i40e_handle_mdd_event(9)
π i40e_handle_mdd_event(9) π
okay so welcome to the Kernel API Manual, bestie π this is the page for i40e_handle_mdd_event, and it's honestly a short one β but we're gonna give it the full main-character treatment anyway because every manpage deserves love. β¨
π NAME π
i40e_handle_mdd_event β that's the name, that's the whole name π the original page leaves the description part blank, and no cap, we're not gonna invent one for you. sometimes the vibe is just "here's the function, go look at the source."
π¦ SYNOPSIS π¦
void i40e_handle_mdd_event (struct i40e_pf *pf );
that's it. one line. returns nothing (void), takes one thing. minimalism slay π
πΈ ARGUMENTS πΈ
pfβ pointer to the PF structure. that's the whole description, iykyk π«Ά
β¨ DESCRIPTION β¨
so here's the tea: this one gets called from the MDD irq handler, and its job in life is to identify possibly malicious vfs ππ₯
the manpage does not spell out what MDD stands for, and I'm not gonna make something up to sound smart, so we're leaving that exactly where it is. what we do know: irq handler calls it, it goes looking for possibly-malicious VFs. lowkey detective energy π΅οΈββοΈπ
π SEE ALSO π
okay this is the part where the page goes absolutely feral β the SEE ALSO list is huge. like, "she ate and left no crumbs" huge. buckle up, bestie, we're going through all of it, in order, no skips, no shortcuts π
first up, the source file itself:
- Kernel file
./drivers/net/ethernet/intel/i40e/i40e_main.c
then the whole i40e extended fam starts rolling in:
i40e_hw_to_dev(9)i40e_allocate_dma_mem(9)i40e_free_dma_mem(9)i40e_allocate_virt_mem(9)i40e_free_virt_mem(9)i40e_get_lump(9)i40e_put_lump(9)i40e_find_vsi_from_id(9)i40e_service_event_schedule(9)i40e_tx_timeout(9)i40e_get_vsi_stats_struct(9)i40e_get_netdev_stats_struct_tx(9)i40e_get_netdev_stats_struct(9)i40e_vsi_reset_stats(9)i40e_pf_reset_stats(9)i40e_compute_pci_to_hw_id(9)i40e_stat_update64(9)i40e_stat_update48(9)i40e_stat_update32(9)i40e_stat_update_and_clear32(9)i40e_stats_update_rx_discards(9)i40e_update_eth_stats(9)i40e_update_veb_stats(9)i40e_update_vsi_stats(9)i40e_update_pf_stats(9)i40e_update_stats(9)
stats arc complete, we love to see it πβ¨ now the filter girlies:
i40e_count_all_filters(9)i40e_count_active_filters(9)i40e_find_filter(9)i40e_find_mac(9)i40e_is_vsi_in_vlan(9)i40e_correct_mac_vlan_filters(9)i40e_get_vf_new_vlan(9)i40e_correct_vf_mac_vlan_filters(9)i40e_rm_default_mac_filter(9)i40e_add_filter(9)__i40e_del_filter(9)i40e_add_mac_filter(9)i40e_del_mac_filter(9)i40e_set_mac(9)i40e_config_rss_aq(9)i40e_vsi_config_rss(9)i40e_vsi_setup_queue_map_mqprio(9)i40e_vsi_setup_queue_map(9)i40e_addr_sync(9)i40e_addr_unsync(9)i40e_set_rx_mode(9)i40e_undo_del_filter_entries(9)i40e_undo_add_filter_entries(9)i40e_next_filter(9)i40e_update_filter_state(9)i40e_aqc_del_filters(9)i40e_aqc_add_filters(9)i40e_aqc_broadcast_filter(9)i40e_set_promiscuous(9)i40e_sync_vsi_filters(9)i40e_sync_filters_subtask(9)
