ixgbe_change_mtu(9)

💅 ixgbe_change_mtu(9) — Kernel API Manual, but make it make sense 🎀

okay bestie, welcome to the Kernel API Manual ✨ and honestly? this one is short and sweet. today's main character is ixgbe_change_mtu(9), and its whole personality is Change the Maximum Transfer Unit. that's it. that's the vibe. no cap. 🦋

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✨ NAME ✨

ixgbe_change_mtu — Change the Maximum Transfer Unit 💖

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✨ SYNOPSIS ✨

literally the whole signature, copy it exactly, don't @ me:

int ixgbe_change_mtu (struct net_device *netdev , int new_mtu );

(she's giving "spaces before the comma" and we respect her for it 🫶)

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🌸 ARGUMENTS 🌸

• netdev — the network interface device structure. the whole device, the icon, the main character 👑
• new_mtu — the new value for maximum frame size. so like, the new number, bestie 🔥

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💀 DESCRIPTION 💀

okay so here's the entire behaviour, hold onto your strawberry:

Returns 0 on success, negative on failure.

that's the whole story fr fr — success gets you a 0, and if things go sideways you get a negative number back. no long dramatic explanation, she's a woman of few words 💅✨

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🧚 SEE ALSO 🧚

first up, the kernel file where she actually lives — go read the source, iykyk:

Kernel file ./drivers/net/ethernet/intel/ixgbe/ixgbe_main.c

and now the extended friend group 😭 there are SO many of them, but every single one is here, bestie, not skipping a single mutual:

• ixgbe_pcie_from_parent(9), 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_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 a whole group chat right there. anyway, go say hi to a few of them 💜

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✨ signing off, bestie ✨ this little page came from source/version ./drivers/net/ethernet/intel/i... and it's dated October 2026, and it'll always answer to the name ixgbe_change_mtu(9) 🎀💖 slay, bye! 🌈🦋