixgbe_cleanup_headers(9), ixgbe_reuse_rx_page(9), ixgbe_add_rx_frag(9), ixgbe_clean_rx_irq(9), ixgbe_configure_msix(9), ixgbe_update_itr(9), ixgbe_write_eitr(9), ixgbe_check_overtemp_subtask(9), ixgbe_check_phy_fw_load(9), ixgbe_check_module_power(9), ixgbe_check_link_cfg_err(9), ixgbe_process_link_status_event(9), ixgbe_handle_link_status_event(9), ixgbe_schedule_fw_event(9), ixgbe_aci_event_cleanup(9), ixgbe_handle_fw_event(9), ixgbe_irq_enable(9), ixgbe_poll(9), ixgbe_request_msix_irqs(9), ixgbe_intr(9), ixgbe_request_irq(9), ixgbe_irq_disable(9), ixgbe_configure_msi_and_legacy(9), ixgbe_configure_tx_ring(9), ixgbe_configure_tx(9), ixgbe_rss_indir_tbl_entries(9), ixgbe_store_key(9), ixgbe_init_rss_key(9), ixgbe_store_reta(9), ixgbe_store_vfreta(9), ixgbe_configure_rscctl(9), ixgbe_configure_rx(9), ixgbe_vlan_strip_disable(9), ixgbe_vlan_strip_enable(9), ixgbe_write_mc_addr_list(9), ixgbe_set_rx_mode(9), ixgbe_configure_dcb(9), ixgbe_hpbthresh(9), ixgbe_lpbthresh(9), ixgbe_clean_rx_ring(9), ixgbe_enable_link_status_events(9), ixgbe_disable_link_status_events(9), ixgbe_sfp_link_config(9), ixgbe_non_sfp_link_config(9), ixgbe_check_media_subtask(9), ixgbe_clear_vf_stats_counters(9), ixgbe_clean_tx_ring(9), ixgbe_clean_all_rx_rings(9), ixgbe_clean_all_tx_rings(9), ixgbe_set_eee_capable(9), ixgbe_tx_timeout(9), ixgbe_sw_init(9), ixgbe_setup_tx_resources(9), ixgbe_setup_all_tx_resources(9), ixgbe_setup_rx_resources(9), ixgbe_setup_all_rx_resources(9), ixgbe_free_tx_resources(9), ixgbe_free_all_tx_resources(9), ixgbe_free_rx_resources(9), ixgbe_free_all_rx_resources(9), ixgbe_max_xdp_frame_size(9), ixgbe_change_mtu(9), ixgbe_open(9), ixgbe_close(9), ixgbe_update_stats(9), ixgbe_fdir_reinit_subtask(9), ixgbe_check_hang_subtask(9), ixgbe_watchdog_update_link(9), ixgbe_watchdog_link_is_up(9), ixgbe_watchdog_link_is_down(9), ixgbe_watchdog_flush_tx(9), ixgbe_watchdog_subtask(9), ixgbe_sfp_detection_subtask(9), ixgbe_sfp_link_config_subtask(9), ixgbe_service_timer(9), ixgbe_check_fw_error(9), ixgbe_service_task(9), ixgbe_set_mac(9), ixgbe_add_sanmac_netdev(9), ixgbe_del_sanmac_netdev(9), ixgbe_validate_rtr(9), ixgbe_set_prio_tc_map(9), ixgbe_setup_tc(9), ixgbe_configure_bridge_mode(9), ixgbe_irq_disable_single(9), ixgbe_txrx_ring_disable(9), ixgbe_txrx_ring_enable(9), ixgbe_enumerate_functions(9), ixgbe_wol_supported(9), ixgbe_set_fw_version_e610(9), ixgbe_set_fw_version(9), ixgbe_recovery_probe(9), ixgbe_probe(9), ixgbe_remove(9), ixgbe_io_error_detected(9), ixgbe_io_slot_reset(9), ixgbe_io_resume(9), ixgbe_init_module(9), ixgbe_exit_module(9)

like, that's the entire extended universe right there 😭 every one of them is a real page, i don't make the rules 🍓

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and that's the page, bestie!! 🧚💖 this whole thing lives at ./drivers/net/ethernet/intel/i... and it's dated October 2026, and the page name is ixgbe_pcie_from_parent(9) — mwah, slay, bye 👑✨💅