yes, __i40e_del_filter(9) has two underscores, don't @ me, that's literally how it's written π«Ά and yes we kept it. moving on to frames and VLANs:
i40e_calculate_vsi_rx_buf_len(9)i40e_max_vsi_frame_size(9)i40e_change_mtu(9)i40e_vlan_stripping_enable(9)i40e_vlan_stripping_disable(9)i40e_add_vlan_all_mac(9)i40e_vsi_add_vlan(9)i40e_rm_vlan_all_mac(9)i40e_vsi_kill_vlan(9)i40e_vlan_rx_add_vid(9)i40e_vlan_rx_add_vid_up(9)i40e_vlan_rx_kill_vid(9)i40e_restore_vlan(9)i40e_vsi_add_pvid(9)i40e_vsi_remove_pvid(9)
rings and queues era π:
i40e_vsi_setup_tx_resources(9)i40e_vsi_free_tx_resources(9)i40e_vsi_setup_rx_resources(9)i40e_vsi_free_rx_resources(9)i40e_config_xps_tx_ring(9)i40e_xsk_pool(9)i40e_configure_tx_ring(9)i40e_rx_offset(9)i40e_configure_rx_ring(9)i40e_vsi_configure_tx(9)i40e_vsi_configure_rx(9)i40e_vsi_config_dcb_rings(9)i40e_set_vsi_rx_mode(9)i40e_reset_fdir_filter_cnt(9)i40e_fdir_filter_restore(9)i40e_vsi_configure(9)i40e_vsi_configure_msix(9)i40e_enable_misc_int_causes(9)i40e_configure_msi_and_legacy(9)
interrupt section, aka the "please stop yelling" chapter β‘:
i40e_irq_dynamic_disable_icr0(9)i40e_irq_dynamic_enable_icr0(9)i40e_msix_clean_rings(9)i40e_irq_affinity_notify(9)i40e_irq_affinity_release(9)i40e_vsi_request_irq_msix(9)i40e_vsi_disable_irq(9)i40e_vsi_enable_irq(9)i40e_free_misc_vector(9)i40e_intr(9)i40e_clean_fdir_tx_irq(9)i40e_fdir_clean_ring(9)i40e_map_vector_to_qp(9)i40e_vsi_map_rings_to_vectors(9)i40e_vsi_request_irq(9)i40e_netpoll(9)i40e_pf_txq_wait(9)i40e_control_tx_q(9)i40e_control_wait_tx_q(9)i40e_vsi_enable_tx(9)i40e_pf_rxq_wait(9)i40e_control_rx_q(9)i40e_control_wait_rx_q(9)i40e_vsi_enable_rx(9)i40e_vsi_start_rings(9)i40e_vsi_stop_rings(9)i40e_vsi_stop_rings_no_wait(9)i40e_vsi_free_irq(9)i40e_free_q_vector(9)i40e_vsi_free_q_vectors(9)i40e_reset_interrupt_capability(9)i40e_clear_interrupt_scheme(9)i40e_napi_enable_all(9)i40e_napi_disable_all(9)i40e_vsi_close(9)i40e_quiesce_vsi(9)i40e_unquiesce_vsi(9)i40e_pf_quiesce_all_vsi(9)i40e_pf_unquiesce_all_vsi(9)i40e_vsi_wait_queues_disabled(9)i40e_pf_wait_queues_disabled(9)
DCB / traffic class girls, get in formation π:
i40e_get_iscsi_tc_map(9)i40e_dcb_get_num_tc(9)i40e_dcb_get_enabled_tc(9)i40e_mqprio_get_enabled_tc(9)i40e_pf_get_num_tc(9)i40e_pf_get_tc_map(9)i40e_vsi_get_bw_info(9)i40e_vsi_configure_bw_alloc(9)i40e_vsi_config_netdev_tc(9)i40e_vsi_update_queue_map(9)i40e_update_adq_vsi_queues(9)i40e_vsi_config_tc(9)i40e_vsi_reconfig_tc(9)i40e_get_link_speed(9)i40e_bw_bytes_to_mbits(9)i40e_set_bw_limit(9)i40e_remove_queue_channels(9)i40e_get_max_queues_for_channel(9)i40e_validate_num_queues(9)i40e_vsi_reconfig_rss(9)i40e_channel_setup_queue_map(9)i40e_add_channel(9)i40e_channel_config_tx_ring(9)i40e_setup_hw_channel(9)i40e_setup_channel(9)i40e_validate_and_set_switch_mode(9)i40e_create_queue_channel(9)i40e_configure_queue_channels(9)i40e_veb_config_tc(9)i40e_dcb_reconfigure(9)i40e_resume_port_tx(9)i40e_suspend_port_tx(9)i40e_hw_set_dcb_config(9)i40e_hw_dcb_config(9)i40e_dcb_sw_default_config(9)i40e_init_pf_dcb(9)
link up / link down saga π¦:
i40e_print_link_message(9)i40e_up_complete(9)i40e_vsi_reinit_locked(9)i40e_force_link_state(9)i40e_up(9)i40e_down(9)i40e_validate_mqprio_qopt(9)i40e_vsi_set_default_tc_config(9)
macvlan + tc flower + cloud filter zone, this is where it gets fancy π :
i40e_del_macvlan_filter(9)i40e_add_macvlan_filter(9)i40e_reset_ch_rings(9)i40e_free_macvlan_channels(9)i40e_fwd_ring_up(9)i40e_setup_macvlans(9)i40e_fwd_add(9)i40e_del_all_macvlans(9)i40e_fwd_del(9)i40e_setup_tc(9)i40e_set_cld_element(9)i40e_add_del_cloud_filter(9)i40e_add_del_cloud_filter_big_buf(9)i40e_parse_cls_flower(9)i40e_handle_tclass(9)i40e_configure_clsflower(9)i40e_find_cloud_filter(9)i40e_delete_clsflower(9)i40e_setup_tc_cls_flower(9)i40e_open(9)i40e_netif_set_realnum_tx_rx_queues(9)i40e_vsi_open(9)i40e_fdir_filter_exit(9)i40e_cloud_filter_exit(9)i40e_close(9)
resets, subtasks and the whole watchdog crew π₯:
i40e_do_reset(9)i40e_dcb_need_reconfig(9)i40e_handle_lldp_event(9)i40e_do_reset_safe(9)i40e_handle_lan_overflow_event(9)i40e_get_current_fd_count(9)i40e_get_global_fd_count(9)i40e_reenable_fdir_sb(9)i40e_reenable_fdir_atr(9)i40e_delete_invalid_filter(9)i40e_fdir_check_and_reenable(9)i40e_fdir_flush_and_replay(9)i40e_get_current_atr_cnt(9)i40e_fdir_reinit_subtask(9)i40e_vsi_link_event(9)i40e_veb_link_event(9)i40e_link_event(9)i40e_watchdog_subtask(9)i40e_reset_subtask(9)i40e_handle_link_event(9)i40e_clean_adminq_subtask(9)i40e_verify_eeprom(9)i40e_enable_pf_switch_lb(9)i40e_disable_pf_switch_lb(9)i40e_config_bridge_mode(9)i40e_reconstitute_veb(9)i40e_get_capabilities(9)i40e_fdir_sb_setup(9)i40e_fdir_teardown(9)i40e_rebuild_cloud_filters(9)i40e_rebuild_channels(9)i40e_clean_xps_state(9)i40e_prep_for_reset(9)i40e_send_version(9)i40e_get_oem_version(9)i40e_reset(9)i40e_rebuild(9)i40e_reset_and_rebuild(9)i40e_handle_reset_warning(9)
and yes β the MDD siblings are literally right there π:
service task corner + memory allocation era π:
i40e_service_task(9)i40e_service_timer(9)i40e_set_num_rings_in_vsi(9)i40e_vsi_alloc_arrays(9)i40e_vsi_mem_alloc(9)i40e_vsi_free_arrays(9)i40e_clear_rss_config_user(9)i40e_vsi_clear(9)i40e_vsi_clear_rings(9)i40e_alloc_rings(9)i40e_reserve_msix_vectors(9)i40e_init_msix(9)i40e_vsi_alloc_q_vector(9)i40e_vsi_alloc_q_vectors(9)i40e_init_interrupt_scheme(9)i40e_restore_interrupt_scheme(9)i40e_setup_misc_vector_for_recovery_mode(9)i40e_setup_misc_vector(9)
RSS girlies πΈ:
i40e_get_rss_aq(9)i40e_config_rss_reg(9)i40e_get_rss_reg(9)i40e_config_rss(9)i40e_get_rss(9)i40e_fill_rss_lut(9)i40e_pf_config_rss(9)i40e_reconfig_rss_queues(9)i40e_get_partition_bw_setting(9)i40e_set_partition_bw_setting(9)i40e_is_total_port_shutdown_enabled(9)i40e_sw_init(9)i40e_set_ntuple(9)i40e_clear_rss_lut(9)i40e_set_loopback(9)i40e_set_features(9)i40e_ndo_fdb_add(9)i40e_ndo_bridge_setlink(9)i40e_ndo_bridge_getlink(9)i40e_features_check(9)i40e_xdp_setup(9)i40e_enter_busy_conf(9)i40e_exit_busy_conf(9)
queue pairs π:
i40e_queue_pair_reset_stats(9)i40e_queue_pair_clean_rings(9)i40e_queue_pair_toggle_napi(9)i40e_queue_pair_toggle_rings(9)i40e_queue_pair_enable_irq(9)i40e_queue_pair_disable_irq(9)i40e_queue_pair_disable(9)i40e_queue_pair_enable(9)i40e_xdp(9)
netdev and VSI setup arc π:
i40e_config_netdev(9)i40e_vsi_delete(9)i40e_is_vsi_uplink_mode_veb(9)i40e_add_vsi(9)i40e_vsi_release(9)i40e_vsi_setup_vectors(9)i40e_vsi_reinit_setup(9)i40e_vsi_setup(9)i40e_veb_get_bw_info(9)i40e_veb_mem_alloc(9)i40e_switch_branch_release(9)i40e_veb_clear(9)i40e_veb_release(9)i40e_add_veb(9)i40e_veb_setup(9)i40e_setup_pf_switch_element(9)i40e_fetch_switch_configuration(9)i40e_setup_pf_switch(9)i40e_determine_queue_usage(9)i40e_setup_pf_filter_control(9)i40e_get_platform_mac_addr(9)i40e_set_fec_in_flags(9)i40e_check_recovery_mode(9)i40e_pf_loop_reset(9)i40e_check_fw_empr(9)i40e_handle_resets(9)i40e_init_recovery_mode(9)i40e_set_subsystem_device_id(9)
probe / remove / power management era, the final boss π:
i40e_probe(9)i40e_remove(9)i40e_enable_mc_magic_wake(9)i40e_io_suspend(9)i40e_io_resume(9)i40e_pci_error_detected(9)i40e_pci_error_slot_reset(9)i40e_pci_error_reset_prepare(9)i40e_pci_error_reset_done(9)i40e_pci_error_resume(9)i40e_shutdown(9)i40e_suspend(9)i40e_resume(9)i40e_init_module(9)i40e_exit_module(9)
okay that's genuinely the whole list, we did it, no crumbs left π«Άβ¨
π§ sign-off π§
so this little page comes to you from the source/version tag ./drivers/net/ethernet/intel/i40e, dated October 2026, and the page itself is i40e_handle_mdd_event(9) β that's the whole header, footer and vibe, bestie. now go be iconic in the kernel ππβ
π¦ where this page comes from
- nixpkgs unstable: linux-manual 7.3.1
- π girlified by deepseek-ai/DeepSeek-V4.1-Flash-1017 on : a language model's rewrite of the original, under its terms